You are here: Home Resources cgSource Instructional Materials Slide Sets data 1993_Radiosity 3.txt
Document Actions

3.txt

by WebSysAdmin last modified 2006-09-13 10:57

Click here to get the file

Size 1 kB - File type text/plain

File contents

Direct and Indirect Light.

Every surface in an environment is illuminated by a combination of
'direct light' and 'reflected light'.  

The direct light is light energy which comes directly from a light source
or light sources, attenuated only by some interposed media, such as
smoke, fog or dust.  The reflected light is light energy which, after
being emitted from a light source, is reflected from one or more
surfaces in the  environment, and may then arrive at other surfaces. 

When light energy is reflected from a surface it is attenuated by the
'reflectivity' of the surface, as some of the light energy may be
absorbed by the surface, and some may pass through the surface. 
The reflectivity of a surface is often defined as its color.

Powered by Plone CMS, the Open Source Content Management System

This site conforms to the following standards: