Introduction
This page provides the source code for a node called cutrVelvet. It applies coloration
to the edge of a curved surface based on the dot product of the viewing vector
and the surface normal of an object. Refer to the tutorial,
RSL: Edge Effects
for basic information about the technique of using the dot product.
Figures 1 and 2 show a simple blobby surface shaded with RMSMatte. The edge
coloration seen in figure 2 was produce by wiring the Surface Color parameter
of RMSMatte to cutrVelvet (figure 3).
Figure 1 - plain shading
Figure 2 - fake edge effect
Figure 3