//stackless refit
protected void Refit()
{
int nodecount = GetNodeCount();
while (nodecount-- != 0)
{
if (IsLeafNode(nodecount))
{
AABB leafbox;
m_primitive_manager.GetPrimitiveBox(GetNodeData(nodecount), out leafbox);
SetNodeBound(nodecount, ref leafbox);
}
else
{
//const GIM_BVH_TREE_NODE * nodepointer = get_node_pointer(nodecount);
//get left bound
AABB bound = new AABB();
bound.Invalidate();
AABB temp_box;
int child_node = GetLeftNode(nodecount);
if (child_node != 0)
{
GetNodeBound(child_node, out temp_box);
bound.Merge(ref temp_box);
}
child_node = GetRightNode(nodecount);
if (child_node != 0)
{
GetNodeBound(child_node, out temp_box);
bound.Merge(ref temp_box);
}
SetNodeBound(nodecount, ref bound);
}
}
}
//! this rebuild the entire set
public void BuildSet()
{
//obtain primitive boxes
int listSize = m_primitive_manager.GetPrimitiveCount();
GIM_BVH_DATA_ARRAY primitive_boxes = new GIM_BVH_DATA_ARRAY(listSize);
// forces boxes to be allocated
primitive_boxes.Resize(listSize);
GIM_BVH_DATA[] rawArray = primitive_boxes.GetRawArray();
for (int i = 0; i < listSize; i++)
{
m_primitive_manager.GetPrimitiveBox(i, out rawArray[i].m_bound);
rawArray[i].m_data = i;
}
m_box_tree.BuildTree(primitive_boxes);
}