lwgeom_construct_empty()

LWGEOM* lwgeom_construct_empty	(	uint8_t	type,
		int	srid,
		char	hasz,
		char	hasm
	)

Definition at line 1851 of file lwgeom.c.

References CIRCSTRINGTYPE, COLLECTIONTYPE, COMPOUNDTYPE, CURVEPOLYTYPE, LINETYPE, lwcircstring_as_lwgeom(), lwcircstring_construct_empty(), lwcollection_as_lwgeom(), lwcollection_construct_empty(), lwcurvepoly_as_lwgeom(), lwcurvepoly_construct_empty(), lwerror(), lwline_as_lwgeom(), lwline_construct_empty(), lwpoint_as_lwgeom(), lwpoint_construct_empty(), lwpoly_as_lwgeom(), lwpoly_construct_empty(), lwtriangle_as_lwgeom(), lwtriangle_construct_empty(), lwtype_name(), MULTILINETYPE, MULTIPOINTTYPE, MULTIPOLYGONTYPE, POINTTYPE, POLYGONTYPE, and TRIANGLETYPE.

Referenced by pgis_union_geometry_array(), ST_BoundingDiagonal(), ST_ClipByBox2d(), and ST_CollectionExtract().

{
        switch(type)
        {
                case POINTTYPE:
                        return lwpoint_as_lwgeom(lwpoint_construct_empty(srid, hasz, hasm));
                case LINETYPE:
                        return lwline_as_lwgeom(lwline_construct_empty(srid, hasz, hasm));
                case POLYGONTYPE:
                        return lwpoly_as_lwgeom(lwpoly_construct_empty(srid, hasz, hasm));
                case CURVEPOLYTYPE:
                        return lwcurvepoly_as_lwgeom(lwcurvepoly_construct_empty(srid, hasz, hasm));
                case CIRCSTRINGTYPE:
                        return lwcircstring_as_lwgeom(lwcircstring_construct_empty(srid, hasz, hasm));
                case TRIANGLETYPE:
                        return lwtriangle_as_lwgeom(lwtriangle_construct_empty(srid, hasz, hasm));
                case COMPOUNDTYPE:
                case MULTIPOINTTYPE:
                case MULTILINETYPE:
                case MULTIPOLYGONTYPE:
                case COLLECTIONTYPE:
                        return lwcollection_as_lwgeom(lwcollection_construct_empty(type, srid, hasz, hasm));
                default:
                        lwerror("lwgeom_construct_empty: unsupported geometry type: %s",
                                lwtype_name(type));
                        return NULL;
        }
}

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