In J602 load jpath '~system\examples\graphics\opengl\lab\ogl_cube.ijs' gl3lab_run''
...draws a rotatable cube, with some of the faces coloured. Has anyone successfully extended this demo to draw a rotatable tesseract? My son would like to see such a demo. He is intrigued by the theory that there's nothing 3D in the human visual cortex, apart from long exposure to a (tactile) 3D world, and one can soon learn to manipulate 4D objects almost as well. He'd like to test it out with his class. (An experiment first performed by neuroscientist D M MacKay in the 1950s, if I recall?) ---- BTW I note these relevant threads and am about to study them in greater depth than hitherto... [Jprogramming] cubes (started by Raul Miller, 4/1/10) [Jgeneral] gtkide graph package using gl2 emulation (started by Bill Lam Feb 28). >From these I dimly gather OpenGL is now available in JGTK on most platforms, but not Mac yet (which stymies me). So in theory ogl_cube.ijs will work (--or can be made to, by replacing isigraph)? It also occurs to me it may turn out a lot easier to work with 3D projections using a 2D package (gl2 emulation?) and then extend this to 4D rather than start with a 3D package (OpenGL) and work with tesseract projections into 3-space. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
