02/21/2002
15-462 Graphics I
4
B-Splines
•Use 4 points, but approximate only middle two
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•Draw curve with overlapping segments
•    0-1-2-3, 1-2-3-4, 2-3-4-5, 3-4-5-6, etc.
•Curve may miss all control points
•Smoother at joint points