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<h1>clay.cpp</h1><a href="clay_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment">    pbrt source code Copyright(c) 1998-2007 Matt Pharr and Greg Humphreys.</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment">    This file is part of pbrt.</span>
<a name="l00006"></a>00006 <span class="comment"></span>
<a name="l00007"></a>00007 <span class="comment">    pbrt is free software; you can redistribute it and/or modify</span>
<a name="l00008"></a>00008 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
<a name="l00009"></a>00009 <span class="comment">    the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00010"></a>00010 <span class="comment">    (at your option) any later version.  Note that the text contents of</span>
<a name="l00011"></a>00011 <span class="comment">    the book "Physically Based Rendering" are *not* licensed under the</span>
<a name="l00012"></a>00012 <span class="comment">    GNU GPL.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">    pbrt is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00017"></a>00017 <span class="comment">    GNU General Public License for more details.</span>
<a name="l00018"></a>00018 <span class="comment"></span>
<a name="l00019"></a>00019 <span class="comment">    You should have received a copy of the GNU General Public License</span>
<a name="l00020"></a>00020 <span class="comment">    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment"> */</span>
<a name="l00023"></a>00023 
<a name="l00024"></a>00024 <span class="comment">// clay.cpp*</span>
<a name="l00025"></a>00025 <span class="preprocessor">#include "<a class="code" href="pbrt_8h.html">pbrt.h</a>"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="material_8h.html">material.h</a>"</span>
<a name="l00027"></a>00027 <span class="comment">// Clay Class Declarations</span>
<a name="l00028"></a><a class="code" href="classClay.html">00028</a> <span class="keyword">class </span><a class="code" href="classClay.html">Clay</a> : <span class="keyword">public</span> <a class="code" href="classMaterial.html">Material</a> {
<a name="l00029"></a>00029 <span class="keyword">public</span>:
<a name="l00030"></a><a class="code" href="classClay.html#b5985b64b6cb3baef86b1dd29e60c101">00030</a>         <a class="code" href="classClay.html#b5985b64b6cb3baef86b1dd29e60c101">Clay</a>(<a class="code" href="classReference.html">Reference</a>&lt;<a class="code" href="classTexture.html">Texture&lt;float&gt;</a> &gt; bump) : <a class="code" href="classClay.html#2ed2be9b79fae18e16c54495811c8647">bumpMap</a>(bump) { }
<a name="l00031"></a>00031         <a class="code" href="classBSDF.html">BSDF</a> *<a class="code" href="classClay.html#8ccf160c48651fbe715fb41ab7b9268f">GetBSDF</a>(<span class="keyword">const</span> <a class="code" href="structDifferentialGeometry.html">DifferentialGeometry</a> &amp;dgGeom, <span class="keyword">const</span> <a class="code" href="structDifferentialGeometry.html">DifferentialGeometry</a> &amp;dgShading) <span class="keyword">const</span>; <span class="comment">// NOBOOK</span>
<a name="l00032"></a>00032 <span class="keyword">private</span>:
<a name="l00033"></a><a class="code" href="classClay.html#2ed2be9b79fae18e16c54495811c8647">00033</a>         <a class="code" href="classReference.html">Reference&lt;Texture&lt;float&gt;</a> &gt; <a class="code" href="classClay.html#2ed2be9b79fae18e16c54495811c8647">bumpMap</a>;
<a name="l00034"></a>00034 };
<a name="l00035"></a>00035 
<a name="l00036"></a>00036 <span class="comment">// Clay Method Definitions</span>
<a name="l00037"></a><a class="code" href="classClay.html#8ccf160c48651fbe715fb41ab7b9268f">00037</a> <a class="code" href="classBSDF.html">BSDF</a> *<a class="code" href="classClay.html#8ccf160c48651fbe715fb41ab7b9268f">Clay::GetBSDF</a>(<span class="keyword">const</span> <a class="code" href="structDifferentialGeometry.html">DifferentialGeometry</a> &amp;dgGeom, <span class="keyword">const</span> <a class="code" href="structDifferentialGeometry.html">DifferentialGeometry</a> &amp;dgShading)<span class="keyword"> const </span>{
<a name="l00038"></a>00038         <span class="comment">// Declare clay coefficients</span>
<a name="l00039"></a>00039         <span class="keyword">static</span> <span class="keywordtype">float</span> diffuse[3] = {   0.383626<a class="code" href="classBSDF.html#137c0efa679347a2787b366effdeeb50">f</a>,   0.260749f,   0.274207f };
<a name="l00040"></a>00040         <span class="keyword">static</span> <span class="keywordtype">float</span> xy0[3] =     {  -1.089701f,  -1.102701f,  -1.107603f };
<a name="l00041"></a>00041         <span class="keyword">static</span> <span class="keywordtype">float</span> z0[3] =      {  -1.354682f,  -2.714801f,  -1.569866f };
<a name="l00042"></a>00042         <span class="keyword">static</span> <span class="keywordtype">float</span> e0[3] =      {  17.968505f,  11.024489f,  21.270282f };
<a name="l00043"></a>00043         <span class="keyword">static</span> <span class="keywordtype">float</span> xy1[3] =     {  -0.733381f,  -0.793320f,  -0.848206f };
<a name="l00044"></a>00044         <span class="keyword">static</span> <span class="keywordtype">float</span> z1[3] =      {   0.676108f,   0.679314f,   0.726031f };
<a name="l00045"></a>00045         <span class="keyword">static</span> <span class="keywordtype">float</span> e1[3] =      {   8.219745f,   9.055139f,  11.261951f };
<a name="l00046"></a>00046         <span class="keyword">static</span> <span class="keywordtype">float</span> xy2[3] =     {  -1.010548f,  -1.012378f,  -1.011263f };
<a name="l00047"></a>00047         <span class="keyword">static</span> <span class="keywordtype">float</span> z2[3] =      {   0.910783f,   0.885239f,   0.892451f };
<a name="l00048"></a>00048         <span class="keyword">static</span> <span class="keywordtype">float</span> e2[3] =      { 152.912795f, 141.937171f, 201.046802f };
<a name="l00049"></a>00049         <span class="keyword">static</span> <a class="code" href="classSpectrum.html">Spectrum</a> xy[3] = { <a class="code" href="classSpectrum.html">Spectrum</a>(xy0), <a class="code" href="classSpectrum.html">Spectrum</a>(xy1), <a class="code" href="classSpectrum.html">Spectrum</a>(xy2) };
<a name="l00050"></a>00050         <span class="keyword">static</span> <a class="code" href="classSpectrum.html">Spectrum</a> z[3] = { <a class="code" href="classSpectrum.html">Spectrum</a>(z0), <a class="code" href="classSpectrum.html">Spectrum</a>(z1), <a class="code" href="classSpectrum.html">Spectrum</a>(z2) };
<a name="l00051"></a>00051         <span class="keyword">static</span> <a class="code" href="classSpectrum.html">Spectrum</a> e[3] = { <a class="code" href="classSpectrum.html">Spectrum</a>(e0), <a class="code" href="classSpectrum.html">Spectrum</a>(e1), <a class="code" href="classSpectrum.html">Spectrum</a>(e2) };
<a name="l00052"></a>00052         <span class="comment">// Allocate _BSDF_, possibly doing bump-mapping with _bumpMap_</span>
<a name="l00053"></a>00053         <a class="code" href="structDifferentialGeometry.html">DifferentialGeometry</a> dgs;
<a name="l00054"></a>00054         <span class="keywordflow">if</span> (<a class="code" href="classClay.html#2ed2be9b79fae18e16c54495811c8647">bumpMap</a>)
<a name="l00055"></a>00055                 <a class="code" href="classMaterial.html#c3e544e3e58d1044b82da2993d412bef">Bump</a>(<a class="code" href="classClay.html#2ed2be9b79fae18e16c54495811c8647">bumpMap</a>, dgGeom, dgShading, &amp;dgs);
<a name="l00056"></a>00056         <span class="keywordflow">else</span>
<a name="l00057"></a>00057                 dgs = dgShading;
<a name="l00058"></a>00058         <a class="code" href="classBSDF.html">BSDF</a> *bsdf = <a class="code" href="reflection_8h.html#3bf385d77eb4b6df8e24ace1df730cc2">BSDF_ALLOC</a>(<a class="code" href="classBSDF.html">BSDF</a>)(dgs, dgGeom.<a class="code" href="structDifferentialGeometry.html#1aa044f6c7b053ca460c10b0cf832c14">nn</a>);
<a name="l00059"></a>00059         bsdf-&gt;<a class="code" href="classBSDF.html#92c90b4b7eeff9a877f25faa80d616ee">Add</a>(<a class="code" href="reflection_8h.html#3bf385d77eb4b6df8e24ace1df730cc2">BSDF_ALLOC</a>(<a class="code" href="classLafortune.html">Lafortune</a>)(<a class="code" href="classSpectrum.html">Spectrum</a>(diffuse), 3, xy, xy, z, e,
<a name="l00060"></a>00060                 <a class="code" href="reflection_8h.html#0ab5fa7d70a51348af4188bf1e669730">BxDFType</a>(<a class="code" href="reflection_8h.html#0ab5fa7d70a51348af4188bf1e6697304331da0ab7ddceadcfffa81ecf70577e">BSDF_REFLECTION</a> | <a class="code" href="reflection_8h.html#0ab5fa7d70a51348af4188bf1e669730f9e3fbf437624bc9cbe69860ff6c7b80">BSDF_DIFFUSE</a>)));
<a name="l00061"></a>00061         <span class="keywordflow">return</span> bsdf;
<a name="l00062"></a>00062 }
<a name="l00063"></a><a class="code" href="clay_8cpp.html#408b27babfc96df09044b99cd96a3d8b">00063</a> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> <a class="code" href="pbrt_8h.html#808e08638be3cba36e36759e5b150de0">DLLEXPORT</a> <a class="code" href="classMaterial.html">Material</a> * <a class="code" href="bluepaint_8cpp.html#408b27babfc96df09044b99cd96a3d8b">CreateMaterial</a>(<span class="keyword">const</span> <a class="code" href="classTransform.html">Transform</a> &amp;xform,
<a name="l00064"></a>00064                 <span class="keyword">const</span> <a class="code" href="classTextureParams.html">TextureParams</a> &amp;mp) {
<a name="l00065"></a>00065         <a class="code" href="classReference.html">Reference&lt;Texture&lt;float&gt;</a> &gt; <a class="code" href="classClay.html#2ed2be9b79fae18e16c54495811c8647">bumpMap</a> = mp.<a class="code" href="classTextureParams.html#d416140fa1530ed88480419f79be07e0">GetFloatTexture</a>(<span class="stringliteral">"bumpmap"</span>, 0.f);
<a name="l00066"></a>00066         <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classClay.html#b5985b64b6cb3baef86b1dd29e60c101">Clay</a>(bumpMap);
<a name="l00067"></a>00067 }
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