Graphics Reference
In-Depth Information
visual appearance. More than the other types of materials, transparent materials rely heavily on reflection
and diffuse values. Take the example of a basic transparent material with no diffuse or reflection values. The
Transparent Amount is set to 90% with a Refractive Index of 1.517 (Zinc Crown Glass). This is shown in
Figure 6-39:
A basic transparent material does little to define the contours of the model.
Transparency tends to decrease as the incidence angle moves away from the viewer (the opposite of re-
flection). Because transparency does not offer a Fresnel effect this has to be done with gradients. To start,
