parse_gml_line()

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

static

Parse GML lineString (2.1.2, 3.1.1)

Definition at line 1098 of file lwgeom_in_gml.c.

{
        gmlSrs srs;
        LWGEOM *geom;
        POINTARRAY *pa;
 
        if (is_xlink(xnode)) xnode = get_xlink_node(xnode);
        if (xnode == NULL)
                gml_lwpgerror("invalid GML representation", 30);
 
        if (xnode->children == NULL)
                return lwline_as_lwgeom(lwline_construct_empty(*root_srid, 0, 0));
 
        pa = parse_gml_data(xnode->children, hasz, root_srid);
        if (pa->npoints < 2) gml_lwpgerror("invalid GML representation", 36);
 
        parse_gml_srs(xnode, &srs);
        if (srs.reverse_axis) pa = ptarray_flip_coordinates(pa);
        if (!*root_srid)
        {
                *root_srid = srs.srid;
                geom = (LWGEOM *) lwline_construct(*root_srid, NULL, pa);
        }
        else
        {
                if (srs.srid != *root_srid)
                        gml_reproject_pa(pa, srs.srid, *root_srid);
                geom = (LWGEOM *) lwline_construct(SRID_UNKNOWN, NULL, pa);
        }
 
        return geom;
}

References get_xlink_node(), gml_lwpgerror(), gml_reproject_pa(), is_xlink(), lwline_as_lwgeom(), lwline_construct(), lwline_construct_empty(), POINTARRAY::npoints, parse_gml_data(), parse_gml_srs(), ptarray_flip_coordinates(), struct_gmlSrs::reverse_axis, struct_gmlSrs::srid, and SRID_UNKNOWN.

Referenced by parse_gml().

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