6.4 Approaches to design with B-spline curves Design procedure A 1. Designer chooses knot vector and control point 2. Designer displays curve and tweaks control points to improve curve Design procedure B 1. Designer starts with data points on or near curve 2. Construct an interpolating/approximating B-spline curve 3. Display curve and tweak control points to improve curve6.4 Approaches to design with B-spline curves Design procedure A 1. Designer chooses knot vector and control points. 2. Designer displays curve and tweaks control points to improve curve. Design procedure B 1. Designer starts with data points on or near curve. 2. Construct an interpolating/approximating B-spline curve. 3. Display curve and tweak control points to improve curve. 10