Re: Stopping Automatic Animation in v6

*To*: mathgroup at smc.vnet.net*Subject*: [mg76765] Re: Stopping Automatic Animation in v6*From*: "Brian Gladman" <brg at nowhere.org>*Date*: Sun, 27 May 2007 04:48:58 -0400 (EDT)*References*: <f36d9n$5q2$1@smc.vnet.net> <f38s5g$icv$1@smc.vnet.net>

"Jean-Marc Gulliet" <jeanmarc.gulliet at gmail.com> wrote in message news:f38s5g$icv$1 at smc.vnet.net... > Brian Gladman wrote: >> I am trying to visualise the exact relationship between some 3D objects >> by >> using Graphics3D to display them. But as soon as I evaluate the >> expression, >> Mathematica 6 goes into some automated animation mode which destroys the >> relationship I am trying to set up since I need fixed objects viewed from >> a >> specified and fixed viewpoint. >> >> But I cannot find any option in Graphics3D to turn off this automatic >> animation. How do I force GraphicsÂ£D to display only what is asked for >> and >> not >> an animation of it? >> >> Any help with this would be much appreciated as its proving to be a real >> pain. >> >> Brian Gladman > > Brian, > > Could you, please, provide an example of an expression that behaves in > the incriminated way? By default, graphics (2D or 3D) are drawn static. > For example, evaluating > > Graphics3D[{Blue, Cylinder[], Red, Sphere[{0, 0, 2}], Black, Thick, > Dashed, Line[{{-2, 0, 2}, {2, 0, 2}, {0, 0, 4}, {-2, 0, 2}}], > Yellow, Polygon[{{-3, -3, -2}, {-3, 3, -2}, {3, > 3, -2}, {3, -3, -2}}], Green, Opacity[.3], > Cuboid[{-2, -2, -2}, {2, 2, -1}]}] > > draws several 3D objects without any animation. Hi Jean-Marc Here is an example that shows the issue. p = {{0, 0, 3 Sqrt[6]}, {-2 Sqrt[3], -6, -Sqrt[6]}, {-2 Sqrt[3], 6, -Sqrt[6]}, {4 Sqrt[3], 0, -Sqrt[6]}} Graphics3D[{{Line[{p[[1]], p[[2]]}], Line[{p[[1]], p[[3]]}], Line[{p[[1]], p[[4]]}], Line[{p[[2]], p[[3]]}], Line[{p[[2]], p[[4]]}], Line[{p[[3]], p[[4]]}]}}] The very first time this is evaluated after starting up Mathematica, it is static but all subsequent evaluations, for example, with a change of one of the lines, are then immediately dynamic. That is, animation starts as soon as the expression is re-evaluated. Moreover if I make a change in the expression and re-evaluate it, the graphic animation continues from the last position it reached and not from the initial position set by the expression re-evaluation. What I am looking for is a switch to simply say that for this particular object animation should not be undertaken. > Or are you talking about the new real-time feature that allows the user > to rotate or expand or shrink 3D graphics with the mouse? I think it is related to this in some way. These are great new capabilities but it is not obvious to me how I can switch them on and off. Thanks for taking an interest in the issue. best regards, Brian

**Follow-Ups**:**Re: Re: Stopping Automatic Animation in v6***From:*Murray Eisenberg <murray@math.umass.edu>