GRASS: level_two.c File Reference

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Functions
int	Vect_get_num_nodes (struct Map_info *map)
	get number of nodes
int	Vect_get_num_primitives (struct Map_info *map, int type)
	get number of primitives
int	Vect_get_num_lines (struct Map_info *map)
	get number of lines
int	Vect_get_num_areas (struct Map_info *map)
	get number of areas
int	Vect_get_num_faces (struct Map_info *map)
	get number of faces
int	Vect_get_num_islands (struct Map_info *map)
	get number of islands
int	Vect_get_num_dblinks (struct Map_info *map)
	get number of defined dblinks
int	Vect_get_num_updated_lines (struct Map_info *map)
	get number of updated lines
int	Vect_get_updated_line (struct Map_info *map, int idx)
	get updated line by index
int	Vect_get_num_updated_nodes (struct Map_info *map)
	get number of updated nodes
int	Vect_get_updated_node (struct Map_info *map, int idx)
	get updated node by index
int	Vect_get_node_coor (struct Map_info map, int num, double x, double y, double z)
	get 2D/3D coordinates of node
int	Vect_get_line_nodes (struct Map_info Map, int line, int n1, int *n2)
	get starting and ending node of line
int	Vect_get_line_areas (struct Map_info Map, int line, int left, int *right)
	get areas/isles on the left and right
int	Vect_get_node_n_lines (struct Map_info *Map, int node)
	returns number of lines for node
int	Vect_get_node_line (struct Map_info *Map, int node, int line)
	returns line number for node line index
float	Vect_get_node_line_angle (struct Map_info *Map, int node, int line)
	angle of segment of the line connected to the node
int	Vect_get_centroid_area (struct Map_info *Map, int centroid)
	returns number of area the centroid is within

Function Documentation

int Vect_get_centroid_area	(	struct Map_info *	Map,
		int	centroid
	)

returns number of area the centroid is within

Returns:: number of area the node is within, 0 for not in area, negative number of area if duplicate

Parameters:

Map_info

structure, centroid number

Definition at line 289 of file level_two.c.

int Vect_get_line_areas	(	struct Map_info *	Map,
		int	line,
		int *	left,
		int *	right
	)

get areas/isles on the left and right

Returns:: numbers of areas/isles on the left and right

Parameters:

Map_info

structure, line number, numbers of areas/isles on the left and right

Definition at line 216 of file level_two.c.

Referenced by remove_bridges(), Vect_remove_small_areas(), and Vect_select_areas_by_polygon().

int Vect_get_line_nodes	(	struct Map_info *	Map,
		int	line,
		int *	n1,
		int *	n2
	)

get starting and ending node of line

Returns:: numbers of line nodes

Parameters:

Map_info

structure, line number, numbers of line nodes

Definition at line 194 of file level_two.c.

Referenced by remove_bridges(), remove_dangles(), Vect_break_lines(), Vect_net_build_graph(), and Vect_net_nearest_nodes().

int Vect_get_node_coor	(	struct Map_info *	map,
		int	num,
		double *	x,
		double *	y,
		double *	z
	)

get 2D/3D coordinates of node

Returns:: 2D/3D coordinates of node

Parameters:

Map_info

structure, node number, xyz coordinates values

Definition at line 173 of file level_two.c.

Referenced by Vect_break_lines(), Vect_clean_small_angles_at_nodes(), and Vect_find_node().

int Vect_get_node_line	(	struct Map_info *	Map,
		int	node,
		int	line
	)

returns line number for node line index

Returns:: line number for node line index

Parameters:

	Map	vector map
	node	node number
	line	line index, range : 0 - Vect_get_node_n_lines()

Definition at line 257 of file level_two.c.

Referenced by remove_dangles(), Vect_clean_small_angles_at_nodes(), Vect_net_build_graph(), and Vect_overlay_and().

int Vect_get_node_line_angle	(	struct Map_info *	Map,
		int	node,
		int	line
	)

angle of segment of the line connected to the node

Returns:: angle of segment of the line connected to the node

Parameters:

	Map	vector map
	node	node number
	line	line index, range : 0 - Vect_get_node_n_lines()

Definition at line 274 of file level_two.c.

Referenced by Vect_clean_small_angles_at_nodes().

int Vect_get_node_n_lines	(	struct Map_info *	Map,
		int	node
	)

returns number of lines for node

Returns:: numbers of line for a node ??

Parameters:

Map_info

structure, node number

Definition at line 238 of file level_two.c.

Referenced by remove_dangles(), Vect_clean_small_angles_at_nodes(), Vect_net_build_graph(), and Vect_overlay_and().

int Vect_get_num_areas ( struct Map_info * map )

get number of areas

Returns:: number of areas

Parameters:

Map_info

structure

Definition at line 76 of file level_two.c.

Referenced by Vect_remove_small_areas(), Vect_set_varray_from_cat_list(), and Vect_set_varray_from_db().

int Vect_get_num_dblinks ( struct Map_info * map )

get number of defined dblinks

Returns:: number of dblinks

Parameters:

Map_info

structure

Definition at line 113 of file level_two.c.

Referenced by Vect_copy(), Vect_copy_tables(), Vect_delete(), Vect_get_column_names(), Vect_get_column_names_types(), Vect_get_column_types(), and Vect_rename().

int Vect_get_num_faces ( struct Map_info * map )

get number of faces

Returns:: number of faces

Parameters:

Map_info

structure

Definition at line 89 of file level_two.c.

int Vect_get_num_islands ( struct Map_info * map )

get number of islands

Returns:: number of islands

Parameters:

Map_info

structure

Definition at line 101 of file level_two.c.

int Vect_get_num_lines ( struct Map_info * map )

get number of lines

Returns:: number of lines

Parameters:

Map_info

structure

Definition at line 64 of file level_two.c.

Referenced by remove_bridges(), Vect_break_lines(), Vect_break_polygons(), Vect_build_nat(), Vect_build_partial(), Vect_copy_map_lines(), Vect_net_build_graph(), Vect_overlay_and(), Vect_remove_duplicates(), Vect_set_varray_from_cat_list(), and Vect_snap_lines().

int Vect_get_num_nodes ( struct Map_info * map )

get number of nodes

Returns:: number of nodes

Parameters:

Map_info

structure

Definition at line 31 of file level_two.c.

Referenced by remove_dangles(), Vect_clean_small_angles_at_nodes(), and Vect_net_build_graph().

int Vect_get_num_primitives	(	struct Map_info *	map,
		int	type
	)

get number of primitives

Returns:: number of primitives of given type

Parameters:

Map_info

structure

Definition at line 43 of file level_two.c.

int Vect_get_num_updated_lines ( struct Map_info * map )

get number of updated lines

Returns:: number of updated lines

Parameters:

Map_info

structure

Definition at line 125 of file level_two.c.

int Vect_get_num_updated_nodes ( struct Map_info * map )

get number of updated nodes

Returns:: number of updated nodes

Parameters:

Map_info

structure

Definition at line 149 of file level_two.c.

int Vect_get_updated_line	(	struct Map_info *	map,
		int	idx
	)

get updated line by index

Returns:: updated line

Parameters:

Map_info

structure

Definition at line 137 of file level_two.c.

int Vect_get_updated_node	(	struct Map_info *	map,
		int	idx
	)

get updated node by index

Returns:: updated node

Parameters:

Map_info

structure

Definition at line 161 of file level_two.c.

level_two.c File Reference

Functions

Function Documentation