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<h1>PointLight Class Reference</h1><!-- doxytag: class="PointLight" --><!-- doxytag: inherits="Light" --><div class="dynheader">
Inheritance diagram for PointLight:</div>
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<p><a href="classPointLight-members.html">List of all members.</a></p>
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<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#adfa62028577b375f6329e627b3b12a5b">PointLight</a> (const <a class="el" href="classTransform.html">Transform</a> &amp;light2world, const <a class="el" href="classSpectrum.html">Spectrum</a> &amp;intensity)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classSpectrum.html">Spectrum</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#ac7d93cbf98650e81782efaeec9e06386">Sample_L</a> (const <a class="el" href="classPoint.html">Point</a> &amp;p, <a class="el" href="classVector.html">Vector</a> *wi, <a class="el" href="structVisibilityTester.html">VisibilityTester</a> *vis) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classSpectrum.html">Spectrum</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a6f7b992d7bfbd6aa39a6cebbc65d0c5b">Power</a> (const <a class="el" href="classScene.html">Scene</a> *) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a5ebb8f7a16397cc9653aadc259c42c11">IsDeltaLight</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classSpectrum.html">Spectrum</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a2309b386045b96600e10eb9727ab3f11">Sample_L</a> (const <a class="el" href="classPoint.html">Point</a> &amp;P, float u1, float u2, <a class="el" href="classVector.html">Vector</a> *wo, float *pdf, <a class="el" href="structVisibilityTester.html">VisibilityTester</a> *visibility) const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classSpectrum.html">Spectrum</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a46339569851c0c630f66a60a7ae6815a">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 </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">float&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a2989dfa73641ed99e0c9f9cdd34856f6">Pdf</a> (const <a class="el" href="classPoint.html">Point</a> &amp;, const <a class="el" href="classVector.html">Vector</a> &amp;) const </td></tr>
<tr><td colspan="2"><h2>Private Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classPoint.html">Point</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a3853e9643620b76585292fe121fb3bf9">lightPos</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="classSpectrum.html">Spectrum</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classPointLight.html#a1e76470c0beecb8d5541cf053fab8277">Intensity</a></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00029">29</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>
<hr/><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="adfa62028577b375f6329e627b3b12a5b"></a><!-- doxytag: member="PointLight::PointLight" ref="adfa62028577b375f6329e627b3b12a5b" args="(const Transform &amp;light2world, const Spectrum &amp;intensity)" -->
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          <td class="memname">PointLight::PointLight </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classTransform.html">Transform</a> &amp;&nbsp;</td>
          <td class="paramname"> <em>light2world</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="classSpectrum.html">Spectrum</a> &amp;&nbsp;</td>
          <td class="paramname"> <em>intensity</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
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<p>Definition at line <a class="el" href="point_8cpp_source.html#l00049">49</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>References <a class="el" href="point_8cpp_source.html#l00046">Intensity</a>, <a class="el" href="point_8cpp_source.html#l00045">lightPos</a>, and <a class="el" href="light_8h_source.html#l00074">Light::LightToWorld</a>.</p>

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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a5ebb8f7a16397cc9653aadc259c42c11"></a><!-- doxytag: member="PointLight::IsDeltaLight" ref="a5ebb8f7a16397cc9653aadc259c42c11" args="() const " -->
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          <td class="memname">bool PointLight::IsDeltaLight </td>
          <td>(</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline, virtual]</code></td>
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<p>Implements <a class="el" href="classLight.html#a14dee2044c7b26c6ae57d75eaf4d385a">Light</a>.</p>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00037">37</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

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<a class="anchor" id="a2989dfa73641ed99e0c9f9cdd34856f6"></a><!-- doxytag: member="PointLight::Pdf" ref="a2989dfa73641ed99e0c9f9cdd34856f6" args="(const Point &amp;, const Vector &amp;) const " -->
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          <td class="memname">float PointLight::Pdf </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classPoint.html">Point</a> &amp;&nbsp;</td>
          <td class="paramname">, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const <a class="el" href="classVector.html">Vector</a> &amp;&nbsp;</td>
          <td class="paramname"></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td> const<code> [virtual]</code></td>
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<div class="memdoc">

<p>Implements <a class="el" href="classLight.html#ab98b08aeeaed6c7a7f6db75f9eb0f337">Light</a>.</p>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00067">67</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

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<a class="anchor" id="a6f7b992d7bfbd6aa39a6cebbc65d0c5b"></a><!-- doxytag: member="PointLight::Power" ref="a6f7b992d7bfbd6aa39a6cebbc65d0c5b" args="(const Scene *) const " -->
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          <td class="memname"><a class="el" href="classSpectrum.html">Spectrum</a> PointLight::Power </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classScene.html">Scene</a> *&nbsp;</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline, virtual]</code></td>
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<p>Implements <a class="el" href="classLight.html#a63b1464dccee2e1f4891b88e2cf69ae2">Light</a>.</p>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00034">34</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>References <a class="el" href="point_8cpp_source.html#l00046">Intensity</a>, and <a class="el" href="pbrt_8h_source.html#l00204">M_PI</a>.</p>

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<a class="anchor" id="a46339569851c0c630f66a60a7ae6815a"></a><!-- doxytag: member="PointLight::Sample_L" ref="a46339569851c0c630f66a60a7ae6815a" args="(const Scene *scene, float u1, float u2, float u3, float u4, Ray *ray, float *pdf) const " -->
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          <td class="memname"><a class="el" href="classSpectrum.html">Spectrum</a> PointLight::Sample_L </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classScene.html">Scene</a> *&nbsp;</td>
          <td class="paramname"> <em>scene</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float&nbsp;</td>
          <td class="paramname"> <em>u1</em>, </td>
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          <td class="paramtype">float&nbsp;</td>
          <td class="paramname"> <em>u2</em>, </td>
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          <td class="paramtype">float&nbsp;</td>
          <td class="paramname"> <em>u3</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>ray</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float *&nbsp;</td>
          <td class="paramname"> <em>pdf</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td> const<code> [virtual]</code></td>
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<p>Implements <a class="el" href="classLight.html#aff997d524a767586d1fba5d92911172c">Light</a>.</p>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00070">70</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>References <a class="el" href="geometry_8h_source.html#l00214">Ray::d</a>, <a class="el" href="point_8cpp_source.html#l00046">Intensity</a>, <a class="el" href="point_8cpp_source.html#l00045">lightPos</a>, <a class="el" href="geometry_8h_source.html#l00213">Ray::o</a>, <a class="el" href="mc_8cpp_source.html#l00074">UniformSampleSphere()</a>, and <a class="el" href="mc_8cpp_source.html#l00082">UniformSpherePdf()</a>.</p>

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<a class="anchor" id="a2309b386045b96600e10eb9727ab3f11"></a><!-- doxytag: member="PointLight::Sample_L" ref="a2309b386045b96600e10eb9727ab3f11" args="(const Point &amp;P, float u1, float u2, Vector *wo, float *pdf, VisibilityTester *visibility) const " -->
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          <td class="memname"><a class="el" href="classSpectrum.html">Spectrum</a> PointLight::Sample_L </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classPoint.html">Point</a> &amp;&nbsp;</td>
          <td class="paramname"> <em>P</em>, </td>
        </tr>
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          <td class="paramkey"></td>
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          <td class="paramtype">float&nbsp;</td>
          <td class="paramname"> <em>u1</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">float&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>wo</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">float *&nbsp;</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> *&nbsp;</td>
          <td class="paramname"> <em>visibility</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td> const<code> [virtual]</code></td>
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<p>Implements <a class="el" href="classLight.html#a6b6ee1e0f18c6b98bea9c7304ac6813c">Light</a>.</p>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00061">61</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>References <a class="el" href="point_8cpp_source.html#l00055">Sample_L()</a>.</p>

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<a class="anchor" id="ac7d93cbf98650e81782efaeec9e06386"></a><!-- doxytag: member="PointLight::Sample_L" ref="ac7d93cbf98650e81782efaeec9e06386" args="(const Point &amp;p, Vector *wi, VisibilityTester *vis) const " -->
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          <td class="memname"><a class="el" href="classSpectrum.html">Spectrum</a> PointLight::Sample_L </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="classPoint.html">Point</a> &amp;&nbsp;</td>
          <td class="paramname"> <em>p</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="classVector.html">Vector</a> *&nbsp;</td>
          <td class="paramname"> <em>wi</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="structVisibilityTester.html">VisibilityTester</a> *&nbsp;</td>
          <td class="paramname"> <em>vis</em></td><td>&nbsp;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td> const<code> [virtual]</code></td>
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<p>Implements <a class="el" href="classLight.html#acc1f14dae6074cc9c16b7387020e814c">Light</a>.</p>

<p>Definition at line <a class="el" href="point_8cpp_source.html#l00055">55</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>References <a class="el" href="geometry_8h_source.html#l00338">DistanceSquared()</a>, <a class="el" href="point_8cpp_source.html#l00046">Intensity</a>, <a class="el" href="point_8cpp_source.html#l00045">lightPos</a>, <a class="el" href="geometry_8h_source.html#l00321">Normalize()</a>, and <a class="el" href="light_8h_source.html#l00078">VisibilityTester::SetSegment()</a>.</p>

<p>Referenced by <a class="el" href="point_8cpp_source.html#l00061">Sample_L()</a>.</p>

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<hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="a1e76470c0beecb8d5541cf053fab8277"></a><!-- doxytag: member="PointLight::Intensity" ref="a1e76470c0beecb8d5541cf053fab8277" args="" -->
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          <td class="memname"><a class="el" href="classSpectrum.html">Spectrum</a> <a class="el" href="classPointLight.html#a1e76470c0beecb8d5541cf053fab8277">PointLight::Intensity</a><code> [private]</code></td>
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<p>Definition at line <a class="el" href="point_8cpp_source.html#l00046">46</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>Referenced by <a class="el" href="point_8cpp_source.html#l00049">PointLight()</a>, <a class="el" href="point_8cpp_source.html#l00034">Power()</a>, and <a class="el" href="point_8cpp_source.html#l00055">Sample_L()</a>.</p>

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<a class="anchor" id="a3853e9643620b76585292fe121fb3bf9"></a><!-- doxytag: member="PointLight::lightPos" ref="a3853e9643620b76585292fe121fb3bf9" args="" -->
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          <td class="memname"><a class="el" href="classPoint.html">Point</a> <a class="el" href="classPointLight.html#a3853e9643620b76585292fe121fb3bf9">PointLight::lightPos</a><code> [private]</code></td>
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<p>Definition at line <a class="el" href="point_8cpp_source.html#l00045">45</a> of file <a class="el" href="point_8cpp_source.html">point.cpp</a>.</p>

<p>Referenced by <a class="el" href="point_8cpp_source.html#l00049">PointLight()</a>, and <a class="el" href="point_8cpp_source.html#l00055">Sample_L()</a>.</p>

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<hr/>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="point_8cpp_source.html">point.cpp</a></li>
</ul>
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