lwgeom_count_vertices()

uint32_t lwgeom_count_vertices

(

const LWGEOM *

geom

)

Count points in an LWGEOM.

Count the total number of vertices in any LWGEOM.

TODO: Make sure the internal functions don't overflow

Definition at line 1235 of file lwgeom.c.

{
        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;
}

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 LWLINE::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().

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