Dimension THANKS file - POV-Ray (http://povray.org/) inspired this project, and in fact Dimension could be considered my effort to write the next generation of the POV-Ray renderer. POV-Ray is copyright Persistence of Vision Raytracer Pty. Ltd. - Python 3 (http://python.org/) is copyright the Python Software Foundation. - The PR-tree bounding hierarchy is due to Lars Arge, Mark de Berg, Herman J. Haverkort, and Ke Yi.