shp_multipatch_t Struct Reference

MultiPatch. More...

#include <shp-multipatch.h>

Public Member Functions
size_t	shp_multipatch_points (const shp_multipatch_t *multipatch, size_t part_num, shp_part_type_t *part_type, size_t *start, size_t *end)
	Get the points that form a part.
void	shp_multipatch_pointz (const shp_multipatch_t *multipatch, size_t point_num, shp_pointz_t *pointz)
	Get a PointZ.

Data Fields
double	x_min
	X minimum value.
double	x_max
	X maximum value.
double	y_min
	Y minimum value.
double	y_max
	Y maximum value.
double	z_min
	Z minimum value.
double	z_max
	Z maximum value.
double	m_min
	M minimum value.
double	m_max
	M maximum value.
size_t	num_parts
	Number of parts.
size_t	num_points
	Total number of points.

Detailed Description

A MultiPatch consists of a number of surface patches. Each surface patch describes a surface. The surface patches of a MultiPatch are referred to as its parts, and the type of part controls how the order of vertices of an MultiPatch part is interpreted. See the "ESRI Shapefile Technical Description" [2] for more information.

Member Function Documentation

shp_multipatch_points()

size_t shp_multipatch_points	(	const shp_multipatch_t *	multipatch,
		size_t	part_num,
		shp_part_type_t *	part_type,
		size_t *	start,
		size_t *	end
	)

Gets the indices for the points specified by part_num.

Parameters

	multipatch	a MultiPatch.
	part_num	a zero-based part number.
[out]	part_type	the part type.
[out]	start	the range start.
[out]	end	the range end (exclusive).

Returns

the number of points in the part.

See also

shp_multipatch_pointz

shp_multipatch_pointz()

void shp_multipatch_pointz	(	const shp_multipatch_t *	multipatch,
		size_t	point_num,
		shp_pointz_t *	pointz
	)

Gets a PointZ that belongs to the edges of a MultiPatch.

Example

// Iterate over all parts and points
size_t part_num, i, n;
shp_part_type_t part_type;
shp_pointz_t pointz;
 
for (part_num = 0; part_num < multipatch->num_parts; ++part_num) {
  shp_multipatch_points(multipatch, part_num, &part_type, &i, &n);
  while (i < n) {
    shp_multipatch_pointz(multipatch, i, &pointz);
    ++i;
  }
}

Parameters

	multipatch	a MultiPatch.
	point_num	a zero-based point number.
[out]	pointz	a shp_pointz_t structure.

See also

shp_multipatch_points

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The documentation for this struct was generated from the following file:

• shp-multipatch.h