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classLight.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>pbrt: Light Class Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.6.2 -->
<div class="navigation" id="top">
<div class="tabs">
<ul>
<li><a href="index.html"><span>Main Page</span></a></li>
<li class="current"><a href="annotated.html"><span>Classes</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div class="tabs">
<ul>
<li><a href="annotated.html"><span>Class List</span></a></li>
<li><a href="hierarchy.html"><span>Class Hierarchy</span></a></li>
<li><a href="functions.html"><span>Class Members</span></a></li>
</ul>
</div>
</div>
<div class="contents">
<h1>Light Class Reference</h1><!-- doxytag: class="Light" -->
<p><code>#include <<a class="el" href="light_8h_source.html">light.h</a>></code></p>
<div class="dynheader">
Inheritance diagram for Light:</div>
<div class="dynsection">
<div class="center">
<img src="classLight.png" usemap="#Light_map" alt=""/>
<map id="Light_map" name="Light_map">
<area href="classAreaLight.html" alt="AreaLight" shape="rect" coords="148,56,286,80"/>
<area href="classDistantLight.html" alt="DistantLight" shape="rect" coords="148,112,286,136"/>
<area href="classGonioPhotometricLight.html" alt="GonioPhotometricLight" shape="rect" coords="148,168,286,192"/>
<area href="classInfiniteAreaLight.html" alt="InfiniteAreaLight" shape="rect" coords="148,224,286,248"/>
<area href="classInfiniteAreaLightIS.html" alt="InfiniteAreaLightIS" shape="rect" coords="148,280,286,304"/>
<area href="classPointLight.html" alt="PointLight" shape="rect" coords="148,336,286,360"/>
<area href="classProjectionLight.html" alt="ProjectionLight" shape="rect" coords="148,392,286,416"/>
<area href="classSpotLight.html" alt="SpotLight" shape="rect" coords="148,448,286,472"/>
</map>
</div>
</div>
<p><a href="classLight-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#ad0e59fad13bb6cfadc25b2c477e9ddc7">~Light</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#abaa3974f3a0906819bdaf849ef76e6a7">Light</a> (const <a class="el" href="classTransform.html">Transform</a> &l2w, int ns=1)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classSpectrum.html">Spectrum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#acc1f14dae6074cc9c16b7387020e814c">Sample_L</a> (const <a class="el" href="classPoint.html">Point</a> &p, <a class="el" href="classVector.html">Vector</a> *wi, <a class="el" href="structVisibilityTester.html">VisibilityTester</a> *vis) const =0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classSpectrum.html">Spectrum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#a63b1464dccee2e1f4891b88e2cf69ae2">Power</a> (const <a class="el" href="classScene.html">Scene</a> *) const =0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#a14dee2044c7b26c6ae57d75eaf4d385a">IsDeltaLight</a> () const =0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classSpectrum.html">Spectrum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#a677f9b00e0c8702fc57e87dc24a6a10e">Le</a> (const <a class="el" href="classRayDifferential.html">RayDifferential</a> &r) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classSpectrum.html">Spectrum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#a6b6ee1e0f18c6b98bea9c7304ac6813c">Sample_L</a> (const <a class="el" href="classPoint.html">Point</a> &p, float u1, float u2, <a class="el" href="classVector.html">Vector</a> *wi, float *pdf, <a class="el" href="structVisibilityTester.html">VisibilityTester</a> *vis) const =0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual float </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#ab98b08aeeaed6c7a7f6db75f9eb0f337">Pdf</a> (const <a class="el" href="classPoint.html">Point</a> &p, const <a class="el" href="classVector.html">Vector</a> &wi) const =0</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classSpectrum.html">Spectrum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#aa7e6d93c04c3d40c2b8a105fbca82234">Sample_L</a> (const <a class="el" href="classPoint.html">Point</a> &p, const <a class="el" href="classNormal.html">Normal</a> &n, float u1, float u2, <a class="el" href="classVector.html">Vector</a> *wi, float *pdf, <a class="el" href="structVisibilityTester.html">VisibilityTester</a> *visibility) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual float </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#aab7fb4b8023f279f569b281a48654d82">Pdf</a> (const <a class="el" href="classPoint.html">Point</a> &p, const <a class="el" href="classNormal.html">Normal</a> &n, const <a class="el" href="classVector.html">Vector</a> &wi) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="classSpectrum.html">Spectrum</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#aff997d524a767586d1fba5d92911172c">Sample_L</a> (const <a class="el" href="classScene.html">Scene</a> *scene, float u1, float u2, float u3, float u4, <a class="el" href="classRay.html">Ray</a> *ray, float *pdf) const =0</td></tr>
<tr><td colspan="2"><h2>Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const int </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#afae2e64a4a14046913c82c175078d8bb">nSamples</a></td></tr>
<tr><td colspan="2"><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classTransform.html">Transform</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#ae405f6543d4d8ee5573183b4ca2c587e">LightToWorld</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const <a class="el" href="classTransform.html">Transform</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classLight.html#a1b7aa72842da321f891fd8661ed19955">WorldToLight</a></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Definition at line <a class="el" href="light_8h_source.html#l00034">34</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="ad0e59fad13bb6cfadc25b2c477e9ddc7"></a><!-- doxytag: member="Light::~Light" ref="ad0e59fad13bb6cfadc25b2c477e9ddc7" args="()" -->
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<td class="memname">Light::~Light </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [virtual]</code></td>
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</table>
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<div class="memdoc">
<p>Definition at line <a class="el" href="light_8cpp_source.html#l00028">28</a> of file <a class="el" href="light_8cpp_source.html">light.cpp</a>.</p>
</div>
</div>
<a class="anchor" id="abaa3974f3a0906819bdaf849ef76e6a7"></a><!-- doxytag: member="Light::Light" ref="abaa3974f3a0906819bdaf849ef76e6a7" args="(const Transform &l2w, int ns=1)" -->
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<td class="memname">Light::Light </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classTransform.html">Transform</a> & </td>
<td class="paramname"> <em>l2w</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>ns</em> = <code>1</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td><code> [inline]</code></td>
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<div class="memdoc">
<p>Definition at line <a class="el" href="light_8h_source.html#l00038">38</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
<p>References <a class="el" href="util_8cpp_source.html#l00080">Warning()</a>.</p>
</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a14dee2044c7b26c6ae57d75eaf4d385a"></a><!-- doxytag: member="Light::IsDeltaLight" ref="a14dee2044c7b26c6ae57d75eaf4d385a" args="() const =0" -->
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<td class="memname">virtual bool Light::IsDeltaLight </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [pure virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Implemented in <a class="el" href="classAreaLight.html#abe1881f85881d7369a6c00eb70334f9d">AreaLight</a>, <a class="el" href="classDistantLight.html#abd88d41c6a29a56bf350b0e1f21a24c4">DistantLight</a>, <a class="el" href="classGonioPhotometricLight.html#a64d6c347212bead665739bf5ec9da002">GonioPhotometricLight</a>, <a class="el" href="classInfiniteAreaLight.html#a391c76eacec93e04b8bc30f89f9dba22">InfiniteAreaLight</a>, <a class="el" href="classInfiniteAreaLightIS.html#ab28075c3de49d0dfc7dc6784720390c7">InfiniteAreaLightIS</a>, <a class="el" href="classPointLight.html#a5ebb8f7a16397cc9653aadc259c42c11">PointLight</a>, <a class="el" href="classProjectionLight.html#a632efd384cd85dc9cee7fe3864d2e3b4">ProjectionLight</a>, and <a class="el" href="classSpotLight.html#ade4e9a12c71435d78bc6c7a5cb4db374">SpotLight</a>.</p>
<p>Referenced by <a class="el" href="transport_8cpp_source.html#l00123">EstimateDirect()</a>.</p>
</div>
</div>
<a class="anchor" id="a677f9b00e0c8702fc57e87dc24a6a10e"></a><!-- doxytag: member="Light::Le" ref="a677f9b00e0c8702fc57e87dc24a6a10e" args="(const RayDifferential &r) const " -->
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<td class="memname"><a class="el" href="classSpectrum.html">Spectrum</a> Light::Le </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classRayDifferential.html">RayDifferential</a> & </td>
<td class="paramname"> <em>r</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<div class="memdoc">
<p>Reimplemented in <a class="el" href="classInfiniteAreaLight.html#a373a834f1c4625136f0dbd611098258d">InfiniteAreaLight</a>, and <a class="el" href="classInfiniteAreaLightIS.html#a08fc8eda45811461069073b707fe9677">InfiniteAreaLightIS</a>.</p>
<p>Definition at line <a class="el" href="light_8cpp_source.html#l00041">41</a> of file <a class="el" href="light_8cpp_source.html">light.cpp</a>.</p>
<p>Referenced by <a class="el" href="transport_8cpp_source.html#l00123">EstimateDirect()</a>.</p>
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<a class="anchor" id="aab7fb4b8023f279f569b281a48654d82"></a><!-- doxytag: member="Light::Pdf" ref="aab7fb4b8023f279f569b281a48654d82" args="(const Point &p, const Normal &n, const Vector &wi) const " -->
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<td class="memname">virtual float Light::Pdf </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classPoint.html">Point</a> & </td>
<td class="paramname"> <em>p</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classNormal.html">Normal</a> & </td>
<td class="paramname"> <em>n</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classVector.html">Vector</a> & </td>
<td class="paramname"> <em>wi</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td> const<code> [inline, virtual]</code></td>
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<p>Reimplemented in <a class="el" href="classAreaLight.html#a27b47741b10c00aa2d88c187646eb457">AreaLight</a>, and <a class="el" href="classInfiniteAreaLight.html#a546a37b45d393521df4d65a78223cec6">InfiniteAreaLight</a>.</p>
<p>Definition at line <a class="el" href="light_8h_source.html#l00063">63</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
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<a class="anchor" id="ab98b08aeeaed6c7a7f6db75f9eb0f337"></a><!-- doxytag: member="Light::Pdf" ref="ab98b08aeeaed6c7a7f6db75f9eb0f337" args="(const Point &p, const Vector &wi) const =0" -->
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<td class="memname">virtual float Light::Pdf </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classPoint.html">Point</a> & </td>
<td class="paramname"> <em>p</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classVector.html">Vector</a> & </td>
<td class="paramname"> <em>wi</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="classAreaLight.html#a6b2064ed03ce53c5920a94ad0172e512">AreaLight</a>, <a class="el" href="classDistantLight.html#ad419fceba74a4e073b3eafad59d2d534">DistantLight</a>, <a class="el" href="classGonioPhotometricLight.html#a741c0e33d8325053f8c7db449de4989f">GonioPhotometricLight</a>, <a class="el" href="classInfiniteAreaLight.html#adf16329f297007e76d3fffb63d8ae8e1">InfiniteAreaLight</a>, <a class="el" href="classInfiniteAreaLightIS.html#ab8d3ae8a1753e5d8560e250c62594bcb">InfiniteAreaLightIS</a>, <a class="el" href="classPointLight.html#a2989dfa73641ed99e0c9f9cdd34856f6">PointLight</a>, <a class="el" href="classProjectionLight.html#a0325d69f0cb5cc02d55d9625a01f6cfc">ProjectionLight</a>, and <a class="el" href="classSpotLight.html#a7fc51b8c5df70656b20ad9addee16f78">SpotLight</a>.</p>
<p>Referenced by <a class="el" href="transport_8cpp_source.html#l00123">EstimateDirect()</a>.</p>
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<a class="anchor" id="a63b1464dccee2e1f4891b88e2cf69ae2"></a><!-- doxytag: member="Light::Power" ref="a63b1464dccee2e1f4891b88e2cf69ae2" args="(const Scene *) const =0" -->
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<td class="memname">virtual <a class="el" href="classSpectrum.html">Spectrum</a> Light::Power </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classScene.html">Scene</a> * </td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="classAreaLight.html#a5d621901c36c3944c6b2cd5df57bb0b1">AreaLight</a>, <a class="el" href="classDistantLight.html#a9ebe2e5b5e2a0277856af8c824c71b76">DistantLight</a>, <a class="el" href="classGonioPhotometricLight.html#a56ec27ae87224992c45bc4b88467c83c">GonioPhotometricLight</a>, <a class="el" href="classInfiniteAreaLight.html#adf83de6419e76f2349733d164852faf4">InfiniteAreaLight</a>, <a class="el" href="classInfiniteAreaLightIS.html#a29845a37f155bb656944dbcc9aaad8b0">InfiniteAreaLightIS</a>, <a class="el" href="classPointLight.html#a6f7b992d7bfbd6aa39a6cebbc65d0c5b">PointLight</a>, <a class="el" href="classProjectionLight.html#adac5511565390d4a2c606f5d325c85fb">ProjectionLight</a>, and <a class="el" href="classSpotLight.html#a5929d253116c04723d13275a2356b51e">SpotLight</a>.</p>
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<a class="anchor" id="aff997d524a767586d1fba5d92911172c"></a><!-- doxytag: member="Light::Sample_L" ref="aff997d524a767586d1fba5d92911172c" args="(const Scene *scene, float u1, float u2, float u3, float u4, Ray *ray, float *pdf) const =0" -->
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<td class="memname">virtual <a class="el" href="classSpectrum.html">Spectrum</a> Light::Sample_L </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classScene.html">Scene</a> * </td>
<td class="paramname"> <em>scene</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u1</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u2</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u3</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u4</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classRay.html">Ray</a> * </td>
<td class="paramname"> <em>ray</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>pdf</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="classAreaLight.html#a7bb80d972c95e47be110fd95ec71fe70">AreaLight</a>, <a class="el" href="classDistantLight.html#adced0735f3f4a5fc49a4ce95ca3e4f9a">DistantLight</a>, <a class="el" href="classGonioPhotometricLight.html#a6374d901b26123f9bde334f35cb71304">GonioPhotometricLight</a>, <a class="el" href="classInfiniteAreaLight.html#af6c856b70a051021d5565eb20b0bd3c4">InfiniteAreaLight</a>, <a class="el" href="classInfiniteAreaLightIS.html#a0b3785aaa845a9853b9b28b7cd708ced">InfiniteAreaLightIS</a>, <a class="el" href="classPointLight.html#a46339569851c0c630f66a60a7ae6815a">PointLight</a>, <a class="el" href="classProjectionLight.html#a2fd39033a1a6378514ebe3c2eee3847e">ProjectionLight</a>, and <a class="el" href="classSpotLight.html#a5bf82e7c8a5c1cbee9484ed2d58e67db">SpotLight</a>.</p>
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<a class="anchor" id="aa7e6d93c04c3d40c2b8a105fbca82234"></a><!-- doxytag: member="Light::Sample_L" ref="aa7e6d93c04c3d40c2b8a105fbca82234" args="(const Point &p, const Normal &n, float u1, float u2, Vector *wi, float *pdf, VisibilityTester *visibility) const " -->
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<td class="memname">virtual <a class="el" href="classSpectrum.html">Spectrum</a> Light::Sample_L </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classPoint.html">Point</a> & </td>
<td class="paramname"> <em>p</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="classNormal.html">Normal</a> & </td>
<td class="paramname"> <em>n</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u1</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u2</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classVector.html">Vector</a> * </td>
<td class="paramname"> <em>wi</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>pdf</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structVisibilityTester.html">VisibilityTester</a> * </td>
<td class="paramname"> <em>visibility</em></td><td> </td>
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<td></td>
<td>)</td>
<td></td><td></td><td> const<code> [inline, virtual]</code></td>
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<p>Reimplemented in <a class="el" href="classAreaLight.html#a040cd473570ee94dc6f1aad4f368d2e4">AreaLight</a>, and <a class="el" href="classInfiniteAreaLight.html#a749915524e33a9296fde195c5e98c962">InfiniteAreaLight</a>.</p>
<p>Definition at line <a class="el" href="light_8h_source.html#l00058">58</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
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<a class="anchor" id="a6b6ee1e0f18c6b98bea9c7304ac6813c"></a><!-- doxytag: member="Light::Sample_L" ref="a6b6ee1e0f18c6b98bea9c7304ac6813c" args="(const Point &p, float u1, float u2, Vector *wi, float *pdf, VisibilityTester *vis) const =0" -->
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<td class="memname">virtual <a class="el" href="classSpectrum.html">Spectrum</a> Light::Sample_L </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classPoint.html">Point</a> & </td>
<td class="paramname"> <em>p</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u1</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"> <em>u2</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classVector.html">Vector</a> * </td>
<td class="paramname"> <em>wi</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>pdf</em>, </td>
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<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structVisibilityTester.html">VisibilityTester</a> * </td>
<td class="paramname"> <em>vis</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td> const<code> [pure virtual]</code></td>
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<p>Implemented in <a class="el" href="classAreaLight.html#a2b2ec43ac0a8cf5ef76f05c5be59191c">AreaLight</a>, <a class="el" href="classDistantLight.html#a62072724ebfe89d8e9b871f69ebbfcb0">DistantLight</a>, <a class="el" href="classGonioPhotometricLight.html#a99d374516449d7398a43f8434a1915fe">GonioPhotometricLight</a>, <a class="el" href="classInfiniteAreaLight.html#a75364df506b92eb6320ea83b5ae35292">InfiniteAreaLight</a>, <a class="el" href="classInfiniteAreaLightIS.html#a960a1e41d9178d6fa38043c836bfdd69">InfiniteAreaLightIS</a>, <a class="el" href="classPointLight.html#a2309b386045b96600e10eb9727ab3f11">PointLight</a>, <a class="el" href="classProjectionLight.html#aa0406a42b449995f6318a9252821cf88">ProjectionLight</a>, and <a class="el" href="classSpotLight.html#a66606d9e1d1fd9fd7758be3fe64f17a9">SpotLight</a>.</p>
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<a class="anchor" id="acc1f14dae6074cc9c16b7387020e814c"></a><!-- doxytag: member="Light::Sample_L" ref="acc1f14dae6074cc9c16b7387020e814c" args="(const Point &p, Vector *wi, VisibilityTester *vis) const =0" -->
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<td class="memname">virtual <a class="el" href="classSpectrum.html">Spectrum</a> Light::Sample_L </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classPoint.html">Point</a> & </td>
<td class="paramname"> <em>p</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="classVector.html">Vector</a> * </td>
<td class="paramname"> <em>wi</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structVisibilityTester.html">VisibilityTester</a> * </td>
<td class="paramname"> <em>vis</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td> const<code> [pure virtual]</code></td>
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<div class="memdoc">
<p>Implemented in <a class="el" href="classAreaLight.html#afdfef73eee9b2191db1469214eacef94">AreaLight</a>, <a class="el" href="classDistantLight.html#a2592fdfeb6fb4c1fdabec6d089f3f2d5">DistantLight</a>, <a class="el" href="classGonioPhotometricLight.html#a8d053f5e1b78c0fb140e47dd3a0eb895">GonioPhotometricLight</a>, <a class="el" href="classInfiniteAreaLight.html#a694407ac801d1c9ac05e9735541162b3">InfiniteAreaLight</a>, <a class="el" href="classInfiniteAreaLightIS.html#a31f79d960ce64db12359966db9a83f93">InfiniteAreaLightIS</a>, <a class="el" href="classPointLight.html#ac7d93cbf98650e81782efaeec9e06386">PointLight</a>, <a class="el" href="classProjectionLight.html#a0f3f4b3e47464c007852b4c99b114e23">ProjectionLight</a>, and <a class="el" href="classSpotLight.html#ab3f3e616dcb137ff462ded330026e02c">SpotLight</a>.</p>
<p>Referenced by <a class="el" href="transport_8cpp_source.html#l00123">EstimateDirect()</a>, <a class="el" href="single_8cpp_source.html#l00057">SingleScattering::Li()</a>, <a class="el" href="photonmap_8cpp_source.html#l00147">PhotonIntegrator::Preprocess()</a>, <a class="el" href="igi_8cpp_source.html#l00093">IGIIntegrator::Preprocess()</a>, and <a class="el" href="exphotonmap_8cpp_source.html#l00298">ExPhotonIntegrator::Preprocess()</a>.</p>
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<hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="ae405f6543d4d8ee5573183b4ca2c587e"></a><!-- doxytag: member="Light::LightToWorld" ref="ae405f6543d4d8ee5573183b4ca2c587e" args="" -->
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<td class="memname">const <a class="el" href="classTransform.html">Transform</a> <a class="el" href="classLight.html#ae405f6543d4d8ee5573183b4ca2c587e">Light::LightToWorld</a><code> [protected]</code></td>
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<p>Definition at line <a class="el" href="light_8h_source.html#l00074">74</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
<p>Referenced by <a class="el" href="distant_8cpp_source.html#l00054">DistantLight::DistantLight()</a>, <a class="el" href="goniometric_8cpp_source.html#l00070">GonioPhotometricLight::GonioPhotometricLight()</a>, <a class="el" href="point_8cpp_source.html#l00049">PointLight::PointLight()</a>, <a class="el" href="projection_8cpp_source.html#l00060">ProjectionLight::ProjectionLight()</a>, <a class="el" href="spot_8cpp_source.html#l00087">SpotLight::Sample_L()</a>, <a class="el" href="projection_8cpp_source.html#l00122">ProjectionLight::Sample_L()</a>, <a class="el" href="infinitesample_8cpp_source.html#l00152">InfiniteAreaLightIS::Sample_L()</a>, and <a class="el" href="spot_8cpp_source.html#l00052">SpotLight::SpotLight()</a>.</p>
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<a class="anchor" id="afae2e64a4a14046913c82c175078d8bb"></a><!-- doxytag: member="Light::nSamples" ref="afae2e64a4a14046913c82c175078d8bb" args="" -->
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<td class="memname">const int <a class="el" href="classLight.html#afae2e64a4a14046913c82c175078d8bb">Light::nSamples</a></td>
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<p>Definition at line <a class="el" href="light_8h_source.html#l00071">71</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
<p>Referenced by <a class="el" href="photonmap_8cpp_source.html#l00125">PhotonIntegrator::RequestSamples()</a>, <a class="el" href="irradiancecache_8cpp_source.html#l00100">IrradianceCache::RequestSamples()</a>, <a class="el" href="igi_8cpp_source.html#l00075">IGIIntegrator::RequestSamples()</a>, <a class="el" href="exphotonmap_8cpp_source.html#l00271">ExPhotonIntegrator::RequestSamples()</a>, and <a class="el" href="directlighting_8cpp_source.html#l00039">DirectLighting::RequestSamples()</a>.</p>
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<a class="anchor" id="a1b7aa72842da321f891fd8661ed19955"></a><!-- doxytag: member="Light::WorldToLight" ref="a1b7aa72842da321f891fd8661ed19955" args="" -->
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<td class="memname">const <a class="el" href="classTransform.html">Transform</a> <a class="el" href="classLight.html#a1b7aa72842da321f891fd8661ed19955">Light::WorldToLight</a><code> [protected]</code></td>
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<p>Definition at line <a class="el" href="light_8h_source.html#l00074">74</a> of file <a class="el" href="light_8h_source.html">light.h</a>.</p>
<p>Referenced by <a class="el" href="spot_8cpp_source.html#l00067">SpotLight::Falloff()</a>, <a class="el" href="infinitesample_8cpp_source.html#l00140">InfiniteAreaLightIS::Le()</a>, <a class="el" href="infinite_8cpp_source.html#l00084">InfiniteAreaLight::Le()</a>, <a class="el" href="infinitesample_8cpp_source.html#l00179">InfiniteAreaLightIS::Pdf()</a>, <a class="el" href="projection_8cpp_source.html#l00101">ProjectionLight::Projection()</a>, and <a class="el" href="goniometric_8cpp_source.html#l00039">GonioPhotometricLight::Scale()</a>.</p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="light_8h_source.html">light.h</a></li>
<li><a class="el" href="light_8cpp_source.html">light.cpp</a></li>
</ul>
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