cairo/doc/reference/xml/cairo_set_tolerance.xml

<refentry id="cairo_set_tolerance">
  <refmeta>
    <refentrytitle>cairo_set_tolerance</refentrytitle>
    <manvolnum>3</manvolnum>
  </refmeta>
  <refnamediv>
    <refname>cairo_set_tolerance</refname>
    <refpurpose>set accuracy of painting operations</refpurpose>
  </refnamediv>
  <refsynopsisdiv>
    <programlisting>
void cairo_set_tolerance (<link linkend="cairo_t">cairo_t</link> *cr, double tolerance)</programlisting>
    <variablelist role="params">
      <varlistentry>
        <term><parameter>cr</parameter> :</term>
        <listitem>
          <simpara>a <link linkend="cairo_t">cairo_t</link></simpara>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term><parameter>tolerance</parameter> :</term>
        <listitem>
          <simpara>the accuracy in device pixels</simpara>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsynopsisdiv>
  <refsect1>
    <title>Description</title>
    <para>
      <indexterm>
        <primary>functions</primary>
        <secondary>cairo_set_tolerance</secondary>
      </indexterm>
      <indexterm>
        <primary/>
      </indexterm>
      This function adjusts the error tolerance for tesselating curved objects. The default value is 0.1 (device pixels). This function can be used to trade speed against accuracy.
    </para>
  </refsect1>
</refentry>