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Revision 1.17 by greg, Fri Jul 15 20:59:36 2011 UTC vs.
Revision 1.26 by greg, Tue Jun 26 14:42:18 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="aBSDF">
1158 +        <b>aBSDF</b>
1159 +        </a>
1160 +
1161 + <dd>
1162 +        The aBSDF 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 +        aBSDF is assumed to have some specular through component
1166 +        (the &rsquo;a&rsquo; stands for &quot;aperture&quot;),
1167 +        which is treated specially during the direct calculation
1168 +        and when viewing the material.  Based on the BSDF data, the
1169 +        coefficient of specular transmission is determined and used
1170 +        for modifying unscattered shadow and view rays.
1171 +
1172 + <pre>
1173 +        mod aBSDF id
1174 +        5+ BSDFfile ux uy uz funcfile transform
1175 +        0
1176 +        0|3|6|9
1177 +             rfdif gfdif bfdif
1178 +             rbdif gbdif bbdif
1179 +             rtdif gtdif btdif
1180 + </pre>
1181 +
1182 + <p>
1183 +        If a material has no specular transmitted component, it is
1184 +        much better to use the BSDF type with a zero thickness
1185 +        than to use aBSDF.
1186 + <p>
1187 +
1188 + <dt>
1189          <a NAME="Antimatter">
1190          <b>Antimatter</b>
1191          </a>
# Line 1414 | Line 1469 | or:
1469   </h4>
1470  
1471   A mixture is a blend of one or more materials or textures and patterns.
1472 + Blended materials should not be light source types or virtual source types.
1473   The basic types are given below.
1474  
1475   <p>
# Line 1486 | Line 1542 | A mixfunc mixes  two  modifiers  procedurally.   It  i
1542          arguments, the red, green and blue values
1543          corresponding to the pixel at (u,v).
1544  
1489 – </dl>
1545   <p>
1546  
1547   <dt>
# Line 1788 | Line 1843 | Pictures may be displayed directly under X11 using the
1843   or converted a standard image format using one of the following
1844   <b>translators</b>:
1845          <ul>
1846 <        <li> <b>Ra_avs</b>
1847 <                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.
1846 >        <li> <a HREF="../man_html/ra_bmp.1.html"><b>Ra_bmp</b>
1847 >                converts to and from BMP image format.
1848          <li> <a HREF="../man_html/ra_ppm.1.html"><b>Ra_ppm</b></a>
1849                  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.
1850          <li> <a HREF="../man_html/ra_ps.1.html"><b>Ra_ps</b></a>
1851                  converts to PostScript color and greyscale formats.
1852          <li> <a HREF="../man_html/ra_rgbe.1.html"><b>Ra_rgbe</b></a>
# Line 1823 | Line 1872 | or converted a standard image format using one of the
1872   <pre>
1873   The Radiance Software License, Version 1.0
1874  
1875 < Copyright (c) 1990 - 2010 The Regents of the University of California,
1875 > Copyright (c) 1990 - 2014 The Regents of the University of California,
1876   through Lawrence Berkeley National Laboratory.   All rights reserved.
1877  
1878   Redistribution and use in source and binary forms, with or without
# Line 1896 | Line 1945 | Ecole  Polytechnique  Federale de Lausanne (EPFL Unive
1945   </h2>
1946   <p>
1947   <ul>
1948 +    <li>McNeil, A., C.J. Jonsson, D. Appelfeld, G. Ward, E.S. Lee,
1949 +        &quot;<a href="http://gaia.lbl.gov/btech/papers/4414.pdf">
1950 +        A validation of a ray-tracing tool used to generate
1951 +        bi-directional scattering distribution functions for
1952 +        complex fenestration systems</a>,&quot;
1953 +        <em>Solar Energy</em>, 98, 404-14,
1954 +        November 2013.
1955      <li>Ward, G., R. Mistrick, E.S. Lee, A. McNeil, J. Jonsson,
1956          &quot;<a href="http://gaia.lbl.gov/btech/papers/4414.pdf">Simulating
1957          the Daylight Performance of Complex Fenestration Systems
1958          Using Bidirectional Scattering Distribution Functions within
1959          Radiance</a>,&quot;
1960 <        <em>Journal of the Illuminating Engineering Soc. of North America</em>,
1960 >        <em>Leukos</em>, 7(4)
1961          April 2011.
1962      <li>Cater, Kirsten, Alan Chalmers, Greg Ward,
1963          &quot;<a href="http://www.anyhere.com/gward/papers/egsr2003.pdf">Detail to Attention:

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