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Defines | |
#define | D ((ax2-ax1)*(by1-by2) - (ay2-ay1)*(bx1-bx2)) |
#define | D1 ((bx1-ax1)*(by1-by2) - (by1-ay1)*(bx1-bx2)) |
#define | D2 ((ax2-ax1)*(by1-ay1) - (ay2-ay1)*(bx1-ax1)) |
#define | SWAP(x, y) {int t; t=x; x=y; y=t;} |
Functions | |
int | G_intersect_line_segments (double ax1, double ay1, double ax2, double ay2, double bx1, double by1, double bx2, double by2, double *ra, double *rb, double *x, double *y) |
#define D ((ax2-ax1)*(by1-by2) - (ay2-ay1)*(bx1-bx2)) |
#define D1 ((bx1-ax1)*(by1-by2) - (by1-ay1)*(bx1-bx2)) |
#define D2 ((ax2-ax1)*(by1-ay1) - (ay2-ay1)*(bx1-ax1)) |
#define SWAP | ( | x, | |||
y | ) | {int t; t=x; x=y; y=t;} |
int G_intersect_line_segments | ( | double | ax1, | |
double | ay1, | |||
double | ax2, | |||
double | ay2, | |||
double | bx1, | |||
double | by1, | |||
double | bx2, | |||
double | by2, | |||
double * | ra, | |||
double * | rb, | |||
double * | x, | |||
double * | y | |||
) |
Definition at line 80 of file intersect.c.
References D, D1, D2, and SWAP.
Referenced by G_distance_between_line_segments(), and G_distance_point_to_line_segment().