Chapter 16

Polygonal Techniques

“It is indeed wonderful that so simple a figure

as the triangle is so inexhaustible.”

—Leopold Crelle

Up to this point, we have assumed that the model we rendered is available in exactly the format we need, and with just the right amount of detail. In reality, we are rarely so lucky. Modelers and data capture devices have their own particular quirks and limitations, giving rise to ambiguities and errors within the data set, and so within renderings. Often trade-offs are made among storage size, rendering efficiency, and quality of the results. In this chapter we discuss a variety of problems that are encountered within polygonal data sets, along with some of the fixes and workarounds for these problems. We ...

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