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Revision 1.25 by greg, Mon Jun 25 20:49:10 2018 UTC

# Line 1 | Line 1
1   <html>
2 + <!-- RCSid $Id$ -->
3   <head>
4   <title>
5 < The RADIANCE 4.1 Synthetic Imaging System
5 > The RADIANCE 5.2 Synthetic Imaging System
6   </title>
7   </head>
8   <body>
# Line 9 | Line 10 | The RADIANCE 4.1 Synthetic Imaging System
10   <p>
11  
12   <h1>
13 < The RADIANCE 4.1 Synthetic Imaging System
13 > The RADIANCE 5.2 Synthetic Imaging System
14   </h1>
15  
16   <p>
# Line 797 | Line 798 | unless the line integrals consider enclosed geometry.
798  
799   <dd>
800          Trans2 is the anisotropic version of <a HREF="#Trans">trans</a>.  
801 <        The string arguments  are  the same as for plastic2, and the real arguments are the same as  for  trans  but  with  an  additional roughness value.
801 >        The string arguments  are  the same as for <a HREF="#Plastic2">plastic2</a>,
802 >        and the real arguments are the same as  for  trans  but  with  an  additional roughness value.
803  
804   <pre>
805          mod trans2 id
# Line 809 | Line 811 | unless the line integrals consider enclosed geometry.
811   <p>
812  
813   <dt>
814 +        <a NAME="Ashik2">
815 +        <b>Ashik2</b>
816 +        </a>
817 +
818 + <dd>
819 +        Ashik2 is the anisotropic reflectance model by Ashikhmin & Shirley.
820 +        The string arguments are the same as for <a HREF="#Plastic2">plastic2</a>, but the real
821 +        arguments have additional flexibility to specify the specular color.
822 +        Also, rather than roughness, specular power is used, which has no
823 +        physical meaning other than larger numbers are equivalent to a smoother
824 +        surface.
825 + <pre>
826 +        mod ashik2 id
827 +        4+ ux uy uz funcfile transform
828 +        0
829 +        8 dred dgrn dblu sred sgrn sblu u-power v-power
830 + </pre>
831 +
832 + <p>
833 +
834 + <dt>
835          <a NAME="Dielectric">
836          <b>Dielectric</b>
837          </a>
# Line 1131 | Line 1154 | unless the line integrals consider enclosed geometry.
1154   <p>
1155  
1156   <dt>
1157 +        <a NAME="sBSDF">
1158 +        <b>sBSDF</b>
1159 +        </a>
1160 +
1161 + <dd>
1162 +        The sBSDF material is identical to the BSDF type with two
1163 +        important differences.  First, proxy geometry is not
1164 +        supported, so there is no thickness parameter.  Second, an
1165 +        sBSDF is assumed to have some specular through component,
1166 +        which is treated specially during the direct calculation
1167 +        and when viewing the material.  Based on the BSDF data, the
1168 +        coefficient of specular transmission is determined and used
1169 +        for modifying unscattered shadow and view rays.
1170 +
1171 + <pre>
1172 +        mod sBSDF id
1173 +        5+ BSDFfile ux uy uz funcfile transform
1174 +        0
1175 +        0|3|6|9
1176 +             rfdif gfdif bfdif
1177 +             rbdif gbdif bbdif
1178 +             rtdif gtdif btdif
1179 + </pre>
1180 +
1181 + <p>
1182 +        If a material has no specular transmitted component, it is
1183 +        much better to use the BSDF type with a zero thickness
1184 +        than to use sBSDF.
1185 + <p>
1186 +
1187 + <dt>
1188          <a NAME="Antimatter">
1189          <b>Antimatter</b>
1190          </a>
# Line 1414 | Line 1468 | or:
1468   </h4>
1469  
1470   A mixture is a blend of one or more materials or textures and patterns.
1471 + Blended materials should not be light source types or virtual source types.
1472   The basic types are given below.
1473  
1474   <p>
# Line 1486 | Line 1541 | A mixfunc mixes  two  modifiers  procedurally.   It  i
1541          arguments, the red, green and blue values
1542          corresponding to the pixel at (u,v).
1543  
1489 – </dl>
1544   <p>
1545  
1546   <dt>
# Line 1788 | Line 1842 | Pictures may be displayed directly under X11 using the
1842   or converted a standard image format using one of the following
1843   <b>translators</b>:
1844          <ul>
1845 <        <li> <b>Ra_avs</b>
1846 <                converts to and from AVS image format.
1793 <        <li> <a HREF="../man_html/ra_pict.1.html"><b>Ra_pict</b></a>
1794 <                converts to Macintosh 32-bit PICT2 format.
1845 >        <li> <a HREF="../man_html/ra_bmp.1.html"><b>Ra_bmp</b>
1846 >                converts to and from BMP image format.
1847          <li> <a HREF="../man_html/ra_ppm.1.html"><b>Ra_ppm</b></a>
1848                  converts to and from Poskanzer Portable Pixmap formats.
1797 –        <li> <a HREF="../man_html/ra_pr.1.html"><b>Ra_pr</b></a>
1798 –                converts to and from Sun 8-bit rasterfile format.
1799 –        <li> <a HREF="../man_html/ra_pr24.1.html"><b>Ra_pr24</b></a>
1800 –                converts to and from Sun 24-bit rasterfile format.
1849          <li> <a HREF="../man_html/ra_ps.1.html"><b>Ra_ps</b></a>
1850                  converts to PostScript color and greyscale formats.
1851          <li> <a HREF="../man_html/ra_rgbe.1.html"><b>Ra_rgbe</b></a>
# Line 1823 | Line 1871 | or converted a standard image format using one of the
1871   <pre>
1872   The Radiance Software License, Version 1.0
1873  
1874 < Copyright (c) 1990 - 2010 The Regents of the University of California,
1874 > Copyright (c) 1990 - 2014 The Regents of the University of California,
1875   through Lawrence Berkeley National Laboratory.   All rights reserved.
1876  
1877   Redistribution and use in source and binary forms, with or without
# Line 1896 | Line 1944 | Ecole  Polytechnique  Federale de Lausanne (EPFL Unive
1944   </h2>
1945   <p>
1946   <ul>
1947 +    <li>McNeil, A., C.J. Jonsson, D. Appelfeld, G. Ward, E.S. Lee,
1948 +        &quot;<a href="http://gaia.lbl.gov/btech/papers/4414.pdf">
1949 +        A validation of a ray-tracing tool used to generate
1950 +        bi-directional scattering distribution functions for
1951 +        complex fenestration systems</a>,&quot;
1952 +        <em>Solar Energy</em>, 98, 404-14,
1953 +        November 2013.
1954      <li>Ward, G., R. Mistrick, E.S. Lee, A. McNeil, J. Jonsson,
1955 <        &quot;Simulating the Daylight Performance of Complex Fenestration Systems
1956 <        Using Bidirectional Scattering Distribution Functions within Radiance&quot;
1957 <        <em>Journal of the Illuminating Engineering Soc. of North America</em>,
1955 >        &quot;<a href="http://gaia.lbl.gov/btech/papers/4414.pdf">Simulating
1956 >        the Daylight Performance of Complex Fenestration Systems
1957 >        Using Bidirectional Scattering Distribution Functions within
1958 >        Radiance</a>,&quot;
1959 >        <em>Leukos</em>, 7(4)
1960          April 2011.
1961      <li>Cater, Kirsten, Alan Chalmers, Greg Ward,
1962          &quot;<a href="http://www.anyhere.com/gward/papers/egsr2003.pdf">Detail to Attention:

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