Compute S(u,v) using a two-step construction • p2 p3 v p0 u p1 12 Bilinear Patch (step 1) • For a given value of u, evaluate the linear curves on the two udirection edges. Use the same value u for both: • q0=Lerp(u,p0,p1) p2 q1 q1=Lerp(u,p2,p3) p3 v p0q0 u p1 13 Bilinear Patch (step 2) • Consider that q0, q1 define a line segment.
