public void TestRemoveInMiddle()
{
var b = new RenderingBlock();
Int3 u = new Int3(1, 2, 3);
Int3 v = new Int3(4, 5, 6);
Int3 w = new Int3(0, 0, 0);
b.Set(u, Matrix4x4.identity);
b.Set(v, Matrix4x4.identity);
b.Set(w, Matrix4x4.identity);
// u, v, w
Assert.AreEqual(3, b.GetNumOccupied());
Assert.IsTrue(b.CheckInvariants());
b.Clear(v);
// u, w
Assert.AreEqual(2, b.GetNumOccupied());
Assert.IsTrue(b.CheckInvariants());
b.Set(v, Matrix4x4.identity);
// u, w, v
Assert.AreEqual(3, b.GetNumOccupied());
Assert.IsTrue(b.CheckInvariants());
b.Clear(u);
// w, v
Assert.AreEqual(2, b.GetNumOccupied());
Assert.IsTrue(b.CheckInvariants());
b.Set(u, Matrix4x4.identity);
// w, v, u
Assert.AreEqual(3, b.GetNumOccupied());
Assert.IsTrue(b.CheckInvariants());
b.Clear(u);
b.Clear(v);
b.Clear(w);
Assert.AreEqual(0, b.GetNumOccupied());
Assert.IsTrue(b.CheckInvariants());
}
// TODO possible optimization: keep a pool of rendering blocks, so if we
// fully clear a block, we don't just toss it to garbage or leave the
// memory wasted.
public void Clear(Int3 u)
{
Int3 blockNum = Int3.Floor(u / Lf);
RenderingBlock block = null;
if (!blocksTable.TryGetValue(blockNum, out block))
{
return;
}
Int3 blockCell = u - (blockNum * L);
Debug.Assert(blockCell.x >= 0);
Debug.Assert(blockCell.x < L);
Debug.Assert(blockCell.y >= 0);
Debug.Assert(blockCell.y < L);
Debug.Assert(blockCell.z >= 0);
Debug.Assert(blockCell.z < L);
block.Clear(blockCell);
// TODO if a block is totally cleared, free it (back into a pool!)
}