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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>NeL: NL3D::CLightInfluenceInterpolator class Reference</title>
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<h1>NL3D::CLightInfluenceInterpolator Class Reference</h1><code>#include <<a class="el" href="a05896.html">light_influence_interpolator.h</a>></code>
<p>
<hr><a name="_details"></a><h2>Detailed Description</h2>
This class is used by <a class="el" href="a02702.html">CLandscape</a> and IG/Pacs to compute interpolated influence of lights (biLinear-like) on a square. It works only with <a class="el" href="a03094.html">CPointLightNamed</a>. <dl compact><dt><b>Author:</b></dt><dd>Lionel Berenguier <p>
Nevrax France </dd></dl>
<dl compact><dt><b>Date:</b></dt><dd>2001 </dd></dl>
<p>
<p>
Definition at line <a class="el" href="a05896.html#l00048">48</a> of file <a class="el" href="a05896.html">light_influence_interpolator.h</a>.<table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>enum </td><td class="memItemRight" valign=bottom>{ <a class="el" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatorw0NL3D_1_1CLightInfluenceInterpolatorw1">NumLightPerCorner</a> = 2
}</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">We support only 2 light per corner. <a href="#NL3D_1_1CLightInfluenceInterpolatorw0">More...</a><br><br></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatora0">CLightInfluenceInterpolator</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Constructor. No-op !! <a href="#NL3D_1_1CLightInfluenceInterpolatora0"></a><br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatora1">interpolate</a> (std::vector< <a class="el" href="a03092.html">CPointLightInfluence</a> > &pointLightList, float subX, float subY)</td></tr>
<tr><td colspan=2><br><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="a02746.html">CCorner</a> </td><td class="memItemRight" valign=bottom><a class="el" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a> [4]</td></tr>
</table>
<hr><h2>Member Enumeration Documentation</h2>
<a class="anchor" name="NL3D_1_1CLightInfluenceInterpolatorw0" doxytag="NL3D::CLightInfluenceInterpolator::@16" ></a><p>
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<td class="md" nowrap valign="top"> anonymous enum
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</td>
<td>
<p>
We support only 2 light per corner.
<p>
<dl compact><dt><b>Enumeration values: </b></dt><dd>
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<tr><td valign=top><em><a class="anchor" name="NL3D_1_1CLightInfluenceInterpolatorw0NL3D_1_1CLightInfluenceInterpolatorw1" doxytag="NumLightPerCorner" ></a>NumLightPerCorner</em> </td><td>
</td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="a05896.html#l00053">53</a> of file <a class="el" href="a05896.html">light_influence_interpolator.h</a>.
<p>
<div class="fragment"><pre>00053 {<a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatorw0NL3D_1_1CLightInfluenceInterpolatorw1">NumLightPerCorner</a>= 2};
</pre></div> </td>
</tr>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="NL3D_1_1CLightInfluenceInterpolatora0" doxytag="NL3D::CLightInfluenceInterpolator::CLightInfluenceInterpolator" ></a><p>
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<td class="md" nowrap valign="top"> NL3D::CLightInfluenceInterpolator::CLightInfluenceInterpolator </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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</td>
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<p>
Constructor. No-op !!
<p>
<p>
Definition at line <a class="el" href="a05896.html#l00077">77</a> of file <a class="el" href="a05896.html">light_influence_interpolator.h</a>.
<p>
<div class="fragment"><pre>00077 {}
</pre></div> </td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="NL3D_1_1CLightInfluenceInterpolatora1" doxytag="NL3D::CLightInfluenceInterpolator::interpolate" ></a><p>
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<td class="md" nowrap valign="top"> void NL3D::CLightInfluenceInterpolator::interpolate </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">std::vector< <a class="el" href="a03092.html">CPointLightInfluence</a> > & </td>
<td class="mdname" nowrap> <em>pointLightList</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>subX</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td></td>
<td class="md" nowrap>float </td>
<td class="mdname" nowrap> <em>subY</em></td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
</td>
<td>
<p>
solve the biLinear (regrouping multiple influence of light at same id), and add <a class="el" href="a03092.html">CPointLightInfluence</a> to the list. <dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign=top><em>subX</em> </td><td>E [0, 1] is the x coord for biLinear </td></tr>
<tr><td valign=top><em>subY</em> </td><td>E [0, 1] is the y coord for biLinear</td></tr>
</table>
</dl>
<p>
Definition at line <a class="el" href="a05895.html#l00038">38</a> of file <a class="el" href="a05895.html">light_influence_interpolator.cpp</a>.
<p>
References <a class="el" href="a06185.html#l00099">NL3D::CPointLightNamed::_IdInInfluenceList</a>, <a class="el" href="a05896.html#l00071">Corners</a>, <a class="el" href="a05896.html#l00065">NL3D::CLightInfluenceInterpolator::CCorner::Influence</a>, <a class="el" href="a05896.html#l00060">NL3D::CLightInfluenceInterpolator::CCorner::Lights</a>, <a class="el" href="a05622.html#l00290">nlassert</a>, <a class="el" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatorw0NL3D_1_1CLightInfluenceInterpolatorw1">NumLightPerCorner</a>, <a class="el" href="a05981.html#l00104">sint</a>, and <a class="el" href="a05981.html#l00105">uint</a>.
<p>
Referenced by <a class="el" href="a06157.html#l01543">NL3D::CPatch::appendTileLightInfluences()</a>, and <a class="el" href="a06475.html#l00062">NL3D::CSurfaceLightGrid::getStaticLightSetup()</a>.
<p>
<div class="fragment"><pre>00039 {
00040 <a class="code" href="a04558.html#a15">uint</a> crn;
00041 <span class="comment">// UnRolled loops.</span>
00042 <a class="code" href="a04199.html#a6">nlassert</a>(NumLightPerCorner==2);
00043
00044 <span class="comment">// Reset index for each light.</span>
00045 <span class="keywordflow">for</span>(crn= 0; crn<4; crn++)
00046 {
00047 CCorner &corner= <a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a>[crn];
00048 <span class="comment">// UnRolled.</span>
00049 <span class="keywordflow">if</span>(corner.Lights[0])
00050 corner.<a class="code" href="a02746.html#NL3D_1_1CLightInfluenceInterpolator_1_1CCornero0">Lights</a>[0]->_IdInInfluenceList= -1;
00051 <span class="keywordflow">if</span>(corner.Lights[1])
00052 corner.Lights[1]->_IdInInfluenceList= -1;
00053 }
00054
00055 <span class="comment">// Compute biLinear influence on each corner</span>
00056 <a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a>[0].<a class="code" href="a02746.html#NL3D_1_1CLightInfluenceInterpolator_1_1CCornerr0">Influence</a>= (1-subX) * (1-subY);
00057 <a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a>[1].<a class="code" href="a02746.html#NL3D_1_1CLightInfluenceInterpolator_1_1CCornerr0">Influence</a>= subX * (1-subY);
00058 <a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a>[2].<a class="code" href="a02746.html#NL3D_1_1CLightInfluenceInterpolator_1_1CCornerr0">Influence</a>= (1-subX) * subY;
00059 <a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a>[3].<a class="code" href="a02746.html#NL3D_1_1CLightInfluenceInterpolator_1_1CCornerr0">Influence</a>= subX * subY;
00060
00061 <span class="comment">// For each light of each corner</span>
00062 <span class="keywordflow">for</span>(crn= 0; crn<4; crn++)
00063 {
00064 CCorner &corner= <a class="code" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">Corners</a>[crn];
00065 <span class="comment">// UnRolled.</span>
00066 <span class="comment">// light 0.</span>
00067 <span class="keywordflow">if</span>(corner.Lights[0])
00068 {
00069 <span class="keywordflow">if</span>(corner.Lights[0]->_IdInInfluenceList==-1)
00070 {
00071 <span class="comment">// append a PointLightInfluence</span>
00072 pointLightList.push_back(CPointLightInfluence());
00073 <a class="code" href="a04558.html#a14">sint</a> <span class="keywordtype">id</span>= pointLightList.size()-1;
00074 <span class="comment">// setup the PointLightInfluence</span>
00075 corner.Lights[0]->_IdInInfluenceList= <span class="keywordtype">id</span>;
00076 pointLightList[<span class="keywordtype">id</span>].PointLight= corner.Lights[0];
00077 pointLightList[<span class="keywordtype">id</span>].Influence= corner.Influence;
00078 }
00079 <span class="keywordflow">else</span>
00080 {
00081 <span class="comment">// get the PointLightInfluence</span>
00082 <a class="code" href="a04558.html#a14">sint</a> <span class="keywordtype">id</span>= corner.Lights[0]->_IdInInfluenceList;
00083 <span class="comment">// increment the influence of the PointLightInfluence</span>
00084 pointLightList[<span class="keywordtype">id</span>].Influence+= corner.Influence;
00085 }
00086 }
00087 <span class="comment">// light 1.</span>
00088 <span class="keywordflow">if</span>(corner.Lights[1])
00089 {
00090 <span class="keywordflow">if</span>(corner.Lights[1]->_IdInInfluenceList==-1)
00091 {
00092 <span class="comment">// append a PointLightInfluence</span>
00093 pointLightList.push_back(CPointLightInfluence());
00094 <a class="code" href="a04558.html#a14">sint</a> <span class="keywordtype">id</span>= pointLightList.size()-1;
00095 <span class="comment">// setup the PointLightInfluence</span>
00096 corner.Lights[1]->_IdInInfluenceList= <span class="keywordtype">id</span>;
00097 pointLightList[<span class="keywordtype">id</span>].PointLight= corner.Lights[1];
00098 pointLightList[<span class="keywordtype">id</span>].Influence= corner.Influence;
00099 }
00100 <span class="keywordflow">else</span>
00101 {
00102 <span class="comment">// get the PointLightInfluence</span>
00103 <a class="code" href="a04558.html#a14">sint</a> <span class="keywordtype">id</span>= corner.Lights[1]->_IdInInfluenceList;
00104 <span class="comment">// increment the influence of the PointLightInfluence</span>
00105 pointLightList[<span class="keywordtype">id</span>].Influence+= corner.Influence;
00106 }
00107 }
00108 }
00109 }
</pre></div> </td>
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<hr><h2>Field Documentation</h2>
<a class="anchor" name="NL3D_1_1CLightInfluenceInterpolatoro0" doxytag="NL3D::CLightInfluenceInterpolator::Corners" ></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="a02746.html">CCorner</a> <a class="el" href="a02745.html#NL3D_1_1CLightInfluenceInterpolatoro0">NL3D::CLightInfluenceInterpolator::Corners</a>[4]
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<p>
The User must setup Lights correctly for each corner (ie set NULL for each light not here). Corner order is TL(0,0), TR(1,0), BL(0,1), BR(1,1).
<p>
Definition at line <a class="el" href="a05896.html#l00071">71</a> of file <a class="el" href="a05896.html">light_influence_interpolator.h</a>.
<p>
Referenced by <a class="el" href="a06157.html#l01543">NL3D::CPatch::appendTileLightInfluences()</a>, <a class="el" href="a06475.html#l00062">NL3D::CSurfaceLightGrid::getStaticLightSetup()</a>, and <a class="el" href="a05895.html#l00038">interpolate()</a>. </td>
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<hr>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="a05896.html">light_influence_interpolator.h</a><li><a class="el" href="a05895.html">light_influence_interpolator.cpp</a></ul>
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