PostGIS  2.1.10dev-r@@SVN_REVISION@@
int gbox_overlaps_2d ( const GBOX g1,
const GBOX g2 
)

Return LW_TRUE if the GBOX overlaps on the 2d plane, LW_FALSE otherwise.

Definition at line 281 of file g_box.c.

References GBOX::flags, FLAGS_GET_GEODETIC, LW_FALSE, LW_TRUE, lwerror(), GBOX::xmax, GBOX::xmin, GBOX::ymax, and GBOX::ymin.

Referenced by crosses(), disjoint(), geos_intersects(), overlaps(), ST_Equals(), and touches().

282 {
283 
284  /* Make sure our boxes are consistent */
286  lwerror("gbox_overlaps: cannot compare geodetic and non-geodetic boxes");
287 
288  /* Check X/Y first */
289  if ( g1->xmax < g2->xmin || g1->ymax < g2->ymin ||
290  g1->xmin > g2->xmax || g1->ymin > g2->ymax )
291  return LW_FALSE;
292 
293  return LW_TRUE;
294 }
#define FLAGS_GET_GEODETIC(flags)
Definition: liblwgeom.h:109
double xmax
Definition: liblwgeom.h:249
void lwerror(const char *fmt,...)
Write a notice out to the error handler.
Definition: lwutil.c:67
double ymin
Definition: liblwgeom.h:250
double xmin
Definition: liblwgeom.h:248
#define LW_FALSE
Definition: liblwgeom.h:52
#define LW_TRUE
Return types for functions with status returns.
Definition: liblwgeom.h:51
double ymax
Definition: liblwgeom.h:251
uint8_t flags
Definition: liblwgeom.h:247

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