Yet another example from Mehdi Achour

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@227606 c90b9560-bf6c-de11-be94-00142212c4b1

reference/image/functions/imagesetpixel.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
 <refentry id="function.imagesetpixel">
  <refnamediv>
   <refname>imagesetpixel</refname>
@@ -58,6 +58,49 @@
    &return.success;
   </para>
  </refsect1>
+ <refsect1 role="examples">
+  &reftitle.examples;
+  <para>
+   <example>
+    <title><function>imagesetpixel</function> example</title>
+    <para>
+     A random drawing that ends with a regular picture.
+    </para>
+    <programlisting role="php">
+<![CDATA[
+<?php
+
+$x = 200;
+$y = 200;
+
+$gd = imagecreatetruecolor($x, $y);
+ 
+$corners[0] = array('x' => 100, 'y' =>  10);
+$corners[1] = array('x' =>   0, 'y' => 190);
+$corners[2] = array('x' => 200, 'y' => 190);
+
+$red = imagecolorallocate($gd, 255, 0, 0); 
+
+for ($i = 0; $i < 100000; $i++) {
+  imagesetpixel($gd, round($x),round($y), $red);
+  $a = rand(0, 2);
+  $x = ($x + $corners[$a]['x']) / 2;
+  $y = ($y + $corners[$a]['y']) / 2;
+}
+ 
+header('Content-Type: image/png');
+imagepng($gd);
+
+?>
+]]>
+    </programlisting>
+    &example.outputs.similar;
+    <screenshot>
+     <graphic fileref="figures/image.imagesetpixel.png" />
+    </screenshot>
+   </example>
+  </para>
+ </refsect1>
  <refsect1 role="seealso">
   &reftitle.seealso;
   <para>