mirror of
https://git.osgeo.org/gitea/postgis/postgis
synced 2024-10-25 09:32:46 +00:00
44 lines
774 B
C
44 lines
774 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <math.h>
|
|
|
|
#include "liblwgeom.h"
|
|
|
|
#ifndef EPSILON
|
|
#define EPSILON 1.0E-06
|
|
#endif
|
|
#ifndef FPeq
|
|
#define FPeq(A,B) (fabs((A) - (B)) <= EPSILON)
|
|
#endif
|
|
|
|
|
|
/* Expand given box of 'd' units in all directions */
|
|
void
|
|
expand_box2d(BOX2DFLOAT4 *box, double d)
|
|
{
|
|
box->xmin -= d;
|
|
box->ymin -= d;
|
|
|
|
box->xmax += d;
|
|
box->ymax += d;
|
|
}
|
|
|
|
|
|
char
|
|
box2d_same(BOX2DFLOAT4 *box1, BOX2DFLOAT4 *box2)
|
|
{
|
|
return(FPeq(box1->xmax, box2->xmax) &&
|
|
FPeq(box1->xmin, box2->xmin) &&
|
|
FPeq(box1->ymax, box2->ymax) &&
|
|
FPeq(box1->ymin, box2->ymin));
|
|
}
|
|
|
|
BOX2DFLOAT4 *
|
|
box2d_clone(const BOX2DFLOAT4 *in)
|
|
{
|
|
BOX2DFLOAT4 *ret = lwalloc(sizeof(BOX2DFLOAT4));
|
|
memcpy(ret, in, sizeof(BOX2DFLOAT4));
|
|
return ret;
|
|
}
|