e_intersect.h File Reference

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Macros
#define	FZERO(X, TOL)   (fabs(X)<TOL)
#define	FEQUAL(X, Y, TOL)   (fabs(X-Y)<TOL)

Functions
int	segment_intersection_2d_tol (double ax1, double ay1, double ax2, double ay2, double bx1, double by1, double bx2, double by2, double *x1, double *y1, double *x2, double *y2, double tol)
int	segment_intersection_2d (double ax1, double ay1, double ax2, double ay2, double bx1, double by1, double bx2, double by2, double *x1, double *y1, double *x2, double *y2)
int	almost_equal (double a, double b, int bits)

Macro Definition Documentation

#define FEQUAL	(		X,
			Y,
			TOL
	)		(fabs(X-Y)<TOL)

Definition at line 5 of file e_intersect.h.

Referenced by find_all_intersections(), and segment_intersection_2d_tol().

#define FZERO	(		X,
			TOL
	)		(fabs(X)<TOL)

Definition at line 4 of file e_intersect.h.

Referenced by segment_intersection_2d_tol().

Function Documentation

int almost_equal	(	double	a,
		double	b,
		int	bits
	)

Definition at line 912 of file e_intersect.c.

References N.

int segment_intersection_2d	(	double	ax1,
		double	ay1,
		double	ax2,
		double	ay2,
		double	bx1,
		double	by1,
		double	bx2,
		double	by2,
		double *	x1,
		double *	y1,
		double *	x2,
		double *	y2
	)

Definition at line 677 of file e_intersect.c.

References D, DA, DB, G_debug(), G_warning(), MAX, MIN, and SWAP.

Referenced by find_all_intersections().

int segment_intersection_2d_tol	(	double	ax1,
		double	ay1,
		double	ax2,
		double	ay2,
		double	bx1,
		double	by1,
		double	bx2,
		double	by2,
		double *	x1,
		double *	y1,
		double *	x2,
		double *	y2,
		double	tol
	)

Definition at line 345 of file e_intersect.c.

References FEQUAL, FZERO, G_debug(), G_warning(), MAX, and MIN.