C++ (Cpp) GEOSOverlaps Examples

Example #1

File: MySpatialUDF.cpp Project: krandalf75/MySQL-Spatial-UDF

long long msudf_overlaps(UDF_INIT *initid,UDF_ARGS *args,char *is_null, char *error)
{
	GEOSGeom geom1,geom2;
	long long result;

	DEBUG("msudf_overlaps");

	geom1 = msudf_getGeometry((unsigned char *)args->args[0],args->lengths[0]);		
	if (geom1 == NULL) {
		strcpy(error,"Invalid geometry.");
		*is_null = 1;
		return 0;
	}
	
	geom2 = msudf_getGeometry((unsigned char *)args->args[1],args->lengths[1]);	
	if (geom2 == NULL) {
		strcpy(error,"Invalid geometry.");
		*is_null = 1;
		return 0;
	}
		
	result = GEOSOverlaps(geom1,geom2);
	if (geom1 != NULL) GEOSGeom_destroy(geom1);
	if (geom2 != NULL) GEOSGeom_destroy(geom2);
	
	if (result >1) {
		*is_null = 1;
		return 0;
	} else {
		return result;
	}
}

Example #2

File: mapgeos.c Project: codeforeurope/gim

/*
** Does shape1 overlap shape2, returns MS_TRUE/MS_FALSE or -1 for an error.
*/
int msGEOSOverlaps(shapeObj *shape1, shapeObj *shape2)
{
#ifdef USE_GEOS
  GEOSGeom g1, g2;
  int result;

  if(!shape1 || !shape2)
    return -1;

  if(!shape1->geometry) /* if no geometry for shape1 then build one */
    shape1->geometry = (GEOSGeom) msGEOSShape2Geometry(shape1);
  g1 = shape1->geometry;
  if(!g1) return -1;

  if(!shape2->geometry) /* if no geometry for shape2 then build one */
    shape2->geometry = (GEOSGeom) msGEOSShape2Geometry(shape2);
  g2 = shape2->geometry;
  if(!g2) return -1;

  result = GEOSOverlaps(g1, g2);  
  return ((result==2) ? -1 : result);
#else
  msSetError(MS_GEOSERR, "GEOS support is not available.", "msGEOSOverlaps()");
  return -1;
#endif
}