is an open source 3D graphics and animation software.

  Examples of reflections on 8 spheres in cubic arrangement (by courtesy of Paul Tan-Rugh)

The spheres have been placed on a green plane. The sky is a blue hemi-sphere.

Photo Photo Photo

Movie (.avi) of a voyage inbetween the spheres: reflections_cube.avi  

The original blender file (should be opened with 'blender'): reflections_cube.blend