wkt_parser_triangle_new()

LWGEOM* wkt_parser_triangle_new	(	POINTARRAY *	pa,
		char *	dimensionality
	)

Definition at line 424 of file lwin_wkt.c.

{
        lwflags_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_is_closed_z(pa) )
        {
                ptarray_free(pa);
                SET_PARSER_ERROR(PARSER_ERROR_UNCLOSED);
                return NULL;
        }
 
        return lwtriangle_as_lwgeom(lwtriangle_construct(SRID_UNKNOWN, NULL, pa));
}

References FLAGS_GET_M, FLAGS_GET_Z, LW_FALSE, LWDEBUG, lwtriangle_as_lwgeom(), lwtriangle_construct(), lwtriangle_construct_empty(), POINTARRAY::npoints, PARSER_ERROR_MIXDIMS, PARSER_ERROR_TRIANGLEPOINTS, PARSER_ERROR_UNCLOSED, ptarray_free(), ptarray_is_closed_z(), SET_PARSER_ERROR, SRID_UNKNOWN, wkt_dimensionality(), and wkt_pointarray_dimensionality().

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