02/19/2002
15-462 Graphics I
18
Blending Functions
•Make
explicit, how control points contribute
•Simplest
example: straight line with control points p0 and p3
•p(u) =
(1 – u) p0 + u p3
•b0(u)
= 1 – u, b3(u) = u
1
1
b3(u)
b0(u)
u