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Revision 1.4 by greg, Thu Oct 21 16:16:14 2004 UTC vs.
Revision 1.6 by greg, Wed May 10 19:50:30 2006 UTC

# Line 1 | Line 1
1   <html>
2   <head>
3   <title>
4 < The RADIANCE 3.6 Synthetic Imaging System
4 > The RADIANCE 3.7 Synthetic Imaging System
5   </title>
6   </head>
7   <body>
# Line 9 | Line 9 | The RADIANCE 3.6 Synthetic Imaging System
9   <p>
10  
11   <h1>
12 < The RADIANCE 3.6 Synthetic Imaging System
12 > The RADIANCE 3.7 Synthetic Imaging System
13   </h1>
14  
15   <p>
# Line 564 | Line 564 | A material defines the way light interacts with a  sur
564          </a>
565  
566   <dd>
567 <        Mirror is used for planar surfaces that produce  secondary source reflections.  
567 >        Mirror is used for planar surfaces that produce  virtual source reflections.  
568          This material should be used sparingly, as it may cause the light source calculation to  blow up  if  it is applied to many small surfaces.  
569          This material is only supported for flat surfaces  such  as  <a HREF="#Polygon">polygons</a>  and <a HREF="#Ring">rings</a>.  
570          The arguments are simply the RGB reflectance values, which should be between 0 and 1.  
# Line 587 | Line 587 | This is only appropriate if the surface hides other (m
587          </a>
588  
589   <dd>
590 <        The prism1 material is for  general  light  redirection from prismatic glazings, generating secondary light sources.
590 >        The prism1 material is for  general  light  redirection from prismatic glazings, generating virtual light sources.
591          It can only be used  to  modify  a  planar  surface  
592          (i.e.,  a <a HREF="#Polygon">polygon</a>  or <a HREF="#Ring">disk</a>)
593          and should not result in either light concentration or scattering.  
594          The new direction of the ray  can be  on either side of the material,
595 <        and the definitions must have the correct bidirectional properties to  work  properly with  secondary light sources.  
595 >        and the definitions must have the correct bidirectional properties to  work  properly with virtual light sources.  
596          The arguments give the coefficient for the redirected light and its direction.
597  
598   <pre>

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