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<div class="refentry" title="linseg">
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<h2>
<span class="refentrytitle">linseg</span>
</h2>
<p>linseg —
Trace a series of line segments between specified points.
</p>
</div>
<div class="refsect1" title="Description">
<a id="idp28428480"></a>
<h2>Description</h2>
<p>
Trace a series of line segments between specified points.
</p>
</div>
<div class="refsect1" title="Syntax">
<a id="idp28429152"></a>
<h2>Syntax</h2>
<pre class="synopsis">ares <span class="command"><strong>linseg</strong></span> ia, idur1, ib [, idur2] [, ic] [...]</pre>
<pre class="synopsis">kres <span class="command"><strong>linseg</strong></span> ia, idur1, ib [, idur2] [, ic] [...]</pre>
</div>
<div class="refsect1" title="Initialization">
<a id="idp28478408"></a>
<h2>Initialization</h2>
<p>
<span class="emphasis"><em>ia</em></span> -- starting value.
</p>
<p>
<span class="emphasis"><em>ib, ic</em></span>, etc. -- value after <span class="emphasis"><em>dur1</em></span> seconds, etc.
</p>
<p>
<span class="emphasis"><em>idur1</em></span> -- duration in seconds of first segment. A zero or negative value will cause all initialization to be skipped.
</p>
<p>
<span class="emphasis"><em>idur2, idur3</em></span>, etc. -- duration in seconds of subsequent segments. A zero or negative value will terminate the initialization process with the preceding point, permitting the last-defined line or curve to be continued indefinitely in performance. The default is zero.
</p>
</div>
<div class="refsect1" title="Performance">
<a id="idp28481096"></a>
<h2>Performance</h2>
<p>
These units generate control or audio signals whose values can pass through 2 or more specified points. The sum of <span class="emphasis"><em>dur</em></span> values may or may not equal the instrument's performance time: a shorter performance will truncate the specified pattern, while a longer one will cause the last value to be repeated until the end of the note.
</p>
</div>
<div class="refsect1" title="Examples">
<a id="idp28482232"></a>
<h2>Examples</h2>
<p>
Here is an example of the linseg opcode. It uses the file <a class="ulink" href="examples/linseg.csd" target="_top"><em class="citetitle">linseg.csd</em></a>.
</p>
<div class="example">
<a id="idp28483200"></a>
<p class="title">
<strong>Example 393. Example of the linseg 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>
<pre class="programlisting">
<span class="csdtag"><CsoundSynthesizer></span>
<span class="csdtag"><CsOptions></span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">;-o linseg.wav -W ;;; for file output any platform</span>
<span class="csdtag"></CsOptions></span>
<span class="csdtag"><CsInstruments></span>
<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span> <span class="op">=</span> 1
giSine <span class="ohdr">ftgen</span> 0, 0, 2^10, 10, 1
<span class="oblock">instr</span> 1
kcps <span class="op">=</span> <span class="opc">cpspch</span>(p4)
kenv <span class="opc">linseg</span> 0, 0.25, 1, 0.75, 0 <span class="comment">; together = 1 sec</span>
asig <span class="opc">poscil</span> kenv, kcps, giSine
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="oblock">instr</span> 2 <span class="comment">; scaling to duration</span>
kcps <span class="op">=</span> <span class="opc">cpspch</span>(p4)
kenv <span class="opc">linseg</span> 0, p3<span class="op">*</span>0.25, 1, p3<span class="op">*</span>0.75, 0
asig <span class="opc">poscil</span> kenv, kcps, giSine
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="oblock">instr</span> 3 <span class="comment">; with negative value</span>
kcps <span class="op">=</span> <span class="opc">cpspch</span>(p4)
aenv <span class="opc">linseg</span> 0, 0.1, 1, 0.5, <span class="op">-</span>0.9, 0.4, 0
asig <span class="opc">poscil</span> aenv, kcps, giSine
<span class="opc">outs</span> asig, asig
<span class="oblock">endin</span>
<span class="csdtag"></CsInstruments></span>
<span class="csdtag"><CsScore></span>
<span class="stamnt">i</span> 1 0 1 7.00 <span class="comment">; = 1 sec, p3 fits exactly</span>
<span class="stamnt">i</span> 1 2 2 7.00 <span class="comment">; = 2 sec, p3 truncated at 1 sec</span>
<span class="stamnt">i</span> 2 4 1 7.00 <span class="comment">; scales to duration</span>
<span class="stamnt">i</span> 2 6 2 7.00 <span class="comment">; of p3</span>
<span class="stamnt">i</span> 3 9 2 7.00
<span class="stamnt">e</span>
<span class="csdtag"></CsScore></span>
<span class="csdtag"></CsoundSynthesizer></span>
</pre>
</div>
</div>
<p><br class="example-break" />
</p>
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<div class="refsect1" title="See Also">
<a id="idp28485472"></a>
<h2>See Also</h2>
<p>
<a class="link" href="expon.html" title="expon"><em class="citetitle">expon</em></a>,
<a class="link" href="expseg.html" title="expseg"><em class="citetitle">expseg</em></a>,
<a class="link" href="expsegb.html" title="expsegb"><em class="citetitle">expsegb</em></a>,
<a class="link" href="expsegr.html" title="expsegr"><em class="citetitle">expsegr</em></a>,
<a class="link" href="cosseg.html" title="cosseg"><em class="citetitle">cosseg</em></a>,
<a class="link" href="line.html" title="line"><em class="citetitle">line</em></a>,
<a class="link" href="linsegr.html" title="linsegr"><em class="citetitle">linsegr</em></a>
<a class="link" href="transeg.html" title="transeg"><em class="citetitle">transeg</em></a>
<a class="link" href="transegb.html" title="transegb"><em class="citetitle">transegb</em></a>
</p>
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<div class="refsect1" title="Credits">
<a id="idp28490296"></a>
<h2>Credits</h2>
<p>
</p>
<table border="0" summary="Simple list" class="simplelist">
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<td>Author: Barry L. Vercoe</td>
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