/// <summary>
/// Draw the bounding boxes that exists in the <c>OcTree</c> structure.
/// </summary>
/// <param name="viewMatrix">View matrix of the active camera.</param>
/// <param name="projectionMatrix">Projection matrix of the active camera.</param>
/// <param name="cameraFrustum">Bounding frustum of the camera.</param>
/// <param name="effect">Effect to apply to the models.</param>
public void DrawBoxes(Matrix viewMatrix, Matrix projectionMatrix,
BoundingFrustum cameraFrustum, BasicEffect effect, bool checkFrustum = true)
{
Dictionary <string, Matrix> dictionary = new Dictionary <string, Matrix>();
Stack <OcTreeNode> auxStack = new Stack <OcTreeNode>();
auxStack.Push(RootNode);
while (auxStack.Count != 0)
{
OcTreeNode node = auxStack.Pop();
ContainmentType cameraNodeContainment = cameraFrustum.Contains(node.BoundingBox);
if (!checkFrustum || (checkFrustum && cameraNodeContainment != ContainmentType.Disjoint))
{
if (node.ChildList.Count == 0)
{
node.DrawBoundingBox(Matrix.Identity, viewMatrix, projectionMatrix, effect);
}
else
{
for (int i = node.ChildList.Count - 1; i >= 0; i--)
{
auxStack.Push(node.ChildList[i]);
}
node.DrawBoundingBox(Matrix.Identity, viewMatrix, projectionMatrix, effect);
}
}
}
}
