Boolean Operations
Boolean polygonal operations aren’t popular among 3D modelers
because they reconfigure your mesh and often this configuration
isn’t topologically correct. This means that when you smooth your
Boolean-operated mesh, it will probably have some mesh flaws.
Sometimes you don’t even have to smooth your mesh to see its
flaws. However, in some circumstances, Boolean operations can be
useful (otherwise, they probably wouldn’t be included in most 3D
packages as a tool). The golden rule is: If you can avoid using
Boolean operations, avoid them. But if you can’t, be sure to do
everything you can to check and correct all the flaws in your mesh.
See Chapter 3 for more information about Booleans.
A Boolean operation is one that, given an A object and a B
object (as shown in Figure 1-26), creates a new shape. Boolean
operations include subtraction, union, and intersection.
15
Chapter 1 – Polygonal System Basics
Figure 1-26
Figure 1-27: Boolean subtraction.
Figure 1-28: Boolean subtraction.
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