This is a little problem that has been bugging me, mainly because I'm not sure if it is or isn't possible to do. Please bear with me if my understanding of meshes/models is a bit vague.
We're trying to develop a "icosahedron geodesic sphere" world for our game, or a shere made up of triangles to simplify things!
Now, here is our problem... Whilst the game we would like to "extrude" faces of the sphere in order to procedurally create terrain. "Extrude" was used as that is the term for the function in Maya/3ds Max. Is it possible to somehow select a face/poly of a model and manipulate it? Ideally to be done in realtime?
(I have attached a picture of a model in Max. The extrusions, or transforms, are what we would like to do in realtime in XNA)
I can't find any information on this anywhere, so I cant tell if I'm searching in the wrong direction. Is there a keyword I can use to search for information that I might be missing?
Also, if I haven't made any sense, I'll do my best to re-explain what we're after.