MagickCore 7.1.2-19
Convert, Edit, Or Compose Bitmap Images
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draw.c
1/*
2%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3% %
4% %
5% %
6% DDDD RRRR AAA W W %
7% D D R R A A W W %
8% D D RRRR AAAAA W W W %
9% D D R RN A A WW WW %
10% DDDD R R A A W W %
11% %
12% %
13% MagickCore Image Drawing Methods %
14% %
15% %
16% Software Design %
17% Cristy %
18% July 1998 %
19% %
20% %
21% Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization %
22% dedicated to making software imaging solutions freely available. %
23% %
24% You may not use this file except in compliance with the License. You may %
25% obtain a copy of the License at %
26% %
27% https://imagemagick.org/license/ %
28% %
29% Unless required by applicable law or agreed to in writing, software %
30% distributed under the License is distributed on an "AS IS" BASIS, %
31% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
32% See the License for the specific language governing permissions and %
33% limitations under the License. %
34% %
35%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36%
37% Bill Radcliffe of Corbis (www.corbis.com) contributed the polygon
38% rendering code based on Paul Heckbert's "Concave Polygon Scan Conversion",
39% Graphics Gems, 1990. Leonard Rosenthal and David Harr of Appligent
40% (www.appligent.com) contributed the dash pattern, linecap stroking
41% algorithm, and minor rendering improvements.
42%
43*/
44␌
45/*
46 Include declarations.
47*/
48#include "MagickCore/studio.h"
49#include "MagickCore/annotate.h"
50#include "MagickCore/artifact.h"
51#include "MagickCore/blob.h"
52#include "MagickCore/cache.h"
53#include "MagickCore/cache-private.h"
54#include "MagickCore/cache-view.h"
55#include "MagickCore/channel.h"
56#include "MagickCore/color.h"
57#include "MagickCore/colorspace-private.h"
58#include "MagickCore/composite.h"
59#include "MagickCore/composite-private.h"
60#include "MagickCore/constitute.h"
61#include "MagickCore/draw.h"
62#include "MagickCore/draw-private.h"
63#include "MagickCore/enhance.h"
64#include "MagickCore/exception.h"
65#include "MagickCore/exception-private.h"
66#include "MagickCore/gem.h"
67#include "MagickCore/geometry.h"
68#include "MagickCore/image-private.h"
69#include "MagickCore/list.h"
70#include "MagickCore/log.h"
71#include "MagickCore/magick.h"
72#include "MagickCore/memory-private.h"
73#include "MagickCore/monitor.h"
74#include "MagickCore/monitor-private.h"
75#include "MagickCore/option.h"
76#include "MagickCore/paint.h"
77#include "MagickCore/pixel-accessor.h"
78#include "MagickCore/property.h"
79#include "MagickCore/resample.h"
80#include "MagickCore/resample-private.h"
81#include "MagickCore/resource_.h"
82#include "MagickCore/splay-tree.h"
83#include "MagickCore/string_.h"
84#include "MagickCore/string-private.h"
85#include "MagickCore/thread-private.h"
86#include "MagickCore/token.h"
87#include "MagickCore/transform-private.h"
88#include "MagickCore/utility.h"
89␌
90/*
91 Define declarations.
92*/
93#define AntialiasThreshold (1.0/3.0)
94#define BezierQuantum 200
95#define PrimitiveExtentPad 4296.0
96#define MaxBezierCoordinates 67108864
97#define ThrowPointExpectedException(token,exception) \
98{ \
99 (void) ThrowMagickException(exception,GetMagickModule(),DrawError, \
100 "NonconformingDrawingPrimitiveDefinition","`%s'",token); \
101 status=MagickFalse; \
102 break; \
103}
104␌
105/*
106 Typedef declarations.
107*/
108typedef struct _EdgeInfo
109{
110 SegmentInfo
111 bounds;
112
113 double
114 scanline;
115
116 PointInfo
117 *points;
118
119 size_t
120 number_points;
121
122 ssize_t
123 direction;
124
125 MagickBooleanType
126 ghostline;
127
128 size_t
129 highwater;
130} EdgeInfo;
131
132typedef struct _ElementInfo
133{
134 double
135 cx,
136 cy,
137 major,
138 minor,
139 angle;
140} ElementInfo;
141
142typedef struct _MVGInfo
143{
144 PrimitiveInfo
145 **primitive_info;
146
147 size_t
148 *extent;
149
150 ssize_t
151 offset;
152
153 PointInfo
154 point;
155
156 ExceptionInfo
157 *exception;
158} MVGInfo;
159
160typedef struct _PolygonInfo
161{
162 EdgeInfo
163 *edges;
164
165 size_t
166 number_edges;
167} PolygonInfo;
168
169typedef enum
170{
171 MoveToCode,
172 OpenCode,
173 GhostlineCode,
174 LineToCode,
175 EndCode
176} PathInfoCode;
177
178typedef struct _PathInfo
179{
180 PointInfo
181 point;
182
183 PathInfoCode
184 code;
185} PathInfo;
186␌
187/*
188 Forward declarations.
189*/
190static Image
191 *DrawClippingMask(Image *,const DrawInfo *,const char *,const char *,
192 ExceptionInfo *);
193
194static MagickBooleanType
195 DrawStrokePolygon(Image *,const DrawInfo *,const PrimitiveInfo *,
196 ExceptionInfo *),
197 RenderMVGContent(Image *,const DrawInfo *,const size_t,ExceptionInfo *),
198 TraceArc(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
199 TraceArcPath(MVGInfo *,const PointInfo,const PointInfo,const PointInfo,
200 const double,const MagickBooleanType,const MagickBooleanType),
201 TraceBezier(MVGInfo *,const size_t),
202 TraceCircle(MVGInfo *,const PointInfo,const PointInfo),
203 TraceEllipse(MVGInfo *,const PointInfo,const PointInfo,const PointInfo),
204 TraceLine(PrimitiveInfo *,const PointInfo,const PointInfo),
205 TraceRectangle(PrimitiveInfo *,const PointInfo,const PointInfo),
206 TraceRoundRectangle(MVGInfo *,const PointInfo,const PointInfo,PointInfo),
207 TraceSquareLinecap(PrimitiveInfo *,const size_t,const double);
208
209static PrimitiveInfo
210 *TraceStrokePolygon(const DrawInfo *,const PrimitiveInfo *,ExceptionInfo *);
211
212static ssize_t
213 TracePath(MVGInfo *,const char *,ExceptionInfo *);
214␌
215/*
216%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
217% %
218% %
219% %
220% A c q u i r e D r a w I n f o %
221% %
222% %
223% %
224%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
225%
226% AcquireDrawInfo() returns a DrawInfo structure properly initialized.
227%
228% The format of the AcquireDrawInfo method is:
229%
230% DrawInfo *AcquireDrawInfo(void)
231%
232*/
233MagickExport DrawInfo *AcquireDrawInfo(void)
234{
235 DrawInfo
236 *draw_info;
237
238 draw_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*draw_info));
239 GetDrawInfo((ImageInfo *) NULL,draw_info);
240 return(draw_info);
241}
242␌
243/*
244%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245% %
246% %
247% %
248% C l o n e D r a w I n f o %
249% %
250% %
251% %
252%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
253%
254% CloneDrawInfo() makes a copy of the given draw_info structure. If NULL
255% is specified, a new DrawInfo structure is created initialized to default
256% values.
257%
258% The format of the CloneDrawInfo method is:
259%
260% DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
261% const DrawInfo *draw_info)
262%
263% A description of each parameter follows:
264%
265% o image_info: the image info.
266%
267% o draw_info: the draw info.
268%
269*/
270MagickExport DrawInfo *CloneDrawInfo(const ImageInfo *image_info,
271 const DrawInfo *draw_info)
272{
273 DrawInfo
274 *clone_info;
275
276 ExceptionInfo
277 *exception;
278
279 clone_info=(DrawInfo *) AcquireCriticalMemory(sizeof(*clone_info));
280 GetDrawInfo(image_info,clone_info);
281 if (draw_info == (DrawInfo *) NULL)
282 return(clone_info);
283 exception=AcquireExceptionInfo();
284 if (draw_info->id != (char *) NULL)
285 (void) CloneString(&clone_info->id,draw_info->id);
286 if (draw_info->primitive != (char *) NULL)
287 (void) CloneString(&clone_info->primitive,draw_info->primitive);
288 if (draw_info->geometry != (char *) NULL)
289 (void) CloneString(&clone_info->geometry,draw_info->geometry);
290 clone_info->compliance=draw_info->compliance;
291 clone_info->viewbox=draw_info->viewbox;
292 clone_info->affine=draw_info->affine;
293 clone_info->gravity=draw_info->gravity;
294 clone_info->fill=draw_info->fill;
295 clone_info->stroke=draw_info->stroke;
296 clone_info->stroke_width=draw_info->stroke_width;
297 if (draw_info->fill_pattern != (Image *) NULL)
298 clone_info->fill_pattern=CloneImage(draw_info->fill_pattern,0,0,MagickTrue,
299 exception);
300 if (draw_info->stroke_pattern != (Image *) NULL)
301 clone_info->stroke_pattern=CloneImage(draw_info->stroke_pattern,0,0,
302 MagickTrue,exception);
303 clone_info->stroke_antialias=draw_info->stroke_antialias;
304 clone_info->text_antialias=draw_info->text_antialias;
305 clone_info->fill_rule=draw_info->fill_rule;
306 clone_info->linecap=draw_info->linecap;
307 clone_info->linejoin=draw_info->linejoin;
308 clone_info->miterlimit=draw_info->miterlimit;
309 clone_info->dash_offset=draw_info->dash_offset;
310 clone_info->decorate=draw_info->decorate;
311 clone_info->compose=draw_info->compose;
312 if (draw_info->text != (char *) NULL)
313 (void) CloneString(&clone_info->text,draw_info->text);
314 if (draw_info->font != (char *) NULL)
315 (void) CloneString(&clone_info->font,draw_info->font);
316 if (draw_info->metrics != (char *) NULL)
317 (void) CloneString(&clone_info->metrics,draw_info->metrics);
318 if (draw_info->family != (char *) NULL)
319 (void) CloneString(&clone_info->family,draw_info->family);
320 clone_info->style=draw_info->style;
321 clone_info->stretch=draw_info->stretch;
322 clone_info->weight=draw_info->weight;
323 if (draw_info->encoding != (char *) NULL)
324 (void) CloneString(&clone_info->encoding,draw_info->encoding);
325 clone_info->pointsize=draw_info->pointsize;
326 clone_info->kerning=draw_info->kerning;
327 clone_info->interline_spacing=draw_info->interline_spacing;
328 clone_info->interword_spacing=draw_info->interword_spacing;
329 clone_info->direction=draw_info->direction;
330 clone_info->word_break=draw_info->word_break;
331 if (draw_info->density != (char *) NULL)
332 (void) CloneString(&clone_info->density,draw_info->density);
333 clone_info->align=draw_info->align;
334 clone_info->undercolor=draw_info->undercolor;
335 clone_info->border_color=draw_info->border_color;
336 if (draw_info->server_name != (char *) NULL)
337 (void) CloneString(&clone_info->server_name,draw_info->server_name);
338 if (draw_info->dash_pattern != (double *) NULL)
339 {
340 ssize_t
341 x;
342
343 for (x=0; fabs(draw_info->dash_pattern[x]) >= MagickEpsilon; x++) ;
344 clone_info->dash_pattern=(double *) AcquireQuantumMemory((size_t) (x+1),
345 sizeof(*clone_info->dash_pattern));
346 if (clone_info->dash_pattern == (double *) NULL)
347 ThrowFatalException(ResourceLimitFatalError,
348 "UnableToAllocateDashPattern");
349 (void) memset(clone_info->dash_pattern,0,(size_t) (x+1)*
350 sizeof(*clone_info->dash_pattern));
351 (void) memcpy(clone_info->dash_pattern,draw_info->dash_pattern,(size_t)
352 x*sizeof(*clone_info->dash_pattern));
353 }
354 clone_info->gradient=draw_info->gradient;
355 if (draw_info->gradient.stops != (StopInfo *) NULL)
356 {
357 size_t
358 number_stops;
359
360 number_stops=clone_info->gradient.number_stops;
361 clone_info->gradient.stops=(StopInfo *) AcquireQuantumMemory((size_t)
362 number_stops,sizeof(*clone_info->gradient.stops));
363 if (clone_info->gradient.stops == (StopInfo *) NULL)
364 ThrowFatalException(ResourceLimitFatalError,
365 "UnableToAllocateDashPattern");
366 (void) memcpy(clone_info->gradient.stops,draw_info->gradient.stops,
367 (size_t) number_stops*sizeof(*clone_info->gradient.stops));
368 }
369 clone_info->bounds=draw_info->bounds;
370 clone_info->fill_alpha=draw_info->fill_alpha;
371 clone_info->stroke_alpha=draw_info->stroke_alpha;
372 clone_info->element_reference=draw_info->element_reference;
373 clone_info->clip_path=draw_info->clip_path;
374 clone_info->clip_units=draw_info->clip_units;
375 if (draw_info->clip_mask != (char *) NULL)
376 (void) CloneString(&clone_info->clip_mask,draw_info->clip_mask);
377 if (draw_info->clipping_mask != (Image *) NULL)
378 clone_info->clipping_mask=CloneImage(draw_info->clipping_mask,0,0,
379 MagickTrue,exception);
380 if (draw_info->composite_mask != (Image *) NULL)
381 clone_info->composite_mask=CloneImage(draw_info->composite_mask,0,0,
382 MagickTrue,exception);
383 clone_info->render=draw_info->render;
384 clone_info->debug=draw_info->debug;
385 exception=DestroyExceptionInfo(exception);
386 return(clone_info);
387}
388␌
389/*
390%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
391% %
392% %
393% %
394+ C o n v e r t P a t h T o P o l y g o n %
395% %
396% %
397% %
398%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
399%
400% ConvertPathToPolygon() converts a path to the more efficient sorted
401% rendering form.
402%
403% The format of the ConvertPathToPolygon method is:
404%
405% PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
406% ExceptionInfo *exception)
407%
408% A description of each parameter follows:
409%
410% o ConvertPathToPolygon() returns the path in a more efficient sorted
411% rendering form of type PolygonInfo.
412%
413% o draw_info: Specifies a pointer to an DrawInfo structure.
414%
415% o path_info: Specifies a pointer to an PathInfo structure.
416%
417%
418*/
419
420static PolygonInfo *DestroyPolygonInfo(PolygonInfo *polygon_info)
421{
422 ssize_t
423 i;
424
425 if (polygon_info->edges != (EdgeInfo *) NULL)
426 {
427 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
428 if (polygon_info->edges[i].points != (PointInfo *) NULL)
429 polygon_info->edges[i].points=(PointInfo *)
430 RelinquishMagickMemory(polygon_info->edges[i].points);
431 polygon_info->edges=(EdgeInfo *) RelinquishMagickMemory(
432 polygon_info->edges);
433 }
434 return((PolygonInfo *) RelinquishMagickMemory(polygon_info));
435}
436#if defined(__cplusplus) || defined(c_plusplus)
437extern "C" {
438#endif
439
440static int DrawCompareEdges(const void *p_edge,const void *q_edge)
441{
442#define DrawCompareEdge(p,q) \
443{ \
444 if (((p)-(q)) < 0.0) \
445 return(-1); \
446 if (((p)-(q)) > 0.0) \
447 return(1); \
448}
449
450 const PointInfo
451 *p,
452 *q;
453
454 /*
455 Edge sorting for right-handed coordinate system.
456 */
457 p=((const EdgeInfo *) p_edge)->points;
458 q=((const EdgeInfo *) q_edge)->points;
459 DrawCompareEdge(p[0].y,q[0].y);
460 DrawCompareEdge(p[0].x,q[0].x);
461 DrawCompareEdge((p[1].x-p[0].x)*(q[1].y-q[0].y),(p[1].y-p[0].y)*
462 (q[1].x-q[0].x));
463 DrawCompareEdge(p[1].y,q[1].y);
464 DrawCompareEdge(p[1].x,q[1].x);
465 return(0);
466}
467
468#if defined(__cplusplus) || defined(c_plusplus)
469}
470#endif
471
472static void LogPolygonInfo(const PolygonInfo *polygon_info)
473{
474 EdgeInfo
475 *p;
476
477 ssize_t
478 i,
479 j;
480
481 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin active-edge");
482 p=polygon_info->edges;
483 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
484 {
485 (void) LogMagickEvent(DrawEvent,GetMagickModule()," edge %.20g:",
486 (double) i);
487 (void) LogMagickEvent(DrawEvent,GetMagickModule()," direction: %s",
488 p->direction != MagickFalse ? "down" : "up");
489 (void) LogMagickEvent(DrawEvent,GetMagickModule()," ghostline: %s",
490 p->ghostline != MagickFalse ? "transparent" : "opaque");
491 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
492 " bounds: %g,%g - %g,%g",p->bounds.x1,p->bounds.y1,
493 p->bounds.x2,p->bounds.y2);
494 for (j=0; j < (ssize_t) p->number_points; j++)
495 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %g,%g",
496 p->points[j].x,p->points[j].y);
497 p++;
498 }
499 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end active-edge");
500}
501
502static void ReversePoints(PointInfo *points,const size_t number_points)
503{
504 PointInfo
505 point;
506
507 size_t
508 i;
509
510 for (i=0; i < (number_points >> 1); i++)
511 {
512 point=points[i];
513 points[i]=points[number_points-(i+1)];
514 points[number_points-(i+1)]=point;
515 }
516}
517
518static PolygonInfo *ConvertPathToPolygon(const PathInfo *path_info,
519 ExceptionInfo *exception)
520{
521 long
522 direction,
523 next_direction;
524
525 PointInfo
526 point,
527 *points;
528
529 PolygonInfo
530 *polygon_info;
531
532 SegmentInfo
533 bounds;
534
535 ssize_t
536 i,
537 n;
538
539 MagickBooleanType
540 ghostline;
541
542 size_t
543 edge,
544 number_edges,
545 number_points;
546
547 /*
548 Convert a path to the more efficient sorted rendering form.
549 */
550 polygon_info=(PolygonInfo *) AcquireMagickMemory(sizeof(*polygon_info));
551 if (polygon_info == (PolygonInfo *) NULL)
552 {
553 (void) ThrowMagickException(exception,GetMagickModule(),
554 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
555 return((PolygonInfo *) NULL);
556 }
557 number_edges=16;
558 polygon_info->edges=(EdgeInfo *) AcquireQuantumMemory(number_edges,
559 sizeof(*polygon_info->edges));
560 if (polygon_info->edges == (EdgeInfo *) NULL)
561 {
562 (void) ThrowMagickException(exception,GetMagickModule(),
563 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
564 return(DestroyPolygonInfo(polygon_info));
565 }
566 (void) memset(polygon_info->edges,0,number_edges*
567 sizeof(*polygon_info->edges));
568 direction=0;
569 edge=0;
570 ghostline=MagickFalse;
571 n=0;
572 number_points=0;
573 points=(PointInfo *) NULL;
574 (void) memset(&point,0,sizeof(point));
575 (void) memset(&bounds,0,sizeof(bounds));
576 polygon_info->edges[edge].number_points=(size_t) n;
577 polygon_info->edges[edge].scanline=0.0;
578 polygon_info->edges[edge].highwater=0;
579 polygon_info->edges[edge].ghostline=ghostline;
580 polygon_info->edges[edge].direction=(ssize_t) direction;
581 polygon_info->edges[edge].points=points;
582 polygon_info->edges[edge].bounds=bounds;
583 polygon_info->number_edges=0;
584 for (i=0; path_info[i].code != EndCode; i++)
585 {
586 if ((path_info[i].code == MoveToCode) || (path_info[i].code == OpenCode) ||
587 (path_info[i].code == GhostlineCode))
588 {
589 /*
590 Move to.
591 */
592 if ((points != (PointInfo *) NULL) && (n >= 2))
593 {
594 if (edge == number_edges)
595 {
596 number_edges<<=1;
597 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
598 polygon_info->edges,(size_t) number_edges,
599 sizeof(*polygon_info->edges));
600 if (polygon_info->edges == (EdgeInfo *) NULL)
601 {
602 (void) ThrowMagickException(exception,GetMagickModule(),
603 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
604 points=(PointInfo *) RelinquishMagickMemory(points);
605 return(DestroyPolygonInfo(polygon_info));
606 }
607 }
608 polygon_info->edges[edge].number_points=(size_t) n;
609 polygon_info->edges[edge].scanline=(-1.0);
610 polygon_info->edges[edge].highwater=0;
611 polygon_info->edges[edge].ghostline=ghostline;
612 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
613 if (direction < 0)
614 ReversePoints(points,(size_t) n);
615 polygon_info->edges[edge].points=points;
616 polygon_info->edges[edge].bounds=bounds;
617 polygon_info->edges[edge].bounds.y1=points[0].y;
618 polygon_info->edges[edge].bounds.y2=points[n-1].y;
619 points=(PointInfo *) NULL;
620 ghostline=MagickFalse;
621 edge++;
622 polygon_info->number_edges=edge;
623 }
624 if (points == (PointInfo *) NULL)
625 {
626 number_points=16;
627 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
628 sizeof(*points));
629 if (points == (PointInfo *) NULL)
630 {
631 (void) ThrowMagickException(exception,GetMagickModule(),
632 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
633 return(DestroyPolygonInfo(polygon_info));
634 }
635 }
636 ghostline=path_info[i].code == GhostlineCode ? MagickTrue : MagickFalse;
637 point=path_info[i].point;
638 points[0]=point;
639 bounds.x1=point.x;
640 bounds.x2=point.x;
641 direction=0;
642 n=1;
643 continue;
644 }
645 /*
646 Line to.
647 */
648 next_direction=((path_info[i].point.y > point.y) ||
649 ((fabs(path_info[i].point.y-point.y) < MagickEpsilon) &&
650 (path_info[i].point.x > point.x))) ? 1 : -1;
651 if ((points != (PointInfo *) NULL) && (direction != 0) &&
652 (direction != next_direction))
653 {
654 /*
655 New edge.
656 */
657 point=points[n-1];
658 if (edge == number_edges)
659 {
660 number_edges<<=1;
661 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
662 polygon_info->edges,(size_t) number_edges,
663 sizeof(*polygon_info->edges));
664 if (polygon_info->edges == (EdgeInfo *) NULL)
665 {
666 (void) ThrowMagickException(exception,GetMagickModule(),
667 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
668 points=(PointInfo *) RelinquishMagickMemory(points);
669 return(DestroyPolygonInfo(polygon_info));
670 }
671 }
672 polygon_info->edges[edge].number_points=(size_t) n;
673 polygon_info->edges[edge].scanline=(-1.0);
674 polygon_info->edges[edge].highwater=0;
675 polygon_info->edges[edge].ghostline=ghostline;
676 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
677 if (direction < 0)
678 ReversePoints(points,(size_t) n);
679 polygon_info->edges[edge].points=points;
680 polygon_info->edges[edge].bounds=bounds;
681 polygon_info->edges[edge].bounds.y1=points[0].y;
682 polygon_info->edges[edge].bounds.y2=points[n-1].y;
683 polygon_info->number_edges=edge+1;
684 points=(PointInfo *) NULL;
685 number_points=16;
686 points=(PointInfo *) AcquireQuantumMemory((size_t) number_points,
687 sizeof(*points));
688 if (points == (PointInfo *) NULL)
689 {
690 (void) ThrowMagickException(exception,GetMagickModule(),
691 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
692 return(DestroyPolygonInfo(polygon_info));
693 }
694 n=1;
695 ghostline=MagickFalse;
696 points[0]=point;
697 bounds.x1=point.x;
698 bounds.x2=point.x;
699 edge++;
700 }
701 direction=next_direction;
702 if (points == (PointInfo *) NULL)
703 continue;
704 if (n == (ssize_t) number_points)
705 {
706 number_points<<=1;
707 points=(PointInfo *) ResizeQuantumMemory(points,(size_t) number_points,
708 sizeof(*points));
709 if (points == (PointInfo *) NULL)
710 {
711 (void) ThrowMagickException(exception,GetMagickModule(),
712 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
713 return(DestroyPolygonInfo(polygon_info));
714 }
715 }
716 point=path_info[i].point;
717 points[n]=point;
718 if (point.x < bounds.x1)
719 bounds.x1=point.x;
720 if (point.x > bounds.x2)
721 bounds.x2=point.x;
722 n++;
723 }
724 if (points != (PointInfo *) NULL)
725 {
726 if (n < 2)
727 points=(PointInfo *) RelinquishMagickMemory(points);
728 else
729 {
730 if (edge == number_edges)
731 {
732 number_edges<<=1;
733 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(
734 polygon_info->edges,(size_t) number_edges,
735 sizeof(*polygon_info->edges));
736 if (polygon_info->edges == (EdgeInfo *) NULL)
737 {
738 (void) ThrowMagickException(exception,GetMagickModule(),
739 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
740 return(DestroyPolygonInfo(polygon_info));
741 }
742 }
743 polygon_info->edges[edge].number_points=(size_t) n;
744 polygon_info->edges[edge].scanline=(-1.0);
745 polygon_info->edges[edge].highwater=0;
746 polygon_info->edges[edge].ghostline=ghostline;
747 polygon_info->edges[edge].direction=(ssize_t) (direction > 0);
748 if (direction < 0)
749 ReversePoints(points,(size_t) n);
750 polygon_info->edges[edge].points=points;
751 polygon_info->edges[edge].bounds=bounds;
752 polygon_info->edges[edge].bounds.y1=points[0].y;
753 polygon_info->edges[edge].bounds.y2=points[n-1].y;
754 points=(PointInfo *) NULL;
755 ghostline=MagickFalse;
756 edge++;
757 polygon_info->number_edges=edge;
758 }
759 }
760 polygon_info->number_edges=edge;
761 polygon_info->edges=(EdgeInfo *) ResizeQuantumMemory(polygon_info->edges,
762 polygon_info->number_edges,sizeof(*polygon_info->edges));
763 if (polygon_info->edges == (EdgeInfo *) NULL)
764 {
765 (void) ThrowMagickException(exception,GetMagickModule(),
766 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
767 return(DestroyPolygonInfo(polygon_info));
768 }
769 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
770 {
771 EdgeInfo
772 *edge_info;
773
774 edge_info=polygon_info->edges+i;
775 edge_info->points=(PointInfo *) ResizeQuantumMemory(edge_info->points,
776 edge_info->number_points,sizeof(*edge_info->points));
777 if (edge_info->points == (PointInfo *) NULL)
778 {
779 (void) ThrowMagickException(exception,GetMagickModule(),
780 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
781 return(DestroyPolygonInfo(polygon_info));
782 }
783 }
784 qsort(polygon_info->edges,(size_t) polygon_info->number_edges,
785 sizeof(*polygon_info->edges),DrawCompareEdges);
786 if ((GetLogEventMask() & DrawEvent) != 0)
787 LogPolygonInfo(polygon_info);
788 return(polygon_info);
789}
790␌
791/*
792%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
793% %
794% %
795% %
796+ C o n v e r t P r i m i t i v e T o P a t h %
797% %
798% %
799% %
800%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
801%
802% ConvertPrimitiveToPath() converts a PrimitiveInfo structure into a vector
803% path structure.
804%
805% The format of the ConvertPrimitiveToPath method is:
806%
807% PathInfo *ConvertPrimitiveToPath(const DrawInfo *draw_info,
808% const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
809%
810% A description of each parameter follows:
811%
812% o ConvertPrimitiveToPath() returns a vector path structure of type
813% PathInfo.
814%
815% o draw_info: a structure of type DrawInfo.
816%
817% o primitive_info: Specifies a pointer to an PrimitiveInfo structure.
818%
819*/
820
821static void LogPathInfo(const PathInfo *path_info)
822{
823 const PathInfo
824 *p;
825
826 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin vector-path");
827 for (p=path_info; p->code != EndCode; p++)
828 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
829 " %g,%g %s",p->point.x,p->point.y,p->code == GhostlineCode ?
830 "moveto ghostline" : p->code == OpenCode ? "moveto open" :
831 p->code == MoveToCode ? "moveto" : p->code == LineToCode ? "lineto" :
832 "?");
833 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end vector-path");
834}
835
836static PathInfo *ConvertPrimitiveToPath(const PrimitiveInfo *primitive_info,
837 ExceptionInfo *exception)
838{
839 MagickBooleanType
840 closed_subpath;
841
842 PathInfo
843 *path_info;
844
845 PathInfoCode
846 code;
847
848 PointInfo
849 p,
850 q;
851
852 ssize_t
853 n,
854 start;
855
856 size_t
857 coordinates,
858 i;
859
860 /*
861 Converts a PrimitiveInfo structure into a vector path structure.
862 */
863 switch (primitive_info->primitive)
864 {
865 case AlphaPrimitive:
866 case ColorPrimitive:
867 case ImagePrimitive:
868 case PointPrimitive:
869 case TextPrimitive:
870 return((PathInfo *) NULL);
871 default:
872 break;
873 }
874 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
875 path_info=(PathInfo *) AcquireQuantumMemory((size_t) (3UL*i+1UL),
876 sizeof(*path_info));
877 if (path_info == (PathInfo *) NULL)
878 {
879 (void) ThrowMagickException(exception,GetMagickModule(),
880 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
881 return((PathInfo *) NULL);
882 }
883 coordinates=0;
884 closed_subpath=MagickFalse;
885 n=0;
886 p.x=(-1.0);
887 p.y=(-1.0);
888 q.x=(-1.0);
889 q.y=(-1.0);
890 start=0;
891 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
892 {
893 code=LineToCode;
894 if (coordinates <= 0)
895 {
896 /*
897 New subpath.
898 */
899 coordinates=primitive_info[i].coordinates;
900 p=primitive_info[i].point;
901 start=n;
902 code=MoveToCode;
903 closed_subpath=primitive_info[i].closed_subpath;
904 }
905 coordinates--;
906 if ((code == MoveToCode) || (coordinates <= 0) ||
907 (fabs(q.x-primitive_info[i].point.x) >= MagickEpsilon) ||
908 (fabs(q.y-primitive_info[i].point.y) >= MagickEpsilon))
909 {
910 /*
911 Eliminate duplicate points.
912 */
913 path_info[n].code=code;
914 path_info[n].point=primitive_info[i].point;
915 q=primitive_info[i].point;
916 n++;
917 }
918 if (coordinates > 0)
919 continue; /* next point in current subpath */
920 if (closed_subpath != MagickFalse)
921 {
922 closed_subpath=MagickFalse;
923 continue;
924 }
925 /*
926 Mark the p point as open if the subpath is not closed.
927 */
928 path_info[start].code=OpenCode;
929 path_info[n].code=GhostlineCode;
930 path_info[n].point=primitive_info[i].point;
931 n++;
932 path_info[n].code=LineToCode;
933 path_info[n].point=p;
934 n++;
935 }
936 path_info[n].code=EndCode;
937 path_info[n].point.x=0.0;
938 path_info[n].point.y=0.0;
939 if (IsEventLogging() != MagickFalse)
940 LogPathInfo(path_info);
941 path_info=(PathInfo *) ResizeQuantumMemory(path_info,(size_t) (n+1),
942 sizeof(*path_info));
943 return(path_info);
944}
945␌
946/*
947%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
948% %
949% %
950% %
951% D e s t r o y D r a w I n f o %
952% %
953% %
954% %
955%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
956%
957% DestroyDrawInfo() deallocates memory associated with an DrawInfo structure.
958%
959% The format of the DestroyDrawInfo method is:
960%
961% DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
962%
963% A description of each parameter follows:
964%
965% o draw_info: the draw info.
966%
967*/
968MagickExport DrawInfo *DestroyDrawInfo(DrawInfo *draw_info)
969{
970 assert(draw_info != (DrawInfo *) NULL);
971 assert(draw_info->signature == MagickCoreSignature);
972 if (IsEventLogging() != MagickFalse)
973 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
974 if (draw_info->id != (char *) NULL)
975 draw_info->id=DestroyString(draw_info->id);
976 if (draw_info->primitive != (char *) NULL)
977 draw_info->primitive=DestroyString(draw_info->primitive);
978 if (draw_info->text != (char *) NULL)
979 draw_info->text=DestroyString(draw_info->text);
980 if (draw_info->geometry != (char *) NULL)
981 draw_info->geometry=DestroyString(draw_info->geometry);
982 if (draw_info->fill_pattern != (Image *) NULL)
983 draw_info->fill_pattern=DestroyImage(draw_info->fill_pattern);
984 if (draw_info->stroke_pattern != (Image *) NULL)
985 draw_info->stroke_pattern=DestroyImage(draw_info->stroke_pattern);
986 if (draw_info->font != (char *) NULL)
987 draw_info->font=DestroyString(draw_info->font);
988 if (draw_info->metrics != (char *) NULL)
989 draw_info->metrics=DestroyString(draw_info->metrics);
990 if (draw_info->family != (char *) NULL)
991 draw_info->family=DestroyString(draw_info->family);
992 if (draw_info->encoding != (char *) NULL)
993 draw_info->encoding=DestroyString(draw_info->encoding);
994 if (draw_info->density != (char *) NULL)
995 draw_info->density=DestroyString(draw_info->density);
996 if (draw_info->server_name != (char *) NULL)
997 draw_info->server_name=(char *)
998 RelinquishMagickMemory(draw_info->server_name);
999 if (draw_info->dash_pattern != (double *) NULL)
1000 draw_info->dash_pattern=(double *) RelinquishMagickMemory(
1001 draw_info->dash_pattern);
1002 if (draw_info->gradient.stops != (StopInfo *) NULL)
1003 draw_info->gradient.stops=(StopInfo *) RelinquishMagickMemory(
1004 draw_info->gradient.stops);
1005 if (draw_info->clip_mask != (char *) NULL)
1006 draw_info->clip_mask=DestroyString(draw_info->clip_mask);
1007 if (draw_info->clipping_mask != (Image *) NULL)
1008 draw_info->clipping_mask=DestroyImage(draw_info->clipping_mask);
1009 if (draw_info->composite_mask != (Image *) NULL)
1010 draw_info->composite_mask=DestroyImage(draw_info->composite_mask);
1011 if (draw_info->image_info != (ImageInfo *) NULL)
1012 draw_info->image_info=DestroyImageInfo(draw_info->image_info);
1013 draw_info->signature=(~MagickCoreSignature);
1014 draw_info=(DrawInfo *) RelinquishMagickMemory(draw_info);
1015 return(draw_info);
1016}
1017␌
1018/*
1019%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1020% %
1021% %
1022% %
1023% D r a w A f f i n e I m a g e %
1024% %
1025% %
1026% %
1027%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1028%
1029% DrawAffineImage() composites the source over the destination image as
1030% dictated by the affine transform.
1031%
1032% The format of the DrawAffineImage method is:
1033%
1034% MagickBooleanType DrawAffineImage(Image *image,const Image *source,
1035% const AffineMatrix *affine,ExceptionInfo *exception)
1036%
1037% A description of each parameter follows:
1038%
1039% o image: the image.
1040%
1041% o source: the source image.
1042%
1043% o affine: the affine transform.
1044%
1045% o exception: return any errors or warnings in this structure.
1046%
1047*/
1048
1049static SegmentInfo AffineEdge(const Image *image,const AffineMatrix *affine,
1050 const double y,const SegmentInfo *edge)
1051{
1052 double
1053 intercept,
1054 z;
1055
1056 double
1057 x;
1058
1059 SegmentInfo
1060 inverse_edge;
1061
1062 /*
1063 Determine left and right edges.
1064 */
1065 inverse_edge.x1=edge->x1;
1066 inverse_edge.y1=edge->y1;
1067 inverse_edge.x2=edge->x2;
1068 inverse_edge.y2=edge->y2;
1069 z=affine->ry*y+affine->tx;
1070 if (affine->sx >= MagickEpsilon)
1071 {
1072 intercept=(-z/affine->sx);
1073 x=intercept;
1074 if (x > inverse_edge.x1)
1075 inverse_edge.x1=x;
1076 intercept=(-z+(double) image->columns)/affine->sx;
1077 x=intercept;
1078 if (x < inverse_edge.x2)
1079 inverse_edge.x2=x;
1080 }
1081 else
1082 if (affine->sx < -MagickEpsilon)
1083 {
1084 intercept=(-z+(double) image->columns)/affine->sx;
1085 x=intercept;
1086 if (x > inverse_edge.x1)
1087 inverse_edge.x1=x;
1088 intercept=(-z/affine->sx);
1089 x=intercept;
1090 if (x < inverse_edge.x2)
1091 inverse_edge.x2=x;
1092 }
1093 else
1094 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->columns))
1095 {
1096 inverse_edge.x2=edge->x1;
1097 return(inverse_edge);
1098 }
1099 /*
1100 Determine top and bottom edges.
1101 */
1102 z=affine->sy*y+affine->ty;
1103 if (affine->rx >= MagickEpsilon)
1104 {
1105 intercept=(-z/affine->rx);
1106 x=intercept;
1107 if (x > inverse_edge.x1)
1108 inverse_edge.x1=x;
1109 intercept=(-z+(double) image->rows)/affine->rx;
1110 x=intercept;
1111 if (x < inverse_edge.x2)
1112 inverse_edge.x2=x;
1113 }
1114 else
1115 if (affine->rx < -MagickEpsilon)
1116 {
1117 intercept=(-z+(double) image->rows)/affine->rx;
1118 x=intercept;
1119 if (x > inverse_edge.x1)
1120 inverse_edge.x1=x;
1121 intercept=(-z/affine->rx);
1122 x=intercept;
1123 if (x < inverse_edge.x2)
1124 inverse_edge.x2=x;
1125 }
1126 else
1127 if ((z < 0.0) || ((size_t) floor(z+0.5) >= image->rows))
1128 {
1129 inverse_edge.x2=edge->x2;
1130 return(inverse_edge);
1131 }
1132 return(inverse_edge);
1133}
1134
1135static AffineMatrix InverseAffineMatrix(const AffineMatrix *affine)
1136{
1137 AffineMatrix
1138 inverse_affine;
1139
1140 double
1141 determinant;
1142
1143 determinant=MagickSafeReciprocal(affine->sx*affine->sy-affine->rx*
1144 affine->ry);
1145 inverse_affine.sx=determinant*affine->sy;
1146 inverse_affine.rx=determinant*(-affine->rx);
1147 inverse_affine.ry=determinant*(-affine->ry);
1148 inverse_affine.sy=determinant*affine->sx;
1149 inverse_affine.tx=(-affine->tx)*inverse_affine.sx-affine->ty*
1150 inverse_affine.ry;
1151 inverse_affine.ty=(-affine->tx)*inverse_affine.rx-affine->ty*
1152 inverse_affine.sy;
1153 return(inverse_affine);
1154}
1155
1156MagickExport MagickBooleanType DrawAffineImage(Image *image,
1157 const Image *source,const AffineMatrix *affine,ExceptionInfo *exception)
1158{
1159 AffineMatrix
1160 inverse_affine;
1161
1162 CacheView
1163 *image_view,
1164 *source_view;
1165
1166 MagickBooleanType
1167 status;
1168
1169 PixelInfo
1170 zero;
1171
1172 PointInfo
1173 extent[4],
1174 min,
1175 max;
1176
1177 ssize_t
1178 i;
1179
1180 SegmentInfo
1181 edge;
1182
1183 ssize_t
1184 start,
1185 stop,
1186 y;
1187
1188 /*
1189 Determine bounding box.
1190 */
1191 assert(image != (Image *) NULL);
1192 assert(image->signature == MagickCoreSignature);
1193 if (IsEventLogging() != MagickFalse)
1194 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1195 assert(source != (const Image *) NULL);
1196 assert(source->signature == MagickCoreSignature);
1197 assert(affine != (AffineMatrix *) NULL);
1198 extent[0].x=0.0;
1199 extent[0].y=0.0;
1200 extent[1].x=(double) source->columns;
1201 extent[1].y=0.0;
1202 extent[2].x=(double) source->columns;
1203 extent[2].y=(double) source->rows;
1204 extent[3].x=0.0;
1205 extent[3].y=(double) source->rows;
1206 for (i=0; i < 4; i++)
1207 {
1208 PointInfo
1209 point;
1210
1211 point=extent[i];
1212 extent[i].x=point.x*affine->sx+point.y*affine->ry+affine->tx;
1213 extent[i].y=point.x*affine->rx+point.y*affine->sy+affine->ty;
1214 }
1215 min=extent[0];
1216 max=extent[0];
1217 for (i=1; i < 4; i++)
1218 {
1219 if (min.x > extent[i].x)
1220 min.x=extent[i].x;
1221 if (min.y > extent[i].y)
1222 min.y=extent[i].y;
1223 if (max.x < extent[i].x)
1224 max.x=extent[i].x;
1225 if (max.y < extent[i].y)
1226 max.y=extent[i].y;
1227 }
1228 /*
1229 Affine transform image.
1230 */
1231 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
1232 return(MagickFalse);
1233 status=MagickTrue;
1234 edge.x1=min.x;
1235 edge.y1=min.y;
1236 edge.x2=max.x;
1237 edge.y2=max.y;
1238 inverse_affine=InverseAffineMatrix(affine);
1239 if (edge.y1 < 0.0)
1240 edge.y1=0.0;
1241 if (edge.y2 > ((double) image->rows-1.0))
1242 edge.y2=(double) image->rows-1.0;
1243 GetPixelInfo(image,&zero);
1244 start=CastDoubleToSsizeT(ceil(edge.y1-0.5));
1245 stop=CastDoubleToSsizeT(floor(edge.y2+0.5));
1246 source_view=AcquireVirtualCacheView(source,exception);
1247 image_view=AcquireAuthenticCacheView(image,exception);
1248#if defined(MAGICKCORE_OPENMP_SUPPORT)
1249 #pragma omp parallel for schedule(static) shared(status) \
1250 magick_number_threads(source,image,(size_t) (stop-start),2)
1251#endif
1252 for (y=start; y <= stop; y++)
1253 {
1254 PixelInfo
1255 composite,
1256 pixel;
1257
1258 PointInfo
1259 point;
1260
1261 Quantum
1262 *magick_restrict q;
1263
1264 SegmentInfo
1265 inverse_edge;
1266
1267 ssize_t
1268 x;
1269
1270 if (status == MagickFalse)
1271 continue;
1272 inverse_edge=AffineEdge(source,&inverse_affine,(double) y,&edge);
1273 if (inverse_edge.x2 < inverse_edge.x1)
1274 continue;
1275 if (inverse_edge.x1 < 0.0)
1276 inverse_edge.x1=0.0;
1277 if (inverse_edge.x2 > ((double) image->columns-1.0))
1278 inverse_edge.x2=(double) image->columns-1.0;
1279 q=GetCacheViewAuthenticPixels(image_view,CastDoubleToSsizeT(
1280 ceil(inverse_edge.x1-0.5)),y,(size_t) CastDoubleToSsizeT(floor(
1281 inverse_edge.x2+0.5)-ceil(inverse_edge.x1-0.5)+1),1,exception);
1282 if (q == (Quantum *) NULL)
1283 continue;
1284 pixel=zero;
1285 composite=zero;
1286 for (x=CastDoubleToSsizeT(ceil(inverse_edge.x1-0.5));
1287 x <= CastDoubleToSsizeT(floor(inverse_edge.x2+0.5)); x++)
1288 {
1289 point.x=(double) x*inverse_affine.sx+y*inverse_affine.ry+
1290 inverse_affine.tx;
1291 point.y=(double) x*inverse_affine.rx+y*inverse_affine.sy+
1292 inverse_affine.ty;
1293 status=InterpolatePixelInfo(source,source_view,UndefinedInterpolatePixel,
1294 point.x,point.y,&pixel,exception);
1295 if (status == MagickFalse)
1296 break;
1297 GetPixelInfoPixel(image,q,&composite);
1298 CompositePixelInfoOver(&pixel,pixel.alpha,&composite,composite.alpha,
1299 &composite);
1300 SetPixelViaPixelInfo(image,&composite,q);
1301 q+=(ptrdiff_t) GetPixelChannels(image);
1302 }
1303 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
1304 status=MagickFalse;
1305 }
1306 source_view=DestroyCacheView(source_view);
1307 image_view=DestroyCacheView(image_view);
1308 return(status);
1309}
1310␌
1311/*
1312%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1313% %
1314% %
1315% %
1316+ D r a w B o u n d i n g R e c t a n g l e s %
1317% %
1318% %
1319% %
1320%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1321%
1322% DrawBoundingRectangles() draws the bounding rectangles on the image. This
1323% is only useful for developers debugging the rendering algorithm.
1324%
1325% The format of the DrawBoundingRectangles method is:
1326%
1327% MagickBooleanType DrawBoundingRectangles(Image *image,
1328% const DrawInfo *draw_info,PolygonInfo *polygon_info,
1329% ExceptionInfo *exception)
1330%
1331% A description of each parameter follows:
1332%
1333% o image: the image.
1334%
1335% o draw_info: the draw info.
1336%
1337% o polygon_info: Specifies a pointer to a PolygonInfo structure.
1338%
1339% o exception: return any errors or warnings in this structure.
1340%
1341*/
1342
1343static MagickBooleanType DrawBoundingRectangles(Image *image,
1344 const DrawInfo *draw_info,const PolygonInfo *polygon_info,
1345 ExceptionInfo *exception)
1346{
1347 double
1348 mid;
1349
1350 DrawInfo
1351 *clone_info;
1352
1353 MagickStatusType
1354 status;
1355
1356 PointInfo
1357 end,
1358 resolution,
1359 start;
1360
1361 PrimitiveInfo
1362 primitive_info[6];
1363
1364 ssize_t
1365 i;
1366
1367 SegmentInfo
1368 bounds;
1369
1370 ssize_t
1371 coordinates;
1372
1373 (void) memset(primitive_info,0,sizeof(primitive_info));
1374 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1375 status=QueryColorCompliance("#000F",AllCompliance,&clone_info->fill,
1376 exception);
1377 if (status == MagickFalse)
1378 {
1379 clone_info=DestroyDrawInfo(clone_info);
1380 return(MagickFalse);
1381 }
1382 resolution.x=96.0;
1383 resolution.y=96.0;
1384 if (clone_info->density != (char *) NULL)
1385 {
1386 GeometryInfo
1387 geometry_info;
1388
1389 MagickStatusType
1390 flags;
1391
1392 flags=ParseGeometry(clone_info->density,&geometry_info);
1393 if ((flags & RhoValue) != 0)
1394 resolution.x=geometry_info.rho;
1395 resolution.y=resolution.x;
1396 if ((flags & SigmaValue) != 0)
1397 resolution.y=geometry_info.sigma;
1398 }
1399 mid=(resolution.x/96.0)*ExpandAffine(&clone_info->affine)*
1400 clone_info->stroke_width/2.0;
1401 bounds.x1=0.0;
1402 bounds.y1=0.0;
1403 bounds.x2=0.0;
1404 bounds.y2=0.0;
1405 if (polygon_info != (PolygonInfo *) NULL)
1406 {
1407 bounds=polygon_info->edges[0].bounds;
1408 for (i=1; i < (ssize_t) polygon_info->number_edges; i++)
1409 {
1410 if (polygon_info->edges[i].bounds.x1 < (double) bounds.x1)
1411 bounds.x1=polygon_info->edges[i].bounds.x1;
1412 if (polygon_info->edges[i].bounds.y1 < (double) bounds.y1)
1413 bounds.y1=polygon_info->edges[i].bounds.y1;
1414 if (polygon_info->edges[i].bounds.x2 > (double) bounds.x2)
1415 bounds.x2=polygon_info->edges[i].bounds.x2;
1416 if (polygon_info->edges[i].bounds.y2 > (double) bounds.y2)
1417 bounds.y2=polygon_info->edges[i].bounds.y2;
1418 }
1419 bounds.x1-=mid;
1420 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double)
1421 image->columns ? (double) image->columns-1 : bounds.x1;
1422 bounds.y1-=mid;
1423 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double)
1424 image->rows ? (double) image->rows-1 : bounds.y1;
1425 bounds.x2+=mid;
1426 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double)
1427 image->columns ? (double) image->columns-1 : bounds.x2;
1428 bounds.y2+=mid;
1429 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double)
1430 image->rows ? (double) image->rows-1 : bounds.y2;
1431 for (i=0; i < (ssize_t) polygon_info->number_edges; i++)
1432 {
1433 if (polygon_info->edges[i].direction != 0)
1434 status=QueryColorCompliance("#f00",AllCompliance,&clone_info->stroke,
1435 exception);
1436 else
1437 status=QueryColorCompliance("#0f0",AllCompliance,&clone_info->stroke,
1438 exception);
1439 if (status == MagickFalse)
1440 break;
1441 start.x=(double) (polygon_info->edges[i].bounds.x1-mid);
1442 start.y=(double) (polygon_info->edges[i].bounds.y1-mid);
1443 end.x=(double) (polygon_info->edges[i].bounds.x2+mid);
1444 end.y=(double) (polygon_info->edges[i].bounds.y2+mid);
1445 primitive_info[0].primitive=RectanglePrimitive;
1446 status&=(MagickStatusType) TraceRectangle(primitive_info,start,end);
1447 primitive_info[0].method=ReplaceMethod;
1448 coordinates=(ssize_t) primitive_info[0].coordinates;
1449 primitive_info[coordinates].primitive=UndefinedPrimitive;
1450 status=DrawPrimitive(image,clone_info,primitive_info,exception);
1451 if (status == MagickFalse)
1452 break;
1453 }
1454 if (i < (ssize_t) polygon_info->number_edges)
1455 {
1456 clone_info=DestroyDrawInfo(clone_info);
1457 return(status == 0 ? MagickFalse : MagickTrue);
1458 }
1459 }
1460 status=QueryColorCompliance("#00f",AllCompliance,&clone_info->stroke,
1461 exception);
1462 if (status == MagickFalse)
1463 {
1464 clone_info=DestroyDrawInfo(clone_info);
1465 return(MagickFalse);
1466 }
1467 start.x=(double) (bounds.x1-mid);
1468 start.y=(double) (bounds.y1-mid);
1469 end.x=(double) (bounds.x2+mid);
1470 end.y=(double) (bounds.y2+mid);
1471 primitive_info[0].primitive=RectanglePrimitive;
1472 status&=(MagickStatusType) TraceRectangle(primitive_info,start,end);
1473 primitive_info[0].method=ReplaceMethod;
1474 coordinates=(ssize_t) primitive_info[0].coordinates;
1475 primitive_info[coordinates].primitive=UndefinedPrimitive;
1476 status=DrawPrimitive(image,clone_info,primitive_info,exception);
1477 clone_info=DestroyDrawInfo(clone_info);
1478 return(status == 0 ? MagickFalse : MagickTrue);
1479}
1480␌
1481/*
1482%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1483% %
1484% %
1485% %
1486% D r a w C l i p P a t h %
1487% %
1488% %
1489% %
1490%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1491%
1492% DrawClipPath() draws the clip path on the image mask.
1493%
1494% The format of the DrawClipPath method is:
1495%
1496% MagickBooleanType DrawClipPath(Image *image,const DrawInfo *draw_info,
1497% const char *id,ExceptionInfo *exception)
1498%
1499% A description of each parameter follows:
1500%
1501% o image: the image.
1502%
1503% o draw_info: the draw info.
1504%
1505% o id: the clip path id.
1506%
1507% o exception: return any errors or warnings in this structure.
1508%
1509*/
1510MagickExport MagickBooleanType DrawClipPath(Image *image,
1511 const DrawInfo *draw_info,const char *id,ExceptionInfo *exception)
1512{
1513 const char
1514 *clip_path;
1515
1516 Image
1517 *clipping_mask;
1518
1519 MagickBooleanType
1520 status;
1521
1522 clip_path=GetImageArtifact(image,id);
1523 if (clip_path == (const char *) NULL)
1524 return(MagickFalse);
1525 clipping_mask=DrawClippingMask(image,draw_info,draw_info->clip_mask,clip_path,
1526 exception);
1527 if (clipping_mask == (Image *) NULL)
1528 return(MagickFalse);
1529 status=SetImageMask(image,WritePixelMask,clipping_mask,exception);
1530 clipping_mask=DestroyImage(clipping_mask);
1531 return(status);
1532}
1533␌
1534/*
1535%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1536% %
1537% %
1538% %
1539% D r a w C l i p p i n g M a s k %
1540% %
1541% %
1542% %
1543%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1544%
1545% DrawClippingMask() draws the clip path and returns it as an image clipping
1546% mask.
1547%
1548% The format of the DrawClippingMask method is:
1549%
1550% Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1551% const char *id,const char *clip_path,ExceptionInfo *exception)
1552%
1553% A description of each parameter follows:
1554%
1555% o image: the image.
1556%
1557% o draw_info: the draw info.
1558%
1559% o id: the clip path id.
1560%
1561% o clip_path: the clip path.
1562%
1563% o exception: return any errors or warnings in this structure.
1564%
1565*/
1566static Image *DrawClippingMask(Image *image,const DrawInfo *draw_info,
1567 const char *id,const char *clip_path,ExceptionInfo *exception)
1568{
1569 DrawInfo
1570 *clone_info;
1571
1572 Image
1573 *clip_mask,
1574 *separate_mask;
1575
1576 MagickStatusType
1577 status;
1578
1579 /*
1580 Draw a clip path.
1581 */
1582 assert(image != (Image *) NULL);
1583 assert(image->signature == MagickCoreSignature);
1584 assert(draw_info != (const DrawInfo *) NULL);
1585 if (IsEventLogging() != MagickFalse)
1586 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1587 clip_mask=AcquireImage((const ImageInfo *) NULL,exception);
1588 status=SetImageExtent(clip_mask,image->columns,image->rows,exception);
1589 if (status == MagickFalse)
1590 return(DestroyImage(clip_mask));
1591 status=SetImageMask(clip_mask,WritePixelMask,(Image *) NULL,exception);
1592 status=QueryColorCompliance("#0000",AllCompliance,
1593 &clip_mask->background_color,exception);
1594 clip_mask->background_color.alpha=(MagickRealType) TransparentAlpha;
1595 clip_mask->background_color.alpha_trait=BlendPixelTrait;
1596 status=SetImageBackgroundColor(clip_mask,exception);
1597 if (draw_info->debug != MagickFalse)
1598 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin clip-path %s",
1599 id);
1600 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1601 (void) CloneString(&clone_info->primitive,clip_path);
1602 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1603 exception);
1604 if (clone_info->clip_mask != (char *) NULL)
1605 clone_info->clip_mask=DestroyString(clone_info->clip_mask);
1606 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1607 exception);
1608 clone_info->stroke_width=0.0;
1609 clone_info->alpha=OpaqueAlpha;
1610 clone_info->clip_path=MagickTrue;
1611 status=RenderMVGContent(clip_mask,clone_info,0,exception);
1612 clone_info=DestroyDrawInfo(clone_info);
1613 separate_mask=SeparateImage(clip_mask,AlphaChannel,exception);
1614 if (separate_mask == (Image *) NULL)
1615 status=MagickFalse;
1616 else
1617 {
1618 clip_mask=DestroyImage(clip_mask);
1619 clip_mask=separate_mask;
1620 status&=(MagickStatusType) NegateImage(clip_mask,MagickFalse,exception);
1621 }
1622 if (status == MagickFalse)
1623 clip_mask=DestroyImage(clip_mask);
1624 if (draw_info->debug != MagickFalse)
1625 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end clip-path");
1626 return(clip_mask);
1627}
1628␌
1629/*
1630%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1631% %
1632% %
1633% %
1634% D r a w C o m p o s i t e M a s k %
1635% %
1636% %
1637% %
1638%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1639%
1640% DrawCompositeMask() draws the mask path and returns it as an image mask.
1641%
1642% The format of the DrawCompositeMask method is:
1643%
1644% Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1645% const char *id,const char *mask_path,ExceptionInfo *exception)
1646%
1647% A description of each parameter follows:
1648%
1649% o image: the image.
1650%
1651% o draw_info: the draw info.
1652%
1653% o id: the mask path id.
1654%
1655% o mask_path: the mask path.
1656%
1657% o exception: return any errors or warnings in this structure.
1658%
1659*/
1660static Image *DrawCompositeMask(Image *image,const DrawInfo *draw_info,
1661 const char *id,const char *mask_path,ExceptionInfo *exception)
1662{
1663 Image
1664 *composite_mask,
1665 *separate_mask;
1666
1667 DrawInfo
1668 *clone_info;
1669
1670 MagickStatusType
1671 status;
1672
1673 /*
1674 Draw a mask path.
1675 */
1676 assert(image != (Image *) NULL);
1677 assert(image->signature == MagickCoreSignature);
1678 assert(draw_info != (const DrawInfo *) NULL);
1679 if (IsEventLogging() != MagickFalse)
1680 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1681 composite_mask=AcquireImage((const ImageInfo *) NULL,exception);
1682 status=SetImageExtent(composite_mask,image->columns,image->rows,exception);
1683 if (status == MagickFalse)
1684 return(DestroyImage(composite_mask));
1685 status=SetImageMask(composite_mask,CompositePixelMask,(Image *) NULL,
1686 exception);
1687 status=QueryColorCompliance("#0000",AllCompliance,
1688 &composite_mask->background_color,exception);
1689 composite_mask->background_color.alpha=(MagickRealType) TransparentAlpha;
1690 composite_mask->background_color.alpha_trait=BlendPixelTrait;
1691 (void) SetImageBackgroundColor(composite_mask,exception);
1692 if (draw_info->debug != MagickFalse)
1693 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"\nbegin mask-path %s",
1694 id);
1695 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1696 (void) CloneString(&clone_info->primitive,mask_path);
1697 status=QueryColorCompliance("#ffffff",AllCompliance,&clone_info->fill,
1698 exception);
1699 status=QueryColorCompliance("#00000000",AllCompliance,&clone_info->stroke,
1700 exception);
1701 clone_info->stroke_width=0.0;
1702 clone_info->alpha=OpaqueAlpha;
1703 status=RenderMVGContent(composite_mask,clone_info,0,exception);
1704 clone_info=DestroyDrawInfo(clone_info);
1705 separate_mask=SeparateImage(composite_mask,AlphaChannel,exception);
1706 if (separate_mask != (Image *) NULL)
1707 {
1708 composite_mask=DestroyImage(composite_mask);
1709 composite_mask=separate_mask;
1710 status=NegateImage(composite_mask,MagickFalse,exception);
1711 if (status == MagickFalse)
1712 composite_mask=DestroyImage(composite_mask);
1713 }
1714 if (status == MagickFalse)
1715 composite_mask=DestroyImage(composite_mask);
1716 if (draw_info->debug != MagickFalse)
1717 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end mask-path");
1718 return(composite_mask);
1719}
1720␌
1721/*
1722%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1723% %
1724% %
1725% %
1726+ D r a w D a s h P o l y g o n %
1727% %
1728% %
1729% %
1730%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1731%
1732% DrawDashPolygon() draws a dashed polygon (line, rectangle, ellipse) on the
1733% image while respecting the dash offset and dash pattern attributes.
1734%
1735% The format of the DrawDashPolygon method is:
1736%
1737% MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1738% const PrimitiveInfo *primitive_info,Image *image,
1739% ExceptionInfo *exception)
1740%
1741% A description of each parameter follows:
1742%
1743% o draw_info: the draw info.
1744%
1745% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
1746%
1747% o image: the image.
1748%
1749% o exception: return any errors or warnings in this structure.
1750%
1751*/
1752static MagickBooleanType DrawDashPolygon(const DrawInfo *draw_info,
1753 const PrimitiveInfo *primitive_info,Image *image,ExceptionInfo *exception)
1754{
1755 double
1756 dx,
1757 dy,
1758 length,
1759 maximum_length,
1760 offset,
1761 scale,
1762 total_length;
1763
1764 DrawInfo
1765 *clone_info;
1766
1767 MagickStatusType
1768 status;
1769
1770 PrimitiveInfo
1771 *dash_polygon;
1772
1773 ssize_t
1774 i;
1775
1776 size_t
1777 number_vertices;
1778
1779 ssize_t
1780 j,
1781 n;
1782
1783 assert(draw_info != (const DrawInfo *) NULL);
1784 if (draw_info->debug != MagickFalse)
1785 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-dash");
1786 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++) ;
1787 number_vertices=(size_t) i;
1788 dash_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
1789 (2UL*number_vertices+32UL),sizeof(*dash_polygon));
1790 if (dash_polygon == (PrimitiveInfo *) NULL)
1791 {
1792 (void) ThrowMagickException(exception,GetMagickModule(),
1793 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
1794 return(MagickFalse);
1795 }
1796 (void) memset(dash_polygon,0,(2UL*number_vertices+32UL)*
1797 sizeof(*dash_polygon));
1798 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
1799 clone_info->miterlimit=0;
1800 dash_polygon[0]=primitive_info[0];
1801 dash_polygon[0].closed_subpath=MagickFalse;
1802 scale=ExpandAffine(&draw_info->affine);
1803 length=scale*draw_info->dash_pattern[0];
1804 offset=fabs(draw_info->dash_offset) >= MagickEpsilon ?
1805 scale*draw_info->dash_offset : 0.0;
1806 j=1;
1807 for (n=0; offset > 0.0; j=0)
1808 {
1809 if (draw_info->dash_pattern[n] <= 0.0)
1810 break;
1811 length=scale*(draw_info->dash_pattern[n]+(n == 0 ? -0.5 : 0.5));
1812 if (offset > length)
1813 {
1814 offset-=length;
1815 n++;
1816 length=scale*draw_info->dash_pattern[n];
1817 continue;
1818 }
1819 if (offset < length)
1820 {
1821 length-=offset;
1822 offset=0.0;
1823 break;
1824 }
1825 offset=0.0;
1826 n++;
1827 }
1828 status=MagickTrue;
1829 maximum_length=0.0;
1830 total_length=0.0;
1831 for (i=1; (i < (ssize_t) number_vertices) && (length >= 0.0); i++)
1832 {
1833 dx=primitive_info[i].point.x-primitive_info[i-1].point.x;
1834 dy=primitive_info[i].point.y-primitive_info[i-1].point.y;
1835 maximum_length=hypot(dx,dy);
1836 if (maximum_length > (double) (MaxBezierCoordinates >> 2))
1837 continue;
1838 if (fabs(length) < MagickEpsilon)
1839 {
1840 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1841 n++;
1842 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1843 n=0;
1844 length=scale*draw_info->dash_pattern[n];
1845 }
1846 for (total_length=0.0; (length >= 0.0) && (maximum_length >= (total_length+length)); )
1847 {
1848 total_length+=length;
1849 if ((n & 0x01) != 0)
1850 {
1851 dash_polygon[0]=primitive_info[0];
1852 dash_polygon[0].closed_subpath=MagickFalse;
1853 dash_polygon[0].point.x=(double) (primitive_info[i-1].point.x+dx*
1854 total_length*MagickSafeReciprocal(maximum_length));
1855 dash_polygon[0].point.y=(double) (primitive_info[i-1].point.y+dy*
1856 total_length*MagickSafeReciprocal(maximum_length));
1857 j=1;
1858 }
1859 else
1860 {
1861 if ((j+1) > (ssize_t) number_vertices)
1862 break;
1863 dash_polygon[j]=primitive_info[i-1];
1864 dash_polygon[j].closed_subpath=MagickFalse;
1865 dash_polygon[j].point.x=(double) (primitive_info[i-1].point.x+dx*
1866 total_length*MagickSafeReciprocal(maximum_length));
1867 dash_polygon[j].point.y=(double) (primitive_info[i-1].point.y+dy*
1868 total_length*MagickSafeReciprocal(maximum_length));
1869 dash_polygon[j].coordinates=1;
1870 j++;
1871 dash_polygon[0].coordinates=(size_t) j;
1872 dash_polygon[j].primitive=UndefinedPrimitive;
1873 status&=(MagickStatusType) DrawStrokePolygon(image,clone_info,
1874 dash_polygon,exception);
1875 if (status == MagickFalse)
1876 break;
1877 }
1878 if (fabs(draw_info->dash_pattern[n]) >= MagickEpsilon)
1879 n++;
1880 if (fabs(draw_info->dash_pattern[n]) < MagickEpsilon)
1881 n=0;
1882 length=scale*draw_info->dash_pattern[n];
1883 }
1884 length-=(maximum_length-total_length);
1885 if ((n & 0x01) != 0)
1886 continue;
1887 dash_polygon[j]=primitive_info[i];
1888 dash_polygon[j].coordinates=1;
1889 j++;
1890 }
1891 if ((status != MagickFalse) && (total_length < maximum_length) &&
1892 ((n & 0x01) == 0) && (j > 1))
1893 {
1894 dash_polygon[j]=primitive_info[i-1];
1895 dash_polygon[j].closed_subpath=MagickFalse;
1896 dash_polygon[j].point.x+=MagickEpsilon;
1897 dash_polygon[j].point.y+=MagickEpsilon;
1898 dash_polygon[j].coordinates=1;
1899 j++;
1900 dash_polygon[0].coordinates=(size_t) j;
1901 dash_polygon[j].primitive=UndefinedPrimitive;
1902 status&=(MagickStatusType) DrawStrokePolygon(image,clone_info,
1903 dash_polygon,exception);
1904 }
1905 dash_polygon=(PrimitiveInfo *) RelinquishMagickMemory(dash_polygon);
1906 clone_info=DestroyDrawInfo(clone_info);
1907 if (draw_info->debug != MagickFalse)
1908 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-dash");
1909 return(status != 0 ? MagickTrue : MagickFalse);
1910}
1911␌
1912/*
1913%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1914% %
1915% %
1916% %
1917% D r a w G r a d i e n t I m a g e %
1918% %
1919% %
1920% %
1921%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1922%
1923% DrawGradientImage() draws a linear gradient on the image.
1924%
1925% The format of the DrawGradientImage method is:
1926%
1927% MagickBooleanType DrawGradientImage(Image *image,
1928% const DrawInfo *draw_info,ExceptionInfo *exception)
1929%
1930% A description of each parameter follows:
1931%
1932% o image: the image.
1933%
1934% o draw_info: the draw info.
1935%
1936% o exception: return any errors or warnings in this structure.
1937%
1938*/
1939
1940static inline double GetStopColorOffset(const GradientInfo *gradient,
1941 const ssize_t x,const ssize_t y)
1942{
1943 switch (gradient->type)
1944 {
1945 case UndefinedGradient:
1946 case LinearGradient:
1947 {
1948 double
1949 gamma,
1950 length,
1951 offset,
1952 scale;
1953
1954 PointInfo
1955 p,
1956 q;
1957
1958 const SegmentInfo
1959 *gradient_vector;
1960
1961 gradient_vector=(&gradient->gradient_vector);
1962 p.x=gradient_vector->x2-gradient_vector->x1;
1963 p.y=gradient_vector->y2-gradient_vector->y1;
1964 q.x=(double) x-gradient_vector->x1;
1965 q.y=(double) y-gradient_vector->y1;
1966 length=sqrt(q.x*q.x+q.y*q.y);
1967 gamma=sqrt(p.x*p.x+p.y*p.y)*length;
1968 gamma=MagickSafeReciprocal(gamma);
1969 scale=p.x*q.x+p.y*q.y;
1970 offset=gamma*scale*length;
1971 return(offset);
1972 }
1973 case RadialGradient:
1974 {
1975 PointInfo
1976 v;
1977
1978 if (gradient->spread == RepeatSpread)
1979 {
1980 v.x=(double) x-gradient->center.x;
1981 v.y=(double) y-gradient->center.y;
1982 return(sqrt(v.x*v.x+v.y*v.y));
1983 }
1984 v.x=(double) (((x-gradient->center.x)*cos(DegreesToRadians(
1985 gradient->angle)))+((y-gradient->center.y)*sin(DegreesToRadians(
1986 gradient->angle))))*MagickSafeReciprocal(gradient->radii.x);
1987 v.y=(double) (((x-gradient->center.x)*sin(DegreesToRadians(
1988 gradient->angle)))-((y-gradient->center.y)*cos(DegreesToRadians(
1989 gradient->angle))))*MagickSafeReciprocal(gradient->radii.y);
1990 return(sqrt(v.x*v.x+v.y*v.y));
1991 }
1992 }
1993 return(0.0);
1994}
1995
1996static int StopInfoCompare(const void *x,const void *y)
1997{
1998 StopInfo
1999 *stop_1,
2000 *stop_2;
2001
2002 stop_1=(StopInfo *) x;
2003 stop_2=(StopInfo *) y;
2004 if (stop_1->offset > stop_2->offset)
2005 return(1);
2006 if (fabs(stop_1->offset-stop_2->offset) <= MagickEpsilon)
2007 return(0);
2008 return(-1);
2009}
2010
2011MagickExport MagickBooleanType DrawGradientImage(Image *image,
2012 const DrawInfo *draw_info,ExceptionInfo *exception)
2013{
2014 CacheView
2015 *image_view;
2016
2017 const GradientInfo
2018 *gradient;
2019
2020 const SegmentInfo
2021 *gradient_vector;
2022
2023 double
2024 length;
2025
2026 MagickBooleanType
2027 status;
2028
2029 PixelInfo
2030 zero;
2031
2032 PointInfo
2033 point;
2034
2035 RectangleInfo
2036 bounding_box;
2037
2038 size_t
2039 height;
2040
2041 ssize_t
2042 y;
2043
2044 /*
2045 Draw linear or radial gradient on image.
2046 */
2047 assert(image != (Image *) NULL);
2048 assert(image->signature == MagickCoreSignature);
2049 assert(draw_info != (const DrawInfo *) NULL);
2050 if (IsEventLogging() != MagickFalse)
2051 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2052 gradient=(&draw_info->gradient);
2053 qsort(gradient->stops,gradient->number_stops,sizeof(StopInfo),
2054 StopInfoCompare);
2055 gradient_vector=(&gradient->gradient_vector);
2056 point.x=gradient_vector->x2-gradient_vector->x1;
2057 point.y=gradient_vector->y2-gradient_vector->y1;
2058 length=sqrt(point.x*point.x+point.y*point.y);
2059 bounding_box=gradient->bounding_box;
2060 status=MagickTrue;
2061 GetPixelInfo(image,&zero);
2062 image_view=AcquireAuthenticCacheView(image,exception);
2063 height=(size_t) (bounding_box.y+(ssize_t) bounding_box.height);
2064#if defined(MAGICKCORE_OPENMP_SUPPORT)
2065 #pragma omp parallel for schedule(static) shared(status) \
2066 magick_number_threads(image,image,height,1)
2067#endif
2068 for (y=bounding_box.y; y < (ssize_t) height; y++)
2069 {
2070 double
2071 alpha,
2072 offset;
2073
2074 PixelInfo
2075 composite,
2076 pixel;
2077
2078 Quantum
2079 *magick_restrict q;
2080
2081 size_t
2082 width;
2083
2084 ssize_t
2085 i,
2086 j,
2087 x;
2088
2089 if (status == MagickFalse)
2090 continue;
2091 q=GetCacheViewAuthenticPixels(image_view,bounding_box.x,y,(size_t)
2092 bounding_box.width,1,exception);
2093 if (q == (Quantum *) NULL)
2094 {
2095 status=MagickFalse;
2096 continue;
2097 }
2098 pixel=zero;
2099 composite=zero;
2100 offset=GetStopColorOffset(gradient,0,y);
2101 if (gradient->type != RadialGradient)
2102 offset*=MagickSafeReciprocal(length);
2103 width=(size_t) (bounding_box.x+(ssize_t) bounding_box.width);
2104 for (x=bounding_box.x; x < (ssize_t) width; x++)
2105 {
2106 GetPixelInfoPixel(image,q,&pixel);
2107 switch (gradient->spread)
2108 {
2109 case UndefinedSpread:
2110 case PadSpread:
2111 {
2112 if ((x != CastDoubleToSsizeT(ceil(gradient_vector->x1-0.5))) ||
2113 (y != CastDoubleToSsizeT(ceil(gradient_vector->y1-0.5))))
2114 {
2115 offset=GetStopColorOffset(gradient,x,y);
2116 if (gradient->type != RadialGradient)
2117 offset*=MagickSafeReciprocal(length);
2118 }
2119 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2120 if (offset < gradient->stops[i].offset)
2121 break;
2122 if ((offset < 0.0) || (i == 0))
2123 composite=gradient->stops[0].color;
2124 else
2125 if ((offset > 1.0) || (i == (ssize_t) gradient->number_stops))
2126 composite=gradient->stops[gradient->number_stops-1].color;
2127 else
2128 {
2129 j=i;
2130 i--;
2131 alpha=(offset-gradient->stops[i].offset)/
2132 (gradient->stops[j].offset-gradient->stops[i].offset);
2133 CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2134 &gradient->stops[j].color,alpha,&composite);
2135 }
2136 break;
2137 }
2138 case ReflectSpread:
2139 {
2140 if ((x != CastDoubleToSsizeT(ceil(gradient_vector->x1-0.5))) ||
2141 (y != CastDoubleToSsizeT(ceil(gradient_vector->y1-0.5))))
2142 {
2143 offset=GetStopColorOffset(gradient,x,y);
2144 if (gradient->type != RadialGradient)
2145 offset*=MagickSafeReciprocal(length);
2146 }
2147 if (offset < 0.0)
2148 offset=(-offset);
2149 if ((ssize_t) fmod(offset,2.0) == 0)
2150 offset=fmod(offset,1.0);
2151 else
2152 offset=1.0-fmod(offset,1.0);
2153 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2154 if (offset < gradient->stops[i].offset)
2155 break;
2156 if (i == 0)
2157 composite=gradient->stops[0].color;
2158 else
2159 if (i == (ssize_t) gradient->number_stops)
2160 composite=gradient->stops[gradient->number_stops-1].color;
2161 else
2162 {
2163 j=i;
2164 i--;
2165 alpha=(offset-gradient->stops[i].offset)/
2166 (gradient->stops[j].offset-gradient->stops[i].offset);
2167 CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2168 &gradient->stops[j].color,alpha,&composite);
2169 }
2170 break;
2171 }
2172 case RepeatSpread:
2173 {
2174 double
2175 repeat;
2176
2177 MagickBooleanType
2178 antialias;
2179
2180 antialias=MagickFalse;
2181 repeat=0.0;
2182 if ((x != CastDoubleToSsizeT(ceil(gradient_vector->x1-0.5))) ||
2183 (y != CastDoubleToSsizeT(ceil(gradient_vector->y1-0.5))))
2184 {
2185 offset=GetStopColorOffset(gradient,x,y);
2186 if (gradient->type == LinearGradient)
2187 {
2188 repeat=fmod(offset,length);
2189 if (repeat < 0.0)
2190 repeat=length-fmod(-repeat,length);
2191 else
2192 repeat=fmod(offset,length);
2193 antialias=(repeat < length) && ((repeat+1.0) > length) ?
2194 MagickTrue : MagickFalse;
2195 offset=MagickSafeReciprocal(length)*repeat;
2196 }
2197 else
2198 {
2199 repeat=fmod(offset,gradient->radius);
2200 if (repeat < 0.0)
2201 repeat=gradient->radius-fmod(-repeat,gradient->radius);
2202 else
2203 repeat=fmod(offset,gradient->radius);
2204 antialias=repeat+1.0 > gradient->radius ? MagickTrue :
2205 MagickFalse;
2206 offset=repeat*MagickSafeReciprocal(gradient->radius);
2207 }
2208 }
2209 for (i=0; i < (ssize_t) gradient->number_stops; i++)
2210 if (offset < gradient->stops[i].offset)
2211 break;
2212 if (i == 0)
2213 composite=gradient->stops[0].color;
2214 else
2215 if (i == (ssize_t) gradient->number_stops)
2216 composite=gradient->stops[gradient->number_stops-1].color;
2217 else
2218 {
2219 j=i;
2220 i--;
2221 alpha=(offset-gradient->stops[i].offset)/
2222 (gradient->stops[j].offset-gradient->stops[i].offset);
2223 if (antialias != MagickFalse)
2224 {
2225 if (gradient->type == LinearGradient)
2226 alpha=length-repeat;
2227 else
2228 alpha=gradient->radius-repeat;
2229 i=0;
2230 j=(ssize_t) gradient->number_stops-1L;
2231 }
2232 CompositePixelInfoBlend(&gradient->stops[i].color,1.0-alpha,
2233 &gradient->stops[j].color,alpha,&composite);
2234 }
2235 break;
2236 }
2237 }
2238 CompositePixelInfoOver(&composite,composite.alpha,&pixel,pixel.alpha,
2239 &pixel);
2240 SetPixelViaPixelInfo(image,&pixel,q);
2241 q+=(ptrdiff_t) GetPixelChannels(image);
2242 }
2243 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2244 status=MagickFalse;
2245 }
2246 image_view=DestroyCacheView(image_view);
2247 return(status);
2248}
2249␌
2250/*
2251%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2252% %
2253% %
2254% %
2255% D r a w I m a g e %
2256% %
2257% %
2258% %
2259%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2260%
2261% DrawImage() draws a graphic primitive on your image. The primitive
2262% may be represented as a string or filename. Precede the filename with an
2263% "at" sign (@) and the contents of the file are drawn on the image. You
2264% can affect how text is drawn by setting one or more members of the draw
2265% info structure.
2266%
2267% The format of the DrawImage method is:
2268%
2269% MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
2270% ExceptionInfo *exception)
2271%
2272% A description of each parameter follows:
2273%
2274% o image: the image.
2275%
2276% o draw_info: the draw info.
2277%
2278% o exception: return any errors or warnings in this structure.
2279%
2280*/
2281
2282static MagickBooleanType CheckPrimitiveExtent(MVGInfo *mvg_info,
2283 const double pad)
2284{
2285 char
2286 **text = (char **) NULL;
2287
2288 double
2289 extent;
2290
2291 size_t
2292 quantum;
2293
2294 ssize_t
2295 i;
2296
2297 /*
2298 Check if there is enough storage for drawing primitives.
2299 */
2300 quantum=sizeof(**mvg_info->primitive_info);
2301 extent=(double) mvg_info->offset+pad+(PrimitiveExtentPad+1)*(double) quantum;
2302 if (extent <= (double) *mvg_info->extent)
2303 return(MagickTrue);
2304 if ((extent >= (double) GetMaxMemoryRequest()) || (IsNaN(extent) != 0))
2305 return(MagickFalse);
2306 if (mvg_info->offset > 0)
2307 {
2308 text=(char **) AcquireQuantumMemory((size_t) mvg_info->offset,
2309 sizeof(*text));
2310 if (text == (char **) NULL)
2311 return(MagickFalse);
2312 for (i=0; i < mvg_info->offset; i++)
2313 text[i]=(*mvg_info->primitive_info)[i].text;
2314 }
2315 *mvg_info->primitive_info=(PrimitiveInfo *) ResizeQuantumMemory(
2316 *mvg_info->primitive_info,(size_t) (extent+1),quantum);
2317 if (*mvg_info->primitive_info != (PrimitiveInfo *) NULL)
2318 {
2319 if (text != (char **) NULL)
2320 text=(char **) RelinquishMagickMemory(text);
2321 *mvg_info->extent=(size_t) extent;
2322 for (i=mvg_info->offset+1; i <= (ssize_t) extent; i++)
2323 {
2324 (*mvg_info->primitive_info)[i].primitive=UndefinedPrimitive;
2325 (*mvg_info->primitive_info)[i].text=(char *) NULL;
2326 }
2327 return(MagickTrue);
2328 }
2329 /*
2330 Reallocation failed, allocate a primitive to facilitate unwinding.
2331 */
2332 if (text != (char **) NULL)
2333 {
2334 for (i=0; i < mvg_info->offset; i++)
2335 if (text[i] != (char *) NULL)
2336 text[i]=DestroyString(text[i]);
2337 text=(char **) RelinquishMagickMemory(text);
2338 }
2339 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
2340 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
2341 *mvg_info->primitive_info=(PrimitiveInfo *) AcquireCriticalMemory((size_t)
2342 (PrimitiveExtentPad+1)*quantum);
2343 (void) memset(*mvg_info->primitive_info,0,(size_t) ((PrimitiveExtentPad+1)*
2344 quantum));
2345 *mvg_info->extent=1;
2346 mvg_info->offset=0;
2347 return(MagickFalse);
2348}
2349
2350static inline double GetDrawValue(const char *magick_restrict string,
2351 char **magick_restrict sentinel)
2352{
2353 char
2354 **magick_restrict q;
2355
2356 double
2357 value;
2358
2359 q=sentinel;
2360 value=InterpretLocaleValue(string,q);
2361 sentinel=q;
2362 return(value);
2363}
2364
2365static int MVGMacroCompare(const void *target,const void *source)
2366{
2367 const char
2368 *p,
2369 *q;
2370
2371 p=(const char *) target;
2372 q=(const char *) source;
2373 return(strcmp(p,q));
2374}
2375
2376static SplayTreeInfo *GetMVGMacros(const char *primitive)
2377{
2378 char
2379 *macro,
2380 *token;
2381
2382 const char
2383 *q;
2384
2385 size_t
2386 extent;
2387
2388 SplayTreeInfo
2389 *macros;
2390
2391 /*
2392 Scan graphic primitives for definitions and classes.
2393 */
2394 if (primitive == (const char *) NULL)
2395 return((SplayTreeInfo *) NULL);
2396 macros=NewSplayTree(MVGMacroCompare,RelinquishMagickMemory,
2397 RelinquishMagickMemory);
2398 macro=AcquireString(primitive);
2399 token=AcquireString(primitive);
2400 extent=strlen(token)+MagickPathExtent;
2401 for (q=primitive; *q != '\0'; )
2402 {
2403 if (GetNextToken(q,&q,extent,token) < 1)
2404 break;
2405 if (*token == '\0')
2406 break;
2407 if (LocaleCompare("push",token) == 0)
2408 {
2409 const char
2410 *end,
2411 *start;
2412
2413 (void) GetNextToken(q,&q,extent,token);
2414 if (*q == '"')
2415 {
2416 char
2417 name[MagickPathExtent];
2418
2419 const char
2420 *p;
2421
2422 ssize_t
2423 n;
2424
2425 /*
2426 Named macro (e.g. push graphic-context "wheel").
2427 */
2428 (void) GetNextToken(q,&q,extent,token);
2429 start=q;
2430 end=q;
2431 (void) CopyMagickString(name,token,MagickPathExtent);
2432 n=1;
2433 for (p=q; *p != '\0'; )
2434 {
2435 if (GetNextToken(p,&p,extent,token) < 1)
2436 break;
2437 if (*token == '\0')
2438 break;
2439 if (LocaleCompare(token,"pop") == 0)
2440 {
2441 end=p-strlen(token)-1;
2442 n--;
2443 }
2444 if (LocaleCompare(token,"push") == 0)
2445 n++;
2446 if ((n == 0) && (end >= start))
2447 {
2448 size_t
2449 length=(size_t) (end-start);
2450
2451 /*
2452 Extract macro.
2453 */
2454 (void) GetNextToken(p,&p,extent,token);
2455 if (length > 0)
2456 {
2457 (void) CopyMagickString(macro,start,length);
2458 (void) AddValueToSplayTree(macros,ConstantString(name),
2459 ConstantString(macro));
2460 }
2461 break;
2462 }
2463 }
2464 }
2465 }
2466 }
2467 token=DestroyString(token);
2468 macro=DestroyString(macro);
2469 return(macros);
2470}
2471
2472static inline MagickBooleanType IsPoint(const char *point)
2473{
2474 char
2475 *p;
2476
2477 double
2478 value;
2479
2480 value=GetDrawValue(point,&p);
2481 return((fabs(value) < MagickEpsilon) && (p == point) ? MagickFalse :
2482 MagickTrue);
2483}
2484
2485static inline MagickBooleanType TracePoint(PrimitiveInfo *primitive_info,
2486 const PointInfo point)
2487{
2488 primitive_info->coordinates=1;
2489 primitive_info->closed_subpath=MagickFalse;
2490 primitive_info->point=point;
2491 return(MagickTrue);
2492}
2493
2494static MagickBooleanType RenderMVGContent(Image *image,
2495 const DrawInfo *draw_info,const size_t depth,ExceptionInfo *exception)
2496{
2497#define RenderImageTag "Render/Image"
2498
2499 AffineMatrix
2500 affine,
2501 current;
2502
2503 char
2504 keyword[MagickPathExtent],
2505 geometry[MagickPathExtent],
2506 *next_token,
2507 pattern[MagickPathExtent],
2508 *primitive,
2509 *token;
2510
2511 const char
2512 *p,
2513 *q;
2514
2515 double
2516 angle,
2517 coordinates,
2518 cursor,
2519 factor,
2520 primitive_extent;
2521
2522 DrawInfo
2523 *clone_info,
2524 **graphic_context;
2525
2526 MagickBooleanType
2527 proceed;
2528
2529 MagickStatusType
2530 status;
2531
2532 MVGInfo
2533 mvg_info;
2534
2535 PointInfo
2536 point;
2537
2538 PrimitiveInfo
2539 *primitive_info;
2540
2541 PrimitiveType
2542 primitive_type;
2543
2544 SegmentInfo
2545 bounds;
2546
2547 size_t
2548 extent,
2549 number_points,
2550 number_stops;
2551
2552 SplayTreeInfo
2553 *macros;
2554
2555 ssize_t
2556 defsDepth,
2557 i,
2558 j,
2559 k,
2560 n,
2561 symbolDepth,
2562 x;
2563
2564 StopInfo
2565 *stops;
2566
2567 TypeMetric
2568 metrics;
2569
2570 assert(image != (Image *) NULL);
2571 assert(image->signature == MagickCoreSignature);
2572 assert(draw_info != (DrawInfo *) NULL);
2573 assert(draw_info->signature == MagickCoreSignature);
2574 if (IsEventLogging() != MagickFalse)
2575 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2576 if (depth > MagickMaxRecursionDepth)
2577 ThrowBinaryException(DrawError,"VectorGraphicsNestedTooDeeply",
2578 image->filename);
2579 if ((draw_info->primitive == (char *) NULL) ||
2580 (*draw_info->primitive == '\0'))
2581 return(MagickFalse);
2582 if (draw_info->debug != MagickFalse)
2583 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"begin draw-image");
2584 if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2585 return(MagickFalse);
2586 if ((image->alpha_trait & BlendPixelTrait) == 0)
2587 {
2588 status=SetImageAlphaChannel(image,OpaqueAlphaChannel,exception);
2589 if (status == MagickFalse)
2590 return(MagickFalse);
2591 }
2592 if ((*draw_info->primitive == '@') && (strlen(draw_info->primitive) > 1) &&
2593 (*(draw_info->primitive+1) != '-') && (depth == 0))
2594 primitive=FileToString(draw_info->primitive,~0UL,exception);
2595 else
2596 primitive=AcquireString(draw_info->primitive);
2597 if (primitive == (char *) NULL)
2598 return(MagickFalse);
2599 primitive_extent=(double) strlen(primitive);
2600 (void) SetImageArtifact(image,"mvg:vector-graphics",primitive);
2601 n=0;
2602 number_stops=0;
2603 stops=(StopInfo *) NULL;
2604 /*
2605 Allocate primitive info memory.
2606 */
2607 graphic_context=(DrawInfo **) AcquireMagickMemory(sizeof(*graphic_context));
2608 if (graphic_context == (DrawInfo **) NULL)
2609 {
2610 primitive=DestroyString(primitive);
2611 ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
2612 image->filename);
2613 }
2614 number_points=(size_t) PrimitiveExtentPad;
2615 primitive_info=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
2616 (number_points+1),sizeof(*primitive_info));
2617 if (primitive_info == (PrimitiveInfo *) NULL)
2618 {
2619 primitive=DestroyString(primitive);
2620 for ( ; n >= 0; n--)
2621 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
2622 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
2623 ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
2624 image->filename);
2625 }
2626 (void) memset(primitive_info,0,(size_t) (number_points+1)*
2627 sizeof(*primitive_info));
2628 (void) memset(&mvg_info,0,sizeof(mvg_info));
2629 mvg_info.primitive_info=(&primitive_info);
2630 mvg_info.extent=(&number_points);
2631 mvg_info.exception=exception;
2632 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,draw_info);
2633 graphic_context[n]->viewbox=image->page;
2634 if ((image->page.width == 0) || (image->page.height == 0))
2635 {
2636 graphic_context[n]->viewbox.width=image->columns;
2637 graphic_context[n]->viewbox.height=image->rows;
2638 }
2639 token=AcquireString(primitive);
2640 extent=strlen(token)+MagickPathExtent;
2641 defsDepth=0;
2642 symbolDepth=0;
2643 cursor=0.0;
2644 macros=GetMVGMacros(primitive);
2645 status=MagickTrue;
2646 for (q=primitive; *q != '\0'; )
2647 {
2648 /*
2649 Interpret graphic primitive.
2650 */
2651 if (GetNextToken(q,&q,MagickPathExtent,keyword) < 1)
2652 break;
2653 if (*keyword == '\0')
2654 break;
2655 if (*keyword == '#')
2656 {
2657 /*
2658 Comment.
2659 */
2660 while ((*q != '\n') && (*q != '\0'))
2661 q++;
2662 continue;
2663 }
2664 p=q-strlen(keyword)-1;
2665 primitive_type=UndefinedPrimitive;
2666 current=graphic_context[n]->affine;
2667 GetAffineMatrix(&affine);
2668 *token='\0';
2669 switch (*keyword)
2670 {
2671 case ';':
2672 break;
2673 case 'a':
2674 case 'A':
2675 {
2676 if (LocaleCompare("affine",keyword) == 0)
2677 {
2678 (void) GetNextToken(q,&q,extent,token);
2679 affine.sx=GetDrawValue(token,&next_token);
2680 if (token == next_token)
2681 ThrowPointExpectedException(token,exception);
2682 (void) GetNextToken(q,&q,extent,token);
2683 if (*token == ',')
2684 (void) GetNextToken(q,&q,extent,token);
2685 affine.ry=GetDrawValue(token,&next_token);
2686 if (token == next_token)
2687 ThrowPointExpectedException(token,exception);
2688 (void) GetNextToken(q,&q,extent,token);
2689 if (*token == ',')
2690 (void) GetNextToken(q,&q,extent,token);
2691 affine.rx=GetDrawValue(token,&next_token);
2692 if (token == next_token)
2693 ThrowPointExpectedException(token,exception);
2694 (void) GetNextToken(q,&q,extent,token);
2695 if (*token == ',')
2696 (void) GetNextToken(q,&q,extent,token);
2697 affine.sy=GetDrawValue(token,&next_token);
2698 if (token == next_token)
2699 ThrowPointExpectedException(token,exception);
2700 (void) GetNextToken(q,&q,extent,token);
2701 if (*token == ',')
2702 (void) GetNextToken(q,&q,extent,token);
2703 affine.tx=GetDrawValue(token,&next_token);
2704 if (token == next_token)
2705 ThrowPointExpectedException(token,exception);
2706 (void) GetNextToken(q,&q,extent,token);
2707 if (*token == ',')
2708 (void) GetNextToken(q,&q,extent,token);
2709 affine.ty=GetDrawValue(token,&next_token);
2710 if (token == next_token)
2711 ThrowPointExpectedException(token,exception);
2712 break;
2713 }
2714 if (LocaleCompare("alpha",keyword) == 0)
2715 {
2716 primitive_type=AlphaPrimitive;
2717 break;
2718 }
2719 if (LocaleCompare("arc",keyword) == 0)
2720 {
2721 primitive_type=ArcPrimitive;
2722 break;
2723 }
2724 status=MagickFalse;
2725 break;
2726 }
2727 case 'b':
2728 case 'B':
2729 {
2730 if (LocaleCompare("bezier",keyword) == 0)
2731 {
2732 primitive_type=BezierPrimitive;
2733 break;
2734 }
2735 if (LocaleCompare("border-color",keyword) == 0)
2736 {
2737 (void) GetNextToken(q,&q,extent,token);
2738 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
2739 &graphic_context[n]->border_color,exception);
2740 break;
2741 }
2742 status=MagickFalse;
2743 break;
2744 }
2745 case 'c':
2746 case 'C':
2747 {
2748 if (LocaleCompare("class",keyword) == 0)
2749 {
2750 const char
2751 *mvg_class;
2752
2753 (void) GetNextToken(q,&q,extent,token);
2754 if ((*token == '\0') || (*token == ';'))
2755 {
2756 status=MagickFalse;
2757 break;
2758 }
2759 /*
2760 Identify recursion.
2761 */
2762 for (i=0; i <= n; i++)
2763 if (LocaleCompare(token,graphic_context[i]->id) == 0)
2764 break;
2765 if (i <= n)
2766 break;
2767 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2768 if ((graphic_context[n]->render != MagickFalse) &&
2769 (mvg_class != (const char *) NULL) && (p > primitive))
2770 {
2771 char
2772 *elements;
2773
2774 ssize_t
2775 offset;
2776
2777 /*
2778 Inject class elements in stream.
2779 */
2780 (void) CloneString(&graphic_context[n]->id,token);
2781 offset=(ssize_t) (p-primitive);
2782 elements=AcquireString(primitive);
2783 elements[offset]='\0';
2784 (void) ConcatenateString(&elements,mvg_class);
2785 (void) ConcatenateString(&elements,"\n");
2786 (void) ConcatenateString(&elements,q);
2787 primitive=DestroyString(primitive);
2788 primitive=elements;
2789 q=primitive+offset;
2790 }
2791 break;
2792 }
2793 if (LocaleCompare("clip-path",keyword) == 0)
2794 {
2795 const char
2796 *clip_path;
2797
2798 /*
2799 Take a node from within the MVG document, and duplicate it here.
2800 */
2801 (void) GetNextToken(q,&q,extent,token);
2802 if (*token == '\0')
2803 {
2804 status=MagickFalse;
2805 break;
2806 }
2807 (void) CloneString(&graphic_context[n]->clip_mask,token);
2808 clip_path=(const char *) GetValueFromSplayTree(macros,token);
2809 if (clip_path != (const char *) NULL)
2810 {
2811 if (graphic_context[n]->clipping_mask != (Image *) NULL)
2812 graphic_context[n]->clipping_mask=
2813 DestroyImage(graphic_context[n]->clipping_mask);
2814 graphic_context[n]->clipping_mask=DrawClippingMask(image,
2815 graphic_context[n],token,clip_path,exception);
2816 if (graphic_context[n]->compliance != SVGCompliance)
2817 {
2818 clip_path=(const char *) GetValueFromSplayTree(macros,
2819 graphic_context[n]->clip_mask);
2820 if (clip_path != (const char *) NULL)
2821 (void) SetImageArtifact(image,
2822 graphic_context[n]->clip_mask,clip_path);
2823 status&=(MagickStatusType) DrawClipPath(image,
2824 graphic_context[n],graphic_context[n]->clip_mask,
2825 exception);
2826 }
2827 }
2828 break;
2829 }
2830 if (LocaleCompare("clip-rule",keyword) == 0)
2831 {
2832 ssize_t
2833 fill_rule;
2834
2835 (void) GetNextToken(q,&q,extent,token);
2836 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
2837 token);
2838 if (fill_rule == -1)
2839 {
2840 status=MagickFalse;
2841 break;
2842 }
2843 graphic_context[n]->fill_rule=(FillRule) fill_rule;
2844 break;
2845 }
2846 if (LocaleCompare("clip-units",keyword) == 0)
2847 {
2848 ssize_t
2849 clip_units;
2850
2851 (void) GetNextToken(q,&q,extent,token);
2852 clip_units=ParseCommandOption(MagickClipPathOptions,MagickFalse,
2853 token);
2854 if (clip_units == -1)
2855 {
2856 status=MagickFalse;
2857 break;
2858 }
2859 graphic_context[n]->clip_units=(ClipPathUnits) clip_units;
2860 if (clip_units == ObjectBoundingBox)
2861 {
2862 GetAffineMatrix(&current);
2863 affine.sx=draw_info->bounds.x2;
2864 affine.sy=draw_info->bounds.y2;
2865 affine.tx=draw_info->bounds.x1;
2866 affine.ty=draw_info->bounds.y1;
2867 break;
2868 }
2869 break;
2870 }
2871 if (LocaleCompare("circle",keyword) == 0)
2872 {
2873 primitive_type=CirclePrimitive;
2874 break;
2875 }
2876 if (LocaleCompare("color",keyword) == 0)
2877 {
2878 primitive_type=ColorPrimitive;
2879 break;
2880 }
2881 if (LocaleCompare("compliance",keyword) == 0)
2882 {
2883 /*
2884 MVG compliance associates a clipping mask with an image; SVG
2885 compliance associates a clipping mask with a graphics context.
2886 */
2887 (void) GetNextToken(q,&q,extent,token);
2888 graphic_context[n]->compliance=(ComplianceType) ParseCommandOption(
2889 MagickComplianceOptions,MagickFalse,token);
2890 break;
2891 }
2892 if (LocaleCompare("currentColor",keyword) == 0)
2893 {
2894 (void) GetNextToken(q,&q,extent,token);
2895 break;
2896 }
2897 status=MagickFalse;
2898 break;
2899 }
2900 case 'd':
2901 case 'D':
2902 {
2903 if (LocaleCompare("decorate",keyword) == 0)
2904 {
2905 ssize_t
2906 decorate;
2907
2908 (void) GetNextToken(q,&q,extent,token);
2909 decorate=ParseCommandOption(MagickDecorateOptions,MagickFalse,
2910 token);
2911 if (decorate == -1)
2912 {
2913 status=MagickFalse;
2914 break;
2915 }
2916 graphic_context[n]->decorate=(DecorationType) decorate;
2917 break;
2918 }
2919 if (LocaleCompare("density",keyword) == 0)
2920 {
2921 (void) GetNextToken(q,&q,extent,token);
2922 (void) CloneString(&graphic_context[n]->density,token);
2923 break;
2924 }
2925 if (LocaleCompare("direction",keyword) == 0)
2926 {
2927 ssize_t
2928 direction;
2929
2930 (void) GetNextToken(q,&q,extent,token);
2931 direction=ParseCommandOption(MagickDirectionOptions,MagickFalse,
2932 token);
2933 if (direction == -1)
2934 status=MagickFalse;
2935 else
2936 graphic_context[n]->direction=(DirectionType) direction;
2937 break;
2938 }
2939 status=MagickFalse;
2940 break;
2941 }
2942 case 'e':
2943 case 'E':
2944 {
2945 if (LocaleCompare("ellipse",keyword) == 0)
2946 {
2947 primitive_type=EllipsePrimitive;
2948 break;
2949 }
2950 if (LocaleCompare("encoding",keyword) == 0)
2951 {
2952 (void) GetNextToken(q,&q,extent,token);
2953 (void) CloneString(&graphic_context[n]->encoding,token);
2954 break;
2955 }
2956 status=MagickFalse;
2957 break;
2958 }
2959 case 'f':
2960 case 'F':
2961 {
2962 if (LocaleCompare("fill",keyword) == 0)
2963 {
2964 const char
2965 *mvg_class;
2966
2967 (void) GetNextToken(q,&q,extent,token);
2968 if (graphic_context[n]->clip_path != MagickFalse)
2969 break;
2970 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
2971 if (mvg_class != (const char *) NULL)
2972 {
2973 (void) DrawPatternPath(image,draw_info,mvg_class,
2974 &graphic_context[n]->fill_pattern,exception);
2975 break;
2976 }
2977 (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
2978 if (GetImageArtifact(image,pattern) != (const char *) NULL)
2979 {
2980 (void) DrawPatternPath(image,draw_info,token,
2981 &graphic_context[n]->fill_pattern,exception);
2982 break;
2983 }
2984 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
2985 &graphic_context[n]->fill,exception);
2986 if (graphic_context[n]->fill_alpha != (double) OpaqueAlpha)
2987 graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
2988 break;
2989 }
2990 if (LocaleCompare("fill-opacity",keyword) == 0)
2991 {
2992 double
2993 opacity;
2994
2995 (void) GetNextToken(q,&q,extent,token);
2996 if (graphic_context[n]->clip_path != MagickFalse)
2997 break;
2998 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
2999 opacity=MagickMin(MagickMax(factor*
3000 GetDrawValue(token,&next_token),0.0),1.0);
3001 if (token == next_token)
3002 ThrowPointExpectedException(token,exception);
3003 if (graphic_context[n]->compliance == SVGCompliance)
3004 graphic_context[n]->fill_alpha*=opacity;
3005 else
3006 graphic_context[n]->fill_alpha=(double) QuantumRange*opacity;
3007 if (graphic_context[n]->fill.alpha != (double) TransparentAlpha)
3008 graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
3009 else
3010 graphic_context[n]->fill.alpha=(MagickRealType)
3011 ClampToQuantum((double) QuantumRange*opacity);
3012 graphic_context[n]->fill.alpha_trait=BlendPixelTrait;
3013 break;
3014 }
3015 if (LocaleCompare("fill-rule",keyword) == 0)
3016 {
3017 ssize_t
3018 fill_rule;
3019
3020 (void) GetNextToken(q,&q,extent,token);
3021 fill_rule=ParseCommandOption(MagickFillRuleOptions,MagickFalse,
3022 token);
3023 if (fill_rule == -1)
3024 {
3025 status=MagickFalse;
3026 break;
3027 }
3028 graphic_context[n]->fill_rule=(FillRule) fill_rule;
3029 break;
3030 }
3031 if (LocaleCompare("font",keyword) == 0)
3032 {
3033 (void) GetNextToken(q,&q,extent,token);
3034 (void) CloneString(&graphic_context[n]->font,token);
3035 if (LocaleCompare("none",token) == 0)
3036 graphic_context[n]->font=(char *) RelinquishMagickMemory(
3037 graphic_context[n]->font);
3038 break;
3039 }
3040 if (LocaleCompare("font-family",keyword) == 0)
3041 {
3042 (void) GetNextToken(q,&q,extent,token);
3043 (void) CloneString(&graphic_context[n]->family,token);
3044 break;
3045 }
3046 if (LocaleCompare("font-size",keyword) == 0)
3047 {
3048 (void) GetNextToken(q,&q,extent,token);
3049 graphic_context[n]->pointsize=GetDrawValue(token,&next_token);
3050 if (token == next_token)
3051 ThrowPointExpectedException(token,exception);
3052 break;
3053 }
3054 if (LocaleCompare("font-stretch",keyword) == 0)
3055 {
3056 ssize_t
3057 stretch;
3058
3059 (void) GetNextToken(q,&q,extent,token);
3060 stretch=ParseCommandOption(MagickStretchOptions,MagickFalse,token);
3061 if (stretch == -1)
3062 {
3063 status=MagickFalse;
3064 break;
3065 }
3066 graphic_context[n]->stretch=(StretchType) stretch;
3067 break;
3068 }
3069 if (LocaleCompare("font-style",keyword) == 0)
3070 {
3071 ssize_t
3072 style;
3073
3074 (void) GetNextToken(q,&q,extent,token);
3075 style=ParseCommandOption(MagickStyleOptions,MagickFalse,token);
3076 if (style == -1)
3077 {
3078 status=MagickFalse;
3079 break;
3080 }
3081 graphic_context[n]->style=(StyleType) style;
3082 break;
3083 }
3084 if (LocaleCompare("font-weight",keyword) == 0)
3085 {
3086 ssize_t
3087 weight;
3088
3089 (void) GetNextToken(q,&q,extent,token);
3090 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,token);
3091 if (weight == -1)
3092 weight=(ssize_t) StringToUnsignedLong(token);
3093 graphic_context[n]->weight=(size_t) weight;
3094 break;
3095 }
3096 status=MagickFalse;
3097 break;
3098 }
3099 case 'g':
3100 case 'G':
3101 {
3102 if (LocaleCompare("gradient-units",keyword) == 0)
3103 {
3104 (void) GetNextToken(q,&q,extent,token);
3105 break;
3106 }
3107 if (LocaleCompare("gravity",keyword) == 0)
3108 {
3109 ssize_t
3110 gravity;
3111
3112 (void) GetNextToken(q,&q,extent,token);
3113 gravity=ParseCommandOption(MagickGravityOptions,MagickFalse,token);
3114 if (gravity == -1)
3115 {
3116 status=MagickFalse;
3117 break;
3118 }
3119 graphic_context[n]->gravity=(GravityType) gravity;
3120 break;
3121 }
3122 status=MagickFalse;
3123 break;
3124 }
3125 case 'i':
3126 case 'I':
3127 {
3128 if (LocaleCompare("image",keyword) == 0)
3129 {
3130 ssize_t
3131 compose;
3132
3133 primitive_type=ImagePrimitive;
3134 (void) GetNextToken(q,&q,extent,token);
3135 compose=ParseCommandOption(MagickComposeOptions,MagickFalse,token);
3136 if (compose == -1)
3137 {
3138 status=MagickFalse;
3139 break;
3140 }
3141 graphic_context[n]->compose=(CompositeOperator) compose;
3142 break;
3143 }
3144 if (LocaleCompare("interline-spacing",keyword) == 0)
3145 {
3146 (void) GetNextToken(q,&q,extent,token);
3147 graphic_context[n]->interline_spacing=GetDrawValue(token,
3148 &next_token);
3149 if (token == next_token)
3150 ThrowPointExpectedException(token,exception);
3151 break;
3152 }
3153 if (LocaleCompare("interword-spacing",keyword) == 0)
3154 {
3155 (void) GetNextToken(q,&q,extent,token);
3156 graphic_context[n]->interword_spacing=GetDrawValue(token,
3157 &next_token);
3158 if (token == next_token)
3159 ThrowPointExpectedException(token,exception);
3160 break;
3161 }
3162 status=MagickFalse;
3163 break;
3164 }
3165 case 'k':
3166 case 'K':
3167 {
3168 if (LocaleCompare("kerning",keyword) == 0)
3169 {
3170 (void) GetNextToken(q,&q,extent,token);
3171 graphic_context[n]->kerning=GetDrawValue(token,&next_token);
3172 if (token == next_token)
3173 ThrowPointExpectedException(token,exception);
3174 break;
3175 }
3176 status=MagickFalse;
3177 break;
3178 }
3179 case 'l':
3180 case 'L':
3181 {
3182 if (LocaleCompare("letter-spacing",keyword) == 0)
3183 {
3184 (void) GetNextToken(q,&q,extent,token);
3185 if (IsPoint(token) == MagickFalse)
3186 break;
3187 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3188 clone_info->text=AcquireString(" ");
3189 status&=(MagickStatusType) GetTypeMetrics(image,clone_info,&metrics,
3190 exception);
3191 graphic_context[n]->kerning=metrics.width*
3192 GetDrawValue(token,&next_token);
3193 clone_info=DestroyDrawInfo(clone_info);
3194 if (token == next_token)
3195 ThrowPointExpectedException(token,exception);
3196 break;
3197 }
3198 if (LocaleCompare("line",keyword) == 0)
3199 {
3200 primitive_type=LinePrimitive;
3201 break;
3202 }
3203 status=MagickFalse;
3204 break;
3205 }
3206 case 'm':
3207 case 'M':
3208 {
3209 if (LocaleCompare("mask",keyword) == 0)
3210 {
3211 const char
3212 *mask_path;
3213
3214 /*
3215 Take a node from within the MVG document, and duplicate it here.
3216 */
3217 (void) GetNextToken(q,&q,extent,token);
3218 mask_path=(const char *) GetValueFromSplayTree(macros,token);
3219 if (mask_path != (const char *) NULL)
3220 {
3221 if (graphic_context[n]->composite_mask != (Image *) NULL)
3222 graphic_context[n]->composite_mask=
3223 DestroyImage(graphic_context[n]->composite_mask);
3224 graphic_context[n]->composite_mask=DrawCompositeMask(image,
3225 graphic_context[n],token,mask_path,exception);
3226 if (graphic_context[n]->compliance != SVGCompliance)
3227 status=SetImageMask(image,CompositePixelMask,
3228 graphic_context[n]->composite_mask,exception);
3229 }
3230 break;
3231 }
3232 status=MagickFalse;
3233 break;
3234 }
3235 case 'o':
3236 case 'O':
3237 {
3238 if (LocaleCompare("offset",keyword) == 0)
3239 {
3240 (void) GetNextToken(q,&q,extent,token);
3241 break;
3242 }
3243 if (LocaleCompare("opacity",keyword) == 0)
3244 {
3245 double
3246 opacity;
3247
3248 (void) GetNextToken(q,&q,extent,token);
3249 if (graphic_context[n]->clip_path != MagickFalse)
3250 break;
3251 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3252 opacity=MagickMin(MagickMax(factor*
3253 GetDrawValue(token,&next_token),0.0),1.0);
3254 if (token == next_token)
3255 ThrowPointExpectedException(token,exception);
3256 if (graphic_context[n]->compliance == SVGCompliance)
3257 {
3258 graphic_context[n]->fill_alpha*=opacity;
3259 graphic_context[n]->stroke_alpha*=opacity;
3260 }
3261 else
3262 {
3263 graphic_context[n]->fill_alpha=(double) QuantumRange*opacity;
3264 graphic_context[n]->stroke_alpha=(double) QuantumRange*opacity;
3265 }
3266 if (graphic_context[n]->fill.alpha != (double) TransparentAlpha)
3267 {
3268 graphic_context[n]->fill.alpha=graphic_context[n]->fill_alpha;
3269 graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3270 }
3271 else
3272 {
3273 graphic_context[n]->fill.alpha=(MagickRealType)
3274 ClampToQuantum((double) QuantumRange*opacity);
3275 graphic_context[n]->stroke.alpha=(MagickRealType)
3276 ClampToQuantum((double) QuantumRange*opacity);
3277 }
3278 graphic_context[n]->fill.alpha_trait=BlendPixelTrait;
3279 graphic_context[n]->stroke.alpha_trait=BlendPixelTrait;
3280 break;
3281 }
3282 status=MagickFalse;
3283 break;
3284 }
3285 case 'p':
3286 case 'P':
3287 {
3288 if (LocaleCompare("path",keyword) == 0)
3289 {
3290 primitive_type=PathPrimitive;
3291 break;
3292 }
3293 if (LocaleCompare("point",keyword) == 0)
3294 {
3295 primitive_type=PointPrimitive;
3296 break;
3297 }
3298 if (LocaleCompare("polyline",keyword) == 0)
3299 {
3300 primitive_type=PolylinePrimitive;
3301 break;
3302 }
3303 if (LocaleCompare("polygon",keyword) == 0)
3304 {
3305 primitive_type=PolygonPrimitive;
3306 break;
3307 }
3308 if (LocaleCompare("pop",keyword) == 0)
3309 {
3310 if (GetNextToken(q,&q,extent,token) < 1)
3311 break;
3312 if (LocaleCompare("class",token) == 0)
3313 break;
3314 if (LocaleCompare("clip-path",token) == 0)
3315 break;
3316 if (LocaleCompare("defs",token) == 0)
3317 {
3318 defsDepth--;
3319 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3320 MagickTrue;
3321 break;
3322 }
3323 if (LocaleCompare("gradient",token) == 0)
3324 break;
3325 if (LocaleCompare("graphic-context",token) == 0)
3326 {
3327 if (n <= 0)
3328 {
3329 (void) ThrowMagickException(exception,GetMagickModule(),
3330 DrawError,"UnbalancedGraphicContextPushPop","`%s'",token);
3331 status=MagickFalse;
3332 n=0;
3333 break;
3334 }
3335 if ((graphic_context[n]->clip_mask != (char *) NULL) &&
3336 (graphic_context[n]->compliance != SVGCompliance))
3337 if (LocaleCompare(graphic_context[n]->clip_mask,
3338 graphic_context[n-1]->clip_mask) != 0)
3339 status=SetImageMask(image,WritePixelMask,(Image *) NULL,
3340 exception);
3341 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
3342 n--;
3343 break;
3344 }
3345 if (LocaleCompare("mask",token) == 0)
3346 break;
3347 if (LocaleCompare("pattern",token) == 0)
3348 break;
3349 if (LocaleCompare("symbol",token) == 0)
3350 {
3351 symbolDepth--;
3352 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3353 MagickTrue;
3354 break;
3355 }
3356 status=MagickFalse;
3357 break;
3358 }
3359 if (LocaleCompare("push",keyword) == 0)
3360 {
3361 if (GetNextToken(q,&q,extent,token) < 1)
3362 break;
3363 if (LocaleCompare("class",token) == 0)
3364 {
3365 /*
3366 Class context.
3367 */
3368 for (p=q; *q != '\0'; )
3369 {
3370 if (GetNextToken(q,&q,extent,token) < 1)
3371 break;
3372 if (LocaleCompare(token,"pop") != 0)
3373 continue;
3374 (void) GetNextToken(q,(const char **) NULL,extent,token);
3375 if (LocaleCompare(token,"class") != 0)
3376 continue;
3377 break;
3378 }
3379 (void) GetNextToken(q,&q,extent,token);
3380 break;
3381 }
3382 if (LocaleCompare("clip-path",token) == 0)
3383 {
3384 (void) GetNextToken(q,&q,extent,token);
3385 for (p=q; *q != '\0'; )
3386 {
3387 if (GetNextToken(q,&q,extent,token) < 1)
3388 break;
3389 if (LocaleCompare(token,"pop") != 0)
3390 continue;
3391 (void) GetNextToken(q,(const char **) NULL,extent,token);
3392 if (LocaleCompare(token,"clip-path") != 0)
3393 continue;
3394 break;
3395 }
3396 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p))
3397 {
3398 status=MagickFalse;
3399 break;
3400 }
3401 (void) GetNextToken(q,&q,extent,token);
3402 break;
3403 }
3404 if (LocaleCompare("defs",token) == 0)
3405 {
3406 defsDepth++;
3407 graphic_context[n]->render=defsDepth > 0 ? MagickFalse :
3408 MagickTrue;
3409 break;
3410 }
3411 if (LocaleCompare("gradient",token) == 0)
3412 {
3413 char
3414 key[2*MagickPathExtent],
3415 name[MagickPathExtent],
3416 type[MagickPathExtent];
3417
3418 SegmentInfo
3419 segment;
3420
3421 (void) GetNextToken(q,&q,extent,token);
3422 (void) CopyMagickString(name,token,MagickPathExtent);
3423 (void) GetNextToken(q,&q,extent,token);
3424 (void) CopyMagickString(type,token,MagickPathExtent);
3425 (void) GetNextToken(q,&q,extent,token);
3426 segment.x1=GetDrawValue(token,&next_token);
3427 if (token == next_token)
3428 ThrowPointExpectedException(token,exception);
3429 (void) GetNextToken(q,&q,extent,token);
3430 if (*token == ',')
3431 (void) GetNextToken(q,&q,extent,token);
3432 segment.y1=GetDrawValue(token,&next_token);
3433 if (token == next_token)
3434 ThrowPointExpectedException(token,exception);
3435 (void) GetNextToken(q,&q,extent,token);
3436 if (*token == ',')
3437 (void) GetNextToken(q,&q,extent,token);
3438 segment.x2=GetDrawValue(token,&next_token);
3439 if (token == next_token)
3440 ThrowPointExpectedException(token,exception);
3441 (void) GetNextToken(q,&q,extent,token);
3442 if (*token == ',')
3443 (void) GetNextToken(q,&q,extent,token);
3444 segment.y2=GetDrawValue(token,&next_token);
3445 if (token == next_token)
3446 ThrowPointExpectedException(token,exception);
3447 if (LocaleCompare(type,"radial") == 0)
3448 {
3449 (void) GetNextToken(q,&q,extent,token);
3450 if (*token == ',')
3451 (void) GetNextToken(q,&q,extent,token);
3452 }
3453 for (p=q; *q != '\0'; )
3454 {
3455 if (GetNextToken(q,&q,extent,token) < 1)
3456 break;
3457 if (LocaleCompare(token,"pop") != 0)
3458 continue;
3459 (void) GetNextToken(q,(const char **) NULL,extent,token);
3460 if (LocaleCompare(token,"gradient") != 0)
3461 continue;
3462 break;
3463 }
3464 if ((q == (char *) NULL) || (*q == '\0') ||
3465 (p == (char *) NULL) || ((q-4) < p) ||
3466 ((q-p+4+1) > MagickPathExtent))
3467 {
3468 status=MagickFalse;
3469 break;
3470 }
3471 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3472 bounds.x1=graphic_context[n]->affine.sx*segment.x1+
3473 graphic_context[n]->affine.ry*segment.y1+
3474 graphic_context[n]->affine.tx;
3475 bounds.y1=graphic_context[n]->affine.rx*segment.x1+
3476 graphic_context[n]->affine.sy*segment.y1+
3477 graphic_context[n]->affine.ty;
3478 bounds.x2=graphic_context[n]->affine.sx*segment.x2+
3479 graphic_context[n]->affine.ry*segment.y2+
3480 graphic_context[n]->affine.tx;
3481 bounds.y2=graphic_context[n]->affine.rx*segment.x2+
3482 graphic_context[n]->affine.sy*segment.y2+
3483 graphic_context[n]->affine.ty;
3484 (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3485 (void) SetImageArtifact(image,key,token);
3486 (void) FormatLocaleString(key,MagickPathExtent,"%s-type",name);
3487 (void) SetImageArtifact(image,key,type);
3488 (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3489 name);
3490 (void) FormatLocaleString(geometry,MagickPathExtent,
3491 "%gx%g%+.15g%+.15g",
3492 MagickMax(fabs(bounds.x2-bounds.x1+1.0),1.0),
3493 MagickMax(fabs(bounds.y2-bounds.y1+1.0),1.0),
3494 bounds.x1,bounds.y1);
3495 (void) SetImageArtifact(image,key,geometry);
3496 (void) GetNextToken(q,&q,extent,token);
3497 break;
3498 }
3499 if (LocaleCompare("graphic-context",token) == 0)
3500 {
3501 n++;
3502 graphic_context=(DrawInfo **) ResizeQuantumMemory(
3503 graphic_context,(size_t) (n+1),sizeof(*graphic_context));
3504 if (graphic_context == (DrawInfo **) NULL)
3505 {
3506 (void) ThrowMagickException(exception,GetMagickModule(),
3507 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3508 image->filename);
3509 status=MagickFalse;
3510 break;
3511 }
3512 graphic_context[n]=CloneDrawInfo((ImageInfo *) NULL,
3513 graphic_context[n-1]);
3514 if (*q == '"')
3515 {
3516 (void) GetNextToken(q,&q,extent,token);
3517 (void) CloneString(&graphic_context[n]->id,token);
3518 }
3519 if (n > MagickMaxRecursionDepth)
3520 {
3521 (void) ThrowMagickException(exception,GetMagickModule(),
3522 DrawError,"VectorGraphicsNestedTooDeeply","`%s'",
3523 image->filename);
3524 status=MagickFalse;
3525 }
3526 break;
3527 }
3528 if (LocaleCompare("mask",token) == 0)
3529 {
3530 (void) GetNextToken(q,&q,extent,token);
3531 break;
3532 }
3533 if (LocaleCompare("pattern",token) == 0)
3534 {
3535 char
3536 key[2*MagickPathExtent],
3537 name[MagickPathExtent];
3538
3539 RectangleInfo
3540 region;
3541
3542 (void) GetNextToken(q,&q,extent,token);
3543 (void) CopyMagickString(name,token,MagickPathExtent);
3544 (void) GetNextToken(q,&q,extent,token);
3545 region.x=CastDoubleToSsizeT(ceil(GetDrawValue(token,
3546 &next_token)-0.5));
3547 if (token == next_token)
3548 ThrowPointExpectedException(token,exception);
3549 (void) GetNextToken(q,&q,extent,token);
3550 if (*token == ',')
3551 (void) GetNextToken(q,&q,extent,token);
3552 region.y=CastDoubleToSsizeT(ceil(GetDrawValue(token,
3553 &next_token)-0.5));
3554 if (token == next_token)
3555 ThrowPointExpectedException(token,exception);
3556 (void) GetNextToken(q,&q,extent,token);
3557 if (*token == ',')
3558 (void) GetNextToken(q,&q,extent,token);
3559 region.width=CastDoubleToSizeT(floor(GetDrawValue(token,
3560 &next_token)+0.5));
3561 if (token == next_token)
3562 ThrowPointExpectedException(token,exception);
3563 (void) GetNextToken(q,&q,extent,token);
3564 if (*token == ',')
3565 (void) GetNextToken(q,&q,extent,token);
3566 region.height=CastDoubleToSizeT(GetDrawValue(token,
3567 &next_token)+0.5);
3568 if (token == next_token)
3569 ThrowPointExpectedException(token,exception);
3570 for (p=q; *q != '\0'; )
3571 {
3572 if (GetNextToken(q,&q,extent,token) < 1)
3573 break;
3574 if (LocaleCompare(token,"pop") != 0)
3575 continue;
3576 (void) GetNextToken(q,(const char **) NULL,extent,token);
3577 if (LocaleCompare(token,"pattern") != 0)
3578 continue;
3579 break;
3580 }
3581 if ((q == (char *) NULL) || (p == (char *) NULL) || ((q-4) < p) ||
3582 ((q-p+4+1) > MagickPathExtent))
3583 {
3584 status=MagickFalse;
3585 break;
3586 }
3587 (void) CopyMagickString(token,p,(size_t) (q-p-4+1));
3588 (void) FormatLocaleString(key,MagickPathExtent,"%s",name);
3589 (void) SetImageArtifact(image,key,token);
3590 (void) FormatLocaleString(key,MagickPathExtent,"%s-geometry",
3591 name);
3592 (void) FormatLocaleString(geometry,MagickPathExtent,
3593 "%.20gx%.20g%+.20g%+.20g",(double) region.width,(double)
3594 region.height,(double) region.x,(double) region.y);
3595 (void) SetImageArtifact(image,key,geometry);
3596 (void) GetNextToken(q,&q,extent,token);
3597 break;
3598 }
3599 if (LocaleCompare("symbol",token) == 0)
3600 {
3601 symbolDepth++;
3602 graphic_context[n]->render=symbolDepth > 0 ? MagickFalse :
3603 MagickTrue;
3604 break;
3605 }
3606 status=MagickFalse;
3607 break;
3608 }
3609 status=MagickFalse;
3610 break;
3611 }
3612 case 'r':
3613 case 'R':
3614 {
3615 if (LocaleCompare("rectangle",keyword) == 0)
3616 {
3617 primitive_type=RectanglePrimitive;
3618 break;
3619 }
3620 if (LocaleCompare("rotate",keyword) == 0)
3621 {
3622 (void) GetNextToken(q,&q,extent,token);
3623 angle=GetDrawValue(token,&next_token);
3624 if (token == next_token)
3625 ThrowPointExpectedException(token,exception);
3626 affine.sx=cos(DegreesToRadians(fmod((double) angle,360.0)));
3627 affine.rx=sin(DegreesToRadians(fmod((double) angle,360.0)));
3628 affine.ry=(-sin(DegreesToRadians(fmod((double) angle,360.0))));
3629 affine.sy=cos(DegreesToRadians(fmod((double) angle,360.0)));
3630 break;
3631 }
3632 if (LocaleCompare("roundRectangle",keyword) == 0)
3633 {
3634 primitive_type=RoundRectanglePrimitive;
3635 break;
3636 }
3637 status=MagickFalse;
3638 break;
3639 }
3640 case 's':
3641 case 'S':
3642 {
3643 if (LocaleCompare("scale",keyword) == 0)
3644 {
3645 (void) GetNextToken(q,&q,extent,token);
3646 affine.sx=GetDrawValue(token,&next_token);
3647 if (token == next_token)
3648 ThrowPointExpectedException(token,exception);
3649 (void) GetNextToken(q,&q,extent,token);
3650 if (*token == ',')
3651 (void) GetNextToken(q,&q,extent,token);
3652 affine.sy=GetDrawValue(token,&next_token);
3653 if (token == next_token)
3654 ThrowPointExpectedException(token,exception);
3655 break;
3656 }
3657 if (LocaleCompare("skewX",keyword) == 0)
3658 {
3659 (void) GetNextToken(q,&q,extent,token);
3660 angle=GetDrawValue(token,&next_token);
3661 if (token == next_token)
3662 ThrowPointExpectedException(token,exception);
3663 affine.ry=sin(DegreesToRadians(angle));
3664 break;
3665 }
3666 if (LocaleCompare("skewY",keyword) == 0)
3667 {
3668 (void) GetNextToken(q,&q,extent,token);
3669 angle=GetDrawValue(token,&next_token);
3670 if (token == next_token)
3671 ThrowPointExpectedException(token,exception);
3672 affine.rx=(-tan(DegreesToRadians(angle)/2.0));
3673 break;
3674 }
3675 if (LocaleCompare("stop-color",keyword) == 0)
3676 {
3677 PixelInfo
3678 stop_color;
3679
3680 number_stops++;
3681 if (number_stops == 1)
3682 stops=(StopInfo *) AcquireQuantumMemory(2,sizeof(*stops));
3683 else
3684 if (number_stops > 2)
3685 stops=(StopInfo *) ResizeQuantumMemory(stops,number_stops,
3686 sizeof(*stops));
3687 if (stops == (StopInfo *) NULL)
3688 {
3689 (void) ThrowMagickException(exception,GetMagickModule(),
3690 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3691 image->filename);
3692 status=MagickFalse;
3693 break;
3694 }
3695 (void) GetNextToken(q,&q,extent,token);
3696 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3697 &stop_color,exception);
3698 stops[number_stops-1].color=stop_color;
3699 (void) GetNextToken(q,&q,extent,token);
3700 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3701 stops[number_stops-1].offset=factor*GetDrawValue(token,
3702 &next_token);
3703 if (token == next_token)
3704 ThrowPointExpectedException(token,exception);
3705 break;
3706 }
3707 if (LocaleCompare("stroke",keyword) == 0)
3708 {
3709 const char
3710 *mvg_class;
3711
3712 (void) GetNextToken(q,&q,extent,token);
3713 if (graphic_context[n]->clip_path != MagickFalse)
3714 break;
3715 mvg_class=(const char *) GetValueFromSplayTree(macros,token);
3716 if (mvg_class != (const char *) NULL)
3717 {
3718 (void) DrawPatternPath(image,draw_info,mvg_class,
3719 &graphic_context[n]->stroke_pattern,exception);
3720 break;
3721 }
3722 (void) FormatLocaleString(pattern,MagickPathExtent,"%s",token);
3723 if (GetImageArtifact(image,pattern) != (const char *) NULL)
3724 {
3725 (void) DrawPatternPath(image,draw_info,token,
3726 &graphic_context[n]->stroke_pattern,exception);
3727 break;
3728 }
3729 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3730 &graphic_context[n]->stroke,exception);
3731 if (graphic_context[n]->stroke_alpha != (double) OpaqueAlpha)
3732 graphic_context[n]->stroke.alpha=
3733 graphic_context[n]->stroke_alpha;
3734 break;
3735 }
3736 if (LocaleCompare("stroke-antialias",keyword) == 0)
3737 {
3738 (void) GetNextToken(q,&q,extent,token);
3739 graphic_context[n]->stroke_antialias=StringToLong(token) != 0 ?
3740 MagickTrue : MagickFalse;
3741 break;
3742 }
3743 if (LocaleCompare("stroke-dasharray",keyword) == 0)
3744 {
3745 if (graphic_context[n]->dash_pattern != (double *) NULL)
3746 graphic_context[n]->dash_pattern=(double *)
3747 RelinquishMagickMemory(graphic_context[n]->dash_pattern);
3748 if (IsPoint(q) != MagickFalse)
3749 {
3750 const char
3751 *r;
3752
3753 r=q;
3754 (void) GetNextToken(r,&r,extent,token);
3755 if (*token == ',')
3756 (void) GetNextToken(r,&r,extent,token);
3757 for (x=0; IsPoint(token) != MagickFalse; x++)
3758 {
3759 (void) GetNextToken(r,&r,extent,token);
3760 if (*token == ',')
3761 (void) GetNextToken(r,&r,extent,token);
3762 }
3763 graphic_context[n]->dash_pattern=(double *)
3764 AcquireQuantumMemory((size_t) (2*x+2),
3765 sizeof(*graphic_context[n]->dash_pattern));
3766 if (graphic_context[n]->dash_pattern == (double *) NULL)
3767 {
3768 (void) ThrowMagickException(exception,GetMagickModule(),
3769 ResourceLimitError,"MemoryAllocationFailed","`%s'",
3770 image->filename);
3771 status=MagickFalse;
3772 break;
3773 }
3774 (void) memset(graphic_context[n]->dash_pattern,0,(size_t)
3775 (2*x+2)*sizeof(*graphic_context[n]->dash_pattern));
3776 for (j=0; j < x; j++)
3777 {
3778 (void) GetNextToken(q,&q,extent,token);
3779 if (*token == ',')
3780 (void) GetNextToken(q,&q,extent,token);
3781 graphic_context[n]->dash_pattern[j]=GetDrawValue(token,
3782 &next_token);
3783 if (token == next_token)
3784 ThrowPointExpectedException(token,exception);
3785 if (graphic_context[n]->dash_pattern[j] <= 0.0)
3786 status=MagickFalse;
3787 }
3788 if ((x & 0x01) != 0)
3789 for ( ; j < (2*x); j++)
3790 graphic_context[n]->dash_pattern[j]=
3791 graphic_context[n]->dash_pattern[j-x];
3792 graphic_context[n]->dash_pattern[j]=0.0;
3793 break;
3794 }
3795 (void) GetNextToken(q,&q,extent,token);
3796 break;
3797 }
3798 if (LocaleCompare("stroke-dashoffset",keyword) == 0)
3799 {
3800 (void) GetNextToken(q,&q,extent,token);
3801 graphic_context[n]->dash_offset=GetDrawValue(token,&next_token);
3802 if (token == next_token)
3803 ThrowPointExpectedException(token,exception);
3804 break;
3805 }
3806 if (LocaleCompare("stroke-linecap",keyword) == 0)
3807 {
3808 ssize_t
3809 linecap;
3810
3811 (void) GetNextToken(q,&q,extent,token);
3812 linecap=ParseCommandOption(MagickLineCapOptions,MagickFalse,token);
3813 if (linecap == -1)
3814 {
3815 status=MagickFalse;
3816 break;
3817 }
3818 graphic_context[n]->linecap=(LineCap) linecap;
3819 break;
3820 }
3821 if (LocaleCompare("stroke-linejoin",keyword) == 0)
3822 {
3823 ssize_t
3824 linejoin;
3825
3826 (void) GetNextToken(q,&q,extent,token);
3827 linejoin=ParseCommandOption(MagickLineJoinOptions,MagickFalse,
3828 token);
3829 if (linejoin == -1)
3830 {
3831 status=MagickFalse;
3832 break;
3833 }
3834 graphic_context[n]->linejoin=(LineJoin) linejoin;
3835 break;
3836 }
3837 if (LocaleCompare("stroke-miterlimit",keyword) == 0)
3838 {
3839 (void) GetNextToken(q,&q,extent,token);
3840 graphic_context[n]->miterlimit=StringToUnsignedLong(token);
3841 break;
3842 }
3843 if (LocaleCompare("stroke-opacity",keyword) == 0)
3844 {
3845 double
3846 opacity;
3847
3848 (void) GetNextToken(q,&q,extent,token);
3849 if (graphic_context[n]->clip_path != MagickFalse)
3850 break;
3851 factor=strchr(token,'%') != (char *) NULL ? 0.01 : 1.0;
3852 opacity=MagickMin(MagickMax(factor*GetDrawValue(token,&next_token),
3853 0.0),1.0);
3854 if (token == next_token)
3855 ThrowPointExpectedException(token,exception);
3856 if (graphic_context[n]->compliance == SVGCompliance)
3857 graphic_context[n]->stroke_alpha*=opacity;
3858 else
3859 graphic_context[n]->stroke_alpha=(double) QuantumRange*opacity;
3860 if (graphic_context[n]->stroke.alpha != (double) TransparentAlpha)
3861 graphic_context[n]->stroke.alpha=graphic_context[n]->stroke_alpha;
3862 else
3863 graphic_context[n]->stroke.alpha=(MagickRealType)
3864 ClampToQuantum((double) QuantumRange*opacity);
3865 graphic_context[n]->stroke.alpha_trait=BlendPixelTrait;
3866 break;
3867 }
3868 if (LocaleCompare("stroke-width",keyword) == 0)
3869 {
3870 (void) GetNextToken(q,&q,extent,token);
3871 if (graphic_context[n]->clip_path != MagickFalse)
3872 break;
3873 graphic_context[n]->stroke_width=GetDrawValue(token,&next_token);
3874 if ((token == next_token) ||
3875 (graphic_context[n]->stroke_width < 0.0))
3876 ThrowPointExpectedException(token,exception);
3877 break;
3878 }
3879 status=MagickFalse;
3880 break;
3881 }
3882 case 't':
3883 case 'T':
3884 {
3885 if (LocaleCompare("text",keyword) == 0)
3886 {
3887 primitive_type=TextPrimitive;
3888 cursor=0.0;
3889 break;
3890 }
3891 if (LocaleCompare("text-align",keyword) == 0)
3892 {
3893 ssize_t
3894 align;
3895
3896 (void) GetNextToken(q,&q,extent,token);
3897 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3898 if (align == -1)
3899 {
3900 status=MagickFalse;
3901 break;
3902 }
3903 graphic_context[n]->align=(AlignType) align;
3904 break;
3905 }
3906 if (LocaleCompare("text-anchor",keyword) == 0)
3907 {
3908 ssize_t
3909 align;
3910
3911 (void) GetNextToken(q,&q,extent,token);
3912 align=ParseCommandOption(MagickAlignOptions,MagickFalse,token);
3913 if (align == -1)
3914 {
3915 status=MagickFalse;
3916 break;
3917 }
3918 graphic_context[n]->align=(AlignType) align;
3919 break;
3920 }
3921 if (LocaleCompare("text-antialias",keyword) == 0)
3922 {
3923 (void) GetNextToken(q,&q,extent,token);
3924 graphic_context[n]->text_antialias=StringToLong(token) != 0 ?
3925 MagickTrue : MagickFalse;
3926 break;
3927 }
3928 if (LocaleCompare("text-undercolor",keyword) == 0)
3929 {
3930 (void) GetNextToken(q,&q,extent,token);
3931 status&=(MagickStatusType) QueryColorCompliance(token,AllCompliance,
3932 &graphic_context[n]->undercolor,exception);
3933 break;
3934 }
3935 if (LocaleCompare("translate",keyword) == 0)
3936 {
3937 (void) GetNextToken(q,&q,extent,token);
3938 affine.tx=GetDrawValue(token,&next_token);
3939 if (token == next_token)
3940 ThrowPointExpectedException(token,exception);
3941 (void) GetNextToken(q,&q,extent,token);
3942 if (*token == ',')
3943 (void) GetNextToken(q,&q,extent,token);
3944 affine.ty=GetDrawValue(token,&next_token);
3945 if (token == next_token)
3946 ThrowPointExpectedException(token,exception);
3947 cursor=0.0;
3948 break;
3949 }
3950 status=MagickFalse;
3951 break;
3952 }
3953 case 'u':
3954 case 'U':
3955 {
3956 if (LocaleCompare("use",keyword) == 0)
3957 {
3958 const char
3959 *use;
3960
3961 /*
3962 Get a macro from the MVG document, and "use" it here.
3963 */
3964 (void) GetNextToken(q,&q,extent,token);
3965 use=(const char *) GetValueFromSplayTree(macros,token);
3966 if (use != (const char *) NULL)
3967 {
3968 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
3969 (void) CloneString(&clone_info->primitive,use);
3970 status=RenderMVGContent(image,clone_info,depth+1,exception);
3971 clone_info=DestroyDrawInfo(clone_info);
3972 }
3973 break;
3974 }
3975 status=MagickFalse;
3976 break;
3977 }
3978 case 'v':
3979 case 'V':
3980 {
3981 if (LocaleCompare("viewbox",keyword) == 0)
3982 {
3983 (void) GetNextToken(q,&q,extent,token);
3984 graphic_context[n]->viewbox.x=CastDoubleToSsizeT(ceil(
3985 GetDrawValue(token,&next_token)-0.5));
3986 if (token == next_token)
3987 ThrowPointExpectedException(token,exception);
3988 (void) GetNextToken(q,&q,extent,token);
3989 if (*token == ',')
3990 (void) GetNextToken(q,&q,extent,token);
3991 graphic_context[n]->viewbox.y=CastDoubleToSsizeT(
3992 ceil(GetDrawValue(token,&next_token)-0.5));
3993 if (token == next_token)
3994 ThrowPointExpectedException(token,exception);
3995 (void) GetNextToken(q,&q,extent,token);
3996 if (*token == ',')
3997 (void) GetNextToken(q,&q,extent,token);
3998 graphic_context[n]->viewbox.width=CastDoubleToSizeT(floor(
3999 GetDrawValue(token,&next_token)+0.5));
4000 if (token == next_token)
4001 ThrowPointExpectedException(token,exception);
4002 (void) GetNextToken(q,&q,extent,token);
4003 if (*token == ',')
4004 (void) GetNextToken(q,&q,extent,token);
4005 graphic_context[n]->viewbox.height=CastDoubleToSizeT(floor(
4006 GetDrawValue(token,&next_token)+0.5));
4007 if (token == next_token)
4008 ThrowPointExpectedException(token,exception);
4009 break;
4010 }
4011 status=MagickFalse;
4012 break;
4013 }
4014 case 'w':
4015 case 'W':
4016 {
4017 if (LocaleCompare("word-spacing",keyword) == 0)
4018 {
4019 (void) GetNextToken(q,&q,extent,token);
4020 graphic_context[n]->interword_spacing=GetDrawValue(token,
4021 &next_token);
4022 if (token == next_token)
4023 ThrowPointExpectedException(token,exception);
4024 break;
4025 }
4026 status=MagickFalse;
4027 break;
4028 }
4029 default:
4030 {
4031 status=MagickFalse;
4032 break;
4033 }
4034 }
4035 if (status == MagickFalse)
4036 break;
4037 if ((fabs(affine.sx-1.0) >= MagickEpsilon) ||
4038 (fabs(affine.rx) >= MagickEpsilon) || (fabs(affine.ry) >= MagickEpsilon) ||
4039 (fabs(affine.sy-1.0) >= MagickEpsilon) ||
4040 (fabs(affine.tx) >= MagickEpsilon) || (fabs(affine.ty) >= MagickEpsilon))
4041 {
4042 graphic_context[n]->affine.sx=current.sx*affine.sx+current.ry*affine.rx;
4043 graphic_context[n]->affine.rx=current.rx*affine.sx+current.sy*affine.rx;
4044 graphic_context[n]->affine.ry=current.sx*affine.ry+current.ry*affine.sy;
4045 graphic_context[n]->affine.sy=current.rx*affine.ry+current.sy*affine.sy;
4046 graphic_context[n]->affine.tx=current.sx*affine.tx+current.ry*affine.ty+
4047 current.tx;
4048 graphic_context[n]->affine.ty=current.rx*affine.tx+current.sy*affine.ty+
4049 current.ty;
4050 }
4051 if (primitive_type == UndefinedPrimitive)
4052 {
4053 if (*q == '\0')
4054 {
4055 if (number_stops > 1)
4056 {
4057 GradientType
4058 type;
4059
4060 type=LinearGradient;
4061 if (draw_info->gradient.type == RadialGradient)
4062 type=RadialGradient;
4063 (void) GradientImage(image,type,PadSpread,stops,number_stops,
4064 exception);
4065 }
4066 if (number_stops > 0)
4067 stops=(StopInfo *) RelinquishMagickMemory(stops);
4068 }
4069 if ((draw_info->debug != MagickFalse) && (q > p))
4070 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int)
4071 (q-p-1),p);
4072 continue;
4073 }
4074 /*
4075 Parse the primitive attributes.
4076 */
4077 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4078 if (primitive_info[i].text != (char *) NULL)
4079 primitive_info[i].text=DestroyString(primitive_info[i].text);
4080 i=0;
4081 mvg_info.offset=i;
4082 j=0;
4083 primitive_info[0].point.x=0.0;
4084 primitive_info[0].point.y=0.0;
4085 primitive_info[0].coordinates=0;
4086 primitive_info[0].method=FloodfillMethod;
4087 primitive_info[0].closed_subpath=MagickFalse;
4088 for (x=0; *q != '\0'; x++)
4089 {
4090 /*
4091 Define points.
4092 */
4093 if (IsPoint(q) == MagickFalse)
4094 break;
4095 (void) GetNextToken(q,&q,extent,token);
4096 point.x=GetDrawValue(token,&next_token);
4097 if (token == next_token)
4098 ThrowPointExpectedException(token,exception);
4099 (void) GetNextToken(q,&q,extent,token);
4100 if (*token == ',')
4101 (void) GetNextToken(q,&q,extent,token);
4102 point.y=GetDrawValue(token,&next_token);
4103 if (token == next_token)
4104 ThrowPointExpectedException(token,exception);
4105 (void) GetNextToken(q,(const char **) NULL,extent,token);
4106 if (*token == ',')
4107 (void) GetNextToken(q,&q,extent,token);
4108 primitive_info[i].primitive=primitive_type;
4109 primitive_info[i].point=point;
4110 primitive_info[i].coordinates=0;
4111 primitive_info[i].method=FloodfillMethod;
4112 primitive_info[i].closed_subpath=MagickFalse;
4113 i++;
4114 mvg_info.offset=i;
4115 if (i < (ssize_t) number_points)
4116 continue;
4117 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4118 number_points);
4119 primitive_info=(*mvg_info.primitive_info);
4120 }
4121 if (status == MagickFalse)
4122 break;
4123 if (primitive_info[j].text != (char *) NULL)
4124 primitive_info[j].text=DestroyString(primitive_info[j].text);
4125 primitive_info[j].primitive=primitive_type;
4126 primitive_info[j].coordinates=(size_t) x;
4127 primitive_info[j].method=FloodfillMethod;
4128 primitive_info[j].closed_subpath=MagickFalse;
4129 /*
4130 Circumscribe primitive within a circle.
4131 */
4132 bounds.x1=primitive_info[j].point.x;
4133 bounds.y1=primitive_info[j].point.y;
4134 bounds.x2=primitive_info[j].point.x;
4135 bounds.y2=primitive_info[j].point.y;
4136 for (k=1; k < (ssize_t) primitive_info[j].coordinates; k++)
4137 {
4138 point=primitive_info[j+k].point;
4139 if (point.x < bounds.x1)
4140 bounds.x1=point.x;
4141 if (point.y < bounds.y1)
4142 bounds.y1=point.y;
4143 if (point.x > bounds.x2)
4144 bounds.x2=point.x;
4145 if (point.y > bounds.y2)
4146 bounds.y2=point.y;
4147 }
4148 /*
4149 Speculate how many points our primitive might consume.
4150 */
4151 coordinates=(double) primitive_info[j].coordinates;
4152 switch (primitive_type)
4153 {
4154 case RectanglePrimitive:
4155 {
4156 coordinates*=5.0;
4157 break;
4158 }
4159 case RoundRectanglePrimitive:
4160 {
4161 double
4162 alpha,
4163 beta,
4164 radius;
4165
4166 alpha=bounds.x2-bounds.x1;
4167 beta=bounds.y2-bounds.y1;
4168 radius=hypot(alpha,beta);
4169 coordinates*=5.0;
4170 coordinates+=2.0*((size_t) ceil((double) MagickPI*radius))+6.0*
4171 BezierQuantum+360.0;
4172 break;
4173 }
4174 case BezierPrimitive:
4175 {
4176 coordinates=(BezierQuantum*(double) primitive_info[j].coordinates);
4177 break;
4178 }
4179 case PathPrimitive:
4180 {
4181 char
4182 *s,
4183 *t;
4184
4185 (void) GetNextToken(q,&q,extent,token);
4186 coordinates=1.0;
4187 t=token;
4188 for (s=token; *s != '\0'; s=t)
4189 {
4190 double
4191 value;
4192
4193 value=GetDrawValue(s,&t);
4194 (void) value;
4195 if (s == t)
4196 {
4197 t++;
4198 continue;
4199 }
4200 coordinates++;
4201 }
4202 for (s=token; *s != '\0'; s++)
4203 if (strspn(s,"AaCcQqSsTt") != 0)
4204 coordinates+=(20.0*BezierQuantum)+360.0;
4205 break;
4206 }
4207 default:
4208 break;
4209 }
4210 if (status == MagickFalse)
4211 break;
4212 if (((size_t) (i+coordinates)) >= number_points)
4213 {
4214 /*
4215 Resize based on speculative points required by primitive.
4216 */
4217 number_points+=(size_t) coordinates+1;
4218 if (number_points < (size_t) coordinates)
4219 {
4220 (void) ThrowMagickException(exception,GetMagickModule(),
4221 ResourceLimitError,"MemoryAllocationFailed","`%s'",
4222 image->filename);
4223 status=MagickFalse;
4224 break;
4225 }
4226 mvg_info.offset=i;
4227 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4228 number_points);
4229 primitive_info=(*mvg_info.primitive_info);
4230 }
4231 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,
4232 PrimitiveExtentPad);
4233 primitive_info=(*mvg_info.primitive_info);
4234 if (status == MagickFalse)
4235 break;
4236 mvg_info.offset=j;
4237 switch (primitive_type)
4238 {
4239 case PointPrimitive:
4240 default:
4241 {
4242 if (primitive_info[j].coordinates != 1)
4243 {
4244 status=MagickFalse;
4245 break;
4246 }
4247 status&=(MagickStatusType) TracePoint(primitive_info+j,
4248 primitive_info[j].point);
4249 primitive_info=(*mvg_info.primitive_info);
4250 i=j+(ssize_t) primitive_info[j].coordinates;
4251 break;
4252 }
4253 case LinePrimitive:
4254 {
4255 if (primitive_info[j].coordinates != 2)
4256 {
4257 status=MagickFalse;
4258 break;
4259 }
4260 status&=(MagickStatusType) TraceLine(primitive_info+j,
4261 primitive_info[j].point,primitive_info[j+1].point);
4262 primitive_info=(*mvg_info.primitive_info);
4263 i=j+(ssize_t) primitive_info[j].coordinates;
4264 break;
4265 }
4266 case RectanglePrimitive:
4267 {
4268 if (primitive_info[j].coordinates != 2)
4269 {
4270 status=MagickFalse;
4271 break;
4272 }
4273 status&=(MagickStatusType) TraceRectangle(primitive_info+j,
4274 primitive_info[j].point,primitive_info[j+1].point);
4275 primitive_info=(*mvg_info.primitive_info);
4276 i=j+(ssize_t) primitive_info[j].coordinates;
4277 break;
4278 }
4279 case RoundRectanglePrimitive:
4280 {
4281 if (primitive_info[j].coordinates != 3)
4282 {
4283 status=MagickFalse;
4284 break;
4285 }
4286 if ((primitive_info[j+2].point.x < 0.0) ||
4287 (primitive_info[j+2].point.y < 0.0))
4288 {
4289 status=MagickFalse;
4290 break;
4291 }
4292 if ((primitive_info[j+1].point.x-primitive_info[j].point.x) < 0.0)
4293 {
4294 status=MagickFalse;
4295 break;
4296 }
4297 if ((primitive_info[j+1].point.y-primitive_info[j].point.y) < 0.0)
4298 {
4299 status=MagickFalse;
4300 break;
4301 }
4302 status&=(MagickStatusType) TraceRoundRectangle(&mvg_info,
4303 primitive_info[j].point,primitive_info[j+1].point,
4304 primitive_info[j+2].point);
4305 primitive_info=(*mvg_info.primitive_info);
4306 i=j+(ssize_t) primitive_info[j].coordinates;
4307 break;
4308 }
4309 case ArcPrimitive:
4310 {
4311 if (primitive_info[j].coordinates != 3)
4312 {
4313 status=MagickFalse;
4314 break;
4315 }
4316 status&=(MagickStatusType) TraceArc(&mvg_info,primitive_info[j].point,
4317 primitive_info[j+1].point,primitive_info[j+2].point);
4318 primitive_info=(*mvg_info.primitive_info);
4319 i=j+(ssize_t) primitive_info[j].coordinates;
4320 break;
4321 }
4322 case EllipsePrimitive:
4323 {
4324 if (primitive_info[j].coordinates != 3)
4325 {
4326 status=MagickFalse;
4327 break;
4328 }
4329 if ((primitive_info[j+1].point.x < 0.0) ||
4330 (primitive_info[j+1].point.y < 0.0))
4331 {
4332 status=MagickFalse;
4333 break;
4334 }
4335 status&=(MagickStatusType) TraceEllipse(&mvg_info,
4336 primitive_info[j].point,primitive_info[j+1].point,
4337 primitive_info[j+2].point);
4338 primitive_info=(*mvg_info.primitive_info);
4339 i=j+(ssize_t) primitive_info[j].coordinates;
4340 break;
4341 }
4342 case CirclePrimitive:
4343 {
4344 if (primitive_info[j].coordinates != 2)
4345 {
4346 status=MagickFalse;
4347 break;
4348 }
4349 status&=(MagickStatusType) TraceCircle(&mvg_info,
4350 primitive_info[j].point,primitive_info[j+1].point);
4351 primitive_info=(*mvg_info.primitive_info);
4352 i=j+(ssize_t) primitive_info[j].coordinates;
4353 break;
4354 }
4355 case PolylinePrimitive:
4356 {
4357 if (primitive_info[j].coordinates < 1)
4358 {
4359 status=MagickFalse;
4360 break;
4361 }
4362 break;
4363 }
4364 case PolygonPrimitive:
4365 {
4366 if (primitive_info[j].coordinates < 3)
4367 {
4368 status=MagickFalse;
4369 break;
4370 }
4371 primitive_info[i]=primitive_info[j];
4372 primitive_info[i].coordinates=0;
4373 primitive_info[j].coordinates++;
4374 primitive_info[j].closed_subpath=MagickTrue;
4375 i++;
4376 break;
4377 }
4378 case BezierPrimitive:
4379 {
4380 if (primitive_info[j].coordinates < 3)
4381 {
4382 status=MagickFalse;
4383 break;
4384 }
4385 status&=(MagickStatusType) TraceBezier(&mvg_info,
4386 primitive_info[j].coordinates);
4387 primitive_info=(*mvg_info.primitive_info);
4388 i=j+(ssize_t) primitive_info[j].coordinates;
4389 break;
4390 }
4391 case PathPrimitive:
4392 {
4393 coordinates=(double) TracePath(&mvg_info,token,exception);
4394 primitive_info=(*mvg_info.primitive_info);
4395 if (coordinates < 0.0)
4396 {
4397 status=MagickFalse;
4398 break;
4399 }
4400 i=(ssize_t) (j+coordinates);
4401 break;
4402 }
4403 case AlphaPrimitive:
4404 case ColorPrimitive:
4405 {
4406 ssize_t
4407 method;
4408
4409 if (primitive_info[j].coordinates != 1)
4410 {
4411 status=MagickFalse;
4412 break;
4413 }
4414 (void) GetNextToken(q,&q,extent,token);
4415 method=ParseCommandOption(MagickMethodOptions,MagickFalse,token);
4416 if (method == -1)
4417 {
4418 status=MagickFalse;
4419 break;
4420 }
4421 primitive_info[j].method=(PaintMethod) method;
4422 break;
4423 }
4424 case TextPrimitive:
4425 {
4426 if (primitive_info[j].coordinates != 1)
4427 {
4428 status=MagickFalse;
4429 break;
4430 }
4431 if (*token != ',')
4432 (void) GetNextToken(q,&q,extent,token);
4433 (void) CloneString(&primitive_info[j].text,token);
4434 /*
4435 Compute text cursor offset.
4436 */
4437 clone_info=CloneDrawInfo((ImageInfo *) NULL,graphic_context[n]);
4438 if ((fabs(mvg_info.point.x-primitive_info->point.x) < MagickEpsilon) &&
4439 (fabs(mvg_info.point.y-primitive_info->point.y) < MagickEpsilon))
4440 {
4441 mvg_info.point=primitive_info->point;
4442 primitive_info->point.x+=cursor;
4443 }
4444 else
4445 {
4446 mvg_info.point=primitive_info->point;
4447 cursor=0.0;
4448 }
4449 clone_info->render=MagickFalse;
4450 clone_info->text=AcquireString(token);
4451 status&=(MagickStatusType) GetTypeMetrics(image,clone_info,
4452 &metrics,exception);
4453 clone_info=DestroyDrawInfo(clone_info);
4454 cursor+=metrics.width;
4455 if (graphic_context[n]->compliance != SVGCompliance)
4456 cursor=0.0;
4457 break;
4458 }
4459 case ImagePrimitive:
4460 {
4461 if (primitive_info[j].coordinates != 2)
4462 {
4463 status=MagickFalse;
4464 break;
4465 }
4466 (void) GetNextToken(q,&q,extent,token);
4467 (void) CloneString(&primitive_info[j].text,token);
4468 break;
4469 }
4470 }
4471 mvg_info.offset=i;
4472 if (status == 0)
4473 break;
4474 primitive_info[i].primitive=UndefinedPrimitive;
4475 if ((draw_info->debug != MagickFalse) && (q > p))
4476 (void) LogMagickEvent(DrawEvent,GetMagickModule()," %.*s",(int) (q-p),p);
4477 /*
4478 Sanity check.
4479 */
4480 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,ExpandAffine(
4481 &graphic_context[n]->affine));
4482 primitive_info=(*mvg_info.primitive_info);
4483 if (status == 0)
4484 break;
4485 status&=(MagickStatusType) CheckPrimitiveExtent(&mvg_info,(double)
4486 graphic_context[n]->stroke_width);
4487 primitive_info=(*mvg_info.primitive_info);
4488 if (status == 0)
4489 break;
4490 if (i == 0)
4491 continue;
4492 /*
4493 Transform points.
4494 */
4495 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4496 {
4497 point=primitive_info[i].point;
4498 primitive_info[i].point.x=graphic_context[n]->affine.sx*point.x+
4499 graphic_context[n]->affine.ry*point.y+graphic_context[n]->affine.tx;
4500 primitive_info[i].point.y=graphic_context[n]->affine.rx*point.x+
4501 graphic_context[n]->affine.sy*point.y+graphic_context[n]->affine.ty;
4502 point=primitive_info[i].point;
4503 if (point.x < graphic_context[n]->bounds.x1)
4504 graphic_context[n]->bounds.x1=point.x;
4505 if (point.y < graphic_context[n]->bounds.y1)
4506 graphic_context[n]->bounds.y1=point.y;
4507 if (point.x > graphic_context[n]->bounds.x2)
4508 graphic_context[n]->bounds.x2=point.x;
4509 if (point.y > graphic_context[n]->bounds.y2)
4510 graphic_context[n]->bounds.y2=point.y;
4511 if (primitive_info[i].primitive == ImagePrimitive)
4512 break;
4513 if (i >= (ssize_t) number_points)
4514 ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
4515 }
4516 if (graphic_context[n]->render != MagickFalse)
4517 {
4518 if ((n != 0) && (graphic_context[n]->compliance != SVGCompliance) &&
4519 (graphic_context[n]->clip_mask != (char *) NULL) &&
4520 (LocaleCompare(graphic_context[n]->clip_mask,
4521 graphic_context[n-1]->clip_mask) != 0))
4522 {
4523 const char
4524 *clip_path;
4525
4526 clip_path=(const char *) GetValueFromSplayTree(macros,
4527 graphic_context[n]->clip_mask);
4528 if (clip_path != (const char *) NULL)
4529 (void) SetImageArtifact(image,graphic_context[n]->clip_mask,
4530 clip_path);
4531 status&=(MagickStatusType) DrawClipPath(image,graphic_context[n],
4532 graphic_context[n]->clip_mask,exception);
4533 }
4534 status&=(MagickStatusType) DrawPrimitive(image,graphic_context[n],
4535 primitive_info,exception);
4536 }
4537 proceed=SetImageProgress(image,RenderImageTag,q-primitive,(MagickSizeType)
4538 primitive_extent);
4539 if (proceed == MagickFalse)
4540 break;
4541 if (status == 0)
4542 break;
4543 }
4544 if (draw_info->debug != MagickFalse)
4545 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end draw-image");
4546 /*
4547 Relinquish resources.
4548 */
4549 macros=DestroySplayTree(macros);
4550 token=DestroyString(token);
4551 if (primitive_info != (PrimitiveInfo *) NULL)
4552 {
4553 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
4554 if (primitive_info[i].text != (char *) NULL)
4555 primitive_info[i].text=DestroyString(primitive_info[i].text);
4556 primitive_info=(PrimitiveInfo *) RelinquishMagickMemory(primitive_info);
4557 }
4558 primitive=DestroyString(primitive);
4559 if (stops != (StopInfo *) NULL)
4560 stops=(StopInfo *) RelinquishMagickMemory(stops);
4561 for ( ; n >= 0; n--)
4562 graphic_context[n]=DestroyDrawInfo(graphic_context[n]);
4563 graphic_context=(DrawInfo **) RelinquishMagickMemory(graphic_context);
4564 if ((status == MagickFalse) && (exception->severity < ErrorException))
4565 ThrowBinaryException(DrawError,"NonconformingDrawingPrimitiveDefinition",
4566 keyword);
4567 return(status != 0 ? MagickTrue : MagickFalse);
4568}
4569
4570MagickExport MagickBooleanType DrawImage(Image *image,const DrawInfo *draw_info,
4571 ExceptionInfo *exception)
4572{
4573 return(RenderMVGContent(image,draw_info,0,exception));
4574}
4575␌
4576/*
4577%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4578% %
4579% %
4580% %
4581% D r a w P a t t e r n P a t h %
4582% %
4583% %
4584% %
4585%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4586%
4587% DrawPatternPath() draws a pattern.
4588%
4589% The format of the DrawPatternPath method is:
4590%
4591% MagickBooleanType DrawPatternPath(Image *image,const DrawInfo *draw_info,
4592% const char *name,Image **pattern,ExceptionInfo *exception)
4593%
4594% A description of each parameter follows:
4595%
4596% o image: the image.
4597%
4598% o draw_info: the draw info.
4599%
4600% o name: the pattern name.
4601%
4602% o image: the image.
4603%
4604% o exception: return any errors or warnings in this structure.
4605%
4606*/
4607MagickExport MagickBooleanType DrawPatternPath(Image *image,
4608 const DrawInfo *draw_info,const char *name,Image **pattern,
4609 ExceptionInfo *exception)
4610{
4611 char
4612 property[MagickPathExtent];
4613
4614 const char
4615 *geometry,
4616 *path,
4617 *type;
4618
4619 DrawInfo
4620 *clone_info;
4621
4622 ImageInfo
4623 *image_info;
4624
4625 MagickBooleanType
4626 status;
4627
4628 assert(image != (Image *) NULL);
4629 assert(image->signature == MagickCoreSignature);
4630 assert(draw_info != (const DrawInfo *) NULL);
4631 assert(name != (const char *) NULL);
4632 if (IsEventLogging() != MagickFalse)
4633 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
4634 (void) FormatLocaleString(property,MagickPathExtent,"%s",name);
4635 path=GetImageArtifact(image,property);
4636 if (path == (const char *) NULL)
4637 return(MagickFalse);
4638 (void) FormatLocaleString(property,MagickPathExtent,"%s-geometry",name);
4639 geometry=GetImageArtifact(image,property);
4640 if (geometry == (const char *) NULL)
4641 return(MagickFalse);
4642 if ((*pattern) != (Image *) NULL)
4643 *pattern=DestroyImage(*pattern);
4644 image_info=AcquireImageInfo();
4645 image_info->size=AcquireString(geometry);
4646 *pattern=AcquireImage(image_info,exception);
4647 image_info=DestroyImageInfo(image_info);
4648 (void) QueryColorCompliance("#00000000",AllCompliance,
4649 &(*pattern)->background_color,exception);
4650 (void) SetImageBackgroundColor(*pattern,exception);
4651 if (draw_info->debug != MagickFalse)
4652 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
4653 "begin pattern-path %s %s",name,geometry);
4654 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
4655 if (clone_info->fill_pattern != (Image *) NULL)
4656 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
4657 if (clone_info->stroke_pattern != (Image *) NULL)
4658 clone_info->stroke_pattern=DestroyImage(clone_info->stroke_pattern);
4659 (void) FormatLocaleString(property,MagickPathExtent,"%s-type",name);
4660 type=GetImageArtifact(image,property);
4661 if (type != (const char *) NULL)
4662 clone_info->gradient.type=(GradientType) ParseCommandOption(
4663 MagickGradientOptions,MagickFalse,type);
4664 (void) CloneString(&clone_info->primitive,path);
4665 status=RenderMVGContent(*pattern,clone_info,0,exception);
4666 clone_info=DestroyDrawInfo(clone_info);
4667 if (draw_info->debug != MagickFalse)
4668 (void) LogMagickEvent(DrawEvent,GetMagickModule(),"end pattern-path");
4669 return(status);
4670}
4671␌
4672/*
4673%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4674% %
4675% %
4676% %
4677+ D r a w P o l y g o n P r i m i t i v e %
4678% %
4679% %
4680% %
4681%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
4682%
4683% DrawPolygonPrimitive() draws a polygon on the image.
4684%
4685% The format of the DrawPolygonPrimitive method is:
4686%
4687% MagickBooleanType DrawPolygonPrimitive(Image *image,
4688% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
4689% ExceptionInfo *exception)
4690%
4691% A description of each parameter follows:
4692%
4693% o image: the image.
4694%
4695% o draw_info: the draw info.
4696%
4697% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
4698%
4699% o exception: return any errors or warnings in this structure.
4700%
4701*/
4702
4703static PolygonInfo **DestroyPolygonTLS(PolygonInfo **polygon_info)
4704{
4705 ssize_t
4706 i;
4707
4708 assert(polygon_info != (PolygonInfo **) NULL);
4709 for (i=0; i < (ssize_t) GetMagickResourceLimit(ThreadResource); i++)
4710 if (polygon_info[i] != (PolygonInfo *) NULL)
4711 polygon_info[i]=DestroyPolygonInfo(polygon_info[i]);
4712 polygon_info=(PolygonInfo **) RelinquishMagickMemory(polygon_info);
4713 return(polygon_info);
4714}
4715
4716static PolygonInfo **AcquirePolygonTLS(const PrimitiveInfo *primitive_info,
4717 ExceptionInfo *exception)
4718{
4719 PathInfo
4720 *magick_restrict path_info;
4721
4722 PolygonInfo
4723 **polygon_info;
4724
4725 size_t
4726 number_threads;
4727
4728 number_threads=(size_t) GetMagickResourceLimit(ThreadResource);
4729 polygon_info=(PolygonInfo **) AcquireQuantumMemory(number_threads,
4730 sizeof(*polygon_info));
4731 if (polygon_info == (PolygonInfo **) NULL)
4732 {
4733 (void) ThrowMagickException(exception,GetMagickModule(),
4734 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4735 return((PolygonInfo **) NULL);
4736 }
4737 (void) memset(polygon_info,0,number_threads*sizeof(*polygon_info));
4738 path_info=ConvertPrimitiveToPath(primitive_info,exception);
4739 if (path_info == (PathInfo *) NULL)
4740 return(DestroyPolygonTLS(polygon_info));
4741 polygon_info[0]=ConvertPathToPolygon(path_info,exception);
4742 if (polygon_info[0] == (PolygonInfo *) NULL)
4743 {
4744 (void) ThrowMagickException(exception,GetMagickModule(),
4745 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4746 return(DestroyPolygonTLS(polygon_info));
4747 }
4748 path_info=(PathInfo *) RelinquishMagickMemory(path_info);
4749 return(polygon_info);
4750}
4751
4752static MagickBooleanType ClonePolygonEdgesTLS(PolygonInfo **polygon_info,
4753 const size_t number_threads,ExceptionInfo *exception)
4754{
4755 ssize_t
4756 i;
4757
4758 for (i=1; i < (ssize_t) number_threads; i++)
4759 {
4760 EdgeInfo
4761 *edge_info;
4762
4763 ssize_t
4764 j;
4765
4766 polygon_info[i]=(PolygonInfo *) AcquireMagickMemory(
4767 sizeof(*polygon_info[i]));
4768 if (polygon_info[i] == (PolygonInfo *) NULL)
4769 {
4770 (void) ThrowMagickException(exception,GetMagickModule(),
4771 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4772 return(MagickFalse);
4773 }
4774 polygon_info[i]->number_edges=0;
4775 edge_info=polygon_info[0]->edges;
4776 polygon_info[i]->edges=(EdgeInfo *) AcquireQuantumMemory(
4777 polygon_info[0]->number_edges,sizeof(*edge_info));
4778 if (polygon_info[i]->edges == (EdgeInfo *) NULL)
4779 {
4780 (void) ThrowMagickException(exception,GetMagickModule(),
4781 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4782 return(MagickFalse);
4783 }
4784 (void) memcpy(polygon_info[i]->edges,edge_info,
4785 polygon_info[0]->number_edges*sizeof(*edge_info));
4786 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4787 polygon_info[i]->edges[j].points=(PointInfo *) NULL;
4788 polygon_info[i]->number_edges=polygon_info[0]->number_edges;
4789 for (j=0; j < (ssize_t) polygon_info[i]->number_edges; j++)
4790 {
4791 edge_info=polygon_info[0]->edges+j;
4792 polygon_info[i]->edges[j].points=(PointInfo *) AcquireQuantumMemory(
4793 edge_info->number_points,sizeof(*edge_info));
4794 if (polygon_info[i]->edges[j].points == (PointInfo *) NULL)
4795 {
4796 (void) ThrowMagickException(exception,GetMagickModule(),
4797 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
4798 return(MagickFalse);
4799 }
4800 (void) memcpy(polygon_info[i]->edges[j].points,edge_info->points,
4801 edge_info->number_points*sizeof(*edge_info->points));
4802 }
4803 }
4804 return(MagickTrue);
4805}
4806
4807static size_t DestroyEdge(PolygonInfo *polygon_info,const ssize_t edge)
4808{
4809 assert(edge < (ssize_t) polygon_info->number_edges);
4810 polygon_info->edges[edge].points=(PointInfo *) RelinquishMagickMemory(
4811 polygon_info->edges[edge].points);
4812 polygon_info->number_edges--;
4813 if (edge < (ssize_t) polygon_info->number_edges)
4814 (void) memmove(polygon_info->edges+edge,polygon_info->edges+edge+1,
4815 (polygon_info->number_edges-(size_t) edge)*sizeof(*polygon_info->edges));
4816 return(polygon_info->number_edges);
4817}
4818
4819static double GetFillAlpha(PolygonInfo *polygon_info,const double mid,
4820 const MagickBooleanType fill,const FillRule fill_rule,const ssize_t x,
4821 const ssize_t y,double *stroke_alpha)
4822{
4823 double
4824 alpha,
4825 beta,
4826 distance,
4827 subpath_alpha;
4828
4829 const PointInfo
4830 *q;
4831
4832 EdgeInfo
4833 *p;
4834
4835 PointInfo
4836 delta;
4837
4838 ssize_t
4839 i,
4840 j,
4841 winding_number;
4842
4843 /*
4844 Compute fill & stroke opacity for this (x,y) point.
4845 */
4846 *stroke_alpha=0.0;
4847 subpath_alpha=0.0;
4848 p=polygon_info->edges;
4849 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4850 {
4851 if ((double) y <= (p->bounds.y1-mid-0.5))
4852 break;
4853 if ((double) y > (p->bounds.y2+mid+0.5))
4854 {
4855 p--;
4856 (void) DestroyEdge(polygon_info,j--);
4857 continue;
4858 }
4859 if (((double) x <= (p->bounds.x1-mid-0.5)) ||
4860 ((double) x > (p->bounds.x2+mid+0.5)))
4861 continue;
4862 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4863 for ( ; i < (ssize_t) p->number_points; i++)
4864 {
4865 if ((double) y <= (p->points[i-1].y-mid-0.5))
4866 break;
4867 if ((double) y > (p->points[i].y+mid+0.5))
4868 continue;
4869 if (p->scanline != (double) y)
4870 {
4871 p->scanline=(double) y;
4872 p->highwater=(size_t) i;
4873 }
4874 /*
4875 Compute distance between a point and an edge.
4876 */
4877 q=p->points+i-1;
4878 delta.x=(q+1)->x-q->x;
4879 delta.y=(q+1)->y-q->y;
4880 beta=delta.x*(x-q->x)+delta.y*(y-q->y); /* segLen*point-cos(theta) */
4881 if (beta <= 0.0)
4882 {
4883 /*
4884 Cosine <= 0, point is closest to q.
4885 */
4886 delta.x=(double) x-q->x;
4887 delta.y=(double) y-q->y;
4888 distance=delta.x*delta.x+delta.y*delta.y;
4889 }
4890 else
4891 {
4892 alpha=delta.x*delta.x+delta.y*delta.y; /* segLen*segLen */
4893 if (beta >= alpha)
4894 {
4895 /*
4896 Point is closest to q+1.
4897 */
4898 delta.x=(double) x-(q+1)->x;
4899 delta.y=(double) y-(q+1)->y;
4900 distance=delta.x*delta.x+delta.y*delta.y;
4901 }
4902 else
4903 {
4904 /*
4905 Point is closest to point between q & q+1.
4906 */
4907 alpha=MagickSafeReciprocal(alpha);
4908 beta=delta.x*(y-q->y)-delta.y*(x-q->x);
4909 distance=alpha*beta*beta;
4910 }
4911 }
4912 /*
4913 Compute stroke & subpath opacity.
4914 */
4915 beta=0.0;
4916 if (p->ghostline == MagickFalse)
4917 {
4918 alpha=mid+0.5;
4919 if ((*stroke_alpha < 1.0) &&
4920 (distance <= ((alpha+0.25)*(alpha+0.25))))
4921 {
4922 alpha=mid-0.5;
4923 if (distance <= ((alpha+0.25)*(alpha+0.25)))
4924 *stroke_alpha=1.0;
4925 else
4926 {
4927 beta=1.0;
4928 if (fabs(distance-1.0) >= MagickEpsilon)
4929 beta=sqrt((double) distance);
4930 alpha=beta-mid-0.5;
4931 if (*stroke_alpha < ((alpha-0.25)*(alpha-0.25)))
4932 *stroke_alpha=(alpha-0.25)*(alpha-0.25);
4933 }
4934 }
4935 }
4936 if ((fill == MagickFalse) || (distance > 1.0) || (subpath_alpha >= 1.0))
4937 continue;
4938 if (distance <= 0.0)
4939 {
4940 subpath_alpha=1.0;
4941 continue;
4942 }
4943 if (distance > 1.0)
4944 continue;
4945 if (fabs(beta) < MagickEpsilon)
4946 {
4947 beta=1.0;
4948 if (fabs(distance-1.0) >= MagickEpsilon)
4949 beta=sqrt(distance);
4950 }
4951 alpha=beta-1.0;
4952 if (subpath_alpha < (alpha*alpha))
4953 subpath_alpha=alpha*alpha;
4954 }
4955 }
4956 /*
4957 Compute fill opacity.
4958 */
4959 if (fill == MagickFalse)
4960 return(0.0);
4961 if (subpath_alpha >= 1.0)
4962 return(1.0);
4963 /*
4964 Determine winding number.
4965 */
4966 winding_number=0;
4967 p=polygon_info->edges;
4968 for (j=0; j < (ssize_t) polygon_info->number_edges; j++, p++)
4969 {
4970 if ((double) y <= p->bounds.y1)
4971 break;
4972 if (((double) y > p->bounds.y2) || ((double) x <= p->bounds.x1))
4973 continue;
4974 if ((double) x > p->bounds.x2)
4975 {
4976 winding_number+=p->direction != 0 ? 1 : -1;
4977 continue;
4978 }
4979 i=(ssize_t) MagickMax((double) p->highwater,1.0);
4980 for ( ; i < (ssize_t) (p->number_points-1); i++)
4981 if ((double) y <= p->points[i].y)
4982 break;
4983 q=p->points+i-1;
4984 if ((((q+1)->x-q->x)*(y-q->y)) <= (((q+1)->y-q->y)*(x-q->x)))
4985 winding_number+=p->direction != 0 ? 1 : -1;
4986 }
4987 if (fill_rule != NonZeroRule)
4988 {
4989 if ((MagickAbsoluteValue(winding_number) & 0x01) != 0)
4990 return(1.0);
4991 }
4992 else
4993 if (MagickAbsoluteValue(winding_number) != 0)
4994 return(1.0);
4995 return(subpath_alpha);
4996}
4997
4998static MagickBooleanType DrawPolygonPrimitive(Image *image,
4999 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5000 ExceptionInfo *exception)
5001{
5002 typedef struct _ExtentInfo
5003 {
5004 ssize_t
5005 x1,
5006 y1,
5007 x2,
5008 y2;
5009 } ExtentInfo;
5010
5011 CacheView
5012 *image_view;
5013
5014 const char
5015 *artifact;
5016
5017 double
5018 mid;
5019
5020 EdgeInfo
5021 *p;
5022
5023 ExtentInfo
5024 poly_extent;
5025
5026 MagickBooleanType
5027 fill,
5028 status;
5029
5030 PolygonInfo
5031 **magick_restrict polygon_info;
5032
5033 SegmentInfo
5034 bounds;
5035
5036 size_t
5037 number_threads;
5038
5039 ssize_t
5040 i,
5041 y;
5042
5043 assert(image != (Image *) NULL);
5044 assert(image->signature == MagickCoreSignature);
5045 assert(draw_info != (DrawInfo *) NULL);
5046 assert(draw_info->signature == MagickCoreSignature);
5047 assert(primitive_info != (PrimitiveInfo *) NULL);
5048 if (IsEventLogging() != MagickFalse)
5049 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
5050 if (primitive_info->coordinates <= 1)
5051 return(MagickTrue);
5052 /*
5053 Compute bounding box.
5054 */
5055 polygon_info=AcquirePolygonTLS(primitive_info,exception);
5056 if (polygon_info == (PolygonInfo **) NULL)
5057 return(MagickFalse);
5058 if (draw_info->debug != MagickFalse)
5059 (void) LogMagickEvent(DrawEvent,GetMagickModule()," begin draw-polygon");
5060 fill=(primitive_info->method == FillToBorderMethod) ||
5061 (primitive_info->method == FloodfillMethod) ? MagickTrue : MagickFalse;
5062 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5063 bounds=polygon_info[0]->edges[0].bounds;
5064 artifact=GetImageArtifact(image,"draw:render-bounding-rectangles");
5065 if (IsStringTrue(artifact) != MagickFalse)
5066 (void) DrawBoundingRectangles(image,draw_info,polygon_info[0],exception);
5067 for (i=1; i < (ssize_t) polygon_info[0]->number_edges; i++)
5068 {
5069 p=polygon_info[0]->edges+i;
5070 if (p->bounds.x1 < bounds.x1)
5071 bounds.x1=p->bounds.x1;
5072 if (p->bounds.y1 < bounds.y1)
5073 bounds.y1=p->bounds.y1;
5074 if (p->bounds.x2 > bounds.x2)
5075 bounds.x2=p->bounds.x2;
5076 if (p->bounds.y2 > bounds.y2)
5077 bounds.y2=p->bounds.y2;
5078 }
5079 bounds.x1-=(mid+1.0);
5080 bounds.y1-=(mid+1.0);
5081 bounds.x2+=(mid+1.0);
5082 bounds.y2+=(mid+1.0);
5083 if ((bounds.x1 >= (double) image->columns) ||
5084 (bounds.y1 >= (double) image->rows) ||
5085 (bounds.x2 <= 0.0) || (bounds.y2 <= 0.0))
5086 {
5087 polygon_info=DestroyPolygonTLS(polygon_info);
5088 return(MagickTrue); /* virtual polygon */
5089 }
5090 bounds.x1=bounds.x1 < 0.0 ? 0.0 : bounds.x1 >= (double) image->columns-1.0 ?
5091 (double) image->columns-1.0 : bounds.x1;
5092 bounds.y1=bounds.y1 < 0.0 ? 0.0 : bounds.y1 >= (double) image->rows-1.0 ?
5093 (double) image->rows-1.0 : bounds.y1;
5094 bounds.x2=bounds.x2 < 0.0 ? 0.0 : bounds.x2 >= (double) image->columns-1.0 ?
5095 (double) image->columns-1.0 : bounds.x2;
5096 bounds.y2=bounds.y2 < 0.0 ? 0.0 : bounds.y2 >= (double) image->rows-1.0 ?
5097 (double) image->rows-1.0 : bounds.y2;
5098 poly_extent.x1=CastDoubleToSsizeT(ceil(bounds.x1-0.5));
5099 poly_extent.y1=CastDoubleToSsizeT(ceil(bounds.y1-0.5));
5100 poly_extent.x2=CastDoubleToSsizeT(floor(bounds.x2+0.5));
5101 poly_extent.y2=CastDoubleToSsizeT(floor(bounds.y2+0.5));
5102 number_threads=(size_t) GetMagickNumberThreads(image,image,(size_t)
5103 (poly_extent.y2-poly_extent.y1+1),1);
5104 status=ClonePolygonEdgesTLS(polygon_info,number_threads,exception);
5105 if (status == MagickFalse)
5106 {
5107 polygon_info=DestroyPolygonTLS(polygon_info);
5108 return(status);
5109 }
5110 image_view=AcquireAuthenticCacheView(image,exception);
5111 if ((primitive_info->coordinates == 1) ||
5112 (polygon_info[0]->number_edges == 0))
5113 {
5114 /*
5115 Draw point.
5116 */
5117#if defined(MAGICKCORE_OPENMP_SUPPORT)
5118 #pragma omp parallel for schedule(static) shared(status) \
5119 num_threads((int) number_threads)
5120#endif
5121 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5122 {
5123 PixelInfo
5124 pixel;
5125
5126 ssize_t
5127 x;
5128
5129 Quantum
5130 *magick_restrict q;
5131
5132 if (status == MagickFalse)
5133 continue;
5134 x=poly_extent.x1;
5135 q=GetCacheViewAuthenticPixels(image_view,x,y,(size_t) (poly_extent.x2-
5136 x+1),1,exception);
5137 if (q == (Quantum *) NULL)
5138 {
5139 status=MagickFalse;
5140 continue;
5141 }
5142 GetPixelInfo(image,&pixel);
5143 for ( ; x <= poly_extent.x2; x++)
5144 {
5145 if ((x == CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5))) &&
5146 (y == CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5))))
5147 {
5148 GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&pixel,
5149 exception);
5150 SetPixelViaPixelInfo(image,&pixel,q);
5151 }
5152 q+=(ptrdiff_t) GetPixelChannels(image);
5153 }
5154 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5155 status=MagickFalse;
5156 }
5157 image_view=DestroyCacheView(image_view);
5158 polygon_info=DestroyPolygonTLS(polygon_info);
5159 if (draw_info->debug != MagickFalse)
5160 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5161 " end draw-polygon");
5162 return(status);
5163 }
5164 /*
5165 Draw polygon or line.
5166 */
5167#if defined(MAGICKCORE_OPENMP_SUPPORT)
5168 #pragma omp parallel for schedule(static) shared(status) \
5169 num_threads((int) number_threads)
5170#endif
5171 for (y=poly_extent.y1; y <= poly_extent.y2; y++)
5172 {
5173 const int
5174 id = GetOpenMPThreadId();
5175
5176 Quantum
5177 *magick_restrict q;
5178
5179 ssize_t
5180 x;
5181
5182 if (status == MagickFalse)
5183 continue;
5184 q=GetCacheViewAuthenticPixels(image_view,poly_extent.x1,y,(size_t)
5185 (poly_extent.x2-poly_extent.x1+1),1,exception);
5186 if (q == (Quantum *) NULL)
5187 {
5188 status=MagickFalse;
5189 continue;
5190 }
5191 for (x=poly_extent.x1; x <= poly_extent.x2; x++)
5192 {
5193 double
5194 fill_alpha,
5195 stroke_alpha;
5196
5197 PixelInfo
5198 fill_color,
5199 stroke_color;
5200
5201 /*
5202 Fill and/or stroke.
5203 */
5204 fill_alpha=GetFillAlpha(polygon_info[id],mid,fill,draw_info->fill_rule,
5205 x,y,&stroke_alpha);
5206 if (draw_info->stroke_antialias == MagickFalse)
5207 {
5208 fill_alpha=fill_alpha >= AntialiasThreshold ? 1.0 : 0.0;
5209 stroke_alpha=stroke_alpha >= AntialiasThreshold ? 1.0 : 0.0;
5210 }
5211 GetFillColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&fill_color,
5212 exception);
5213 CompositePixelOver(image,&fill_color,fill_alpha*fill_color.alpha,q,
5214 (double) GetPixelAlpha(image,q),q);
5215 GetStrokeColor(draw_info,x-poly_extent.x1,y-poly_extent.y1,&stroke_color,
5216 exception);
5217 CompositePixelOver(image,&stroke_color,stroke_alpha*stroke_color.alpha,q,
5218 (double) GetPixelAlpha(image,q),q);
5219 q+=(ptrdiff_t) GetPixelChannels(image);
5220 }
5221 if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
5222 status=MagickFalse;
5223 }
5224 image_view=DestroyCacheView(image_view);
5225 polygon_info=DestroyPolygonTLS(polygon_info);
5226 if (draw_info->debug != MagickFalse)
5227 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-polygon");
5228 return(status);
5229}
5230␌
5231/*
5232%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5233% %
5234% %
5235% %
5236% D r a w P r i m i t i v e %
5237% %
5238% %
5239% %
5240%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5241%
5242% DrawPrimitive() draws a primitive (line, rectangle, ellipse) on the image.
5243%
5244% The format of the DrawPrimitive method is:
5245%
5246% MagickBooleanType DrawPrimitive(Image *image,const DrawInfo *draw_info,
5247% PrimitiveInfo *primitive_info,ExceptionInfo *exception)
5248%
5249% A description of each parameter follows:
5250%
5251% o image: the image.
5252%
5253% o draw_info: the draw info.
5254%
5255% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5256%
5257% o exception: return any errors or warnings in this structure.
5258%
5259*/
5260static void LogPrimitiveInfo(const PrimitiveInfo *primitive_info)
5261{
5262 const char
5263 *methods[] =
5264 {
5265 "point",
5266 "replace",
5267 "floodfill",
5268 "filltoborder",
5269 "reset",
5270 "?"
5271 };
5272
5273 PointInfo
5274 p,
5275 point,
5276 q;
5277
5278 ssize_t
5279 i,
5280 x;
5281
5282 ssize_t
5283 coordinates,
5284 y;
5285
5286 x=CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5));
5287 y=CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5));
5288 switch (primitive_info->primitive)
5289 {
5290 case AlphaPrimitive:
5291 {
5292 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5293 "AlphaPrimitive %.20g,%.20g %s",(double) x,(double) y,
5294 methods[primitive_info->method]);
5295 return;
5296 }
5297 case ColorPrimitive:
5298 {
5299 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5300 "ColorPrimitive %.20g,%.20g %s",(double) x,(double) y,
5301 methods[primitive_info->method]);
5302 return;
5303 }
5304 case ImagePrimitive:
5305 {
5306 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5307 "ImagePrimitive %.20g,%.20g",(double) x,(double) y);
5308 return;
5309 }
5310 case PointPrimitive:
5311 {
5312 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5313 "PointPrimitive %.20g,%.20g %s",(double) x,(double) y,
5314 methods[primitive_info->method]);
5315 return;
5316 }
5317 case TextPrimitive:
5318 {
5319 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5320 "TextPrimitive %.20g,%.20g",(double) x,(double) y);
5321 return;
5322 }
5323 default:
5324 break;
5325 }
5326 coordinates=0;
5327 p=primitive_info[0].point;
5328 q.x=(-1.0);
5329 q.y=(-1.0);
5330 for (i=0; primitive_info[i].primitive != UndefinedPrimitive; i++)
5331 {
5332 point=primitive_info[i].point;
5333 if (coordinates <= 0)
5334 {
5335 coordinates=(ssize_t) primitive_info[i].coordinates;
5336 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5337 " begin open (%.20g)",(double) coordinates);
5338 p=point;
5339 }
5340 point=primitive_info[i].point;
5341 if ((fabs(q.x-point.x) >= MagickEpsilon) ||
5342 (fabs(q.y-point.y) >= MagickEpsilon))
5343 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5344 " %.20g: %.18g,%.18g",(double) coordinates,point.x,point.y);
5345 else
5346 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5347 " %.20g: %g %g (duplicate)",(double) coordinates,point.x,point.y);
5348 q=point;
5349 coordinates--;
5350 if (coordinates > 0)
5351 continue;
5352 if ((fabs(p.x-point.x) >= MagickEpsilon) ||
5353 (fabs(p.y-point.y) >= MagickEpsilon))
5354 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end last (%.20g)",
5355 (double) coordinates);
5356 else
5357 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end open (%.20g)",
5358 (double) coordinates);
5359 }
5360}
5361
5362MagickExport MagickBooleanType DrawPrimitive(Image *image,
5363 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5364 ExceptionInfo *exception)
5365{
5366 CacheView
5367 *image_view;
5368
5369 MagickStatusType
5370 status;
5371
5372 ssize_t
5373 i,
5374 x;
5375
5376 ssize_t
5377 y;
5378
5379 if (draw_info->debug != MagickFalse)
5380 {
5381 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5382 " begin draw-primitive");
5383 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5384 " affine: %g,%g,%g,%g,%g,%g",draw_info->affine.sx,
5385 draw_info->affine.rx,draw_info->affine.ry,draw_info->affine.sy,
5386 draw_info->affine.tx,draw_info->affine.ty);
5387 }
5388 status=MagickTrue;
5389 if ((IsGrayColorspace(image->colorspace) != MagickFalse) &&
5390 ((IsPixelInfoGray(&draw_info->fill) == MagickFalse) ||
5391 (IsPixelInfoGray(&draw_info->stroke) == MagickFalse)))
5392 status&=(MagickStatusType) SetImageColorspace(image,sRGBColorspace,
5393 exception);
5394 if (draw_info->compliance == SVGCompliance)
5395 {
5396 status&=(MagickStatusType) SetImageMask(image,WritePixelMask,
5397 draw_info->clipping_mask,exception);
5398 status&=(MagickStatusType) SetImageMask(image,CompositePixelMask,
5399 draw_info->composite_mask,exception);
5400 }
5401 x=CastDoubleToSsizeT(ceil(primitive_info->point.x-0.5));
5402 y=CastDoubleToSsizeT(ceil(primitive_info->point.y-0.5));
5403 image_view=AcquireAuthenticCacheView(image,exception);
5404 switch (primitive_info->primitive)
5405 {
5406 case AlphaPrimitive:
5407 {
5408 if ((image->alpha_trait & BlendPixelTrait) == 0)
5409 status&=(MagickStatusType) SetImageAlphaChannel(image,
5410 OpaqueAlphaChannel,exception);
5411 switch (primitive_info->method)
5412 {
5413 case PointMethod:
5414 default:
5415 {
5416 PixelInfo
5417 pixel;
5418
5419 Quantum
5420 *q;
5421
5422 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5423 if (q == (Quantum *) NULL)
5424 break;
5425 GetFillColor(draw_info,x,y,&pixel,exception);
5426 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5427 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5428 exception);
5429 break;
5430 }
5431 case ReplaceMethod:
5432 {
5433 PixelInfo
5434 pixel,
5435 target;
5436
5437 status&=(MagickStatusType) GetOneCacheViewVirtualPixelInfo(image_view,
5438 x,y,&target,exception);
5439 GetPixelInfo(image,&pixel);
5440 for (y=0; y < (ssize_t) image->rows; y++)
5441 {
5442 Quantum
5443 *magick_restrict q;
5444
5445 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5446 exception);
5447 if (q == (Quantum *) NULL)
5448 break;
5449 for (x=0; x < (ssize_t) image->columns; x++)
5450 {
5451 GetPixelInfoPixel(image,q,&pixel);
5452 if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5453 {
5454 q+=(ptrdiff_t) GetPixelChannels(image);
5455 continue;
5456 }
5457 GetFillColor(draw_info,x,y,&pixel,exception);
5458 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5459 q+=(ptrdiff_t) GetPixelChannels(image);
5460 }
5461 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5462 exception);
5463 if (status == MagickFalse)
5464 break;
5465 }
5466 break;
5467 }
5468 case FloodfillMethod:
5469 case FillToBorderMethod:
5470 {
5471 ChannelType
5472 channel_mask;
5473
5474 PixelInfo
5475 target;
5476
5477 status&=(MagickStatusType) GetOneVirtualPixelInfo(image,
5478 TileVirtualPixelMethod,x,y,&target,exception);
5479 if (primitive_info->method == FillToBorderMethod)
5480 {
5481 target.red=(double) draw_info->border_color.red;
5482 target.green=(double) draw_info->border_color.green;
5483 target.blue=(double) draw_info->border_color.blue;
5484 }
5485 channel_mask=SetImageChannelMask(image,AlphaChannel);
5486 status&=(MagickStatusType) FloodfillPaintImage(image,draw_info,
5487 &target,x,y,primitive_info->method == FloodfillMethod ?
5488 MagickFalse : MagickTrue,exception);
5489 (void) SetImageChannelMask(image,channel_mask);
5490 break;
5491 }
5492 case ResetMethod:
5493 {
5494 PixelInfo
5495 pixel;
5496
5497 for (y=0; y < (ssize_t) image->rows; y++)
5498 {
5499 Quantum
5500 *magick_restrict q;
5501
5502 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5503 exception);
5504 if (q == (Quantum *) NULL)
5505 break;
5506 for (x=0; x < (ssize_t) image->columns; x++)
5507 {
5508 GetFillColor(draw_info,x,y,&pixel,exception);
5509 SetPixelAlpha(image,ClampToQuantum(pixel.alpha),q);
5510 q+=(ptrdiff_t) GetPixelChannels(image);
5511 }
5512 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5513 exception);
5514 if (status == MagickFalse)
5515 break;
5516 }
5517 break;
5518 }
5519 }
5520 break;
5521 }
5522 case ColorPrimitive:
5523 {
5524 switch (primitive_info->method)
5525 {
5526 case PointMethod:
5527 default:
5528 {
5529 PixelInfo
5530 pixel;
5531
5532 Quantum
5533 *q;
5534
5535 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5536 if (q == (Quantum *) NULL)
5537 break;
5538 GetPixelInfo(image,&pixel);
5539 GetFillColor(draw_info,x,y,&pixel,exception);
5540 SetPixelViaPixelInfo(image,&pixel,q);
5541 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5542 exception);
5543 break;
5544 }
5545 case ReplaceMethod:
5546 {
5547 PixelInfo
5548 pixel,
5549 target;
5550
5551 status&=(MagickStatusType) GetOneCacheViewVirtualPixelInfo(image_view,
5552 x,y,&target,exception);
5553 for (y=0; y < (ssize_t) image->rows; y++)
5554 {
5555 Quantum
5556 *magick_restrict q;
5557
5558 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5559 exception);
5560 if (q == (Quantum *) NULL)
5561 break;
5562 for (x=0; x < (ssize_t) image->columns; x++)
5563 {
5564 GetPixelInfoPixel(image,q,&pixel);
5565 if (IsFuzzyEquivalencePixelInfo(&pixel,&target) == MagickFalse)
5566 {
5567 q+=(ptrdiff_t) GetPixelChannels(image);
5568 continue;
5569 }
5570 GetFillColor(draw_info,x,y,&pixel,exception);
5571 SetPixelViaPixelInfo(image,&pixel,q);
5572 q+=(ptrdiff_t) GetPixelChannels(image);
5573 }
5574 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5575 exception);
5576 if (status == MagickFalse)
5577 break;
5578 }
5579 break;
5580 }
5581 case FloodfillMethod:
5582 case FillToBorderMethod:
5583 {
5584 PixelInfo
5585 target;
5586
5587 status&=(MagickStatusType) GetOneVirtualPixelInfo(image,
5588 TileVirtualPixelMethod,x,y,&target,exception);
5589 if (primitive_info->method == FillToBorderMethod)
5590 {
5591 target.red=(double) draw_info->border_color.red;
5592 target.green=(double) draw_info->border_color.green;
5593 target.blue=(double) draw_info->border_color.blue;
5594 }
5595 status&=(MagickStatusType) FloodfillPaintImage(image,draw_info,
5596 &target,x,y,primitive_info->method == FloodfillMethod ?
5597 MagickFalse : MagickTrue,exception);
5598 break;
5599 }
5600 case ResetMethod:
5601 {
5602 PixelInfo
5603 pixel;
5604
5605 GetPixelInfo(image,&pixel);
5606 for (y=0; y < (ssize_t) image->rows; y++)
5607 {
5608 Quantum
5609 *magick_restrict q;
5610
5611 q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,
5612 exception);
5613 if (q == (Quantum *) NULL)
5614 break;
5615 for (x=0; x < (ssize_t) image->columns; x++)
5616 {
5617 GetFillColor(draw_info,x,y,&pixel,exception);
5618 SetPixelViaPixelInfo(image,&pixel,q);
5619 q+=(ptrdiff_t) GetPixelChannels(image);
5620 }
5621 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5622 exception);
5623 if (status == MagickFalse)
5624 break;
5625 }
5626 break;
5627 }
5628 }
5629 break;
5630 }
5631 case ImagePrimitive:
5632 {
5633 AffineMatrix
5634 affine;
5635
5636 char
5637 composite_geometry[MagickPathExtent];
5638
5639 Image
5640 *composite_image,
5641 *composite_images;
5642
5643 ImageInfo
5644 *clone_info;
5645
5646 RectangleInfo
5647 geometry;
5648
5649 ssize_t
5650 x1,
5651 y1;
5652
5653 if (primitive_info->text == (char *) NULL)
5654 break;
5655 clone_info=AcquireImageInfo();
5656 composite_images=(Image *) NULL;
5657 if (LocaleNCompare(primitive_info->text,"data:",5) == 0)
5658 composite_images=ReadInlineImage(clone_info,primitive_info->text,
5659 exception);
5660 else
5661 if (*primitive_info->text != '\0')
5662 {
5663 /*
5664 Read composite image.
5665 */
5666 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5667 MagickPathExtent);
5668 (void) SetImageInfo(clone_info,1,exception);
5669 (void) CopyMagickString(clone_info->filename,primitive_info->text,
5670 MagickPathExtent);
5671 if (clone_info->size != (char *) NULL)
5672 clone_info->size=DestroyString(clone_info->size);
5673 if (clone_info->extract != (char *) NULL)
5674 clone_info->extract=DestroyString(clone_info->extract);
5675 if ((LocaleCompare(clone_info->magick,"ftp") != 0) &&
5676 (LocaleCompare(clone_info->magick,"http") != 0) &&
5677 (LocaleCompare(clone_info->magick,"https") != 0) &&
5678 (LocaleCompare(clone_info->magick,"mvg") != 0) &&
5679 (LocaleCompare(clone_info->magick,"vid") != 0))
5680 composite_images=ReadImage(clone_info,exception);
5681 else
5682 (void) ThrowMagickException(exception,GetMagickModule(),
5683 FileOpenError,"UnableToOpenFile","`%s'",clone_info->filename);
5684 }
5685 clone_info=DestroyImageInfo(clone_info);
5686 if (composite_images == (Image *) NULL)
5687 {
5688 status=MagickFalse;
5689 break;
5690 }
5691 composite_image=RemoveFirstImageFromList(&composite_images);
5692 composite_images=DestroyImageList(composite_images);
5693 (void) SetImageProgressMonitor(composite_image,(MagickProgressMonitor)
5694 NULL,(void *) NULL);
5695 x1=CastDoubleToSsizeT(ceil(primitive_info[1].point.x-0.5));
5696 y1=CastDoubleToSsizeT(ceil(primitive_info[1].point.y-0.5));
5697 if (((x1 != 0L) && (x1 != (ssize_t) composite_image->columns)) ||
5698 ((y1 != 0L) && (y1 != (ssize_t) composite_image->rows)))
5699 {
5700 /*
5701 Resize image.
5702 */
5703 (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5704 "%gx%g!",primitive_info[1].point.x,primitive_info[1].point.y);
5705 composite_image->filter=image->filter;
5706 status&=(MagickStatusType) TransformImage(&composite_image,
5707 (char *) NULL,composite_geometry,exception);
5708 }
5709 if (composite_image->alpha_trait == UndefinedPixelTrait)
5710 status&=(MagickStatusType) SetImageAlphaChannel(composite_image,
5711 OpaqueAlphaChannel,exception);
5712 if (draw_info->alpha != OpaqueAlpha)
5713 status&=(MagickStatusType) SetImageAlpha(composite_image,
5714 draw_info->alpha,exception);
5715 SetGeometry(image,&geometry);
5716 image->gravity=draw_info->gravity;
5717 geometry.x=x;
5718 geometry.y=y;
5719 (void) FormatLocaleString(composite_geometry,MagickPathExtent,
5720 "%.20gx%.20g%+.20g%+.20g",(double) composite_image->columns,(double)
5721 composite_image->rows,(double) geometry.x,(double) geometry.y);
5722 (void) ParseGravityGeometry(image,composite_geometry,&geometry,exception);
5723 affine=draw_info->affine;
5724 affine.tx=(double) geometry.x;
5725 affine.ty=(double) geometry.y;
5726 composite_image->interpolate=image->interpolate;
5727 if ((draw_info->compose == OverCompositeOp) ||
5728 (draw_info->compose == SrcOverCompositeOp))
5729 status&=(MagickStatusType) DrawAffineImage(image,composite_image,
5730 &affine,exception);
5731 else
5732 status&=(MagickStatusType) CompositeImage(image,composite_image,
5733 draw_info->compose,MagickTrue,geometry.x,geometry.y,exception);
5734 composite_image=DestroyImage(composite_image);
5735 break;
5736 }
5737 case PointPrimitive:
5738 {
5739 PixelInfo
5740 fill_color;
5741
5742 Quantum
5743 *q;
5744
5745 if ((y < 0) || (y >= (ssize_t) image->rows))
5746 break;
5747 if ((x < 0) || (x >= (ssize_t) image->columns))
5748 break;
5749 q=GetCacheViewAuthenticPixels(image_view,x,y,1,1,exception);
5750 if (q == (Quantum *) NULL)
5751 break;
5752 GetFillColor(draw_info,x,y,&fill_color,exception);
5753 CompositePixelOver(image,&fill_color,(double) fill_color.alpha,q,(double)
5754 GetPixelAlpha(image,q),q);
5755 status&=(MagickStatusType) SyncCacheViewAuthenticPixels(image_view,
5756 exception);
5757 break;
5758 }
5759 case TextPrimitive:
5760 {
5761 char
5762 geometry[MagickPathExtent];
5763
5764 DrawInfo
5765 *clone_info;
5766
5767 if (primitive_info->text == (char *) NULL)
5768 break;
5769 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5770 (void) CloneString(&clone_info->text,primitive_info->text);
5771 (void) FormatLocaleString(geometry,MagickPathExtent,"%+f%+f",
5772 primitive_info->point.x,primitive_info->point.y);
5773 (void) CloneString(&clone_info->geometry,geometry);
5774 status&=(MagickStatusType) AnnotateImage(image,clone_info,exception);
5775 clone_info=DestroyDrawInfo(clone_info);
5776 break;
5777 }
5778 default:
5779 {
5780 double
5781 mid,
5782 scale;
5783
5784 DrawInfo
5785 *clone_info;
5786
5787 if (IsEventLogging() != MagickFalse)
5788 LogPrimitiveInfo(primitive_info);
5789 scale=ExpandAffine(&draw_info->affine);
5790 if ((draw_info->dash_pattern != (double *) NULL) &&
5791 (fabs(draw_info->dash_pattern[0]) >= MagickEpsilon) &&
5792 (fabs(scale*draw_info->stroke_width) >= MagickEpsilon) &&
5793 (draw_info->stroke.alpha != (double) TransparentAlpha))
5794 {
5795 /*
5796 Draw dash polygon.
5797 */
5798 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5799 clone_info->stroke_width=0.0;
5800 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5801 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5802 primitive_info,exception);
5803 clone_info=DestroyDrawInfo(clone_info);
5804 if (status != MagickFalse)
5805 status&=(MagickStatusType) DrawDashPolygon(draw_info,primitive_info,
5806 image,exception);
5807 break;
5808 }
5809 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
5810 if ((mid > 1.0) &&
5811 ((draw_info->stroke.alpha != (double) TransparentAlpha) ||
5812 (draw_info->stroke_pattern != (Image *) NULL)))
5813 {
5814 double
5815 point_x,
5816 point_y;
5817
5818 MagickBooleanType
5819 closed_path;
5820
5821 /*
5822 Draw strokes while respecting line cap/join attributes.
5823 */
5824 closed_path=primitive_info[0].closed_subpath;
5825 i=(ssize_t) primitive_info[0].coordinates;
5826 point_x=fabs(primitive_info[i-1].point.x-primitive_info[0].point.x);
5827 point_y=fabs(primitive_info[i-1].point.y-primitive_info[0].point.y);
5828 if ((point_x < MagickEpsilon) && (point_y < MagickEpsilon))
5829 closed_path=MagickTrue;
5830 if ((((draw_info->linecap == RoundCap) ||
5831 (closed_path != MagickFalse)) &&
5832 (draw_info->linejoin == RoundJoin)) ||
5833 (primitive_info[i].primitive != UndefinedPrimitive))
5834 {
5835 status&=(MagickStatusType) DrawPolygonPrimitive(image,draw_info,
5836 primitive_info,exception);
5837 break;
5838 }
5839 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5840 clone_info->stroke_width=0.0;
5841 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5842 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5843 primitive_info,exception);
5844 clone_info=DestroyDrawInfo(clone_info);
5845 if (status != MagickFalse)
5846 status&=(MagickStatusType) DrawStrokePolygon(image,draw_info,
5847 primitive_info,exception);
5848 break;
5849 }
5850 status&=(MagickStatusType) DrawPolygonPrimitive(image,draw_info,
5851 primitive_info,exception);
5852 break;
5853 }
5854 }
5855 image_view=DestroyCacheView(image_view);
5856 if (draw_info->compliance == SVGCompliance)
5857 {
5858 status&=(MagickStatusType) SetImageMask(image,WritePixelMask,
5859 (Image *) NULL,exception);
5860 status&=(MagickStatusType) SetImageMask(image,CompositePixelMask,
5861 (Image *) NULL,exception);
5862 }
5863 if (draw_info->debug != MagickFalse)
5864 (void) LogMagickEvent(DrawEvent,GetMagickModule()," end draw-primitive");
5865 return(status != 0 ? MagickTrue : MagickFalse);
5866}
5867␌
5868/*
5869%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5870% %
5871% %
5872% %
5873+ D r a w S t r o k e P o l y g o n %
5874% %
5875% %
5876% %
5877%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5878%
5879% DrawStrokePolygon() draws a stroked polygon (line, rectangle, ellipse) on
5880% the image while respecting the line cap and join attributes.
5881%
5882% The format of the DrawStrokePolygon method is:
5883%
5884% MagickBooleanType DrawStrokePolygon(Image *image,
5885% const DrawInfo *draw_info,const PrimitiveInfo *primitive_info)
5886%
5887% A description of each parameter follows:
5888%
5889% o image: the image.
5890%
5891% o draw_info: the draw info.
5892%
5893% o primitive_info: Specifies a pointer to a PrimitiveInfo structure.
5894%
5895%
5896*/
5897
5898static MagickBooleanType DrawRoundLinecap(Image *image,
5899 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5900 ExceptionInfo *exception)
5901{
5902 PrimitiveInfo
5903 linecap[5];
5904
5905 ssize_t
5906 i;
5907
5908 for (i=0; i < 4; i++)
5909 linecap[i]=(*primitive_info);
5910 linecap[0].coordinates=4;
5911 linecap[1].point.x+=2.0*MagickEpsilon;
5912 linecap[2].point.x+=2.0*MagickEpsilon;
5913 linecap[2].point.y+=2.0*MagickEpsilon;
5914 linecap[3].point.y+=2.0*MagickEpsilon;
5915 linecap[4].primitive=UndefinedPrimitive;
5916 return(DrawPolygonPrimitive(image,draw_info,linecap,exception));
5917}
5918
5919static MagickBooleanType DrawStrokePolygon(Image *image,
5920 const DrawInfo *draw_info,const PrimitiveInfo *primitive_info,
5921 ExceptionInfo *exception)
5922{
5923 DrawInfo
5924 *clone_info;
5925
5926 MagickBooleanType
5927 closed_path;
5928
5929 MagickStatusType
5930 status;
5931
5932 PrimitiveInfo
5933 *stroke_polygon;
5934
5935 const PrimitiveInfo
5936 *p,
5937 *q;
5938
5939 /*
5940 Draw stroked polygon.
5941 */
5942 if (draw_info->debug != MagickFalse)
5943 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5944 " begin draw-stroke-polygon");
5945 clone_info=CloneDrawInfo((ImageInfo *) NULL,draw_info);
5946 clone_info->fill=draw_info->stroke;
5947 if (clone_info->fill_pattern != (Image *) NULL)
5948 clone_info->fill_pattern=DestroyImage(clone_info->fill_pattern);
5949 if (clone_info->stroke_pattern != (Image *) NULL)
5950 clone_info->fill_pattern=CloneImage(clone_info->stroke_pattern,0,0,
5951 MagickTrue,exception);
5952 clone_info->stroke.alpha=(MagickRealType) TransparentAlpha;
5953 clone_info->stroke_width=0.0;
5954 clone_info->fill_rule=NonZeroRule;
5955 status=MagickTrue;
5956 for (p=primitive_info; p->primitive != UndefinedPrimitive; p+=(ptrdiff_t) p->coordinates)
5957 {
5958 if (p->coordinates == 1)
5959 continue;
5960 stroke_polygon=TraceStrokePolygon(draw_info,p,exception);
5961 if (stroke_polygon == (PrimitiveInfo *) NULL)
5962 {
5963 status=0;
5964 break;
5965 }
5966 status&=(MagickStatusType) DrawPolygonPrimitive(image,clone_info,
5967 stroke_polygon,exception);
5968 stroke_polygon=(PrimitiveInfo *) RelinquishMagickMemory(stroke_polygon);
5969 if (status == 0)
5970 break;
5971 q=p+p->coordinates-1;
5972 closed_path=p->closed_subpath;
5973 if ((draw_info->linecap == RoundCap) && (closed_path == MagickFalse))
5974 {
5975 status&=(MagickStatusType) DrawRoundLinecap(image,draw_info,p,
5976 exception);
5977 status&=(MagickStatusType) DrawRoundLinecap(image,draw_info,q,
5978 exception);
5979 }
5980 }
5981 clone_info=DestroyDrawInfo(clone_info);
5982 if (draw_info->debug != MagickFalse)
5983 (void) LogMagickEvent(DrawEvent,GetMagickModule(),
5984 " end draw-stroke-polygon");
5985 return(status != 0 ? MagickTrue : MagickFalse);
5986}
5987␌
5988/*
5989%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5990% %
5991% %
5992% %
5993% G e t A f f i n e M a t r i x %
5994% %
5995% %
5996% %
5997%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
5998%
5999% GetAffineMatrix() returns an AffineMatrix initialized to the identity
6000% matrix.
6001%
6002% The format of the GetAffineMatrix method is:
6003%
6004% void GetAffineMatrix(AffineMatrix *affine_matrix)
6005%
6006% A description of each parameter follows:
6007%
6008% o affine_matrix: the affine matrix.
6009%
6010*/
6011MagickExport void GetAffineMatrix(AffineMatrix *affine_matrix)
6012{
6013 if (IsEventLogging() != MagickFalse)
6014 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6015 assert(affine_matrix != (AffineMatrix *) NULL);
6016 (void) memset(affine_matrix,0,sizeof(*affine_matrix));
6017 affine_matrix->sx=1.0;
6018 affine_matrix->sy=1.0;
6019}
6020␌
6021/*
6022%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6023% %
6024% %
6025% %
6026+ G e t D r a w I n f o %
6027% %
6028% %
6029% %
6030%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6031%
6032% GetDrawInfo() initializes draw_info to default values from image_info.
6033%
6034% The format of the GetDrawInfo method is:
6035%
6036% void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6037%
6038% A description of each parameter follows:
6039%
6040% o image_info: the image info..
6041%
6042% o draw_info: the draw info.
6043%
6044*/
6045MagickExport void GetDrawInfo(const ImageInfo *image_info,DrawInfo *draw_info)
6046{
6047 char
6048 *next_token;
6049
6050 const char
6051 *option;
6052
6053 ExceptionInfo
6054 *exception;
6055
6056 /*
6057 Initialize draw attributes.
6058 */
6059 assert(draw_info != (DrawInfo *) NULL);
6060 if (IsEventLogging() != MagickFalse)
6061 (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
6062 (void) memset(draw_info,0,sizeof(*draw_info));
6063 draw_info->image_info=CloneImageInfo(image_info);
6064 GetAffineMatrix(&draw_info->affine);
6065 exception=AcquireExceptionInfo();
6066 (void) QueryColorCompliance("#000F",AllCompliance,&draw_info->fill,
6067 exception);
6068 (void) QueryColorCompliance("#FFF0",AllCompliance,&draw_info->stroke,
6069 exception);
6070 draw_info->stroke_antialias=draw_info->image_info->antialias;
6071 draw_info->stroke_width=1.0;
6072 draw_info->fill_rule=EvenOddRule;
6073 draw_info->alpha=OpaqueAlpha;
6074 draw_info->fill_alpha=OpaqueAlpha;
6075 draw_info->stroke_alpha=OpaqueAlpha;
6076 draw_info->linecap=ButtCap;
6077 draw_info->linejoin=MiterJoin;
6078 draw_info->miterlimit=10;
6079 draw_info->decorate=NoDecoration;
6080 draw_info->pointsize=12.0;
6081 draw_info->undercolor.alpha=(MagickRealType) TransparentAlpha;
6082 draw_info->compose=OverCompositeOp;
6083 draw_info->render=MagickTrue;
6084 draw_info->clip_path=MagickFalse;
6085 draw_info->debug=(GetLogEventMask() & (DrawEvent | AnnotateEvent)) != 0 ?
6086 MagickTrue : MagickFalse;
6087 if (draw_info->image_info->font != (char *) NULL)
6088 draw_info->font=AcquireString(draw_info->image_info->font);
6089 if (draw_info->image_info->density != (char *) NULL)
6090 draw_info->density=AcquireString(draw_info->image_info->density);
6091 draw_info->text_antialias=draw_info->image_info->antialias;
6092 if (fabs(draw_info->image_info->pointsize) >= MagickEpsilon)
6093 draw_info->pointsize=draw_info->image_info->pointsize;
6094 draw_info->border_color=draw_info->image_info->border_color;
6095 if (draw_info->image_info->server_name != (char *) NULL)
6096 draw_info->server_name=AcquireString(draw_info->image_info->server_name);
6097 option=GetImageOption(draw_info->image_info,"direction");
6098 if (option != (const char *) NULL)
6099 draw_info->direction=(DirectionType) ParseCommandOption(
6100 MagickDirectionOptions,MagickFalse,option);
6101 else
6102 draw_info->direction=UndefinedDirection;
6103 option=GetImageOption(draw_info->image_info,"encoding");
6104 if (option != (const char *) NULL)
6105 (void) CloneString(&draw_info->encoding,option);
6106 option=GetImageOption(draw_info->image_info,"family");
6107 if (option != (const char *) NULL)
6108 (void) CloneString(&draw_info->family,option);
6109 option=GetImageOption(draw_info->image_info,"fill");
6110 if (option != (const char *) NULL)
6111 (void) QueryColorCompliance(option,AllCompliance,&draw_info->fill,
6112 exception);
6113 option=GetImageOption(draw_info->image_info,"gravity");
6114 if (option != (const char *) NULL)
6115 draw_info->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
6116 MagickFalse,option);
6117 option=GetImageOption(draw_info->image_info,"interline-spacing");
6118 if (option != (const char *) NULL)
6119 draw_info->interline_spacing=GetDrawValue(option,&next_token);
6120 option=GetImageOption(draw_info->image_info,"interword-spacing");
6121 if (option != (const char *) NULL)
6122 draw_info->interword_spacing=GetDrawValue(option,&next_token);
6123 option=GetImageOption(draw_info->image_info,"kerning");
6124 if (option != (const char *) NULL)
6125 draw_info->kerning=GetDrawValue(option,&next_token);
6126 option=GetImageOption(draw_info->image_info,"stroke");
6127 if (option != (const char *) NULL)
6128 (void) QueryColorCompliance(option,AllCompliance,&draw_info->stroke,
6129 exception);
6130 option=GetImageOption(draw_info->image_info,"strokewidth");
6131 if (option != (const char *) NULL)
6132 draw_info->stroke_width=GetDrawValue(option,&next_token);
6133 option=GetImageOption(draw_info->image_info,"style");
6134 if (option != (const char *) NULL)
6135 draw_info->style=(StyleType) ParseCommandOption(MagickStyleOptions,
6136 MagickFalse,option);
6137 option=GetImageOption(draw_info->image_info,"undercolor");
6138 if (option != (const char *) NULL)
6139 (void) QueryColorCompliance(option,AllCompliance,&draw_info->undercolor,
6140 exception);
6141 option=GetImageOption(draw_info->image_info,"weight");
6142 if (option != (const char *) NULL)
6143 {
6144 ssize_t
6145 weight;
6146
6147 weight=ParseCommandOption(MagickWeightOptions,MagickFalse,option);
6148 if (weight == -1)
6149 weight=(ssize_t) StringToUnsignedLong(option);
6150 draw_info->weight=(size_t) weight;
6151 }
6152 option=GetImageOption(draw_info->image_info,"word-break");
6153 if (option != (const char *) NULL)
6154 draw_info->word_break=(WordBreakType) ParseCommandOption(
6155 MagickWordBreakOptions,MagickFalse,option);
6156 exception=DestroyExceptionInfo(exception);
6157 draw_info->signature=MagickCoreSignature;
6158}
6159␌
6160/*
6161%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6162% %
6163% %
6164% %
6165+ P e r m u t a t e %
6166% %
6167% %
6168% %
6169%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6170%
6171% Permutate() returns the permutation of the (n,k).
6172%
6173% The format of the Permutate method is:
6174%
6175% void Permutate(ssize_t n,ssize_t k)
6176%
6177% A description of each parameter follows:
6178%
6179% o n:
6180%
6181% o k:
6182%
6183%
6184*/
6185static inline double Permutate(const ssize_t n,const ssize_t k)
6186{
6187 double
6188 r;
6189
6190 ssize_t
6191 i;
6192
6193 r=1.0;
6194 for (i=k+1; i <= n; i++)
6195 r*=i;
6196 for (i=1; i <= (n-k); i++)
6197 r/=i;
6198 return(r);
6199}
6200␌
6201/*
6202%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6203% %
6204% %
6205% %
6206+ T r a c e P r i m i t i v e %
6207% %
6208% %
6209% %
6210%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
6211%
6212% TracePrimitive is a collection of methods for generating graphic
6213% primitives such as arcs, ellipses, paths, etc.
6214%
6215*/
6216
6217static MagickBooleanType TraceArc(MVGInfo *mvg_info,const PointInfo start,
6218 const PointInfo end,const PointInfo degrees)
6219{
6220 PointInfo
6221 center,
6222 radius;
6223
6224 center.x=0.5*(end.x+start.x);
6225 center.y=0.5*(end.y+start.y);
6226 radius.x=fabs(center.x-start.x);
6227 radius.y=fabs(center.y-start.y);
6228 return(TraceEllipse(mvg_info,center,radius,degrees));
6229}
6230
6231static MagickBooleanType TraceArcPath(MVGInfo *mvg_info,const PointInfo start,
6232 const PointInfo end,const PointInfo arc,const double angle,
6233 const MagickBooleanType large_arc,const MagickBooleanType sweep)
6234{
6235 double
6236 alpha,
6237 beta,
6238 delta,
6239 factor,
6240 gamma,
6241 theta;
6242
6243 MagickStatusType
6244 status;
6245
6246 PointInfo
6247 center,
6248 points[3],
6249 radii;
6250
6251 double
6252 cosine,
6253 sine;
6254
6255 PrimitiveInfo
6256 *primitive_info;
6257
6258 PrimitiveInfo
6259 *p;
6260
6261 ssize_t
6262 i;
6263
6264 size_t
6265 arc_segments;
6266
6267 ssize_t
6268 offset;
6269
6270 offset=mvg_info->offset;
6271 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6272 primitive_info->coordinates=0;
6273 if ((fabs(start.x-end.x) < MagickEpsilon) &&
6274 (fabs(start.y-end.y) < MagickEpsilon))
6275 return(TracePoint(primitive_info,end));
6276 radii.x=fabs(arc.x);
6277 radii.y=fabs(arc.y);
6278 if ((radii.x < MagickEpsilon) || (radii.y < MagickEpsilon))
6279 return(TraceLine(primitive_info,start,end));
6280 cosine=cos(DegreesToRadians(fmod((double) angle,360.0)));
6281 sine=sin(DegreesToRadians(fmod((double) angle,360.0)));
6282 center.x=(double) (cosine*(end.x-start.x)/2+sine*(end.y-start.y)/2);
6283 center.y=(double) (cosine*(end.y-start.y)/2-sine*(end.x-start.x)/2);
6284 delta=(center.x*center.x)/(radii.x*radii.x)+(center.y*center.y)/
6285 (radii.y*radii.y);
6286 if (delta < MagickEpsilon)
6287 return(TraceLine(primitive_info,start,end));
6288 if (delta > 1.0)
6289 {
6290 radii.x*=sqrt((double) delta);
6291 radii.y*=sqrt((double) delta);
6292 }
6293 points[0].x=(double) (cosine*start.x/radii.x+sine*start.y/radii.x);
6294 points[0].y=(double) (cosine*start.y/radii.y-sine*start.x/radii.y);
6295 points[1].x=(double) (cosine*end.x/radii.x+sine*end.y/radii.x);
6296 points[1].y=(double) (cosine*end.y/radii.y-sine*end.x/radii.y);
6297 alpha=points[1].x-points[0].x;
6298 beta=points[1].y-points[0].y;
6299 if (fabs(alpha*alpha+beta*beta) < MagickEpsilon)
6300 return(TraceLine(primitive_info,start,end));
6301 factor=MagickSafeReciprocal(alpha*alpha+beta*beta)-0.25;
6302 if (factor <= 0.0)
6303 factor=0.0;
6304 else
6305 {
6306 factor=sqrt((double) factor);
6307 if (sweep == large_arc)
6308 factor=(-factor);
6309 }
6310 center.x=(double) ((points[0].x+points[1].x)/2-factor*beta);
6311 center.y=(double) ((points[0].y+points[1].y)/2+factor*alpha);
6312 alpha=atan2(points[0].y-center.y,points[0].x-center.x);
6313 theta=atan2(points[1].y-center.y,points[1].x-center.x)-alpha;
6314 if ((theta < 0.0) && (sweep != MagickFalse))
6315 theta+=2.0*MagickPI;
6316 else
6317 if ((theta > 0.0) && (sweep == MagickFalse))
6318 theta-=2.0*MagickPI;
6319 arc_segments=(size_t) CastDoubleToSsizeT(ceil(fabs((double) (theta/(0.5*
6320 MagickPI+MagickEpsilon)))));
6321 status=MagickTrue;
6322 p=primitive_info;
6323 for (i=0; i < (ssize_t) arc_segments; i++)
6324 {
6325 beta=0.5*((alpha+(i+1)*theta/arc_segments)-(alpha+i*theta/arc_segments));
6326 gamma=(8.0/3.0)*sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))*
6327 sin(fmod((double) (0.5*beta),DegreesToRadians(360.0)))/
6328 sin(fmod((double) beta,DegreesToRadians(360.0)));
6329 points[0].x=(double) (center.x+cos(fmod((double) (alpha+(double) i*theta/
6330 arc_segments),DegreesToRadians(360.0)))-gamma*sin(fmod((double) (alpha+
6331 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6332 points[0].y=(double) (center.y+sin(fmod((double) (alpha+(double) i*theta/
6333 arc_segments),DegreesToRadians(360.0)))+gamma*cos(fmod((double) (alpha+
6334 (double) i*theta/arc_segments),DegreesToRadians(360.0))));
6335 points[2].x=(double) (center.x+cos(fmod((double) (alpha+(double) (i+1)*
6336 theta/arc_segments),DegreesToRadians(360.0))));
6337 points[2].y=(double) (center.y+sin(fmod((double) (alpha+(double) (i+1)*
6338 theta/arc_segments),DegreesToRadians(360.0))));
6339 points[1].x=(double) (points[2].x+gamma*sin(fmod((double) (alpha+(double)
6340 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6341 points[1].y=(double) (points[2].y-gamma*cos(fmod((double) (alpha+(double)
6342 (i+1)*theta/arc_segments),DegreesToRadians(360.0))));
6343 p->point.x=(p == primitive_info) ? start.x : (p-1)->point.x;
6344 p->point.y=(p == primitive_info) ? start.y : (p-1)->point.y;
6345 (p+1)->point.x=(double) (cosine*radii.x*points[0].x-sine*radii.y*
6346 points[0].y);
6347 (p+1)->point.y=(double) (sine*radii.x*points[0].x+cosine*radii.y*
6348 points[0].y);
6349 (p+2)->point.x=(double) (cosine*radii.x*points[1].x-sine*radii.y*
6350 points[1].y);
6351 (p+2)->point.y=(double) (sine*radii.x*points[1].x+cosine*radii.y*
6352 points[1].y);
6353 (p+3)->point.x=(double) (cosine*radii.x*points[2].x-sine*radii.y*
6354 points[2].y);
6355 (p+3)->point.y=(double) (sine*radii.x*points[2].x+cosine*radii.y*
6356 points[2].y);
6357 if (i == (ssize_t) (arc_segments-1))
6358 (p+3)->point=end;
6359 status&=(MagickStatusType) TraceBezier(mvg_info,4);
6360 if (status == 0)
6361 break;
6362 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
6363 mvg_info->offset+=(ssize_t) p->coordinates;
6364 p+=(ptrdiff_t) p->coordinates;
6365 }
6366 if (status == 0)
6367 return(MagickFalse);
6368 mvg_info->offset=offset;
6369 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6370 primitive_info->coordinates=(size_t) (p-primitive_info);
6371 primitive_info->closed_subpath=MagickFalse;
6372 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6373 {
6374 p->primitive=primitive_info->primitive;
6375 p--;
6376 }
6377 return(MagickTrue);
6378}
6379
6380static MagickBooleanType TraceBezier(MVGInfo *mvg_info,
6381 const size_t number_coordinates)
6382{
6383 double
6384 alpha,
6385 *coefficients,
6386 weight;
6387
6388 PointInfo
6389 end,
6390 point,
6391 *points;
6392
6393 PrimitiveInfo
6394 *primitive_info;
6395
6396 PrimitiveInfo
6397 *p;
6398
6399 ssize_t
6400 i,
6401 j;
6402
6403 size_t
6404 control_points,
6405 quantum;
6406
6407 /*
6408 Allocate coefficients.
6409 */
6410 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6411 quantum=number_coordinates;
6412 for (i=0; i < (ssize_t) number_coordinates; i++)
6413 {
6414 for (j=i+1; j < (ssize_t) number_coordinates; j++)
6415 {
6416 alpha=fabs(primitive_info[j].point.x-primitive_info[i].point.x);
6417 if (alpha > (double) GetMaxMemoryRequest())
6418 {
6419 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6420 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6421 return(MagickFalse);
6422 }
6423 if (alpha > (double) quantum)
6424 quantum=(size_t) alpha;
6425 alpha=fabs(primitive_info[j].point.y-primitive_info[i].point.y);
6426 if (alpha > (double) quantum)
6427 quantum=(size_t) alpha;
6428 }
6429 }
6430 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6431 quantum=MagickMin(quantum/number_coordinates,BezierQuantum);
6432 if (quantum > (double) GetMaxMemoryRequest())
6433 {
6434 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6435 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6436 return(MagickFalse);
6437 }
6438 coefficients=(double *) AcquireQuantumMemory(number_coordinates,
6439 sizeof(*coefficients));
6440 points=(PointInfo *) AcquireQuantumMemory(quantum,number_coordinates*
6441 sizeof(*points));
6442 if ((coefficients == (double *) NULL) || (points == (PointInfo *) NULL))
6443 {
6444 if (points != (PointInfo *) NULL)
6445 points=(PointInfo *) RelinquishMagickMemory(points);
6446 if (coefficients != (double *) NULL)
6447 coefficients=(double *) RelinquishMagickMemory(coefficients);
6448 (void) ThrowMagickException(mvg_info->exception,GetMagickModule(),
6449 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
6450 return(MagickFalse);
6451 }
6452 control_points=quantum*number_coordinates;
6453 if (CheckPrimitiveExtent(mvg_info,(double) control_points+1) == MagickFalse)
6454 {
6455 points=(PointInfo *) RelinquishMagickMemory(points);
6456 coefficients=(double *) RelinquishMagickMemory(coefficients);
6457 return(MagickFalse);
6458 }
6459 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6460 /*
6461 Compute bezier points.
6462 */
6463 end=primitive_info[number_coordinates-1].point;
6464 for (i=0; i < (ssize_t) number_coordinates; i++)
6465 coefficients[i]=Permutate((ssize_t) number_coordinates-1,i);
6466 weight=0.0;
6467 for (i=0; i < (ssize_t) control_points; i++)
6468 {
6469 p=primitive_info;
6470 point.x=0.0;
6471 point.y=0.0;
6472 alpha=pow((double) (1.0-weight),(double) number_coordinates-1.0);
6473 for (j=0; j < (ssize_t) number_coordinates; j++)
6474 {
6475 point.x+=alpha*coefficients[j]*p->point.x;
6476 point.y+=alpha*coefficients[j]*p->point.y;
6477 alpha*=weight/(1.0-weight);
6478 p++;
6479 }
6480 points[i]=point;
6481 weight+=1.0/control_points;
6482 }
6483 /*
6484 Bezier curves are just short segmented polys.
6485 */
6486 p=primitive_info;
6487 for (i=0; i < (ssize_t) control_points; i++)
6488 {
6489 if (TracePoint(p,points[i]) == MagickFalse)
6490 {
6491 points=(PointInfo *) RelinquishMagickMemory(points);
6492 coefficients=(double *) RelinquishMagickMemory(coefficients);
6493 return(MagickFalse);
6494 }
6495 p+=(ptrdiff_t) p->coordinates;
6496 }
6497 if (TracePoint(p,end) == MagickFalse)
6498 {
6499 points=(PointInfo *) RelinquishMagickMemory(points);
6500 coefficients=(double *) RelinquishMagickMemory(coefficients);
6501 return(MagickFalse);
6502 }
6503 p+=(ptrdiff_t) p->coordinates;
6504 primitive_info->coordinates=(size_t) (p-primitive_info);
6505 primitive_info->closed_subpath=MagickFalse;
6506 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6507 {
6508 p->primitive=primitive_info->primitive;
6509 p--;
6510 }
6511 points=(PointInfo *) RelinquishMagickMemory(points);
6512 coefficients=(double *) RelinquishMagickMemory(coefficients);
6513 return(MagickTrue);
6514}
6515
6516static MagickBooleanType TraceCircle(MVGInfo *mvg_info,const PointInfo start,
6517 const PointInfo end)
6518{
6519 double
6520 alpha,
6521 beta,
6522 radius;
6523
6524 PointInfo
6525 offset,
6526 degrees;
6527
6528 alpha=end.x-start.x;
6529 beta=end.y-start.y;
6530 radius=hypot((double) alpha,(double) beta);
6531 offset.x=(double) radius;
6532 offset.y=(double) radius;
6533 degrees.x=0.0;
6534 degrees.y=360.0;
6535 return(TraceEllipse(mvg_info,start,offset,degrees));
6536}
6537
6538static MagickBooleanType TraceEllipse(MVGInfo *mvg_info,const PointInfo center,
6539 const PointInfo radii,const PointInfo arc)
6540{
6541 double
6542 coordinates,
6543 delta,
6544 step,
6545 x,
6546 y;
6547
6548 PointInfo
6549 angle,
6550 point;
6551
6552 PrimitiveInfo
6553 *primitive_info;
6554
6555 PrimitiveInfo
6556 *p;
6557
6558 ssize_t
6559 i;
6560
6561 /*
6562 Ellipses are just short segmented polys.
6563 */
6564 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6565 primitive_info->coordinates=0;
6566 if ((fabs(radii.x) < MagickEpsilon) || (fabs(radii.y) < MagickEpsilon))
6567 return(MagickTrue);
6568 delta=MagickSafeReciprocal(MagickMax(radii.x,radii.y));
6569 step=MagickPI/(MagickPI*MagickSafeReciprocal(delta))/8.0;
6570 angle.x=DegreesToRadians(arc.x);
6571 y=arc.y;
6572 while (y < arc.x)
6573 y+=360.0;
6574 angle.y=DegreesToRadians(y);
6575 coordinates=ceil((angle.y-angle.x)/step+1.0);
6576 if (CheckPrimitiveExtent(mvg_info,coordinates+1) == MagickFalse)
6577 return(MagickFalse);
6578 i=0;
6579 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6580 for (p=primitive_info; angle.x < angle.y; angle.x+=step)
6581 {
6582 point.x=cos(fmod(angle.x,DegreesToRadians(360.0)))*radii.x+center.x;
6583 point.y=sin(fmod(angle.x,DegreesToRadians(360.0)))*radii.y+center.y;
6584 if (i++ >= (ssize_t) coordinates)
6585 break;
6586 if (TracePoint(p,point) == MagickFalse)
6587 return(MagickFalse);
6588 p+=(ptrdiff_t) p->coordinates;
6589 }
6590 point.x=cos(fmod(angle.y,DegreesToRadians(360.0)))*radii.x+center.x;
6591 point.y=sin(fmod(angle.y,DegreesToRadians(360.0)))*radii.y+center.y;
6592 if (TracePoint(p,point) == MagickFalse)
6593 return(MagickFalse);
6594 p+=(ptrdiff_t) p->coordinates;
6595 primitive_info->coordinates=(size_t) (p-primitive_info);
6596 primitive_info->closed_subpath=MagickFalse;
6597 x=fabs(primitive_info[0].point.x-
6598 primitive_info[primitive_info->coordinates-1].point.x);
6599 y=fabs(primitive_info[0].point.y-
6600 primitive_info[primitive_info->coordinates-1].point.y);
6601 if ((x < MagickEpsilon) && (y < MagickEpsilon))
6602 primitive_info->closed_subpath=MagickTrue;
6603 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
6604 {
6605 p->primitive=primitive_info->primitive;
6606 p--;
6607 }
6608 return(MagickTrue);
6609}
6610
6611static MagickBooleanType TraceLine(PrimitiveInfo *primitive_info,
6612 const PointInfo start,const PointInfo end)
6613{
6614 if (TracePoint(primitive_info,start) == MagickFalse)
6615 return(MagickFalse);
6616 if (TracePoint(primitive_info+1,end) == MagickFalse)
6617 return(MagickFalse);
6618 (primitive_info+1)->primitive=primitive_info->primitive;
6619 primitive_info->coordinates=2;
6620 primitive_info->closed_subpath=MagickFalse;
6621 return(MagickTrue);
6622}
6623
6624static ssize_t TracePath(MVGInfo *mvg_info,const char *path,
6625 ExceptionInfo *exception)
6626{
6627 char
6628 *next_token,
6629 token[MagickPathExtent] = "";
6630
6631 const char
6632 *p;
6633
6634 double
6635 x,
6636 y;
6637
6638 int
6639 attribute,
6640 last_attribute;
6641
6642 MagickBooleanType
6643 status;
6644
6645 PointInfo
6646 end = {0.0, 0.0},
6647 points[4] = { {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0}, {0.0, 0.0} },
6648 point = {0.0, 0.0},
6649 start = {0.0, 0.0};
6650
6651 PrimitiveInfo
6652 *primitive_info;
6653
6654 PrimitiveType
6655 primitive_type;
6656
6657 PrimitiveInfo
6658 *q;
6659
6660 ssize_t
6661 i;
6662
6663 size_t
6664 number_coordinates,
6665 z_count;
6666
6667 ssize_t
6668 subpath_offset;
6669
6670 subpath_offset=mvg_info->offset;
6671 primitive_info=(*mvg_info->primitive_info)+mvg_info->offset;
6672 status=MagickTrue;
6673 attribute=0;
6674 number_coordinates=0;
6675 z_count=0;
6676 primitive_type=primitive_info->primitive;
6677 q=primitive_info;
6678 for (p=path; *p != '\0'; )
6679 {
6680 if (status == MagickFalse)
6681 break;
6682 while (isspace((int) ((unsigned char) *p)) != 0)
6683 p++;
6684 if (*p == '\0')
6685 break;
6686 last_attribute=attribute;
6687 attribute=(int) (*p++);
6688 switch (attribute)
6689 {
6690 case 'a':
6691 case 'A':
6692 {
6693 double
6694 angle = 0.0;
6695
6696 MagickBooleanType
6697 large_arc = MagickFalse,
6698 sweep = MagickFalse;
6699
6700 PointInfo
6701 arc = {0.0, 0.0};
6702
6703 /*
6704 Elliptical arc.
6705 */
6706 do
6707 {
6708 (void) GetNextToken(p,&p,MagickPathExtent,token);
6709 if (*token == ',')
6710 (void) GetNextToken(p,&p,MagickPathExtent,token);
6711 arc.x=GetDrawValue(token,&next_token);
6712 if (token == next_token)
6713 ThrowPointExpectedException(token,exception);
6714 (void) GetNextToken(p,&p,MagickPathExtent,token);
6715 if (*token == ',')
6716 (void) GetNextToken(p,&p,MagickPathExtent,token);
6717 arc.y=GetDrawValue(token,&next_token);
6718 if (token == next_token)
6719 ThrowPointExpectedException(token,exception);
6720 (void) GetNextToken(p,&p,MagickPathExtent,token);
6721 if (*token == ',')
6722 (void) GetNextToken(p,&p,MagickPathExtent,token);
6723 angle=GetDrawValue(token,&next_token);
6724 if (token == next_token)
6725 ThrowPointExpectedException(token,exception);
6726 (void) GetNextToken(p,&p,MagickPathExtent,token);
6727 if (*token == ',')
6728 (void) GetNextToken(p,&p,MagickPathExtent,token);
6729 large_arc=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6730 (void) GetNextToken(p,&p,MagickPathExtent,token);
6731 if (*token == ',')
6732 (void) GetNextToken(p,&p,MagickPathExtent,token);
6733 sweep=StringToLong(token) != 0 ? MagickTrue : MagickFalse;
6734 if (*token == ',')
6735 (void) GetNextToken(p,&p,MagickPathExtent,token);
6736 (void) GetNextToken(p,&p,MagickPathExtent,token);
6737 if (*token == ',')
6738 (void) GetNextToken(p,&p,MagickPathExtent,token);
6739 x=GetDrawValue(token,&next_token);
6740 if (token == next_token)
6741 ThrowPointExpectedException(token,exception);
6742 (void) GetNextToken(p,&p,MagickPathExtent,token);
6743 if (*token == ',')
6744 (void) GetNextToken(p,&p,MagickPathExtent,token);
6745 y=GetDrawValue(token,&next_token);
6746 if (token == next_token)
6747 ThrowPointExpectedException(token,exception);
6748 end.x=(double) (attribute == (int) 'A' ? x : point.x+x);
6749 end.y=(double) (attribute == (int) 'A' ? y : point.y+y);
6750 if (TraceArcPath(mvg_info,point,end,arc,angle,large_arc,sweep) == MagickFalse)
6751 return(-1);
6752 q=(*mvg_info->primitive_info)+mvg_info->offset;
6753 mvg_info->offset+=(ssize_t) q->coordinates;
6754 q+=(ptrdiff_t) q->coordinates;
6755 point=end;
6756 while (isspace((int) ((unsigned char) *p)) != 0)
6757 p++;
6758 if (*p == ',')
6759 p++;
6760 } while (IsPoint(p) != MagickFalse);
6761 break;
6762 }
6763 case 'c':
6764 case 'C':
6765 {
6766 /*
6767 Cubic Bézier curve.
6768 */
6769 do
6770 {
6771 points[0]=point;
6772 for (i=1; i < 4; i++)
6773 {
6774 (void) GetNextToken(p,&p,MagickPathExtent,token);
6775 if (*token == ',')
6776 (void) GetNextToken(p,&p,MagickPathExtent,token);
6777 x=GetDrawValue(token,&next_token);
6778 if (token == next_token)
6779 ThrowPointExpectedException(token,exception);
6780 (void) GetNextToken(p,&p,MagickPathExtent,token);
6781 if (*token == ',')
6782 (void) GetNextToken(p,&p,MagickPathExtent,token);
6783 y=GetDrawValue(token,&next_token);
6784 if (token == next_token)
6785 ThrowPointExpectedException(token,exception);
6786 end.x=(double) (attribute == (int) 'C' ? x : point.x+x);
6787 end.y=(double) (attribute == (int) 'C' ? y : point.y+y);
6788 points[i]=end;
6789 }
6790 for (i=0; i < 4; i++)
6791 (q+i)->point=points[i];
6792 if (TraceBezier(mvg_info,4) == MagickFalse)
6793 return(-1);
6794 q=(*mvg_info->primitive_info)+mvg_info->offset;
6795 mvg_info->offset+=(ssize_t) q->coordinates;
6796 q+=(ptrdiff_t) q->coordinates;
6797 point=end;
6798 while (isspace((int) ((unsigned char) *p)) != 0)
6799 p++;
6800 if (*p == ',')
6801 p++;
6802 } while (IsPoint(p) != MagickFalse);
6803 break;
6804 }
6805 case 'H':
6806 case 'h':
6807 {
6808 do
6809 {
6810 (void) GetNextToken(p,&p,MagickPathExtent,token);
6811 if (*token == ',')
6812 (void) GetNextToken(p,&p,MagickPathExtent,token);
6813 x=GetDrawValue(token,&next_token);
6814 if (token == next_token)
6815 ThrowPointExpectedException(token,exception);
6816 point.x=(double) (attribute == (int) 'H' ? x: point.x+x);
6817 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6818 return(-1);
6819 q=(*mvg_info->primitive_info)+mvg_info->offset;
6820 if (TracePoint(q,point) == MagickFalse)
6821 return(-1);
6822 mvg_info->offset+=(ssize_t) q->coordinates;
6823 q+=(ptrdiff_t) q->coordinates;
6824 while (isspace((int) ((unsigned char) *p)) != 0)
6825 p++;
6826 if (*p == ',')
6827 p++;
6828 } while (IsPoint(p) != MagickFalse);
6829 break;
6830 }
6831 case 'l':
6832 case 'L':
6833 {
6834 /*
6835 Line to.
6836 */
6837 do
6838 {
6839 (void) GetNextToken(p,&p,MagickPathExtent,token);
6840 if (*token == ',')
6841 (void) GetNextToken(p,&p,MagickPathExtent,token);
6842 x=GetDrawValue(token,&next_token);
6843 if (token == next_token)
6844 ThrowPointExpectedException(token,exception);
6845 (void) GetNextToken(p,&p,MagickPathExtent,token);
6846 if (*token == ',')
6847 (void) GetNextToken(p,&p,MagickPathExtent,token);
6848 y=GetDrawValue(token,&next_token);
6849 if (token == next_token)
6850 ThrowPointExpectedException(token,exception);
6851 point.x=(double) (attribute == (int) 'L' ? x : point.x+x);
6852 point.y=(double) (attribute == (int) 'L' ? y : point.y+y);
6853 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6854 return(-1);
6855 q=(*mvg_info->primitive_info)+mvg_info->offset;
6856 if (TracePoint(q,point) == MagickFalse)
6857 return(-1);
6858 mvg_info->offset+=(ssize_t) q->coordinates;
6859 q+=(ptrdiff_t) q->coordinates;
6860 while (isspace((int) ((unsigned char) *p)) != 0)
6861 p++;
6862 if (*p == ',')
6863 p++;
6864 } while (IsPoint(p) != MagickFalse);
6865 break;
6866 }
6867 case 'M':
6868 case 'm':
6869 {
6870 /*
6871 Move to.
6872 */
6873 if (mvg_info->offset != subpath_offset)
6874 {
6875 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
6876 primitive_info->coordinates=(size_t) (q-primitive_info);
6877 number_coordinates+=primitive_info->coordinates;
6878 primitive_info=q;
6879 subpath_offset=mvg_info->offset;
6880 }
6881 i=0;
6882 do
6883 {
6884 (void) GetNextToken(p,&p,MagickPathExtent,token);
6885 if (*token == ',')
6886 (void) GetNextToken(p,&p,MagickPathExtent,token);
6887 x=GetDrawValue(token,&next_token);
6888 if (token == next_token)
6889 ThrowPointExpectedException(token,exception);
6890 (void) GetNextToken(p,&p,MagickPathExtent,token);
6891 if (*token == ',')
6892 (void) GetNextToken(p,&p,MagickPathExtent,token);
6893 y=GetDrawValue(token,&next_token);
6894 if (token == next_token)
6895 ThrowPointExpectedException(token,exception);
6896 point.x=(double) (attribute == (int) 'M' ? x : point.x+x);
6897 point.y=(double) (attribute == (int) 'M' ? y : point.y+y);
6898 if (i == 0)
6899 start=point;
6900 i++;
6901 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
6902 return(-1);
6903 q=(*mvg_info->primitive_info)+mvg_info->offset;
6904 if (TracePoint(q,point) == MagickFalse)
6905 return(-1);
6906 mvg_info->offset+=(ssize_t) q->coordinates;
6907 q+=(ptrdiff_t) q->coordinates;
6908 while (isspace((int) ((unsigned char) *p)) != 0)
6909 p++;
6910 if (*p == ',')
6911 p++;
6912 } while (IsPoint(p) != MagickFalse);
6913 break;
6914 }
6915 case 'q':
6916 case 'Q':
6917 {
6918 /*
6919 Quadratic Bézier curve.
6920 */
6921 do
6922 {
6923 points[0]=point;
6924 for (i=1; i < 3; i++)
6925 {
6926 (void) GetNextToken(p,&p,MagickPathExtent,token);
6927 if (*token == ',')
6928 (void) GetNextToken(p,&p,MagickPathExtent,token);
6929 x=GetDrawValue(token,&next_token);
6930 if (token == next_token)
6931 ThrowPointExpectedException(token,exception);
6932 (void) GetNextToken(p,&p,MagickPathExtent,token);
6933 if (*token == ',')
6934 (void) GetNextToken(p,&p,MagickPathExtent,token);
6935 y=GetDrawValue(token,&next_token);
6936 if (token == next_token)
6937 ThrowPointExpectedException(token,exception);
6938 if (*p == ',')
6939 p++;
6940 end.x=(double) (attribute == (int) 'Q' ? x : point.x+x);
6941 end.y=(double) (attribute == (int) 'Q' ? y : point.y+y);
6942 points[i]=end;
6943 }
6944 for (i=0; i < 3; i++)
6945 (q+i)->point=points[i];
6946 if (TraceBezier(mvg_info,3) == MagickFalse)
6947 return(-1);
6948 q=(*mvg_info->primitive_info)+mvg_info->offset;
6949 mvg_info->offset+=(ssize_t) q->coordinates;
6950 q+=(ptrdiff_t) q->coordinates;
6951 point=end;
6952 while (isspace((int) ((unsigned char) *p)) != 0)
6953 p++;
6954 if (*p == ',')
6955 p++;
6956 } while (IsPoint(p) != MagickFalse);
6957 break;
6958 }
6959 case 's':
6960 case 'S':
6961 {
6962 /*
6963 Cubic Bézier curve.
6964 */
6965 do
6966 {
6967 points[0]=points[3];
6968 points[1].x=2.0*points[3].x-points[2].x;
6969 points[1].y=2.0*points[3].y-points[2].y;
6970 for (i=2; i < 4; i++)
6971 {
6972 (void) GetNextToken(p,&p,MagickPathExtent,token);
6973 if (*token == ',')
6974 (void) GetNextToken(p,&p,MagickPathExtent,token);
6975 x=GetDrawValue(token,&next_token);
6976 if (token == next_token)
6977 ThrowPointExpectedException(token,exception);
6978 (void) GetNextToken(p,&p,MagickPathExtent,token);
6979 if (*token == ',')
6980 (void) GetNextToken(p,&p,MagickPathExtent,token);
6981 y=GetDrawValue(token,&next_token);
6982 if (token == next_token)
6983 ThrowPointExpectedException(token,exception);
6984 if (*p == ',')
6985 p++;
6986 end.x=(double) (attribute == (int) 'S' ? x : point.x+x);
6987 end.y=(double) (attribute == (int) 'S' ? y : point.y+y);
6988 points[i]=end;
6989 }
6990 if (strchr("CcSs",last_attribute) == (char *) NULL)
6991 {
6992 points[0]=point;
6993 points[1]=point;
6994 }
6995 for (i=0; i < 4; i++)
6996 (q+i)->point=points[i];
6997 if (TraceBezier(mvg_info,4) == MagickFalse)
6998 return(-1);
6999 q=(*mvg_info->primitive_info)+mvg_info->offset;
7000 mvg_info->offset+=(ssize_t) q->coordinates;
7001 q+=(ptrdiff_t) q->coordinates;
7002 point=end;
7003 last_attribute=attribute;
7004 while (isspace((int) ((unsigned char) *p)) != 0)
7005 p++;
7006 if (*p == ',')
7007 p++;
7008 } while (IsPoint(p) != MagickFalse);
7009 break;
7010 }
7011 case 't':
7012 case 'T':
7013 {
7014 /*
7015 Quadratic Bézier curve.
7016 */
7017 do
7018 {
7019 points[0]=points[2];
7020 points[1].x=2.0*points[2].x-points[1].x;
7021 points[1].y=2.0*points[2].y-points[1].y;
7022 for (i=2; i < 3; i++)
7023 {
7024 (void) GetNextToken(p,&p,MagickPathExtent,token);
7025 if (*token == ',')
7026 (void) GetNextToken(p,&p,MagickPathExtent,token);
7027 x=GetDrawValue(token,&next_token);
7028 if (token == next_token)
7029 ThrowPointExpectedException(token,exception);
7030 (void) GetNextToken(p,&p,MagickPathExtent,token);
7031 if (*token == ',')
7032 (void) GetNextToken(p,&p,MagickPathExtent,token);
7033 y=GetDrawValue(token,&next_token);
7034 if (token == next_token)
7035 ThrowPointExpectedException(token,exception);
7036 end.x=(double) (attribute == (int) 'T' ? x : point.x+x);
7037 end.y=(double) (attribute == (int) 'T' ? y : point.y+y);
7038 points[i]=end;
7039 }
7040 if (status == MagickFalse)
7041 break;
7042 if (strchr("QqTt",last_attribute) == (char *) NULL)
7043 {
7044 points[0]=point;
7045 points[1]=point;
7046 }
7047 for (i=0; i < 3; i++)
7048 (q+i)->point=points[i];
7049 if (TraceBezier(mvg_info,3) == MagickFalse)
7050 return(-1);
7051 q=(*mvg_info->primitive_info)+mvg_info->offset;
7052 mvg_info->offset+=(ssize_t) q->coordinates;
7053 q+=(ptrdiff_t) q->coordinates;
7054 point=end;
7055 last_attribute=attribute;
7056 while (isspace((int) ((unsigned char) *p)) != 0)
7057 p++;
7058 if (*p == ',')
7059 p++;
7060 } while (IsPoint(p) != MagickFalse);
7061 break;
7062 }
7063 case 'v':
7064 case 'V':
7065 {
7066 /*
7067 Line to.
7068 */
7069 do
7070 {
7071 (void) GetNextToken(p,&p,MagickPathExtent,token);
7072 if (*token == ',')
7073 (void) GetNextToken(p,&p,MagickPathExtent,token);
7074 y=GetDrawValue(token,&next_token);
7075 if (token == next_token)
7076 ThrowPointExpectedException(token,exception);
7077 point.y=(double) (attribute == (int) 'V' ? y : point.y+y);
7078 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7079 return(-1);
7080 q=(*mvg_info->primitive_info)+mvg_info->offset;
7081 if (TracePoint(q,point) == MagickFalse)
7082 return(-1);
7083 mvg_info->offset+=(ssize_t) q->coordinates;
7084 q+=(ptrdiff_t) q->coordinates;
7085 while (isspace((int) ((unsigned char) *p)) != 0)
7086 p++;
7087 if (*p == ',')
7088 p++;
7089 } while (IsPoint(p) != MagickFalse);
7090 break;
7091 }
7092 case 'z':
7093 case 'Z':
7094 {
7095 /*
7096 Close path.
7097 */
7098 point=start;
7099 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7100 return(-1);
7101 q=(*mvg_info->primitive_info)+mvg_info->offset;
7102 if (TracePoint(q,point) == MagickFalse)
7103 return(-1);
7104 mvg_info->offset+=(ssize_t) q->coordinates;
7105 q+=(ptrdiff_t) q->coordinates;
7106 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7107 primitive_info->coordinates=(size_t) (q-primitive_info);
7108 primitive_info->closed_subpath=MagickTrue;
7109 number_coordinates+=primitive_info->coordinates;
7110 primitive_info=q;
7111 subpath_offset=mvg_info->offset;
7112 z_count++;
7113 break;
7114 }
7115 default:
7116 {
7117 ThrowPointExpectedException(token,exception);
7118 break;
7119 }
7120 }
7121 }
7122 if (status == MagickFalse)
7123 return(-1);
7124 primitive_info=(*mvg_info->primitive_info)+subpath_offset;
7125 primitive_info->coordinates=(size_t) (q-primitive_info);
7126 number_coordinates+=primitive_info->coordinates;
7127 for (i=0; i < (ssize_t) number_coordinates; i++)
7128 {
7129 q--;
7130 q->primitive=primitive_type;
7131 if (z_count > 1)
7132 q->method=FillToBorderMethod;
7133 }
7134 q=primitive_info;
7135 return((ssize_t) number_coordinates);
7136}
7137
7138static MagickBooleanType TraceRectangle(PrimitiveInfo *primitive_info,
7139 const PointInfo start,const PointInfo end)
7140{
7141 PointInfo
7142 point;
7143
7144 PrimitiveInfo
7145 *p;
7146
7147 ssize_t
7148 i;
7149
7150 p=primitive_info;
7151 if (TracePoint(p,start) == MagickFalse)
7152 return(MagickFalse);
7153 p+=(ptrdiff_t) p->coordinates;
7154 point.x=start.x;
7155 point.y=end.y;
7156 if (TracePoint(p,point) == MagickFalse)
7157 return(MagickFalse);
7158 p+=(ptrdiff_t) p->coordinates;
7159 if (TracePoint(p,end) == MagickFalse)
7160 return(MagickFalse);
7161 p+=(ptrdiff_t) p->coordinates;
7162 point.x=end.x;
7163 point.y=start.y;
7164 if (TracePoint(p,point) == MagickFalse)
7165 return(MagickFalse);
7166 p+=(ptrdiff_t) p->coordinates;
7167 if (TracePoint(p,start) == MagickFalse)
7168 return(MagickFalse);
7169 p+=(ptrdiff_t) p->coordinates;
7170 primitive_info->coordinates=(size_t) (p-primitive_info);
7171 primitive_info->closed_subpath=MagickTrue;
7172 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7173 {
7174 p->primitive=primitive_info->primitive;
7175 p--;
7176 }
7177 return(MagickTrue);
7178}
7179
7180static MagickBooleanType TraceRoundRectangle(MVGInfo *mvg_info,
7181 const PointInfo start,const PointInfo end,PointInfo arc)
7182{
7183 PointInfo
7184 degrees,
7185 point,
7186 segment;
7187
7188 PrimitiveInfo
7189 *primitive_info;
7190
7191 PrimitiveInfo
7192 *p;
7193
7194 ssize_t
7195 i;
7196
7197 ssize_t
7198 offset;
7199
7200 offset=mvg_info->offset;
7201 segment.x=fabs(end.x-start.x);
7202 segment.y=fabs(end.y-start.y);
7203 if ((segment.x < MagickEpsilon) || (segment.y < MagickEpsilon))
7204 {
7205 (*mvg_info->primitive_info+mvg_info->offset)->coordinates=0;
7206 return(MagickTrue);
7207 }
7208 if (arc.x > (0.5*segment.x))
7209 arc.x=0.5*segment.x;
7210 if (arc.y > (0.5*segment.y))
7211 arc.y=0.5*segment.y;
7212 point.x=start.x+segment.x-arc.x;
7213 point.y=start.y+arc.y;
7214 degrees.x=270.0;
7215 degrees.y=360.0;
7216 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7217 return(MagickFalse);
7218 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7219 mvg_info->offset+=(ssize_t) p->coordinates;
7220 point.x=start.x+segment.x-arc.x;
7221 point.y=start.y+segment.y-arc.y;
7222 degrees.x=0.0;
7223 degrees.y=90.0;
7224 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7225 return(MagickFalse);
7226 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7227 mvg_info->offset+=(ssize_t) p->coordinates;
7228 point.x=start.x+arc.x;
7229 point.y=start.y+segment.y-arc.y;
7230 degrees.x=90.0;
7231 degrees.y=180.0;
7232 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7233 return(MagickFalse);
7234 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7235 mvg_info->offset+=(ssize_t) p->coordinates;
7236 point.x=start.x+arc.x;
7237 point.y=start.y+arc.y;
7238 degrees.x=180.0;
7239 degrees.y=270.0;
7240 if (TraceEllipse(mvg_info,point,arc,degrees) == MagickFalse)
7241 return(MagickFalse);
7242 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7243 mvg_info->offset+=(ssize_t) p->coordinates;
7244 if (CheckPrimitiveExtent(mvg_info,PrimitiveExtentPad) == MagickFalse)
7245 return(MagickFalse);
7246 p=(*mvg_info->primitive_info)+(ptrdiff_t) mvg_info->offset;
7247 if (TracePoint(p,(*mvg_info->primitive_info+offset)->point) == MagickFalse)
7248 return(MagickFalse);
7249 p+=(ptrdiff_t) p->coordinates;
7250 mvg_info->offset=offset;
7251 primitive_info=(*mvg_info->primitive_info)+offset;
7252 primitive_info->coordinates=(size_t) (p-primitive_info);
7253 primitive_info->closed_subpath=MagickTrue;
7254 for (i=0; i < (ssize_t) primitive_info->coordinates; i++)
7255 {
7256 p->primitive=primitive_info->primitive;
7257 p--;
7258 }
7259 return(MagickTrue);
7260}
7261
7262static MagickBooleanType TraceSquareLinecap(PrimitiveInfo *primitive_info,
7263 const size_t number_vertices,const double offset)
7264{
7265 double
7266 distance;
7267
7268 double
7269 dx,
7270 dy;
7271
7272 ssize_t
7273 i;
7274
7275 ssize_t
7276 j;
7277
7278 dx=0.0;
7279 dy=0.0;
7280 for (i=1; i < (ssize_t) number_vertices; i++)
7281 {
7282 dx=primitive_info[0].point.x-primitive_info[i].point.x;
7283 dy=primitive_info[0].point.y-primitive_info[i].point.y;
7284 if ((fabs((double) dx) >= MagickEpsilon) ||
7285 (fabs((double) dy) >= MagickEpsilon))
7286 break;
7287 }
7288 if (i == (ssize_t) number_vertices)
7289 i=(ssize_t) number_vertices-1L;
7290 distance=hypot((double) dx,(double) dy);
7291 primitive_info[0].point.x=(double) (primitive_info[i].point.x+
7292 dx*(distance+offset)/distance);
7293 primitive_info[0].point.y=(double) (primitive_info[i].point.y+
7294 dy*(distance+offset)/distance);
7295 for (j=(ssize_t) number_vertices-2; j >= 0; j--)
7296 {
7297 dx=primitive_info[number_vertices-1].point.x-primitive_info[j].point.x;
7298 dy=primitive_info[number_vertices-1].point.y-primitive_info[j].point.y;
7299 if ((fabs((double) dx) >= MagickEpsilon) ||
7300 (fabs((double) dy) >= MagickEpsilon))
7301 break;
7302 }
7303 distance=hypot((double) dx,(double) dy);
7304 primitive_info[number_vertices-1].point.x=(double) (primitive_info[j].point.x+
7305 dx*(distance+offset)/distance);
7306 primitive_info[number_vertices-1].point.y=(double) (primitive_info[j].point.y+
7307 dy*(distance+offset)/distance);
7308 return(MagickTrue);
7309}
7310
7311static PrimitiveInfo *TraceStrokePolygon(const DrawInfo *draw_info,
7312 const PrimitiveInfo *primitive_info,ExceptionInfo *exception)
7313{
7314#define MaxStrokePad (6*BezierQuantum+360)
7315#define CheckPathExtent(pad_p,pad_q) \
7316{ \
7317 if ((pad_p) > MaxBezierCoordinates) \
7318 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7319 else \
7320 if ((p+(ptrdiff_t) (pad_p)) >= (ssize_t) extent_p) \
7321 { \
7322 if (~extent_p < (pad_p)) \
7323 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7324 else \
7325 { \
7326 extent_p+=(pad_p); \
7327 stroke_p=(PointInfo *) ResizeQuantumMemory(stroke_p,extent_p+ \
7328 MaxStrokePad,sizeof(*stroke_p)); \
7329 } \
7330 } \
7331 if ((pad_q) > MaxBezierCoordinates) \
7332 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7333 else \
7334 if ((q+(ptrdiff_t) (pad_q)) >= (ssize_t) extent_q) \
7335 { \
7336 if (~extent_q < (pad_q)) \
7337 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7338 else \
7339 { \
7340 extent_q+=(pad_q); \
7341 stroke_q=(PointInfo *) ResizeQuantumMemory(stroke_q,extent_q+ \
7342 MaxStrokePad,sizeof(*stroke_q)); \
7343 } \
7344 } \
7345 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL)) \
7346 { \
7347 if (stroke_p != (PointInfo *) NULL) \
7348 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p); \
7349 if (stroke_q != (PointInfo *) NULL) \
7350 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q); \
7351 polygon_primitive=(PrimitiveInfo *) \
7352 RelinquishMagickMemory(polygon_primitive); \
7353 (void) ThrowMagickException(exception,GetMagickModule(), \
7354 ResourceLimitError,"MemoryAllocationFailed","`%s'",""); \
7355 return((PrimitiveInfo *) NULL); \
7356 } \
7357}
7358
7359 typedef struct _StrokeSegment
7360 {
7361 double
7362 p,
7363 q;
7364 } StrokeSegment;
7365
7366 double
7367 delta_theta,
7368 dot_product,
7369 mid,
7370 miterlimit;
7371
7372 MagickBooleanType
7373 closed_path;
7374
7375 PointInfo
7376 box_p[5],
7377 box_q[5],
7378 center,
7379 offset,
7380 *stroke_p,
7381 *stroke_q;
7382
7383 PrimitiveInfo
7384 *polygon_primitive,
7385 *stroke_polygon;
7386
7387 ssize_t
7388 i;
7389
7390 size_t
7391 arc_segments,
7392 extent_p,
7393 extent_q,
7394 number_vertices;
7395
7396 ssize_t
7397 j,
7398 n,
7399 p,
7400 q;
7401
7402 StrokeSegment
7403 dx = {0.0, 0.0},
7404 dy = {0.0, 0.0},
7405 inverse_slope = {0.0, 0.0},
7406 slope = {0.0, 0.0},
7407 theta = {0.0, 0.0};
7408
7409 /*
7410 Allocate paths.
7411 */
7412 number_vertices=primitive_info->coordinates;
7413 polygon_primitive=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7414 number_vertices+2UL,sizeof(*polygon_primitive));
7415 if (polygon_primitive == (PrimitiveInfo *) NULL)
7416 {
7417 (void) ThrowMagickException(exception,GetMagickModule(),
7418 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7419 return((PrimitiveInfo *) NULL);
7420 }
7421 (void) memcpy(polygon_primitive,primitive_info,(size_t) number_vertices*
7422 sizeof(*polygon_primitive));
7423 offset.x=primitive_info[number_vertices-1].point.x-primitive_info[0].point.x;
7424 offset.y=primitive_info[number_vertices-1].point.y-primitive_info[0].point.y;
7425 closed_path=(fabs(offset.x) < MagickEpsilon) &&
7426 (fabs(offset.y) < MagickEpsilon) ? MagickTrue : MagickFalse;
7427 if ((draw_info->linejoin == RoundJoin) ||
7428 ((draw_info->linejoin == MiterJoin) && (closed_path != MagickFalse)))
7429 {
7430 polygon_primitive[number_vertices]=primitive_info[1];
7431 number_vertices++;
7432 }
7433 polygon_primitive[number_vertices].primitive=UndefinedPrimitive;
7434 /*
7435 Compute the slope for the first line segment, p.
7436 */
7437 closed_path=primitive_info[0].closed_subpath;
7438 dx.p=0.0;
7439 dy.p=0.0;
7440 for (n=1; n < (ssize_t) number_vertices; n++)
7441 {
7442 dx.p=polygon_primitive[n].point.x-polygon_primitive[0].point.x;
7443 dy.p=polygon_primitive[n].point.y-polygon_primitive[0].point.y;
7444 if ((fabs(dx.p) >= MagickEpsilon) || (fabs(dy.p) >= MagickEpsilon))
7445 break;
7446 }
7447 if (n == (ssize_t) number_vertices)
7448 {
7449 if ((draw_info->linecap != RoundCap) || (closed_path != MagickFalse))
7450 {
7451 /*
7452 Zero length subpath.
7453 */
7454 stroke_polygon=(PrimitiveInfo *) AcquireCriticalMemory(
7455 sizeof(*stroke_polygon));
7456 stroke_polygon[0]=polygon_primitive[0];
7457 stroke_polygon[0].coordinates=0;
7458 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7459 polygon_primitive);
7460 return(stroke_polygon);
7461 }
7462 n=(ssize_t) number_vertices-1L;
7463 }
7464 extent_p=2*number_vertices;
7465 extent_q=2*number_vertices;
7466 stroke_p=(PointInfo *) AcquireQuantumMemory((size_t) extent_p+MaxStrokePad,
7467 sizeof(*stroke_p));
7468 stroke_q=(PointInfo *) AcquireQuantumMemory((size_t) extent_q+MaxStrokePad,
7469 sizeof(*stroke_q));
7470 if ((stroke_p == (PointInfo *) NULL) || (stroke_q == (PointInfo *) NULL))
7471 {
7472 if (stroke_p != (PointInfo *) NULL)
7473 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7474 if (stroke_q != (PointInfo *) NULL)
7475 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7476 polygon_primitive=(PrimitiveInfo *)
7477 RelinquishMagickMemory(polygon_primitive);
7478 (void) ThrowMagickException(exception,GetMagickModule(),
7479 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7480 return((PrimitiveInfo *) NULL);
7481 }
7482 slope.p=0.0;
7483 inverse_slope.p=0.0;
7484 if (fabs(dx.p) < MagickEpsilon)
7485 {
7486 if (dx.p >= 0.0)
7487 slope.p=dy.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7488 else
7489 slope.p=dy.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7490 }
7491 else
7492 if (fabs(dy.p) < MagickEpsilon)
7493 {
7494 if (dy.p >= 0.0)
7495 inverse_slope.p=dx.p < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7496 else
7497 inverse_slope.p=dx.p < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7498 }
7499 else
7500 {
7501 slope.p=dy.p/dx.p;
7502 inverse_slope.p=(-1.0*MagickSafeReciprocal(slope.p));
7503 }
7504 mid=ExpandAffine(&draw_info->affine)*draw_info->stroke_width/2.0;
7505 miterlimit=(double) (draw_info->miterlimit*draw_info->miterlimit*mid*mid);
7506 if ((draw_info->linecap == SquareCap) && (closed_path == MagickFalse))
7507 (void) TraceSquareLinecap(polygon_primitive,number_vertices,mid);
7508 offset.x=sqrt((double) (mid*mid/(inverse_slope.p*inverse_slope.p+1.0)));
7509 offset.y=(double) (offset.x*inverse_slope.p);
7510 if ((dy.p*offset.x-dx.p*offset.y) > 0.0)
7511 {
7512 box_p[0].x=polygon_primitive[0].point.x-offset.x;
7513 box_p[0].y=polygon_primitive[0].point.y-offset.x*inverse_slope.p;
7514 box_p[1].x=polygon_primitive[n].point.x-offset.x;
7515 box_p[1].y=polygon_primitive[n].point.y-offset.x*inverse_slope.p;
7516 box_q[0].x=polygon_primitive[0].point.x+offset.x;
7517 box_q[0].y=polygon_primitive[0].point.y+offset.x*inverse_slope.p;
7518 box_q[1].x=polygon_primitive[n].point.x+offset.x;
7519 box_q[1].y=polygon_primitive[n].point.y+offset.x*inverse_slope.p;
7520 }
7521 else
7522 {
7523 box_p[0].x=polygon_primitive[0].point.x+offset.x;
7524 box_p[0].y=polygon_primitive[0].point.y+offset.y;
7525 box_p[1].x=polygon_primitive[n].point.x+offset.x;
7526 box_p[1].y=polygon_primitive[n].point.y+offset.y;
7527 box_q[0].x=polygon_primitive[0].point.x-offset.x;
7528 box_q[0].y=polygon_primitive[0].point.y-offset.y;
7529 box_q[1].x=polygon_primitive[n].point.x-offset.x;
7530 box_q[1].y=polygon_primitive[n].point.y-offset.y;
7531 }
7532 /*
7533 Create strokes for the line join attribute: bevel, miter, round.
7534 */
7535 p=0;
7536 q=0;
7537 stroke_q[p++]=box_q[0];
7538 stroke_p[q++]=box_p[0];
7539 for (i=(ssize_t) n+1; i < (ssize_t) number_vertices; i++)
7540 {
7541 /*
7542 Compute the slope for this line segment, q.
7543 */
7544 dx.q=polygon_primitive[i].point.x-polygon_primitive[n].point.x;
7545 dy.q=polygon_primitive[i].point.y-polygon_primitive[n].point.y;
7546 dot_product=dx.q*dx.q+dy.q*dy.q;
7547 if (dot_product < 0.25)
7548 continue;
7549 slope.q=0.0;
7550 inverse_slope.q=0.0;
7551 if (fabs(dx.q) < MagickEpsilon)
7552 {
7553 if (dx.q >= 0.0)
7554 slope.q=dy.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7555 else
7556 slope.q=dy.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7557 }
7558 else
7559 if (fabs(dy.q) < MagickEpsilon)
7560 {
7561 if (dy.q >= 0.0)
7562 inverse_slope.q=dx.q < 0.0 ? -1.0/MagickEpsilon : 1.0/MagickEpsilon;
7563 else
7564 inverse_slope.q=dx.q < 0.0 ? 1.0/MagickEpsilon : -1.0/MagickEpsilon;
7565 }
7566 else
7567 {
7568 slope.q=dy.q/dx.q;
7569 inverse_slope.q=(-1.0*MagickSafeReciprocal(slope.q));
7570 }
7571 offset.x=sqrt((double) (mid*mid/(inverse_slope.q*inverse_slope.q+1.0)));
7572 offset.y=(double) (offset.x*inverse_slope.q);
7573 dot_product=dy.q*offset.x-dx.q*offset.y;
7574 if (dot_product > 0.0)
7575 {
7576 box_p[2].x=polygon_primitive[n].point.x-offset.x;
7577 box_p[2].y=polygon_primitive[n].point.y-offset.y;
7578 box_p[3].x=polygon_primitive[i].point.x-offset.x;
7579 box_p[3].y=polygon_primitive[i].point.y-offset.y;
7580 box_q[2].x=polygon_primitive[n].point.x+offset.x;
7581 box_q[2].y=polygon_primitive[n].point.y+offset.y;
7582 box_q[3].x=polygon_primitive[i].point.x+offset.x;
7583 box_q[3].y=polygon_primitive[i].point.y+offset.y;
7584 }
7585 else
7586 {
7587 box_p[2].x=polygon_primitive[n].point.x+offset.x;
7588 box_p[2].y=polygon_primitive[n].point.y+offset.y;
7589 box_p[3].x=polygon_primitive[i].point.x+offset.x;
7590 box_p[3].y=polygon_primitive[i].point.y+offset.y;
7591 box_q[2].x=polygon_primitive[n].point.x-offset.x;
7592 box_q[2].y=polygon_primitive[n].point.y-offset.y;
7593 box_q[3].x=polygon_primitive[i].point.x-offset.x;
7594 box_q[3].y=polygon_primitive[i].point.y-offset.y;
7595 }
7596 if (fabs((double) (slope.p-slope.q)) < MagickEpsilon)
7597 {
7598 box_p[4]=box_p[1];
7599 box_q[4]=box_q[1];
7600 }
7601 else
7602 {
7603 box_p[4].x=(double) ((slope.p*box_p[0].x-box_p[0].y-slope.q*box_p[3].x+
7604 box_p[3].y)/(slope.p-slope.q));
7605 box_p[4].y=(double) (slope.p*(box_p[4].x-box_p[0].x)+box_p[0].y);
7606 box_q[4].x=(double) ((slope.p*box_q[0].x-box_q[0].y-slope.q*box_q[3].x+
7607 box_q[3].y)/(slope.p-slope.q));
7608 box_q[4].y=(double) (slope.p*(box_q[4].x-box_q[0].x)+box_q[0].y);
7609 }
7610 DisableMSCWarning(4127)
7611 CheckPathExtent(MaxStrokePad,MaxStrokePad);
7612 RestoreMSCWarning
7613 dot_product=dx.q*dy.p-dx.p*dy.q;
7614 if (dot_product <= 0.0)
7615 switch (draw_info->linejoin)
7616 {
7617 case BevelJoin:
7618 {
7619 stroke_q[q++]=box_q[1];
7620 stroke_q[q++]=box_q[2];
7621 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7622 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7623 if (dot_product <= miterlimit)
7624 stroke_p[p++]=box_p[4];
7625 else
7626 {
7627 stroke_p[p++]=box_p[1];
7628 stroke_p[p++]=box_p[2];
7629 }
7630 break;
7631 }
7632 case MiterJoin:
7633 {
7634 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7635 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7636 if (dot_product <= miterlimit)
7637 {
7638 stroke_q[q++]=box_q[4];
7639 stroke_p[p++]=box_p[4];
7640 }
7641 else
7642 {
7643 stroke_q[q++]=box_q[1];
7644 stroke_q[q++]=box_q[2];
7645 stroke_p[p++]=box_p[1];
7646 stroke_p[p++]=box_p[2];
7647 }
7648 break;
7649 }
7650 case RoundJoin:
7651 {
7652 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7653 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7654 if (dot_product <= miterlimit)
7655 stroke_p[p++]=box_p[4];
7656 else
7657 {
7658 stroke_p[p++]=box_p[1];
7659 stroke_p[p++]=box_p[2];
7660 }
7661 center=polygon_primitive[n].point;
7662 theta.p=atan2(box_q[1].y-center.y,box_q[1].x-center.x);
7663 theta.q=atan2(box_q[2].y-center.y,box_q[2].x-center.x);
7664 if (theta.q < theta.p)
7665 theta.q+=2.0*MagickPI;
7666 arc_segments=(size_t) CastDoubleToSsizeT(ceil((double) ((theta.q-
7667 theta.p)/(2.0*sqrt(MagickSafeReciprocal(mid))))));
7668 DisableMSCWarning(4127)
7669 CheckPathExtent(MaxStrokePad,arc_segments+MaxStrokePad);
7670 RestoreMSCWarning
7671 stroke_q[q].x=box_q[1].x;
7672 stroke_q[q].y=box_q[1].y;
7673 q++;
7674 for (j=1; j < (ssize_t) arc_segments; j++)
7675 {
7676 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7677 stroke_q[q].x=(double) (center.x+mid*cos(fmod((double)
7678 (theta.p+delta_theta),DegreesToRadians(360.0))));
7679 stroke_q[q].y=(double) (center.y+mid*sin(fmod((double)
7680 (theta.p+delta_theta),DegreesToRadians(360.0))));
7681 q++;
7682 }
7683 stroke_q[q++]=box_q[2];
7684 break;
7685 }
7686 default:
7687 break;
7688 }
7689 else
7690 switch (draw_info->linejoin)
7691 {
7692 case BevelJoin:
7693 {
7694 stroke_p[p++]=box_p[1];
7695 stroke_p[p++]=box_p[2];
7696 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7697 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7698 if (dot_product <= miterlimit)
7699 stroke_q[q++]=box_q[4];
7700 else
7701 {
7702 stroke_q[q++]=box_q[1];
7703 stroke_q[q++]=box_q[2];
7704 }
7705 break;
7706 }
7707 case MiterJoin:
7708 {
7709 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7710 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7711 if (dot_product <= miterlimit)
7712 {
7713 stroke_q[q++]=box_q[4];
7714 stroke_p[p++]=box_p[4];
7715 }
7716 else
7717 {
7718 stroke_q[q++]=box_q[1];
7719 stroke_q[q++]=box_q[2];
7720 stroke_p[p++]=box_p[1];
7721 stroke_p[p++]=box_p[2];
7722 }
7723 break;
7724 }
7725 case RoundJoin:
7726 {
7727 dot_product=(box_q[4].x-box_p[4].x)*(box_q[4].x-box_p[4].x)+
7728 (box_q[4].y-box_p[4].y)*(box_q[4].y-box_p[4].y);
7729 if (dot_product <= miterlimit)
7730 stroke_q[q++]=box_q[4];
7731 else
7732 {
7733 stroke_q[q++]=box_q[1];
7734 stroke_q[q++]=box_q[2];
7735 }
7736 center=polygon_primitive[n].point;
7737 theta.p=atan2(box_p[1].y-center.y,box_p[1].x-center.x);
7738 theta.q=atan2(box_p[2].y-center.y,box_p[2].x-center.x);
7739 if (theta.p < theta.q)
7740 theta.p+=2.0*MagickPI;
7741 arc_segments=(size_t) CastDoubleToSsizeT(ceil((double) ((theta.p-
7742 theta.q)/(2.0*sqrt((double) (MagickSafeReciprocal(mid)))))));
7743 DisableMSCWarning(4127)
7744 CheckPathExtent(arc_segments+MaxStrokePad,MaxStrokePad);
7745 RestoreMSCWarning
7746 stroke_p[p++]=box_p[1];
7747 for (j=1; j < (ssize_t) arc_segments; j++)
7748 {
7749 delta_theta=(double) (j*(theta.q-theta.p)/arc_segments);
7750 stroke_p[p].x=(double) (center.x+mid*cos(fmod((double)
7751 (theta.p+delta_theta),DegreesToRadians(360.0))));
7752 stroke_p[p].y=(double) (center.y+mid*sin(fmod((double)
7753 (theta.p+delta_theta),DegreesToRadians(360.0))));
7754 p++;
7755 }
7756 stroke_p[p++]=box_p[2];
7757 break;
7758 }
7759 default:
7760 break;
7761 }
7762 slope.p=slope.q;
7763 inverse_slope.p=inverse_slope.q;
7764 box_p[0]=box_p[2];
7765 box_p[1]=box_p[3];
7766 box_q[0]=box_q[2];
7767 box_q[1]=box_q[3];
7768 dx.p=dx.q;
7769 dy.p=dy.q;
7770 n=i;
7771 }
7772 stroke_p[p++]=box_p[1];
7773 stroke_q[q++]=box_q[1];
7774 /*
7775 Trace stroked polygon.
7776 */
7777 stroke_polygon=(PrimitiveInfo *) AcquireQuantumMemory((size_t)
7778 (p+q+2L),(size_t) (closed_path+2L)*sizeof(*stroke_polygon));
7779 if (stroke_polygon == (PrimitiveInfo *) NULL)
7780 {
7781 (void) ThrowMagickException(exception,GetMagickModule(),
7782 ResourceLimitError,"MemoryAllocationFailed","`%s'","");
7783 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7784 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7785 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(
7786 polygon_primitive);
7787 return(stroke_polygon);
7788 }
7789 for (i=0; i < (ssize_t) p; i++)
7790 {
7791 stroke_polygon[i]=polygon_primitive[0];
7792 stroke_polygon[i].point=stroke_p[i];
7793 }
7794 if (closed_path != MagickFalse)
7795 {
7796 stroke_polygon[i]=polygon_primitive[0];
7797 stroke_polygon[i].point=stroke_polygon[0].point;
7798 i++;
7799 }
7800 for ( ; i < (ssize_t) (p+q+closed_path); i++)
7801 {
7802 stroke_polygon[i]=polygon_primitive[0];
7803 stroke_polygon[i].point=stroke_q[p+q+closed_path-(i+1)];
7804 }
7805 if (closed_path != MagickFalse)
7806 {
7807 stroke_polygon[i]=polygon_primitive[0];
7808 stroke_polygon[i].point=stroke_polygon[p+closed_path].point;
7809 i++;
7810 }
7811 stroke_polygon[i]=polygon_primitive[0];
7812 stroke_polygon[i].point=stroke_polygon[0].point;
7813 i++;
7814 stroke_polygon[i].primitive=UndefinedPrimitive;
7815 stroke_polygon[0].coordinates=(size_t) (p+q+2*closed_path+1);
7816 stroke_p=(PointInfo *) RelinquishMagickMemory(stroke_p);
7817 stroke_q=(PointInfo *) RelinquishMagickMemory(stroke_q);
7818 polygon_primitive=(PrimitiveInfo *) RelinquishMagickMemory(polygon_primitive);
7819 return(stroke_polygon);
7820}
_AffineMatrix
Definition geometry.h:95
_CacheView
Definition cache-view.c:66
_DrawInfo
Definition draw.h:210
_EdgeInfo
Definition draw.c:109
_ElementInfo
Definition draw.c:133
_ExceptionInfo
Definition exception.h:102
_GeometryInfo
Definition geometry.h:106
_GradientInfo
Definition draw.h:156
_ImageInfo
Definition image.h:359
_Image
Definition image.h:132
_MVGInfo
Definition draw.c:143
_PathInfo
Definition draw.c:179
_PixelInfo
Definition pixel.h:182
_PointInfo
Definition geometry.h:123
_PolygonInfo
Definition draw.c:161
_PrimitiveInfo
Definition draw.h:360
_RectangleInfo
Definition geometry.h:130
_SegmentInfo
Definition image.h:85
_SplayTreeInfo
Definition splay-tree.c:84
_StopInfo
Definition draw.h:147
_TypeMetric
Definition draw.h:381