// This method will recompute the Bound without precondition. It will not cascade upwards to parent nodes, because
// it is intended to be called recursively.
public void BottomUpRecalculateBound()
{
List <BoundingBox> childBounds = new List <BoundingBox>();
foreach (SceneNode child in mChildren)
{
ImplicitBoundingBoxNode implicitBVChild = child as ImplicitBoundingBoxNode;
if (implicitBVChild != null)
{
implicitBVChild.BottomUpRecalculateBound();
childBounds.Add(implicitBVChild.Bound);
}
else
{
childBounds.AddRange(child.FindExplicitBoundingVolumes());
}
}
BoundingBox combinedBound = childBounds.First();
foreach (BoundingBox childBox in childBounds.Skip(1))
{
combinedBound = BoundingBox.CreateMerged(combinedBound, childBox);
}
Bound = combinedBound;
}
protected override void ActorInitializedHandler(object sender, EventArgs e)
{
ImplicitBoundingBoxNode implicitBox = SceneGraph as ImplicitBoundingBoxNode;
if (implicitBox != null)
{
implicitBox.BottomUpRecalculateBound();
}
// We shouldn't need this data anymore.
Heights = null;
base.ActorInitializedHandler(sender, e);
}
