Lazy<TriangleTree>* AssemblyTree::create_triangle_tree(const Assembly& assembly) const
{
// Compute the assembly space bounding box of the assembly.
const GAABB3 assembly_bbox =
get_parent_bbox<GAABB3>(
assembly.object_instances().begin(),
assembly.object_instances().end());
RegionInfoVector regions;
collect_regions(assembly, regions);
auto_ptr<ILazyFactory<TriangleTree> > triangle_tree_factory(
new TriangleTreeFactory(
TriangleTree::Arguments(
assembly.get_uid(),
assembly_bbox,
assembly,
regions)));
return new Lazy<TriangleTree>(triangle_tree_factory);
}
RegionTree::RegionTree(const Arguments& arguments)
: m_assembly_uid(arguments.m_assembly_uid)
{
// Build the intermediate representation of the tree.
IntermRegionTree interm_tree(arguments);
// Copy tree bounding box.
m_bbox = interm_tree.m_bbox;
// Copy tree nodes.
m_nodes = interm_tree.m_nodes;
// Create final tree leaves.
const size_t leaf_count = interm_tree.m_leaves.size();
for (size_t i = 0; i < leaf_count; ++i)
{
// Fetch the intermediate representation of this leaf.
const IntermRegionLeaf* interm_leaf = interm_tree.m_leaves[i];
// Get a new unique ID for this triangle tree.
const UniqueID triangle_tree_uid = new_guid();
// Create the triangle tree factory.
auto_ptr<ILazyFactory<TriangleTree> > triangle_tree_factory(
new TriangleTreeFactory(
TriangleTree::Arguments(
arguments.m_scene,
triangle_tree_uid,
interm_leaf->m_extent,
interm_leaf->m_assembly,
interm_leaf->m_regions)));
// Create and store the triangle tree.
m_triangle_trees.insert(
make_pair(triangle_tree_uid, new Lazy<TriangleTree>(triangle_tree_factory)));
// Create and store the leaf.
m_leaves.push_back(new RegionLeaf(*this, triangle_tree_uid));
}
}
