02/21/2002
15-462 Graphics I
20
Geometric Bezier Subdivision
•Can also calculate geometrically
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•l1 = ½(p0 + p1), r2 = ½ (p2 + p3)
•l2 = ½ (l1 + ½ (p1 + p2)), r1 = ½ (r2 + ½(p1 + p2))
•l3 = r0 = ½ (l2 + r1), l0 = p0, r3 = p3