Open source model by Yasutoshi "Mirage" Mori Creative Commons Attribution 4.0 International License Blender source file available at: https://github.com/lighttransport/lighttransportequation-orb Converted to OBJ and G3D format by Kenny Jones and Morgan McGuire http://cs.williams.edu/~morgan Preview render by Syoyo Fujita https://github.com/lighttransport/lighttransportequation-orb