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ym
07-17-2001, 05:06 AM
I want to draw a sheet, which can be twisted in any angle, my question is how to caculate the control points?

Rob The Bloke
07-17-2001, 05:40 PM
1. Free-Form-Deformations (FFD's).

Before reading up on this, make sure you know all about bezier curves & other parametric curves.... this is a tad bit mind blowing when you look at it.

It basically creates a 3D volume around an object and will transform the points within it depending on how you transform the surface.

2. Cloth (physical simulation)

Model each vertex as a particle and use some nice complex physical model to work out the behaviour of the particles.

These are both quite challenging though....