php-doc-en/reference/ming/swfgradient/construct.xml

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<refentry xml:id="function.swfgradient.construct" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>SWFGradient->__construct</refname>
  <refpurpose>Creates a gradient object</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <classsynopsis>
   <ooclass><classname>SWFGradient</classname></ooclass>
   <methodsynopsis>
    <type>SWFGradient</type><methodname>__construct</methodname>
    <void/>
   </methodsynopsis>
  </classsynopsis>
  &warn.experimental.func;
  <para>
   <function>swfgradient</function> creates a new SWFGradient object.
  </para>
  <simpara>
   After you've added the entries to your gradient, you can use the gradient 
   in a shape fill with the <function>swfshape->addfill</function> method. 
  </simpara>
  <simpara>
   SWFGradient has the following methods : <function>swfgradient->addentry</function>.
  </simpara>
  <para>
   This simple example will draw a big black-to-white gradient as background,
   and a reddish disc in its center.
   <example>
    <title><function>swfgradient</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php

  $m = new SWFMovie();
  $m->setDimension(320, 240);

  $s = new SWFShape();

  // first gradient- black to white
  $g = new SWFGradient();
  $g->addEntry(0.0, 0, 0, 0);
  $g->addEntry(1.0, 0xff, 0xff, 0xff);

  $f = $s->addFill($g, SWFFILL_LINEAR_GRADIENT);
  $f->scaleTo(0.01);
  $f->moveTo(160, 120);
  $s->setRightFill($f);
  $s->drawLine(320, 0);
  $s->drawLine(0, 240);
  $s->drawLine(-320, 0);
  $s->drawLine(0, -240);

  $m->add($s);

  $s = new SWFShape();

  // second gradient- radial gradient from red to transparent
  $g = new SWFGradient();
  $g->addEntry(0.0, 0xff, 0, 0, 0xff);
  $g->addEntry(1.0, 0xff, 0, 0, 0);

  $f = $s->addFill($g, SWFFILL_RADIAL_GRADIENT);
  $f->scaleTo(0.005);
  $f->moveTo(160, 120);
  $s->setRightFill($f);
  $s->drawLine(320, 0);
  $s->drawLine(0, 240);
  $s->drawLine(-320, 0);
  $s->drawLine(0, -240);

  $m->add($s);

  header('Content-type: application/x-shockwave-flash');
  $m->output();
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>
</refentry>

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