LWGEOM* wkt_parser_triangle_new(POINTARRAY *pa, char *dimensionality) { uint8_t flags = wkt_dimensionality(dimensionality); LWDEBUG(4,"entered"); /* No pointarray means it is empty */ if( ! pa ) return lwtriangle_as_lwgeom(lwtriangle_construct_empty(SRID_UNKNOWN, FLAGS_GET_Z(flags), FLAGS_GET_M(flags))); /* If the number of dimensions is not consistent, we have a problem. */ if( wkt_pointarray_dimensionality(pa, flags) == LW_FALSE ) { ptarray_free(pa); SET_PARSER_ERROR(PARSER_ERROR_MIXDIMS); return NULL; } /* Triangles need four points. */ if( (pa->npoints != 4) ) { ptarray_free(pa); SET_PARSER_ERROR(PARSER_ERROR_TRIANGLEPOINTS); return NULL; } /* Triangles need closure. */ if( ! ptarray_isclosed(pa) ) { ptarray_free(pa); SET_PARSER_ERROR(PARSER_ERROR_UNCLOSED); return NULL; } return lwtriangle_as_lwgeom(lwtriangle_construct(SRID_UNKNOWN, NULL, pa)); }
LWGEOM * lwgeom_construct_empty(uint8_t type, int srid, char hasz, char hasm) { 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; } }
void lwtriangle_release(LWTRIANGLE *lwtriangle) { lwgeom_release(lwtriangle_as_lwgeom(lwtriangle)); }