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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
+<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
+<title>NeL: TemplateCTrackKeyFramerBezier&lt; CKeyT, T &gt; class Reference</title>
+<link href="doxygen.css" rel="stylesheet" type="text/css">
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+<!-- Generated by Doxygen 1.3.6 -->
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+<h1>CTrackKeyFramerBezier&lt; CKeyT, T &gt; Class Template Reference</h1><code>#include &lt;<a class="el" href="a06557.html">track_bezier.h</a>&gt;</code>
+<p>
+<hr><a name="_details"></a><h2>Detailed Description</h2>
+<h3>template&lt;class CKeyT, class T&gt;<br>
+ class CTrackKeyFramerBezier&lt; CKeyT, T &gt;</h3>
+
+ITrack implementation for Bezier keyframer.<p>
+<dl compact><dt><b>Author:</b></dt><dd>Lionel Berneguier <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="a06557.html#l00049">49</a> of file <a class="el" href="a06557.html">track_bezier.h</a>.<table border=0 cellpadding=0 cellspacing=0>
+<tr><td></td></tr>
+<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>virtual const IAnimatedValue &amp;&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a03552.html#CTrackKeyFramerBeziera0">getValue</a> () const </td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">From ITrack. <a href="#CTrackKeyFramerBeziera0"></a><br><br></td></tr>
+<tr><td colspan=2><br><h2>Protected Types</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>typedef CKeyT::TValueType&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a03552.html#CTrackKeyFramerBezierx0">TKeyValueType</a></td></tr>
+
+<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
+<tr><td colspan="2"><div class="groupHeader">From ITrackKeyFramer</div></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a03552.html#CTrackKeyFramerBezierz998_0">compile</a> ()</td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">compile (precalc). <a href="#CTrackKeyFramerBezierz998_0"></a><br><br></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a03552.html#CTrackKeyFramerBezierz998_1">evalKey</a> (const CKeyT *previous, const CKeyT *next, TAnimationTime datePrevious, TAnimationTime dateNext, TAnimationTime date)</td></tr>
+
+<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">evalKey (runtime). <a href="#CTrackKeyFramerBezierz998_1"></a><br><br></td></tr>
+<tr><td colspan=2><br><h2>Private Attributes</h2></td></tr>
+<tr><td class="memItemLeft" nowrap align=right valign=top>CAnimatedValueBlendable&lt; T &gt;&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="a03552.html#CTrackKeyFramerBezierr0">_Value</a></td></tr>
+
+</table>
+<hr><h2>Member Typedef Documentation</h2>
+<a class="anchor" name="CTrackKeyFramerBezierx0" doxytag="CTrackKeyFramerBezier::TKeyValueType" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" colspan="4">
+template&lt;class CKeyT, class T&gt; </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap valign="top"> typedef CKeyT::TValueType <a class="el" href="a03552.html">CTrackKeyFramerBezier</a>&lt; CKeyT, T &gt;::<a class="el" href="a03552.html#CTrackKeyFramerBezierx0">TKeyValueType</a><code> [protected]</code>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06557.html#l00061">61</a> of file <a class="el" href="a06557.html">track_bezier.h</a>.
+<p>
+Referenced by <a class="el" href="a06557.html#l00068">CTrackKeyFramerBezier&lt; CKeyT, T &gt;::evalKey()</a>. </td>
+ </tr>
+</table>
+<hr><h2>Member Function Documentation</h2>
+<a class="anchor" name="CTrackKeyFramerBezierz998_0" doxytag="CTrackKeyFramerBezier::compile" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" colspan="4">
+template&lt;class CKeyT, class T&gt; </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap valign="top"> virtual void <a class="el" href="a03552.html">CTrackKeyFramerBezier</a>&lt; CKeyT, T &gt;::compile </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap><code> [inline, protected, virtual]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+compile (precalc).
+<p>
+
+<p>
+Definition at line <a class="el" href="a06557.html#l00108">108</a> of file <a class="el" href="a06557.html">track_bezier.h</a>.
+<p>
+<div class="fragment"><pre>00109 {
+00110 ITrackKeyFramer&lt;CKeyT&gt;::compile();
+00111
+00112 <span class="comment">// Nothing else to do!! Tangents are given from user.</span>
+00113 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="CTrackKeyFramerBezierz998_1" doxytag="CTrackKeyFramerBezier::evalKey" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" colspan="4">
+template&lt;class CKeyT, class T&gt; </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap valign="top"> virtual void <a class="el" href="a03552.html">CTrackKeyFramerBezier</a>&lt; CKeyT, T &gt;::evalKey </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="md" nowrap valign="top">const CKeyT *&nbsp;</td>
+ <td class="mdname" nowrap> <em>previous</em>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td></td>
+ <td class="md" nowrap>const CKeyT *&nbsp;</td>
+ <td class="mdname" nowrap> <em>next</em>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td></td>
+ <td class="md" nowrap>TAnimationTime&nbsp;</td>
+ <td class="mdname" nowrap> <em>datePrevious</em>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td></td>
+ <td class="md" nowrap>TAnimationTime&nbsp;</td>
+ <td class="mdname" nowrap> <em>dateNext</em>, </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap align="right"></td>
+ <td></td>
+ <td class="md" nowrap>TAnimationTime&nbsp;</td>
+ <td class="mdname" nowrap> <em>date</em></td>
+ </tr>
+ <tr>
+ <td></td>
+ <td class="md">)&nbsp;</td>
+ <td class="md" colspan="2"><code> [inline, protected, virtual]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+evalKey (runtime).
+<p>
+
+<p>
+Definition at line <a class="el" href="a06557.html#l00068">68</a> of file <a class="el" href="a06557.html">track_bezier.h</a>.
+<p>
+References <a class="el" href="a05587.html#l00115">NLMISC::clamp()</a>, <a class="el" href="a05646.html#l00977">s</a>, and <a class="el" href="a06557.html#l00061">CTrackKeyFramerBezier&lt; CKeyT, T &gt;::TKeyValueType</a>.
+<p>
+<div class="fragment"><pre>00071 {
+00072 <span class="keywordflow">if</span>(previous &amp;&amp; next &amp;&amp; !previous-&gt;Step)
+00073 {
+00074 <span class="comment">// lerp from previous to cur.</span>
+00075 date-= datePrevious;
+00076 date*= previous-&gt;OODeltaTime;
+00077 <a class="code" href="a05378.html#a374">NLMISC::clamp</a>(date, 0,1);
+00078
+00079 <span class="comment">// Bezier interpolation.</span>
+00080 <span class="keywordtype">float</span> <a class="code" href="a04223.html#a626">s</a>= date;
+00081 <span class="keywordtype">float</span> s2 = <a class="code" href="a04223.html#a626">s</a> * <a class="code" href="a04223.html#a626">s</a>;
+00082 <span class="keywordtype">float</span> s3 = s2 * <a class="code" href="a04223.html#a626">s</a>;
+00083 <span class="keywordtype">float</span> u = 1.0f - <a class="code" href="a04223.html#a626">s</a>;
+00084 <span class="keywordtype">float</span> u2 = u * u;
+00085 <span class="keywordtype">float</span> u3 = u2 * u;
+00086
+00087 <span class="comment">// compute Bezier control points from tangents.</span>
+00088 <a class="code" href="a03552.html#CTrackKeyFramerBezierx0">TKeyValueType</a> cp0, cp1;
+00089
+00090 <span class="comment">// NB: loop case: dateNext is always &gt; datePrevious....</span>
+00091 cp0 = previous-&gt;Value + previous-&gt;OutTan * (dateNext-datePrevious) / 3.0f;
+00092 cp1 = next-&gt;Value + next-&gt;InTan * (dateNext-datePrevious) / 3.0f;
+00093
+00094 <a class="code" href="a05363.html#a540">copyToValue</a>(<a class="code" href="a03552.html#CTrackKeyFramerBezierr0">_Value</a>.Value, previous-&gt;Value*u3 + cp0*3.0f*u2*s
+00095 + cp1*3.0f*u*s2 + next-&gt;Value*s3);
+00096 }
+00097 <span class="keywordflow">else</span>
+00098 {
+00099 <span class="keywordflow">if</span> (previous)
+00100 <a class="code" href="a05363.html#a540">copyToValue</a>(<a class="code" href="a03552.html#CTrackKeyFramerBezierr0">_Value</a>.Value, previous-&gt;Value);
+00101 <span class="keywordflow">else</span>
+00102 <span class="keywordflow">if</span> (next)
+00103 <a class="code" href="a05363.html#a540">copyToValue</a>(<a class="code" href="a03552.html#CTrackKeyFramerBezierr0">_Value</a>.Value, next-&gt;Value);
+00104 }
+00105 }
+</pre></div> </td>
+ </tr>
+</table>
+<a class="anchor" name="CTrackKeyFramerBeziera0" doxytag="CTrackKeyFramerBezier::getValue" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" colspan="4">
+template&lt;class CKeyT, class T&gt; </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap valign="top"> virtual const IAnimatedValue&amp; <a class="el" href="a03552.html">CTrackKeyFramerBezier</a>&lt; CKeyT, T &gt;::getValue </td>
+ <td class="md" valign="top">(&nbsp;</td>
+ <td class="mdname1" valign="top" nowrap> </td>
+ <td class="md" valign="top">&nbsp;)&nbsp;</td>
+ <td class="md" nowrap> const<code> [inline, virtual]</code></td>
+ </tr>
+
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+From ITrack.
+<p>
+
+<p>
+Definition at line <a class="el" href="a06557.html#l00054">54</a> of file <a class="el" href="a06557.html">track_bezier.h</a>.
+<p>
+<div class="fragment"><pre>00055 {
+00056 <span class="keywordflow">return</span> <a class="code" href="a03552.html#CTrackKeyFramerBezierr0">_Value</a>;
+00057 }
+</pre></div> </td>
+ </tr>
+</table>
+<hr><h2>Field Documentation</h2>
+<a class="anchor" name="CTrackKeyFramerBezierr0" doxytag="CTrackKeyFramerBezier::_Value" ></a><p>
+<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
+ <tr>
+ <td class="mdRow">
+ <table cellpadding="0" cellspacing="0" border="0">
+ <tr>
+ <td class="md" colspan="4">
+template&lt;class CKeyT, class T&gt; </td>
+ </tr>
+ <tr>
+ <td class="md" nowrap valign="top"> CAnimatedValueBlendable&lt;T&gt; <a class="el" href="a03552.html">CTrackKeyFramerBezier</a>&lt; CKeyT, T &gt;::<a class="el" href="a03552.html#CTrackKeyFramerBezierr0">_Value</a><code> [private]</code>
+ </table>
+ </td>
+ </tr>
+</table>
+<table cellspacing=5 cellpadding=0 border=0>
+ <tr>
+ <td>
+ &nbsp;
+ </td>
+ <td>
+
+<p>
+
+<p>
+Definition at line <a class="el" href="a06557.html#l00118">118</a> of file <a class="el" href="a06557.html">track_bezier.h</a>. </td>
+ </tr>
+</table>
+<hr>The documentation for this class was generated from the following file:<ul>
+<li><a class="el" href="a06557.html">track_bezier.h</a></ul>
+<hr size="1"><address style="align: right;"><small>Generated on Tue Mar 16 06:43:54 2004 for NeL by
+<a href="http://www.doxygen.org/index.html">
+<img src="doxygen.png" alt="doxygen" align="middle" border=0 >
+</a>1.3.6 </small></address>
+</body>
+</html>