ABSTRACT
Catmull-Clark subdivision surfaces, or SubDs, are smooth surfaces defined by bicubic B-spline patches extracted from a recursively subdivided control mesh of arbitrary topology [Catmull and Clark 78]. SubDs are widely used in animated film production and have recently been used in games [Brainerd 14]. They are valued for their intuitive authoring tools and the quality of the resultant surface (Figure 2.1).
