public void EnforceMinimumDepth()
{
if (_nodeDepth < _parentTree.MinimumDepth)
{
if (this.HasChildren)
{
_isActive = false;
_isSplit = true;
ChildTopLeft.EnforceMinimumDepth();
ChildTopRight.EnforceMinimumDepth();
ChildBottomLeft.EnforceMinimumDepth();
ChildBottomRight.EnforceMinimumDepth();
}
else
{
this.Activate();
_isSplit = false;
}
return;
}
if (_nodeDepth == _parentTree.MinimumDepth || (_nodeDepth < _parentTree.MinimumDepth && !this.HasChildren))
{
this.Activate();
_isSplit = false;
}
}
public void Update(GameTime gameTime)
{
View = camera.World;
Projection = camera.Projection;
CameraPosition = camera.Position;
//Only update if the camera position has changed
if (_cameraPosition == _lastCameraPosition)
{
return;
}
//Effect.View = View;
//Effect.Projection = Projection;
_lastCameraPosition = _cameraPosition;
IndexCount = 0;
_rootNode.EnforceMinimumDepth();
_activeNode = _rootNode.DeepestNodeWithPoint(CameraPosition);
if (_activeNode != null)
{
_activeNode.Split();
}
_rootNode.SetActiveVertices();
_buffers.UpdateIndexBuffer(Indices, IndexCount);
_buffers.SwapBuffer();
}