Description: straight of the cutting and painting, a free curve include : second, third Bezier curves, second, Third uniform B-spline curves; 2, Bezier curve algorithm selection requirements subdivision algorithm; 3. Uniform B-spline curve control over the end of the first polygon vertices; 4. B-spline curves of local control to dynamically change curve shape; 5, friendly interface design, visual geometry. Cutting Algorithm Selection Cohen-Sutherland algorithm;
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