doc-fr/reference/image/functions/imagepolygon.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.20 $ -->
<!-- EN-Revision: 1.20 Maintainer: yannick Status: ready -->
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<refentry xml:id="function.imagepolygon" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>imagepolygon</refname>
  <refpurpose>Dessine un polygone</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>bool</type><methodname>imagepolygon</methodname>
   <methodparam><type>resource</type><parameter>image</parameter></methodparam>
   <methodparam><type>array</type><parameter>points</parameter></methodparam>
   <methodparam><type>int</type><parameter>num_points</parameter></methodparam>
   <methodparam><type>int</type><parameter>color</parameter></methodparam>
  </methodsynopsis>
  <para>
   <function>imagepolygon</function> dessine un polygone dans l'image
   <parameter>image</parameter>.
  </para>
 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    &gd.image.description;
    <varlistentry>
     <term><parameter>points</parameter></term>
     <listitem>
      <para>
       Un tableau contenant les sommets du polygone, e.g. :
       <informaltable>
        <tgroup cols="2">
         <tbody>
          <row>
           <entry>points[0]</entry>
           <entry>= x0</entry>
          </row>
          <row>
           <entry>points[1]</entry>
           <entry>= y0</entry>
          </row>
          <row>
           <entry>points[2]</entry>
           <entry>= x1</entry>
          </row>
          <row>
           <entry>points[3]</entry>
           <entry>= y1</entry>
          </row>
         </tbody>
        </tgroup>
       </informaltable>
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>num_points</parameter></term>
     <listitem>
      <para>
       Le nombre de points (sommets).
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>color</parameter></term>
     <listitem>
      <para>
       Un identifiant de couleur créé par la fonction
       <function>imagecolorallocate</function>.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

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

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>Exemple avec <function>imagepolygon</function></title>
    <programlisting role="php">
<![CDATA[
<?php
// Création d'une image vide
$image = imagecreatetruecolor(400, 300);

// Alloue une couleur pour le polygone
$col_poly = imagecolorallocate($image, 255, 255, 255);

// Dessine le polygone
imagepolygon($image, array(
        0,   0,
        100, 200,
        300, 200
    ),
    3,
    $col_poly);

// Affichage de l'image sur le navigateur
header('Content-type: image/png');

imagepng($image);
imagedestroy($image);
?>
]]>
    </programlisting>
    &example.outputs.similar;
    <mediaobject>
     <imageobject>
      <imagedata fileref="en/reference/image/figures/image.imagepolygon.png"/>
     </imageobject>
    </mediaobject>
   </example>
  </para>
 </refsect1>

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

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