Mathematica Animation Problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg35432] Mathematica Animation Problem*From*: tofesi at web.de (Tobi)*Date*: Fri, 12 Jul 2002 04:28:49 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Dear all, I hope someone can give me advice concerning the following Mathematica (Version 4.1) problem: I am trying to produce an animation of a circular "walk" around a 3D plot. I get the animation, but it looks like sometimes I get nearer to the plot and sometimes the plot looks more distant, so that I don't get the impression of walking on a circle. My guess is that I have not yet understood how the options "ViewCenter" and "ViewPoint" work. So here is what I wrote to produce the image sequence: For [alpha = 0.0, alpha < 2 Pi, alpha = alpha + 0.1, Plot3D[ Exp[-(x^2 + y^2)], {x, -2, 2}, {y, -2, 2}, {ViewCenter -> {0, 0, 0}, ViewPoint -> {5 Cos[alpha], 5 Sin[alpha], 0.5}}]] So all viewpoints should lie on a circle of radius 5 around the origin and with a constant height of 0.5. But the visual impression is different, as decribed above. Anyone knows what's wrong? Thanks in advance, Tobi