public void Creates_root_node_with_four_children_at_depth_one()
{
var sut = new ChunkedLodTreeFactory();
var expectedBounds = new Bounds2D(new Vector2d(-1, -1), new Vector2d(1, 1));
var result = sut.Create(expectedBounds, 1);
Assert.AreEqual(expectedBounds, result.Bounds);
Assert.AreEqual(2, result.GeometricError);
Assert.AreEqual(4, result.Nodes.Length);
Assert.AreEqual(result, result.Nodes[0].Parent);
}
public void Creates_children_with_correct_bounds_and_are_leafs_at_depth_one()
{
var sut = new ChunkedLodTreeFactory();
var expectedBounds = new Bounds2D(new Vector2d(-1, -1), new Vector2d(1, 1));
var result = sut.Create(expectedBounds, 1);
AssertLeaf(new Box3D(new Vector3d(-1, -1, -1), new Vector3d(0, 0, 1)), result.Nodes[0]);
AssertLeaf(new Box3D(new Vector3d(0, -1, -1), new Vector3d(1, 0, 1)), result.Nodes[1]);
AssertLeaf(new Box3D(new Vector3d(-1, 0, -1), new Vector3d(0, 1, 1)), result.Nodes[2]);
AssertLeaf(new Box3D(new Vector3d(0, 0, -1), new Vector3d(1, 1, 1)), result.Nodes[3]);
}
public void Creates_root_node_with_no_leafs_at_zero_depth()
{
var sut = new ChunkedLodTreeFactory();
var expectedBounds = new Bounds2D(new Vector2d(-1, -2), new Vector2d(1, 2));
var result = sut.Create(expectedBounds, 0);
Assert.AreEqual(expectedBounds, result.Bounds);
Assert.AreEqual(1, result.GeometricError);
Assert.IsEmpty(result.Nodes);
Assert.IsNull(result.Parent);
}
public void Creates_tree_for_depth_of_two()
{
var sut = new ChunkedLodTreeFactory();
var expectedBounds = new Bounds2D(new Vector2d(-1, -1), new Vector2d(1, 1));
var result = sut.Create(expectedBounds, 2);
Assert.AreEqual(4, result.GeometricError);
var leafs = result.Nodes.SelectMany(x => x.Nodes);
Assert.AreEqual(16, leafs.Count());
foreach (var leaf in leafs)
{
Assert.IsEmpty(leaf.Nodes);
}
}