poly.c File Reference

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

Include dependency graph for diglib/poly.c:

Go to the source code of this file.

Macros
#define	HUGE_VAL   9999999999999.0

Functions
int	dig_get_poly_points (int n_lines, struct line_pnts **LPoints, int *direction, struct line_pnts *BPoints)
int	dig_find_area_poly (struct line_pnts *Points, double *totalarea)
double	dig_find_poly_orientation (struct line_pnts *Points)

Macro Definition Documentation

HUGE_VAL

#define HUGE_VAL   9999999999999.0

Definition at line 23 of file diglib/poly.c.

Function Documentation

dig_find_area_poly()

int dig_find_area_poly	(	struct line_pnts *	Points,
		double *	totalarea
	)

Definition at line 97 of file diglib/poly.c.

References line_pnts::n_points, line_pnts::x, and line_pnts::y.

Referenced by Vect_build_line_area(), and Vect_isle_find_area().

dig_find_poly_orientation()

double dig_find_poly_orientation

(

struct line_pnts *

Points

)

Definition at line 136 of file diglib/poly.c.

References line_pnts::n_points, line_pnts::x, and line_pnts::y.

dig_get_poly_points()

int dig_get_poly_points	(	int	n_lines,
		struct line_pnts **	LPoints,
		int *	direction,
		struct line_pnts *	BPoints
	)

Definition at line 34 of file diglib/poly.c.

References dig_alloc_points(), line_pnts::n_points, line_pnts::x, and line_pnts::y.