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+<hr><h1>value_smoother.cpp</h1><a href="value__smoother_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
+00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font>
+00008 <font class="comment"> *</font>
+00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
+00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
+00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
+00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
+00013 <font class="comment"> * any later version.</font>
+00014 <font class="comment"></font>
+00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
+00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
+00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
+00018 <font class="comment"> * General Public License for more details.</font>
+00019 <font class="comment"></font>
+00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
+00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
+00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
+00023 <font class="comment"> * MA 02111-1307, USA.</font>
+00024 <font class="comment"> */</font>
+00025
+00026 <font class="preprocessor">#include "<a class="code" href="stdmisc_8h.html">stdmisc.h</a>"</font>
+00027
+00028 <font class="preprocessor">#include "<a class="code" href="value__smoother_8h.html">nel/misc/value_smoother.h</a>"</font>
+00029
+00030
+00031 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
+00032
+00033
+00034 <font class="keyword">namespace </font>NLMISC
+00035 {
+00036
+00037
+<a name="l00038"></a><a class="code" href="classNLMISC_1_1CValueSmoother.html#a0">00038</a> CValueSmoother::CValueSmoother(uint n)
+00039 {
+00040 <a class="code" href="debug_8h.html#a6">nlassert</a>(n!=0);
+00041 <a class="code" href="classNLMISC_1_1CValueSmoother.html#a1">init</a>(n);
+00042 }
+00043
+<a name="l00044"></a><a class="code" href="classNLMISC_1_1CValueSmoother.html#a2">00044</a> <font class="keywordtype">void</font> CValueSmoother::reset()
+00045 {
+00046 fill(<a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>.begin(), <a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>.end(), 0);
+00047
+00048 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o1">_CurFrame</a>= 0;
+00049 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o2">_NumFrame</a>= 0;
+00050 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o3">_FrameSum</a>= 0;
+00051 }
+00052
+<a name="l00053"></a><a class="code" href="classNLMISC_1_1CValueSmoother.html#a1">00053</a> <font class="keywordtype">void</font> CValueSmoother::init(uint n)
+00054 {
+00055 <a class="code" href="debug_8h.html#a6">nlassert</a>(n!=0);
+00056
+00057 <font class="comment">// reset all the array to 0.</font>
+00058 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>.clear();
+00059 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>.resize(n, 0);
+00060
+00061 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o1">_CurFrame</a>= 0;
+00062 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o2">_NumFrame</a>= 0;
+00063 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o3">_FrameSum</a>= 0;
+00064 }
+00065
+<a name="l00066"></a><a class="code" href="classNLMISC_1_1CValueSmoother.html#a3">00066</a> <font class="keywordtype">void</font> CValueSmoother::addValue(<font class="keywordtype">float</font> dt)
+00067 {
+00068 <font class="comment">// update the frame sum. NB: see init(), at start, array is full of 0. so it works even for un-inited values.</font>
+00069 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o3">_FrameSum</a>-= <a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>[<a class="code" href="classNLMISC_1_1CValueSmoother.html#o1">_CurFrame</a>];
+00070 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o3">_FrameSum</a>+= dt;
+00071
+00072 <font class="comment">// bkup this value in the array.</font>
+00073 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>[<a class="code" href="classNLMISC_1_1CValueSmoother.html#o1">_CurFrame</a>]= dt;
+00074
+00075 <font class="comment">// next frame.</font>
+00076 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o1">_CurFrame</a>++;
+00077 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o1">_CurFrame</a>%=<a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>.size();
+00078
+00079 <font class="comment">// update the number of frames added.</font>
+00080 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o2">_NumFrame</a>++;
+00081 <a class="code" href="classNLMISC_1_1CValueSmoother.html#o2">_NumFrame</a>= <a class="code" href="bit__set_8cpp.html#a0">min</a>(<a class="code" href="classNLMISC_1_1CValueSmoother.html#o2">_NumFrame</a>, <a class="code" href="classNLMISC_1_1CValueSmoother.html#o0">_LastFrames</a>.size());
+00082 }
+00083
+<a name="l00084"></a><a class="code" href="classNLMISC_1_1CValueSmoother.html#a4">00084</a> <font class="keywordtype">float</font> CValueSmoother::getSmoothValue()
+00085 {
+00086 <font class="keywordflow">if</font>(_NumFrame)
+00087 <font class="keywordflow">return</font> <a class="code" href="classNLMISC_1_1CValueSmoother.html#o3">_FrameSum</a> / <a class="code" href="classNLMISC_1_1CValueSmoother.html#o2">_NumFrame</a>;
+00088 <font class="keywordflow">else</font>
+00089 <font class="keywordflow">return</font> 0;
+00090 }
+00091
+00092
+00093
+00094 } <font class="comment">// NLMISC</font>
+</pre></div>
+
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