5. Curve and surface models
5.1 Basic models
The two most common types of models in CAD systems are :
Bézier curves and surfaces ;
B-spline curves and surfaces.
They can be declined in non-rational or rational form.
These models have properties that can be deduced from the mathematical model used. For example, you won't choose a B-spline or Bézier approach at random, depending on the type of application (although many parameters can be used to vary the influence of the control in both cases).
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Curve and surface models
Integrating surfaces into solid models
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