27 May
2006
27 May
'06
5:16 p.m.
On Fri, 26 May 2006, thewade wrote:
I built a simple wave shaper - its real easy - but making non uniform ration b-splines (or any other type of b-spline) would be difficult to implement in PD well unless you know C.
There exists an equivalence between b-splines and béziers. Use this matrix:
[1 4 1 0; 0 4 2 0; 0 2 4 0; 0 1 4 1] / 6
it can convert b-spline points to bézier points of the same curve... or maybe it does the other way around.
i took the matrix from "Interactive Computer Graphics" by Edward Angel.
_ _ __ ___ _____ ________ _____________ _____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju | Freelance Digital Arts Engineer, Montréal QC Canada