- parallel point
- A light source that illuminates objects with parallel light. The light's orientation is taken from the position of the parallel-point light source. For example, two meshes on both sides of a parallel point light source are lit on the side that faces the position of the source.
- penumbra
- The outer, dimly lit section of a spotlight's cone of light. The penumbra surrounds the umbra and merges with the surrounding deep shadow. See also umbra and spotlight.
- point
- A light source that radiates equally in all directions from its origin.
- power
- In the specular property of a material, the value that determines the sharpness of specular highlights. A value of five gives a metallic appearance, and higher values give a more plastic appearance.
Top of Page
© 2000 Microsoft and/or its suppliers. All rights reserved. Terms of Use.