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◆ LWGEOM_to_BOX2D()
| Datum LWGEOM_to_BOX2D | ( | PG_FUNCTION_ARGS | ) |
Definition at line 122 of file lwgeom_box.c.
123{
124 GSERIALIZED *geom = PG_GETARG_GSERIALIZED_P(0);
126 GBOX gbox;
127
128 /* Cannot box empty! */
130 PG_RETURN_NULL();
131
132 /* Cannot calculate box? */
134 PG_RETURN_NULL();
135
136 /* Strip out higher dimensions */
139
140 PG_FREE_IF_COPY(geom, 0);
141 PG_RETURN_POINTER(gbox_copy(&gbox));
142}
GBOX * gbox_copy(const GBOX *box)
Return a copy of the GBOX, based on dimensionality of flags.
Definition gbox.c:426
LWGEOM * lwgeom_from_gserialized(const GSERIALIZED *g)
Allocate a new LWGEOM from a GSERIALIZED.
Definition gserialized.c:239
int lwgeom_calculate_gbox(const LWGEOM *lwgeom, GBOX *gbox)
Calculate bounding box of a geometry, automatically taking into account whether it is cartesian or ge...
Definition lwgeom.c:737
static int lwgeom_is_empty(const LWGEOM *geom)
Return true or false depending on whether a geometry is an "empty" geometry (no vertices members)
Definition lwinline.h:193
Definition liblwgeom.h:338
Definition liblwgeom.h:429
Definition liblwgeom.h:443
References GBOX::flags, FLAGS_SET_M, FLAGS_SET_Z, gbox_copy(), LW_FAILURE, lwgeom_calculate_gbox(), lwgeom_from_gserialized(), and lwgeom_is_empty().
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