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<h1>Mesh2D.h</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#ifndef STK_MESH2D_H</span>
<a name="l00002"></a>00002 <span class="preprocessor"></span><span class="preprocessor">#define STK_MESH2D_H</span>
<a name="l00003"></a>00003 <span class="preprocessor"></span>
<a name="l00004"></a>00004 <span class="preprocessor">#include "Instrmnt.h"</span>
<a name="l00005"></a>00005 <span class="preprocessor">#include "OnePole.h"</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="keyword">namespace </span>stk {
<a name="l00008"></a>00008
<a name="l00009"></a>00009 <span class="comment">/***************************************************/</span>
<a name="l00033"></a>00033 <span class="comment">/***************************************************/</span>
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> NXMAX = 12;
<a name="l00036"></a>00036 <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> NYMAX = 12;
<a name="l00037"></a>00037
<a name="l00038"></a><a class="code" href="classstk_1_1Mesh2D.html">00038</a> <span class="keyword">class </span><a class="code" href="classstk_1_1Mesh2D.html" title="Two-dimensional rectilinear waveguide mesh class.">Mesh2D</a> : <span class="keyword">public</span> <a class="code" href="classstk_1_1Instrmnt.html" title="STK instrument abstract base class.">Instrmnt</a>
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">public</span>:
<a name="l00042"></a>00042 <a class="code" href="classstk_1_1Mesh2D.html#aef48c3c65901f62a8dbdbe606763203e" title="Class constructor, taking the x and y dimensions in samples.">Mesh2D</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> nX, <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> nY );
<a name="l00043"></a>00043
<a name="l00045"></a>00045 <a class="code" href="classstk_1_1Mesh2D.html#ac4abd6b5190587d69c7c2b13870fb646" title="Class destructor.">~Mesh2D</a>( <span class="keywordtype">void</span> );
<a name="l00046"></a>00046
<a name="l00048"></a>00048 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#a49f56b4865dc041ae874fbc1b80e967b" title="Reset and clear all internal state.">clear</a>( <span class="keywordtype">void</span> );
<a name="l00049"></a>00049
<a name="l00051"></a>00051 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#a6834a52f03b072e18387b799f804527b" title="Set the x dimension size in samples.">setNX</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> lenX );
<a name="l00052"></a>00052
<a name="l00054"></a>00054 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#a2be2badaccfeb57e52e548f1b7515fbe" title="Set the y dimension size in samples.">setNY</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> lenY );
<a name="l00055"></a>00055
<a name="l00057"></a>00057 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#a9cdfa80ecccf3f12dc184003458ba3a3" title="Set the x, y input position on a 0.0 - 1.0 scale.">setInputPosition</a>( StkFloat xFactor, StkFloat yFactor );
<a name="l00058"></a>00058
<a name="l00060"></a>00060 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#ab7b3d950e40308e7060e5ff9a62a8b8d" title="Set the loss filters gains (0.0 - 1.0).">setDecay</a>( StkFloat decayFactor );
<a name="l00061"></a>00061
<a name="l00063"></a>00063 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#a7915dae1032ace5960c85790a7b93e0f" title="Impulse the mesh with the given amplitude (frequency ignored).">noteOn</a>( StkFloat frequency, StkFloat amplitude );
<a name="l00064"></a>00064
<a name="l00066"></a>00066 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#a0580962b3cc0dbac092581d0fc15127b" title="Stop a note with the given amplitude (speed of decay) ... currently ignored.">noteOff</a>( StkFloat amplitude );
<a name="l00067"></a>00067
<a name="l00069"></a>00069 StkFloat <a class="code" href="classstk_1_1Mesh2D.html#a52d9552b67edea0fc6ff3e949d6331a0" title="Calculate and return the signal energy stored in the mesh.">energy</a>( <span class="keywordtype">void</span> );
<a name="l00070"></a>00070
<a name="l00072"></a>00072 StkFloat <a class="code" href="classstk_1_1Mesh2D.html#a688bed8725ef2d8bf4c6465251bd8b86" title="Input a sample to the mesh and compute one output sample.">inputTick</a>( StkFloat input );
<a name="l00073"></a>00073
<a name="l00075"></a>00075 <span class="keywordtype">void</span> <a class="code" href="classstk_1_1Mesh2D.html#acc618a91b288305785644d852cfdaf83" title="Perform the control change specified by number and value (0.0 - 128.0).">controlChange</a>( <span class="keywordtype">int</span> number, StkFloat value );
<a name="l00076"></a>00076
<a name="l00078"></a>00078 StkFloat <a class="code" href="classstk_1_1Mesh2D.html#ae8a7e86e4774d8738098c79ab0d5e00a" title="Compute and return one output sample.">tick</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00079"></a>00079
<a name="l00081"></a>00081
<a name="l00088"></a>00088 <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1Mesh2D.html#ae8a7e86e4774d8738098c79ab0d5e00a" title="Compute and return one output sample.">tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel = 0 );
<a name="l00089"></a>00089
<a name="l00090"></a>00090 <span class="keyword">protected</span>:
<a name="l00091"></a>00091
<a name="l00092"></a>00092 StkFloat tick0();
<a name="l00093"></a>00093 StkFloat tick1();
<a name="l00094"></a>00094 <span class="keywordtype">void</span> clearMesh();
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> NX_, NY_;
<a name="l00097"></a>00097 <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> xInput_, yInput_;
<a name="l00098"></a>00098 <a class="code" href="classstk_1_1OnePole.html" title="STK one-pole filter class.">OnePole</a> filterX_[NXMAX];
<a name="l00099"></a>00099 <a class="code" href="classstk_1_1OnePole.html" title="STK one-pole filter class.">OnePole</a> filterY_[NYMAX];
<a name="l00100"></a>00100 StkFloat v_[NXMAX-1][NYMAX-1]; <span class="comment">// junction velocities</span>
<a name="l00101"></a>00101 StkFloat vxp_[NXMAX][NYMAX]; <span class="comment">// positive-x velocity wave</span>
<a name="l00102"></a>00102 StkFloat vxm_[NXMAX][NYMAX]; <span class="comment">// negative-x velocity wave</span>
<a name="l00103"></a>00103 StkFloat vyp_[NXMAX][NYMAX]; <span class="comment">// positive-y velocity wave</span>
<a name="l00104"></a>00104 StkFloat vym_[NXMAX][NYMAX]; <span class="comment">// negative-y velocity wave</span>
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="comment">// Alternate buffers</span>
<a name="l00107"></a>00107 StkFloat vxp1_[NXMAX][NYMAX]; <span class="comment">// positive-x velocity wave</span>
<a name="l00108"></a>00108 StkFloat vxm1_[NXMAX][NYMAX]; <span class="comment">// negative-x velocity wave</span>
<a name="l00109"></a>00109 StkFloat vyp1_[NXMAX][NYMAX]; <span class="comment">// positive-y velocity wave</span>
<a name="l00110"></a>00110 StkFloat vym1_[NXMAX][NYMAX]; <span class="comment">// negative-y velocity wave</span>
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordtype">int</span> counter_; <span class="comment">// time in samples</span>
<a name="l00113"></a>00113 };
<a name="l00114"></a>00114
<a name="l00115"></a><a class="code" href="classstk_1_1Mesh2D.html#a0bfe62f0ab05859963571f4a9a569bd8">00115</a> <span class="keyword">inline</span> <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& <a class="code" href="classstk_1_1Mesh2D.html#ae8a7e86e4774d8738098c79ab0d5e00a" title="Compute and return one output sample.">Mesh2D :: tick</a>( <a class="code" href="classstk_1_1StkFrames.html" title="An STK class to handle vectorized audio data.">StkFrames</a>& frames, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channel )
<a name="l00116"></a>00116 {
<a name="l00117"></a>00117 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nChannels = lastFrame_.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>();
<a name="l00118"></a>00118 <span class="preprocessor">#if defined(_STK_DEBUG_)</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span> <span class="keywordflow">if</span> ( channel > frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels ) {
<a name="l00120"></a>00120 oStream_ << <span class="stringliteral">"Mesh2D::tick(): channel and StkFrames arguments are incompatible!"</span>;
<a name="l00121"></a>00121 <a class="code" href="classstk_1_1Stk.html#a48ac73a0d8ca28445ba1a054e1f061ff" title="Static function for error reporting and handling using c-strings.">handleError</a>( StkError::FUNCTION_ARGUMENT );
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 <span class="preprocessor">#endif</span>
<a name="l00124"></a>00124 <span class="preprocessor"></span>
<a name="l00125"></a>00125 StkFloat *samples = &frames[channel];
<a name="l00126"></a>00126 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j, hop = frames.<a class="code" href="classstk_1_1StkFrames.html#aec7ef9c46675a24111aa6e2fda3ba870" title="Return the number of channels represented by the data.">channels</a>() - nChannels;
<a name="l00127"></a>00127 <span class="keywordflow">if</span> ( nChannels == 1 ) {
<a name="l00128"></a>00128 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop )
<a name="l00129"></a>00129 *samples++ = <a class="code" href="classstk_1_1Mesh2D.html#ae8a7e86e4774d8738098c79ab0d5e00a" title="Compute and return one output sample.">tick</a>();
<a name="l00130"></a>00130 }
<a name="l00131"></a>00131 <span class="keywordflow">else</span> {
<a name="l00132"></a>00132 <span class="keywordflow">for</span> ( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0; i<frames.<a class="code" href="classstk_1_1StkFrames.html#a05b1ab6fa750a8221a7d65c30e0cdab9" title="Return the number of sample frames represented by the data.">frames</a>(); i++, samples += hop ) {
<a name="l00133"></a>00133 *samples++ = <a class="code" href="classstk_1_1Mesh2D.html#ae8a7e86e4774d8738098c79ab0d5e00a" title="Compute and return one output sample.">tick</a>();
<a name="l00134"></a>00134 <span class="keywordflow">for</span> ( j=1; j<nChannels; j++ )
<a name="l00135"></a>00135 *samples++ = lastFrame_[j];
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="keywordflow">return</span> frames;
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 } <span class="comment">// stk namespace</span>
<a name="l00143"></a>00143
<a name="l00144"></a>00144 <span class="preprocessor">#endif</span>
</pre></div></div>
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