int lwgeom_is_empty(const LWGEOM *geom)
{
int result = LW_FALSE;
LWDEBUGF(4, "lwgeom_is_empty: got type %s",
lwtype_name(geom->type));
switch (geom->type)
{
case POINTTYPE:
return lwpoint_is_empty((LWPOINT*)geom);
break;
case LINETYPE:
return lwline_is_empty((LWLINE*)geom);
break;
case CIRCSTRINGTYPE:
return lwcircstring_is_empty((LWCIRCSTRING*)geom);
break;
case POLYGONTYPE:
return lwpoly_is_empty((LWPOLY*)geom);
break;
case TRIANGLETYPE:
return lwtriangle_is_empty((LWTRIANGLE*)geom);
break;
case MULTIPOINTTYPE:
case MULTILINETYPE:
case MULTIPOLYGONTYPE:
case COMPOUNDTYPE:
case CURVEPOLYTYPE:
case MULTICURVETYPE:
case MULTISURFACETYPE:
case POLYHEDRALSURFACETYPE:
case TINTYPE:
case COLLECTIONTYPE:
return lwcollection_is_empty((LWCOLLECTION *)geom);
break;
default:
lwerror("lwgeom_is_empty: unsupported input geometry type: %s",
lwtype_name(geom->type));
break;
}
return result;
}
void
lwtriangle_reverse(LWTRIANGLE *triangle)
{
if( lwtriangle_is_empty(triangle) ) return;
ptarray_reverse(triangle->points);
}