lwgeom_count_vertices()

int lwgeom_count_vertices

(

const LWGEOM *

geom

)

Count the total number of vertices in any LWGEOM.

Count the total number of vertices in any LWGEOM.

Definition at line 1189 of file lwgeom.c.

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

Referenced by _lwt_toposnap(), lwcollection_count_vertices(), lwcompound_get_lwpoint(), lwgeom_calculate_mbc(), lwgeom_needs_bbox(), LWGEOM_npoints(), LWGEOM_numpoints_linestring(), LWGEOM_pointn_linestring(), lwgeom_subdivide_recursive(), lwgeom_voronoi_diagram(), test_lwgeom_count_vertices(), test_lwpoly_construct_circle(), test_misc_count_vertices(), test_on_gser_lwgeom_count_vertices(), test_point_count(), and wkt_parser_curvepolygon_add_ring().

{
        int result = 0;

        /* Null? Zero. */
        if( ! geom ) return 0;

        LWDEBUGF(4, "lwgeom_count_vertices got type %s",
                 lwtype_name(geom->type));

        /* Empty? Zero. */
        if( lwgeom_is_empty(geom) ) return 0;

        switch (geom->type)
        {
        case POINTTYPE:
                result = 1;
                break;
        case TRIANGLETYPE:
        case CIRCSTRINGTYPE:
        case LINETYPE:
                result = lwline_count_vertices((LWLINE *)geom);
                break;
        case POLYGONTYPE:
                result = lwpoly_count_vertices((LWPOLY *)geom);
                break;
        case COMPOUNDTYPE:
        case CURVEPOLYTYPE:
        case MULTICURVETYPE:
        case MULTISURFACETYPE:
        case MULTIPOINTTYPE:
        case MULTILINETYPE:
        case MULTIPOLYGONTYPE:
        case POLYHEDRALSURFACETYPE:
        case TINTYPE:
        case COLLECTIONTYPE:
                result = lwcollection_count_vertices((LWCOLLECTION *)geom);
                break;
        default:
                lwerror("%s: unsupported input geometry type: %s",
                        __func__, lwtype_name(geom->type));
                break;
        }
        LWDEBUGF(3, "counted %d vertices", result);
        return result;
}

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