wkt_parser_polygon_add_ring()

LWGEOM* wkt_parser_polygon_add_ring	(	LWGEOM *	poly,
		POINTARRAY *	pa,
		char	dimcheck
	)

Definition at line 485 of file lwin_wkt.c.

References POINTARRAY::flags, LWGEOM::flags, FLAGS_NDIMS, global_parser_result, LW_FAILURE, LW_PARSER_CHECK_CLOSURE, LW_PARSER_CHECK_MINPOINTS, LWDEBUG, lwgeom_as_lwpoly(), lwgeom_free(), lwpoly_add_ring(), POINTARRAY::npoints, struct_lwgeom_parser_result::parser_check_flags, PARSER_ERROR_MIXDIMS, PARSER_ERROR_MOREPOINTS, PARSER_ERROR_OTHER, PARSER_ERROR_UNCLOSED, ptarray_free(), ptarray_is_closed_2d(), ptarray_is_closed_z(), and SET_PARSER_ERROR.

Referenced by wkt_parser_polygon_new(), and yyparse().

{
        LWDEBUG(4,"entered");

        /* Bad inputs are a problem */
        if( ! (pa && poly) )
        {
                SET_PARSER_ERROR(PARSER_ERROR_OTHER);
                return NULL;
        }

        /* Rings must agree on dimensionality */
        if( FLAGS_NDIMS(poly->flags) != FLAGS_NDIMS(pa->flags) )
        {
                ptarray_free(pa);
                lwgeom_free(poly);
                SET_PARSER_ERROR(PARSER_ERROR_MIXDIMS);
                return NULL;
        }

        /* Apply check for minimum number of points, if requested. */
        if( (global_parser_result.parser_check_flags & LW_PARSER_CHECK_MINPOINTS) && (pa->npoints < 4) )
        {
                ptarray_free(pa);
                lwgeom_free(poly);
                SET_PARSER_ERROR(PARSER_ERROR_MOREPOINTS);
                return NULL;
        }

        /* Apply check for not closed rings, if requested. */
        if( (global_parser_result.parser_check_flags & LW_PARSER_CHECK_CLOSURE) &&
            ! (dimcheck == 'Z' ? ptarray_is_closed_z(pa) : ptarray_is_closed_2d(pa)) )
        {
                ptarray_free(pa);
                lwgeom_free(poly);
                SET_PARSER_ERROR(PARSER_ERROR_UNCLOSED);
                return NULL;
        }

        /* If something goes wrong adding a ring, error out. */
        if ( LW_FAILURE == lwpoly_add_ring(lwgeom_as_lwpoly(poly), pa) )
        {
                ptarray_free(pa);
                lwgeom_free(poly);
                SET_PARSER_ERROR(PARSER_ERROR_OTHER);
                return NULL;
        }
        return poly;
}

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