public void TestQuadtreeSplitMerge()
{
TestQuadTreeNode root = new TestQuadTreeNode();
root.NodeData = new QuadTreeNodeData <TestQuadTreeNode>(
new BoundingBox(new Vector3(-100, -5, -100), new Vector3(100, 5, 100)).dx()
);
QuadTree.Split(root, 4);
QuadTree.Merge(root.NodeData.LowerRight.NodeData.LowerRight.NodeData.UpperLeft);
QuadTree.MergeRecursive(root.NodeData.LowerLeft.NodeData.UpperRight);
QuadTree.MergeRecursive(root.NodeData.UpperRight);
QuadTreeVisualizerXNA visualizer = new QuadTreeVisualizerXNA();
XNAGame game = new XNAGame();
game.DrawEvent +=
delegate
{
visualizer.RenderNodeGroundBoundig(game, root);
visualizer.RenderNodeBoundingBox(game, root);
};
game.Run();
}
public void TestQuadtreeVisualizer()
{
TestQuadTreeNode root = createSimpleQuadtree();
QuadTreeVisualizerXNA visualizer = new QuadTreeVisualizerXNA();
XNAGame game = new XNAGame();
game.DrawEvent += delegate
{
visualizer.RenderNodeGroundBoundig(game, root);
};
game.Run();
}
public void SetUp()
{
_quadTree = new QuadTree <TestQuadTreeNode>(new Rectangle(-500, -500, 1000, 1000));
for (int i = 0; i < _testRectangles.Length; i++)
{
var node = new TestQuadTreeNode()
{
Id = i + 1,
Rectangle = _testRectangles[i]
};
_quadTree.Insert(node, node.Rectangle);
}
}
public void ReIndex_ShouldBeCorrect_WhenBoundsChanged()
{
var insertNode = new TestQuadTreeNode()
{
Id = _quadTree.Nodes.Count() + 1,
Rectangle = new Rectangle(-600, -600, 100, 100)
};
_quadTree.Insert(insertNode, insertNode.Rectangle);
foreach (var bounds in _searchBounds)
{
var insideNodesIds = _quadTree.GetNodesInside(bounds).Select(n => n.Id);
var overlappedNodesIds = SlowGetOverlappedNodes(bounds, _quadTree.Nodes).Select(n => n.Id);
insideNodesIds.Should().BeEquivalentTo(overlappedNodesIds);
}
_quadTree.HasNodesInside(new Rectangle(-550, -550, 100, 100)).Should().BeTrue();
}
/// <summary>
/// Creates a simple quadtree from scratch, without using any other functions (split/merge etc)
/// </summary>
private TestQuadTreeNode createSimpleQuadtree()
{
TestQuadTreeNode root = new TestQuadTreeNode();
QuadTreeNodeData <TestQuadTreeNode> rootNodeData = new QuadTreeNodeData <TestQuadTreeNode>();
rootNodeData.BoundingBox = new BoundingBox(new Vector3(-20, -20, -20), new Vector3(20, 20, 20)).dx();
TestQuadTreeNode child = new TestQuadTreeNode();
QuadTreeNodeData <TestQuadTreeNode> childNodeData = new QuadTreeNodeData <TestQuadTreeNode>();
child = new TestQuadTreeNode();
rootNodeData.UpperLeft = child;
childNodeData.Parent = root;
childNodeData.BoundingBox = new BoundingBox(new Vector3(-20, -20, -20), new Vector3(0, 20, 0)).dx();
child.NodeData = childNodeData;
root.NodeData = rootNodeData;
return(root);
}
