<?xml version="1.0" encoding="iso-8859-1"?>
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<refentry xml:id="function.ps-arc" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>ps_arc</refname>
  <refpurpose>Draws an arc counterclockwise</refpurpose>
 </refnamediv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>ps_arc</methodname>
   <methodparam><type>resource</type><parameter>psdoc</parameter></methodparam>
   <methodparam><type>float</type><parameter>x</parameter></methodparam>
   <methodparam><type>float</type><parameter>y</parameter></methodparam>
   <methodparam><type>float</type><parameter>radius</parameter></methodparam>
   <methodparam><type>float</type><parameter>alpha</parameter></methodparam>
   <methodparam><type>float</type><parameter>beta</parameter></methodparam>
  </methodsynopsis>
  <para>
   Draws a portion of a circle with at middle point at
   (<parameter>x</parameter>, <parameter>y</parameter>). The arc starts at an
   angle of <parameter>alpha</parameter> and ends at an angle of
   <parameter>beta</parameter>. It is drawn counterclockwise (use
   <function>ps_arcn</function> to draw clockwise). The subpath added
   to the current path starts on the arc at angle <parameter>alpha</parameter>
   and ends on the arc at angle <parameter>beta</parameter>.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>psdoc</parameter></term>
     <listitem>
      <para>
       Resource identifier of the postscript file
       as returned by <function>ps_new</function>.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>x</parameter></term>
     <listitem>
      <para>
       The x-coordinate of the circle's middle point.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>y</parameter></term>
     <listitem>
      <para>
       The y-coordinate of the circle's middle point.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>radius</parameter></term>
     <listitem>
      <para>
       The radius of the circle 
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>alpha</parameter></term>
     <listitem>
      <para>
       The start angle given in degrees.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>beta</parameter></term>
     <listitem>
      <para>
       The end angle given in degrees.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   &return.success;
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>ps_arcn</function></member>
   </simplelist>
  </para>
 </refsect1>
</refentry>

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