rect_tree_from_lwpoly()

static RECT_NODE * rect_tree_from_lwpoly ( const LWGEOM *  lwgeom )

static

Definition at line 745 of file lwtree.c.

{
        RECT_NODE **nodes;
        RECT_NODE *tree;
        uint32_t i, j = 0;
        const LWPOLY *lwpoly = (const LWPOLY*)lwgeom;
 
        if (lwpoly->nrings < 1)
                return NULL;
 
        nodes = lwalloc(sizeof(RECT_NODE*) * lwpoly->nrings);
        for (i = 0; i < lwpoly->nrings; i++)
        {
                RECT_NODE *node = rect_tree_from_ptarray(lwpoly->rings[i], lwgeom->type);
                if (node)
                {
                        node->i.ring_type = i ? RECT_NODE_RING_INTERIOR : RECT_NODE_RING_EXTERIOR;
                        nodes[j++] = node;
                }
        }
        tree = rect_nodes_merge(nodes, j);
        tree->geom_type = lwgeom->type;
        lwfree(nodes);
        return tree;
}

References rect_node::geom_type, rect_node::i, lwalloc(), lwfree(), LWPOLY::nrings, RECT_NODE_RING_EXTERIOR, RECT_NODE_RING_INTERIOR, rect_nodes_merge(), rect_tree_from_ptarray(), RECT_NODE_INTERNAL::ring_type, LWPOLY::rings, and LWGEOM::type.

Referenced by rect_tree_from_lwgeom().

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