tin.c File Reference

#include <grass/Vect.h>

Include dependency graph for tin.c:

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Functions
int	Vect_tin_get_z (struct Map_info *Map, double tx, double ty, double *tz, double *angle, double *slope)
	calculates z coordinate for point from TIN

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Function Documentation

int Vect_tin_get_z	(	struct Map_info *	Map,
		double	tx,
		double	ty,
		double *	tz,
		double *	angle,
		double *	slope
	)

calculates z coordinate for point from TIN

Returns:

1 on success, 0 point is not in area, -1 area has not 4 points or has island

Parameters:

Map_info

structure

Definition at line 30 of file tin.c.

References Vect_find_area(), Vect_get_area_points(), and Vect_new_line_struct().