11
votes
1answer
448 views

Animating moving surface of torus

I would like to try to recreate something similar to Paolo Čerić's torus animation: I have isolated the moving surface torus section form this Wolfram Demonstration by Kevin Sonnanburg: ...
25
votes
2answers
942 views

Sketch-type graphics with transparency and dashed hidden lines?

I'd like to create transparent graphs like the following from P1095, Calculus 6th Ed, by James Stewart. Can Mathematica accomplish this? By "transparent," I mean the ability to see the interior, ...
3
votes
3answers
215 views

Colorize a 3D distribution of points according to density

Suppose we have some random 3D distribution of points. I'll use the spherical ball defined below as an example and a starting point for the discussion here : ...
2
votes
1answer
356 views

Radial Random Walk

I'm trying to generate a spherical distribution of radial random walk points in 3D space. The following code works, but the random walk lines aren't radial. Why ? Where is my mistake ? ...