public void EnumerateBvh()
{
// create a bvh hierarchy
var level4_a = new TriangleShape(new Vector3(0, 0, 1), new Vector3(0, 0, 3), new Vector3(0, 1, 2), null);
var level4_b = new TriangleShape(new Vector3(0, 0, 11), new Vector3(0, 0, 13), new Vector3(0, 1, 12), null);
var level4_c = new TriangleShape(new Vector3(3, 0, 1), new Vector3(3, 0, 3), new Vector3(3, 1, 2), null);
var level3_a = new UnboundCollection(new List <ITraceable>()
{
level4_a, level4_b, level4_c
});
var level3_b = new TriangleShape(new Vector3(43, 0, 1), new Vector3(43, 0, 3), new Vector3(43, 1, 2), null);
var level2_a = new Transform(level3_a, Matrix4X4.CreateTranslation(0, 0, 40));
var level2_b = new Transform(level3_b, Matrix4X4.CreateTranslation(0, 40, 0));
var level1 = new UnboundCollection(new List <ITraceable>()
{
level2_a, level2_b
});
var root = new Transform(level1);
// enumerate it and check it
Assert.AreEqual(9, new BvhIterator(root).Count());
int count = 0;
foreach (var item in new BvhIterator(root))
{
switch (count++)
{
case 0:
Assert.IsTrue(item.Bvh is Transform);
Assert.AreEqual(0, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 0), item.TransformToWorld);
break;
case 1:
Assert.IsTrue(item.Bvh is UnboundCollection);
Assert.AreEqual(1, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 0), item.TransformToWorld);
break;
case 2:
Assert.IsTrue(item.Bvh is Transform);
Assert.AreEqual(2, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 0), item.TransformToWorld);
break;
case 3:
Assert.IsTrue(item.Bvh is UnboundCollection);
Assert.AreEqual(3, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 40), item.TransformToWorld);
break;
case 4:
Assert.IsTrue(item.Bvh is TriangleShape);
Assert.AreEqual(4, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 40), item.TransformToWorld);
break;
case 5:
Assert.IsTrue(item.Bvh is TriangleShape);
Assert.AreEqual(4, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 40), item.TransformToWorld);
break;
case 6:
Assert.IsTrue(item.Bvh is TriangleShape);
Assert.AreEqual(4, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 40), item.TransformToWorld);
break;
case 7:
Assert.IsTrue(item.Bvh is Transform);
Assert.AreEqual(2, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 0, 0), item.TransformToWorld);
break;
case 8:
Assert.IsTrue(item.Bvh is TriangleShape);
Assert.AreEqual(3, item.Depth);
Assert.AreEqual(Matrix4X4.CreateTranslation(0, 40, 0), item.TransformToWorld);
break;
}
}
}
public void RenderRecursive(UnboundCollection objectToProcess, int level = 0)
{
RenderBounds(objectToProcess.GetAxisAlignedBoundingBox());
foreach (var child in objectToProcess.Items)
{
RenderRecursive((dynamic)child, level + 1);
}
}
