Decomposition models 19.1 Introduction Decomposition models are representations of solids via combinations(unions) of basic special building blocks glued together. Alternatively, decomposition models may be considered te represent solids in terms of a subdivision of space(see also Lecture 1 for more details on the classification of these models). Various types of decomposition models are created by various building blocks various combination methods used to create the model In order of increasing complexity, decomposition models are classified as follows 1. Exhaustive enumeration 2. Space subdivision 3. Cell decompositionDecomposition models 19.1 Introduction Decomposition models are representations of solids via combinations (unions) of basic special building blocks glued together. Alternatively, decomposition models may be considered to represent solids in terms of a subdivision of space (see also Lecture 1 for more details on the classification of these models). Various types of decomposition models are created by: • various building blocks • various combination methods used to create the model. In order of increasing complexity, decomposition models are classified as follows: 1. Exhaustive enumeration 2. Space subdivision 3. Cell decomposition 2