color_look.c File Reference

#include <math.h>
#include <grass/gis.h>

Include dependency graph for color_look.c:

Go to the source code of this file.

Functions
int	G_lookup_colors (CELL *cell, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *set, int n, struct Colors *colors)
	lookup an array of colors
int	G_lookup_c_raster_colors (CELL *cell, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *set, int n, struct Colors *colors)
	The same as G_lookup_colors(cell, r, g, b, set, n, colors).
int	G_lookup_raster_colors (void *raster, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *set, int n, struct Colors *colors, RASTER_MAP_TYPE map_type)
	If the cell_type is CELL_TYPE, calls G_lookup_colors((CELL *)cell, r, g, b, set, n, colors); If the cell_type is FCELL_TYPE, calls G_lookup_f_raster_colors(FCELL *)cell, r, g, b, set, n, colors); If the cell_type is DCELL_TYPE, calls G_lookup_d_raster_colors(DCELL *)cell, r, g, b, set, n, colors);.
int	G_lookup_f_raster_colors (FCELL *fcell, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *set, int n, struct Colors *colors)
	Converts the n floating-point values in the fcell array to their r,g,b color components. Embedded NULL-values are handled properly as well.
int	G_lookup_d_raster_colors (DCELL *dcell, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *set, int n, struct Colors *colors)
	Converts the n floating-point values in the dcell array to their r,g,b color components. Embedded NULL-values are handled properly as well.
int	G__lookup_colors (void *raster, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *set, int n, struct Colors *colors, int mod, int rules_only, RASTER_MAP_TYPE data_type)
int	G__interpolate_color_rule (DCELL val, unsigned char *red, unsigned char *grn, unsigned char *blu, struct _Color_Rule_ *rule)

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Function Documentation

int G__interpolate_color_rule	(	DCELL	val,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		struct _Color_Rule_ *	rule
	)

Definition at line 457 of file color_look.c.

Referenced by G__lookup_colors().

int G__lookup_colors	(	void *	raster,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	set,
		int	n,
		struct Colors *	colors,
		int	mod,
		int	rules_only,
		RASTER_MAP_TYPE	data_type
	)

Definition at line 228 of file color_look.c.

References b, g, G__interpolate_color_rule(), G_get_default_color(), G_get_null_value_color(), G_get_raster_value_d(), G_incr_void_ptr(), G_is_null_value(), G_raster_cmp(), G_raster_size(), NULL, and r.

Referenced by G_lookup_c_raster_colors(), G_lookup_d_raster_colors(), G_lookup_f_raster_colors(), and G_lookup_raster_colors().

int G_lookup_c_raster_colors	(	CELL *	cell,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	set,
		int	n,
		struct Colors *	colors
	)

The same as G_lookup_colors(cell, r, g, b, set, n, colors).

Parameters:

	cell
	r
	g
	b
	set
	n
	colors

Returns:

int

Definition at line 78 of file color_look.c.

References G__lookup_colors(), G__organize_colors(), and G_zero().

Referenced by G_lookup_colors().

int G_lookup_colors	(	CELL *	cell,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	set,
		int	n,
		struct Colors *	colors
	)

lookup an array of colors

Modified to return a color for NULL-values.

Returns:

int

Definition at line 38 of file color_look.c.

References G_lookup_c_raster_colors().

Referenced by G_get_color().

int G_lookup_d_raster_colors	(	DCELL *	dcell,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	set,
		int	n,
		struct Colors *	colors
	)

Converts the n floating-point values in the dcell array to their r,g,b color components. Embedded NULL-values are handled properly as well.

Parameters:

	dcell
	r
	g
	b
	set
	n
	colors

Returns:

int

Definition at line 195 of file color_look.c.

References G__lookup_colors(), G__organize_colors(), and G_zero().

int G_lookup_f_raster_colors	(	FCELL *	fcell,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	set,
		int	n,
		struct Colors *	colors
	)

Converts the n floating-point values in the fcell array to their r,g,b color components. Embedded NULL-values are handled properly as well.

Parameters:

	fcell
	r
	g
	b
	set
	n
	colors

Returns:

int

Definition at line 160 of file color_look.c.

References G__lookup_colors(), G__organize_colors(), and G_zero().

int G_lookup_raster_colors	(	void *	raster,
		unsigned char *	red,
		unsigned char *	grn,
		unsigned char *	blu,
		unsigned char *	set,
		int	n,
		struct Colors *	colors,
		RASTER_MAP_TYPE	map_type
	)

If the cell_type is CELL_TYPE, calls G_lookup_colors((CELL *)cell, r, g, b, set, n, colors); If the cell_type is FCELL_TYPE, calls G_lookup_f_raster_colors(FCELL *)cell, r, g, b, set, n, colors); If the cell_type is DCELL_TYPE, calls G_lookup_d_raster_colors(DCELL *)cell, r, g, b, set, n, colors);.

Parameters:

	rast
	r
	g
	b
	set
	n
	colors
	cell_type

Returns:

int

Definition at line 120 of file color_look.c.

References G__lookup_colors(), G__organize_colors(), and G_zero().

Referenced by G_get_c_raster_color(), G_get_d_raster_color(), G_get_f_raster_color(), G_get_raster_color(), and G_get_raster_row_colors().

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