parse_gml_tin()

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

static

Parse GML Tin (and TriangulatedSurface) (3.1.1)

TODO handle also Tin attributes:

• stopLines
• breakLines
• maxLength
• position

Definition at line 1602 of file lwgeom_in_gml.c.

{
        gmlSrs srs;
        xmlNodePtr xa;
        LWGEOM *geom=NULL;
        bool found=false;
 
        if (is_xlink(xnode)) xnode = get_xlink_node(xnode);
        if (xnode == NULL)
                gml_lwpgerror("invalid GML representation", 30);
 
        parse_gml_srs(xnode, &srs);
        if (*root_srid == SRID_UNKNOWN && srs.srid != SRID_UNKNOWN)
                *root_srid = srs.srid;
 
        geom = (LWGEOM *)lwcollection_construct_empty(TINTYPE, *root_srid, 1, 0);
 
        if (xnode->children == NULL)
                return geom;
 
        /* Looking for gml:patches or gml:trianglePatches */
        for (xa = xnode->children ; xa != NULL ; xa = xa->next)
        {
                if (xa->type != XML_ELEMENT_NODE) continue;
                if (!is_gml_namespace(xa, false)) continue;
                if (is_gml_element(xa, "patches") ||
                    is_gml_element(xa, "trianglePatches"))
                {
                        found = true;
                        break;
                }
        }
        if (!found) return geom; /* empty one */
 
        /* Processing each gml:Triangle */
        for (xa = xa->children ; xa != NULL ; xa = xa->next)
        {
                if (xa->type != XML_ELEMENT_NODE) continue;
                if (!is_gml_namespace(xa, false)) continue;
                if (!is_gml_element(xa, "Triangle")) continue;
 
                if (xa->children != NULL)
                        geom = (LWGEOM*) lwtin_add_lwtriangle((LWTIN *) geom,
                               (LWTRIANGLE *) parse_gml_triangle(xa, hasz, root_srid));
        }
 
        return geom;
}

References get_xlink_node(), gml_lwpgerror(), is_gml_element(), is_gml_namespace(), is_xlink(), lwcollection_construct_empty(), lwtin_add_lwtriangle(), parse_gml_srs(), parse_gml_triangle(), struct_gmlSrs::srid, SRID_UNKNOWN, and TINTYPE.

Referenced by parse_gml().

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