On Thu, 2 Mar 2006, Robert Scott wrote:
Have you looked at tabread4~ ? From its description as a '4 point interpolation', I've always assumed it to be a cubic bezier spline.
It's a cubic but not a Bézier: a Bézier would use 2 points plus the derivatives at those points. To identify a cubic you always need to get 4 values but they don't have to be points. When all you have is points and not derivatives, the best you can do is get 4 points and do some kind of non-Bézier cubic with it. Conversely, when you have 4 points you can always build a cubic with it.
_ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju | Freelance Digital Arts Engineer, Montréal QC Canada