--- a/TODO	Tue Apr 22 13:33:12 2008 +0200
+++ b/TODO	Wed Apr 23 10:38:33 2008 +0200
@@ -7,10 +7,6 @@
  * textures (3D procedural, pixmaps)
  * generalization: Camera "shader" (ray generator), surface shader and maybe light & background shaders
  * namespace
- * kd-tree:
-   - optimize structures
-   - optimize construction: use box-shape intersection instead of bounding boxes of shapes
-   - save/load
  * Python binding for all classes
  * stochastic oversampling
  * absorbtion of refracted rays in dense materials (can be computed using shape distance and some 'absorbance' constant)