What I am trying to do seemed so simple at first - assign a movement vector to a large subsection of the surface area of a sphere.
The project I'm working on is a (very) simple simulation of tectonic plates.
I have a sphere defined in spherical polar coordinates (R, theta (longtitude - 0 - 360), phi (latitude 180 - 0)).
I also have large portions of the surface of the sphere randomly broken up into several 'plates'.
Initially, my thought was to simply assign a movement vector in terms of theta and phi to each plate.
However, it quickly becomes obvious that will not work. e.g. consider a plate that covers the 'north pole' area. If it is assigned a positive phi value for movement then the whole plate will spread outward from the pole. Clearly not what I want.
So - any ideas how I can do it?
Note that the solution needs to be fairly simply to transform into phi/theta values for a given point in order to apply the motion.
Any questions, clarification needed, etc. Please let me know.