<?xml version="1.0" encoding="UTF-8"?>
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 * Scilab ( https://www.scilab.org/ ) - This file is part of Scilab
 * Copyright (C) ENPC - Jean-Philippe Chancelier
 *
 * Copyright (C) 2012 - 2016 - Scilab Enterprises
 *
 * This file is hereby licensed under the terms of the GNU GPL v2.0,
 * pursuant to article 5.3.4 of the CeCILL v.2.1.
 * This file was originally licensed under the terms of the CeCILL v2.1,
 * and continues to be available under such terms.
 * For more information, see the COPYING file which you should have received
 * along with this program.
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<refentry xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:svg="http://www.w3.org/2000/svg" xmlns:ns4="http://www.w3.org/1999/xhtml" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:db="http://docbook.org/ns/docbook" xmlns:scilab="http://www.scilab.org" xml:id="xarc" xml:lang="pt">
    <refnamediv>
        <refname>xarc</refname>
        <refpurpose>esboça parte de uma elipse</refpurpose>
    </refnamediv>
    <refsynopsisdiv>
        <title>Seqüência de Chamamento</title>
        <synopsis>xarc(x,y,w,h,a1,a2)</synopsis>
    </refsynopsisdiv>
    <refsection>
        <title>Parâmetros</title>
        <variablelist>
            <varlistentry>
                <term>x,y,w,h</term>
                <listitem>
                    <para>quatro valores reais definindo um retângulo </para>
                </listitem>
            </varlistentry>
            <varlistentry>
                <term>a1,a2</term>
                <listitem>
                    <para>valores reais definindo um setor </para>
                </listitem>
            </varlistentry>
        </variablelist>
    </refsection>
    <refsection>
        <title>Descrição</title>
        <para>
            <literal>xarc</literal> desenha parte de uma elipse contida no
            retângulo <literal>(x,y,w,h)</literal> ( (ponto superior esquerdo,
            largura, altura), e no setor definido pelo ângulo
            <literal>alpha1</literal>e o ângulo <literal>alpha1+alpha2</literal>.
            <literal>alpha1</literal> e <literal>alpha2</literal> são respectivamente
            dados por <literal>a1/64</literal> graus e <literal>a2/64</literal> graus.
            Esta função usa a cor e a escala gráfica correntes.
        </para>
    </refsection>
    <refsection>
        <title>Exemplos</title>
        <programlisting role="example"><![CDATA[
// escala de isovisualização
plot2d(0,0,-1,"031"," ",[-2,-2,2,2])
xarc(-1,1,2,2,0,90*64)
xarc(-1.5,1.5,3,3,0,360*64)
gca().children(1:2).foreground = color("green");
]]></programlisting>
    </refsection>
    <refsection role="see also">
        <title>Ver Também</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>
