private static void addObject_Pushdown(SSBVHNodeAdaptor <GO> nAda, ssBVHNode <GO> curNode, GO newOb)
{
var left = curNode.Left;
var right = curNode.Right;
// merge and pushdown left and right as a new node..
var mergedSubnode = new ssBVHNode <GO>(nAda.BVH)
{
Left = left,
Right = right,
Parent = curNode,
ContainedObjects = null
};
// we need to be an interior node... so null out our object list..
left.Parent = mergedSubnode;
right.Parent = mergedSubnode;
mergedSubnode.ChildRefit(nAda, false);
// make new subnode for obj
var newSubnode = new ssBVHNode <GO>(nAda.BVH);
newSubnode.Parent = curNode;
newSubnode.ContainedObjects = new List <GO> {
newOb
};
nAda.MapObjectToBvhLeaf(newOb, newSubnode);
newSubnode.ComputeVolume(nAda);
// make assignments..
curNode.Left = mergedSubnode;
curNode.Right = newSubnode;
curNode.SetDepth(nAda, curNode.Depth); // propagate new depths to our children.
curNode.ChildRefit(nAda);
}
