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<h1>dox/Common/vtkRungeKutta4.h</h1><a href="a02121.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*=========================================================================</span>
<a name="l00002"></a>00002 <span class="comment"></span>
<a name="l00003"></a>00003 <span class="comment">  Program:   Visualization Toolkit</span>
<a name="l00004"></a>00004 <span class="comment">  Module:    $RCSfile: vtkRungeKutta4.h,v $</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen</span>
<a name="l00007"></a>00007 <span class="comment">  All rights reserved.</span>
<a name="l00008"></a>00008 <span class="comment">  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.</span>
<a name="l00009"></a>00009 <span class="comment"></span>
<a name="l00010"></a>00010 <span class="comment">     This software is distributed WITHOUT ANY WARRANTY; without even</span>
<a name="l00011"></a>00011 <span class="comment">     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR</span>
<a name="l00012"></a>00012 <span class="comment">     PURPOSE.  See the above copyright notice for more information.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment">=========================================================================*/</span>
<a name="l00031"></a>00031 <span class="preprocessor">#ifndef __vtkRungeKutta4_h</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#define __vtkRungeKutta4_h</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="a02061.html">vtkInitialValueProblemSolver.h</a>"</span>
<a name="l00035"></a>00035 
<a name="l00036"></a><a class="code" href="a01507.html">00036</a> <span class="keyword">class </span><a class="code" href="a02170.html#873ca0b83d0838a1df577536068a1730">VTK_COMMON_EXPORT</a> <a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a> : <span class="keyword">public</span> <a class="code" href="a00896.html" title="Integrate a set of ordinary differential equations (initial value problem) in time...">vtkInitialValueProblemSolver</a>
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 <span class="keyword">public</span>:
<a name="l00039"></a><a class="code" href="a01507.html#547d50a1ff68adeace212cc75220d04f">00039</a>   vtkTypeRevisionMacro(<a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a>,<a class="code" href="a00896.html" title="Integrate a set of ordinary differential equations (initial value problem) in time...">vtkInitialValueProblemSolver</a>);
<a name="l00040"></a>00040   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="a00896.html#912bb660a8b123a17d2a03fecdd9f3e5">PrintSelf</a>(ostream&amp; os, <a class="code" href="a00869.html" title="a simple class to control print indentation">vtkIndent</a> indent);
<a name="l00041"></a>00041 
<a name="l00043"></a>00043   <span class="keyword">static</span> <a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a> *<a class="code" href="a01084.html#4d5b227267c076d6f9e38483370b6612">New</a>();
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 
<a name="l00047"></a>00047 
<a name="l00053"></a><a class="code" href="a01507.html#f3fa8c9b6162f72b3720f85208dd58c3">00053</a>   <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(<span class="keywordtype">double</span>* xprev, <span class="keywordtype">double</span>* xnext, <span class="keywordtype">double</span> t,
<a name="l00054"></a>00054                               <span class="keywordtype">double</span>&amp; delT, <span class="keywordtype">double</span> maxError, <span class="keywordtype">double</span>&amp; error) 
<a name="l00055"></a>00055     {
<a name="l00056"></a>00056       <span class="keywordtype">double</span> minStep = delT;
<a name="l00057"></a>00057       <span class="keywordtype">double</span> maxStep = delT;
<a name="l00058"></a>00058       <span class="keywordtype">double</span> delTActual;
<a name="l00059"></a>00059       <span class="keywordflow">return</span> this-&gt;<a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(xprev, 0, xnext, t, delT, delTActual,
<a name="l00060"></a>00060                                    minStep, maxStep, maxError, error);
<a name="l00061"></a>00061     }
<a name="l00062"></a><a class="code" href="a01507.html#8560ecb1b44676c6de62a8413d66c689">00062</a>   <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(<span class="keywordtype">double</span>* xprev, <span class="keywordtype">double</span>* dxprev, <span class="keywordtype">double</span>* xnext, 
<a name="l00063"></a>00063                               <span class="keywordtype">double</span> t, <span class="keywordtype">double</span>&amp; delT, 
<a name="l00064"></a>00064                               <span class="keywordtype">double</span> maxError, <span class="keywordtype">double</span>&amp; error)
<a name="l00065"></a>00065     {
<a name="l00066"></a>00066       <span class="keywordtype">double</span> minStep = delT;
<a name="l00067"></a>00067       <span class="keywordtype">double</span> maxStep = delT;
<a name="l00068"></a>00068       <span class="keywordtype">double</span> delTActual;
<a name="l00069"></a>00069       <span class="keywordflow">return</span> this-&gt;<a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(xprev, dxprev, xnext, t, delT, delTActual,
<a name="l00070"></a>00070                                    minStep, maxStep, maxError, error);
<a name="l00071"></a>00071     }
<a name="l00072"></a><a class="code" href="a01507.html#bd6569769b64b1f7b024274ee3261dc1">00072</a>   <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(<span class="keywordtype">double</span>* xprev, <span class="keywordtype">double</span>* xnext, 
<a name="l00073"></a>00073                               <span class="keywordtype">double</span> t, <span class="keywordtype">double</span>&amp; delT, <span class="keywordtype">double</span>&amp; delTActual,
<a name="l00074"></a>00074                               <span class="keywordtype">double</span> minStep, <span class="keywordtype">double</span> maxStep,
<a name="l00075"></a>00075                               <span class="keywordtype">double</span> maxError, <span class="keywordtype">double</span>&amp; error)
<a name="l00076"></a>00076     {
<a name="l00077"></a>00077       <span class="keywordflow">return</span> this-&gt;<a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(xprev, 0, xnext, t, delT, delTActual,
<a name="l00078"></a>00078                                    minStep, maxStep, maxError, error);
<a name="l00079"></a>00079     }
<a name="l00080"></a>00080   <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="a00896.html#cc612bf025e902636510bc04ae83a168">ComputeNextStep</a>(<span class="keywordtype">double</span>* xprev, <span class="keywordtype">double</span>* dxprev, <span class="keywordtype">double</span>* xnext, 
<a name="l00081"></a>00081                               <span class="keywordtype">double</span> t, <span class="keywordtype">double</span>&amp; delT, <span class="keywordtype">double</span>&amp; delTActual,
<a name="l00082"></a>00082                               <span class="keywordtype">double</span> minStep, <span class="keywordtype">double</span> maxStep, 
<a name="l00083"></a>00083                               <span class="keywordtype">double</span> maxError, <span class="keywordtype">double</span>&amp; error);
<a name="l00085"></a>00085 
<a name="l00086"></a>00086 <span class="keyword">protected</span>:
<a name="l00087"></a>00087   <a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a>();
<a name="l00088"></a>00088   ~<a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a>();
<a name="l00089"></a>00089 
<a name="l00090"></a>00090   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="a00896.html#2c253895c597dfe4f64ae58c267649a6">Initialize</a>();
<a name="l00091"></a>00091 
<a name="l00092"></a><a class="code" href="a01507.html#5198f4d4d7f34db3e1f6db9983823bd2">00092</a>   <span class="keywordtype">double</span>* NextDerivs[3];
<a name="l00093"></a>00093 <span class="keyword">private</span>:
<a name="l00094"></a>00094   <a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a>(<span class="keyword">const</span> <a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a>&amp;);  <span class="comment">// Not implemented.</span>
<a name="l00095"></a>00095   <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> <a class="code" href="a01507.html" title="Integrate an initial value problem using 4th order Runge-Kutta method.">vtkRungeKutta4</a>&amp;);  <span class="comment">// Not implemented.</span>
<a name="l00096"></a>00096 };
<a name="l00097"></a>00097 
<a name="l00098"></a>00098 <span class="preprocessor">#endif</span>
<a name="l00099"></a>00099 <span class="preprocessor"></span>
<a name="l00100"></a>00100 
<a name="l00101"></a>00101 
<a name="l00102"></a>00102 
<a name="l00103"></a>00103 
<a name="l00104"></a>00104 
<a name="l00105"></a>00105 
<a name="l00106"></a>00106 
</pre></div></div>
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