public void Draw(RendererBatch batch, Color treeColor, Color leafColor)
{
var treeNodes = new Stack <Node>();
treeNodes.Push(_root);
while (treeNodes.Count > 0)
{
var treeNode = treeNodes.Pop();
if (treeNode != null && !treeNode.IsLeaf)
{
batch.DrawPrimitives(p =>
{
var aabb = treeNode.AABB;
p.DrawRectangle(aabb.Min, aabb.Size, treeColor);
});
treeNodes.Push(treeNode.Left);
treeNodes.Push(treeNode.Right);
}
}
foreach (var leafNode in _nodes.Values)
{
batch.DrawPrimitives(p =>
{
var aabb = leafNode.AABB;
p.DrawRectangle(aabb.Min, aabb.Size, leafColor);
});
}
}
protected override void AfterDraw(RendererBatch batch)
{
BlendState = null;
DepthStencilState = new DepthStencilState()
{
DepthBufferEnable = false,
StencilEnable = true,
StencilFunction = Reverse
? CompareFunction.Equal
: CompareFunction.NotEqual,
StencilPass = StencilOperation.Keep,
ReferenceStencil = 0
};
Effect = null;
batch.Configure(BlendState, DepthStencilState, Effect, Matrix);
batch.Begin();
batch.DrawPrimitives(primitive =>
{
primitive.FillRectangle(
View.Location.ToVector2(),
View.Size.ToVector2(),
ClearColor);
});
batch.End();
}
