parse_gml_linearring()

static LWGEOM* parse_gml_linearring ( xmlNodePtr  xnode, bool *  hasz, int *  root_srid  )

static

Parse GML LinearRing (3.1.1)

Definition at line 1097 of file lwgeom_in_gml.c.

References get_xlink_node(), gml_lwpgerror(), gml_reproject_pa(), is_xlink(), lwalloc(), lwpoly_construct(), parse_gml_data(), parse_gml_srs(), ptarray_flip_coordinates(), ptarray_is_closed_2d(), ptarray_is_closed_3d(), struct_gmlSrs::reverse_axis, struct_gmlSrs::srid, and SRID_UNKNOWN.

Referenced by parse_gml().

{
        gmlSrs srs;
        LWGEOM *geom;
        POINTARRAY **ppa = NULL;

        if (is_xlink(xnode)) xnode = get_xlink_node(xnode);
        parse_gml_srs(xnode, &srs);

        ppa = (POINTARRAY**) lwalloc(sizeof(POINTARRAY*));
        ppa[0] = parse_gml_data(xnode->children, hasz, root_srid);

        if (ppa[0]->npoints < 4
            || (!*hasz && !ptarray_is_closed_2d(ppa[0]))
            ||  (*hasz && !ptarray_is_closed_3d(ppa[0])))
            gml_lwpgerror("invalid GML representation", 42);

        if (srs.reverse_axis)
                ppa[0] = ptarray_flip_coordinates(ppa[0]);

        if (srs.srid != *root_srid && *root_srid != SRID_UNKNOWN)
                gml_reproject_pa(ppa[0], srs.srid, *root_srid);

        geom = (LWGEOM *) lwpoly_construct(*root_srid, NULL, 1, ppa);

        return geom;
}

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