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<refentry id="cosseg">
<indexterm id="IndexCosseg"><primary>cosseg</primary></indexterm>
<refentryinfo><title>Signal Generators:Linear and Exponential Generators</title></refentryinfo>
<refmeta>
<refentrytitle>cosseg</refentrytitle>
</refmeta>
<refnamediv>
<refname>cosseg</refname>
<refpurpose>
Trace a series of line segments between specified points with
cosine interpolation.
</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>
Trace a series of line segments between specified points with
cosine interpolation.
</para>
</refsect1>
<refsect1>
<title>Syntax</title>
<synopsis>ares <command>cosseg</command> ia, idur1, ib [, idur2] [, ic] [...]</synopsis>
<synopsis>kres <command>cosseg</command> ia, idur1, ib [, idur2] [, ic] [...]</synopsis>
</refsect1>
<refsect1>
<title>Initialization</title>
<para>
<emphasis>ia</emphasis> -- starting value.
</para>
<para>
<emphasis>ib, ic</emphasis>, etc. -- value after
<emphasis>dur1</emphasis> seconds, etc.
</para>
<para>
<emphasis>idur1</emphasis> -- duration in seconds of first
segment. A zero or negative value will cause all initialization
to be skipped.
</para>
<para>
<emphasis>idur2, idur3</emphasis>, 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.
</para>
</refsect1>
<refsect1>
<title>Performance</title>
<para>
These units generate control or audio signals whose values can
pass through 2 or more specified points. The sum of
<emphasis>dur</emphasis> 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.
</para>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
Here is an example of the cosseg opcode. It uses the file <ulink url="examples/cosseg.csd"><citetitle>cosseg.csd</citetitle></ulink>.
<example>
<title>Example of the cosseg opcode.</title>
<para>See the sections <link linkend="UsingRealTime"><citetitle>Real-time Audio</citetitle></link> and <link linkend="CommandFlags"><citetitle>Command Line Flags</citetitle></link> for more information on using command line flags.</para>
<xi:include href="examples-xml/cosseg.csd.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
</example>
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<link linkend="expon"><citetitle>expon</citetitle></link>,
<link linkend="expseg"><citetitle>expseg</citetitle></link>,
<link linkend="expsegb"><citetitle>expsegb</citetitle></link>,
<link linkend="expsegr"><citetitle>expsegr</citetitle></link>,
<link linkend="line"><citetitle>line</citetitle></link>,
<link linkend="linseg"><citetitle>linseg</citetitle></link>,
<link linkend="linsegr"><citetitle>linsegr</citetitle></link>
<link linkend="transeg"><citetitle>transeg</citetitle></link>
<link linkend="transegb"><citetitle>transegb</citetitle></link>
</para>
</refsect1>
<refsect1>
<title>Credits</title>
<para>
<simplelist>
<member>Author: &namejohn;</member>
<member>Aug 2012 </member>
</simplelist>
</para>
<para> New in version 5.18</para>
</refsect1>
</refentry>
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