/// <summary>
/// /// This is static to make this a non-virtual call
/// </summary>
/// <param name="parent"></param>
/// <param name="child"></param>
/// <param name="frustum"></param>
/// <param name="parentBB"></param>
/// <param name="skipFrustumCheck"></param>
private static void updateVisibility(CompactQuadTree <bool> .Node parent, CompactQuadTreeChild child, ref CullingInfo frustum, ref BoundingBox parentBB, bool skipFrustumCheck)
{
BoundingBox bb;
switch (child)
{
case CompactQuadTreeChild.UpperLeft:
bb = new BoundingBox(
new Vector3(
parentBB.Minimum.X,
parentBB.Minimum.Y,
parentBB.Minimum.Z),
new Vector3(
(parentBB.Maximum.X + parentBB.Minimum.X) * 0.5f,
parentBB.Maximum.Y,
(parentBB.Maximum.Z + parentBB.Minimum.Z) * 0.5f));
break;
case CompactQuadTreeChild.UpperRight:
bb = new BoundingBox(
new Vector3((parentBB.Minimum.X + parentBB.Maximum.X) * 0.5f, parentBB.Minimum.Y, parentBB.Minimum.Z),
new Vector3(parentBB.Maximum.X, parentBB.Maximum.Y, (parentBB.Maximum.Z + parentBB.Minimum.Z) * 0.5f));
break;
case CompactQuadTreeChild.LowerLeft:
bb = new BoundingBox(
new Vector3(parentBB.Minimum.X, parentBB.Minimum.Y, (parentBB.Maximum.Z + parentBB.Minimum.Z) * 0.5f),
new Vector3((parentBB.Maximum.X + parentBB.Minimum.X) * 0.5f, parentBB.Maximum.Y, parentBB.Maximum.Z));
break;
case CompactQuadTreeChild.LowerRight:
bb = new BoundingBox(
new Vector3((parentBB.Maximum.X + parentBB.Minimum.X) * 0.5f, parentBB.Minimum.Y, (parentBB.Maximum.Z + parentBB.Minimum.Z) * 0.5f),
new Vector3(parentBB.Maximum.X, parentBB.Maximum.Y, parentBB.Maximum.Z));
break;
default:
throw new ArgumentOutOfRangeException("child");
}
updateVisibility(parent.GetChild(child), ref frustum, ref bb, skipFrustumCheck);
}
public Node GetChild(CompactQuadTreeChild c)
{
return(new Node(Index * 4 + (int)c)); // parent * 4 + childindex
}
