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<h2>
<span class="refentrytitle">xscanmap</span>
</h2>
<p>xscanmap —
Allows the position and velocity of a node in a scanned process to be read.
</p>
</div>
<div class="refsect1">
<a id="idm281472867971864"></a>
<h2>Description</h2>
<p>
Allows the position and velocity of a node in a scanned process to be read.
</p>
</div>
<div class="refsect1">
<a id="idm281472867890536"></a>
<h2>Syntax</h2>
<pre class="synopsis">kpos, kvel <span class="command"><strong>xscanmap</strong></span> iscan, kamp, kvamp [, iwhich]</pre>
</div>
<div class="refsect1">
<a id="idm281472867888312"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>iscan</em></span> -- which scan process to read
</p>
<p>
<span class="emphasis"><em>iwhich</em></span> (optional) -- which node to sense. The default is 0.
</p>
</div>
<div class="refsect1">
<a id="idm281472867885864"></a>
<h2>Performance</h2>
<p>
<span class="emphasis"><em>kamp</em></span> -- amount to amplify the <span class="emphasis"><em>kpos</em></span> value.
</p>
<p>
<span class="emphasis"><em>kvamp</em></span> -- amount to amplify the <span class="emphasis"><em>kvel</em></span> value.
</p>
<p>
The internal state of a node is read. This includes its position and velocity. They are amplified by the <span class="emphasis"><em>kamp</em></span> and <span class="emphasis"><em>kvamp</em></span> values.
</p>
</div>
<div class="refsect1">
<a id="idm281472867881064"></a>
<h2>Examples</h2>
<p>
Here is an example of the xscanmap opcode. It uses the file <a class="ulink" href="examples/xscanmap.csd" target="_top"><em class="citetitle">xscanmap.csd</em></a>.
</p>
<div class="example">
<a id="idm281472867879208"></a>
<p class="title">
<strong>Example 1138. Example of the xscanmap opcode.</strong>
</p>
<div class="example-contents">
<p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
<div class="refsect1">
<a id="idm281472687879720"></a>
<pre class="programlisting">
<span class="nt"><CsoundSynthesizer></span>
<span class="nt"><CsOptions></span>
<span class="c1">; Select audio/midi flags here according to platform</span>
-odac <span class="c1">;;;realtime audio out</span>
<span class="c1">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="c1">; For Non-realtime ouput leave only the line below:</span>
<span class="c1">; -o xscanmap.wav -W ;;; for file output any platform</span>
<span class="nt"></CsOptions></span>
<span class="nt"><CsInstruments></span>
<span class="vg">sr</span> <span class="o">=</span> <span class="mi">44100</span>
<span class="vg">ksmps</span> <span class="o">=</span> <span class="mi">32</span>
<span class="vg">nchnls</span> <span class="o">=</span> <span class="mi">2</span>
<span class="vg">0dbfs</span> <span class="o">=</span> <span class="mi">1</span>
<span class="c1">;the matrices can be found in /manual/examples</span>
<span class="kd">instr</span> <span class="nf">1</span> <span class="c1">; Plain scanned syntnesis</span>
<span class="c1">; note - scanu display is turned off</span>
a<span class="n">0</span> <span class="o">=</span> <span class="mi">0</span>
<span class="nb">xscanu</span> <span class="mi">1</span><span class="p">,</span> <span class="mf">.01</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="s">"128-stringcircularX"</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mf">.1</span><span class="p">,</span> <span class="mf">.1</span><span class="p">,</span> <span class="o">-</span><span class="mf">.01</span><span class="p">,</span> <span class="mf">.1</span><span class="p">,</span> <span class="mf">.5</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> a<span class="n">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span>
a<span class="n">1</span> <span class="nb">xscans</span> <span class="nb">p4</span><span class="p">,</span> <span class="nb">cpspch</span><span class="p">(</span><span class="nb">p5</span><span class="p">),</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">3</span>
k<span class="n">1</span><span class="p">,</span>k<span class="n">2</span> <span class="nb">xscanmap</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1000</span><span class="p">,</span> <span class="mi">1000</span><span class="p">,</span> <span class="mi">64</span>
<span class="nb">display</span> k<span class="n">1</span><span class="p">,</span> <span class="mf">.25</span> <span class="c1">; note - display is updated every second</span>
<span class="nb">outs</span> a<span class="n">1</span><span class="p">,</span> a<span class="n">1</span>
<span class="kd">endin</span>
<span class="kd">instr</span> <span class="nf">2</span> <span class="c1">; Scan synthesis with audio injection and dual scan paths</span>
<span class="c1">; note - scanu display is turned off</span>
a<span class="n">in</span> <span class="nb">diskin2</span> <span class="s">"fox.wav"</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span class="mi">0</span><span class="p">,</span><span class="mi">1</span>
a<span class="n">in</span> <span class="nb">in</span>
a<span class="n">0</span> <span class="o">=</span> a<span class="n">in</span><span class="o">/</span><span class="mi">10000</span>
<span class="nb">xscanu</span> <span class="mi">1</span><span class="p">,</span> <span class="mf">.01</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="s">"128,8-gridX"</span><span class="p">,</span> <span class="mi">14</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mf">.01</span><span class="p">,</span> <span class="mf">.05</span><span class="p">,</span> <span class="o">-</span><span class="mf">.05</span><span class="p">,</span> <span class="mf">.1</span><span class="p">,</span> <span class="mf">.5</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> a<span class="n">0</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">0</span>
a<span class="n">1</span> <span class="nb">xscans</span> <span class="nb">p4</span><span class="p">,</span> <span class="nb">cpspch</span><span class="p">(</span><span class="nb">p5</span><span class="p">),</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">2</span>
a<span class="n">2</span> <span class="nb">xscans</span> <span class="nb">p4</span><span class="p">,</span> <span class="nb">cpspch</span><span class="p">(</span><span class="nb">p6</span><span class="p">),</span> <span class="mi">77</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">3</span>
k<span class="n">1</span><span class="p">,</span>k<span class="n">2</span> <span class="nb">xscanmap</span> <span class="mi">0</span><span class="p">,</span> <span class="mi">1000</span><span class="p">,</span> <span class="mi">1000</span><span class="p">,</span> <span class="mi">127</span>
<span class="nb">display</span> k<span class="n">2</span><span class="p">,</span> <span class="mf">.5</span> <span class="c1">; note - display is updated ever 500ms</span>
<span class="nb">outs</span> a<span class="n">1</span><span class="p">,</span>a<span class="n">2</span>
<span class="kd">endin</span>
<span class="nt"></CsInstruments></span>
<span class="nt"><CsScore></span>
<span class="c1">; Initial condition</span>
<span class="c1">;f1 0 16 7 0 8 1 8 0</span>
<span class="nb">f</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">128</span> <span class="mi">7</span> <span class="mi">0</span> <span class="mi">64</span> <span class="mi">1</span> <span class="mi">64</span> <span class="mi">0</span>
<span class="c1">; Masses</span>
<span class="nb">f</span><span class="mi">2</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">7</span> <span class="mi">1</span> <span class="mi">128</span> <span class="mi">1</span>
<span class="c1">; Centering force</span>
<span class="nb">f</span><span class="mi">4</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">7</span> <span class="mi">0</span> <span class="mi">128</span> <span class="mi">2</span>
<span class="nb">f</span><span class="mi">14</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">7</span> <span class="mi">2</span> <span class="mi">64</span> <span class="mi">0</span> <span class="mi">64</span> <span class="mi">2</span>
<span class="c1">; Damping</span>
<span class="nb">f</span><span class="mi">5</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">7</span> <span class="mi">1</span> <span class="mi">128</span> <span class="mi">1</span>
<span class="c1">; Initial velocity</span>
<span class="nb">f</span><span class="mi">6</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">7</span> <span class="o">-</span><span class="mf">.0</span> <span class="mi">128</span> <span class="mf">.0</span>
<span class="c1">; Trajectories</span>
<span class="nb">f</span><span class="mi">7</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">5</span> <span class="mf">.001</span> <span class="mi">128</span> <span class="mi">128</span>
<span class="nb">f</span><span class="mi">77</span> <span class="mi">0</span> <span class="mi">128</span> <span class="o">-</span><span class="mi">23</span> <span class="s">"128-spiral-8,16,128,2,1over2"</span>
<span class="c1">; Sine</span>
<span class="nb">f</span><span class="mi">9</span> <span class="mi">0</span> <span class="mi">1024</span> <span class="mi">10</span> <span class="mi">1</span>
<span class="c1">;--------------------------------</span>
<span class="c1">; Note list</span>
<span class="nb">i</span><span class="mi">1</span> <span class="mi">0</span> <span class="mi">10</span> <span class="mf">.9</span> <span class="mf">7.00</span>
<span class="nb">s</span>
<span class="nb">i</span><span class="mi">2</span> <span class="mi">0</span> <span class="mi">10</span> <span class="mi">1</span> <span class="mf">8.00</span> <span class="mf">6.00</span>
<span class="nb">i</span><span class="mi">2</span> <span class="mi">0</span> <span class="mi">10</span> <span class="mi">1</span> <span class="mf">7.00</span> <span class="mf">8.05</span>
<span class="nb">e</span>
<span class="nt"></CsScore></span>
<span class="nt"></CsoundSynthesizer></span>
</pre>
</div>
</div>
</div>
<p><br class="example-break" />
</p>
</div>
<div class="refsect1">
<a id="idm281472867874920"></a>
<h2>See Also</h2>
<p>
More information on Scanned Synthesis (as well as several other matrices) is available on the <a class="ulink" href="http://www.csounds.com/scanned/" target="_top"><em class="citetitle">Scanned Synthesis page</em></a> at cSounds.com.
</p>
<p> Also an article on these opcodes: <a class="ulink" href="http://www.csounds.com/stevenyi/scanned/yi_scannedSynthesis.html" target="_top"><em class="citetitle">http://www.csounds.com/stevenyi/scanned/yi_scannedSynthesis.html</em></a> , written by Steven Yi </p>
</div>
<div class="refsect1">
<a id="idm281472867871432"></a>
<h2>Credits</h2>
<p>Author: John ffitch</p>
<p>New in version 4.20</p>
</div>
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