Set-Theoretic Modelling

• 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. 38).

 

Fig. 38 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. 39 Set operators