lwgeom_dimensionality()

int lwgeom_dimensionality ( const LWGEOM *  geom )

extern

Return the dimensionality (relating to point/line/poly) of an lwgeom.

Definition at line 1517 of file lwgeom.c.

{
        int dim;
 
        LWDEBUGF(3, "lwgeom_dimensionality got type %s",
                 lwtype_name(geom->type));
 
        switch (geom->type)
        {
        case POINTTYPE:
        case MULTIPOINTTYPE:
                return 0;
                break;
        case LINETYPE:
        case CIRCSTRINGTYPE:
        case MULTILINETYPE:
        case COMPOUNDTYPE:
        case MULTICURVETYPE:
                return 1;
                break;
        case POLYGONTYPE:
        case TRIANGLETYPE:
        case CURVEPOLYTYPE:
        case MULTIPOLYGONTYPE:
        case MULTISURFACETYPE:
                return 2;
                break;
 
        case POLYHEDRALSURFACETYPE:
        case TINTYPE:
                dim = lwgeom_is_closed(geom)?3:2;
                return dim;
                break;
 
        case COLLECTIONTYPE:
                return lwcollection_dimensionality((const LWCOLLECTION *)geom);
                break;
        default:
                lwerror("lwgeom_dimensionality: unsupported input geometry type: %s",
                        lwtype_name(geom->type));
                break;
        }
        return 0;
}

References CIRCSTRINGTYPE, COLLECTIONTYPE, COMPOUNDTYPE, CURVEPOLYTYPE, LINETYPE, lwcollection_dimensionality(), LWDEBUGF, lwerror(), lwgeom_is_closed(), lwtype_name(), MULTICURVETYPE, MULTILINETYPE, MULTIPOINTTYPE, MULTIPOLYGONTYPE, MULTISURFACETYPE, POINTTYPE, POLYGONTYPE, POLYHEDRALSURFACETYPE, TINTYPE, TRIANGLETYPE, LWGEOM::type, and LWCOLLECTION::type.

Referenced by check_dimension(), lwcollection_dimensionality(), and lwgeom_clean().

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