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<?xml version="1.0" encoding="UTF-8"?>
<!--
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) ENPC - Jean-Philippe Chancelier
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
*
-->
<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" version="5.0-subset Scilab" xml:lang="en" xml:id="xarc">
<refnamediv>
<refname>xarc</refname>
<refpurpose> draw a part of an ellipse</refpurpose>
</refnamediv>
<refsynopsisdiv>
<title>Calling Sequence</title>
<synopsis>xarc(x,y,w,h,a1,a2)</synopsis>
</refsynopsisdiv>
<refsection>
<title>Arguments</title>
<variablelist>
<varlistentry>
<term>x,y,w,h</term>
<listitem>
<para>four real values defining a rectangle.</para>
</listitem>
</varlistentry>
<varlistentry>
<term>a1,a2</term>
<listitem>
<para>real values defining a sector.</para>
</listitem>
</varlistentry>
</variablelist>
</refsection>
<refsection>
<title>Description</title>
<para>
<literal>xarc</literal> draws a part of an ellipse contained in the rectangle
<literal>(x,y,w,h)</literal> (upper-left point, width, height), and in the sector
defined by
the angle <literal>alpha1</literal> and the angle <literal>alpha1+alpha2</literal>.
<literal>alpha1</literal> and <literal>alpha2</literal> are
given respectively by <literal>a1/64</literal> degrees and <literal>a2/64</literal> degrees.
This function uses the current graphics color and user coordinates.
</para>
</refsection>
<refsection>
<title>Sample</title>
<scilab:image>
plot2d(0,0,-1,"031"," ",[-2,-2,2,2])
xset("color",3)
xarc(-1,1,2,2,0,90*64)
xarc(-1.5,1.5,3,3,0,360*64)
</scilab:image>
</refsection>
<refsection>
<title>Examples</title>
<programlisting role="example"><![CDATA[
// isoview scaling
plot2d(0,0,-1,"031"," ",[-2,-2,2,2])
xset("color",3)
xarc(-1,1,2,2,0,90*64)
xarc(-1.5,1.5,3,3,0,360*64)
]]></programlisting>
</refsection>
<refsection role="see also">
<title>See Also</title>
<simplelist type="inline">
<member>
<link linkend="xarcs">xarcs</link>
</member>
<member>
<link linkend="xfarc">xfarc</link>
</member>
<member>
<link linkend="xfarcs">xfarcs</link>
</member>
</simplelist>
</refsection>
</refentry>
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