02/19/2002
15-462 Graphics I
14
Interpolation by Cubic Polynomials
•Simplest case, although rarely used
•Curves:
–Given 4 control points p0, p1, p2, p3
–All should lie on curve: 12 conditions, 12 unknowns
•Space 0 · u · 1 evenly
•    p0 = p(0), p1 = p(1/3), p2 = p(2/3), p3 = p(1)