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- Also widely known as computational solid geometry (CSG).
- Model is composed of primitive shapes, such as rectangular boxes, spheres,
cylinders and cones,
- Assembled with set operators
- Represent model as a
tree structure (Fig. 48).
Fig. 48 A set-theoretic model
- Set operators used similar to those of
Boolean logic.
- Operators used are:
- union -- Boolean OR,
- intersection -- Boolean AND,
- difference -- Boolean NOT,
Fig. 49 Set operators
David Marshall 1994-1997