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khosb/includes/pear/Image/tests/gradients.php

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* This is a visual test case, testing canvas support for gradient fillings.
*
* PHP versions 4 and 5
*
* LICENSE: This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version. This library is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details. You should have received a copy of
* the GNU Lesser General Public License along with this library; if not, write
* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* @category Images
* @package Image_Canvas
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: gradients.php,v 1.2 2005/08/03 21:17:48 nosey Exp $
* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=212
*/
require_once 'Image/Canvas.php';
$canvas =& Image_Canvas::factory(
'png',
array('width' => 605, 'height' => 350)
);
$gradient = array(
'type' => 'gradient',
'start' => 'yellow',
'end' => 'maroon'
);
$directions = array('horizontal', 'vertical', 'horizontal_mirror', 'vertical_mirror', 'diagonal_tl_br', 'diagonal_bl_tr', 'radial');
$space = 10;
$size = 75;
$canvas->setLineColor('black');
$canvas->rectangle(array('x0' => 0, 'y0' => 0, 'x1' => $canvas->getWidth() - 1, 'y1' => $canvas->getHeight() - 1));
$i = 0;
foreach ($directions as $direction) {
$gradient['direction'] = $direction;
$x = $space + ($i * ($size + $space));
$y = $space;
$canvas->setGradientFill($gradient);
$canvas->rectangle(array('x0' => $x, 'y0' => $y, 'x1' => $x + $size, 'y1' => $y + $size));
$y += $size + $space;
$canvas->setGradientFill($gradient);
$canvas->ellipse(array('x' => $x + $size / 2, 'y' => $y + $size / 2, 'rx' => $size / 2, 'ry' => $size / 2));
$y += $size + $space;
$canvas->setGradientFill($gradient);
$canvas->pieslice(array('x' => $x + $size / 2, 'y' => $y + $size / 2, 'rx' => $size / 2, 'ry' => $size / 2, 'v1' => 45, 'v2' => 270));
$y += $size + $space;
$points = array();
$points[] = array('x' => $x + $size / 3, 'y' => $y);
$points[] = array('x' => $x + $size, 'y' => $y + $size / 2);
$points[] = array('x' => $x + $size / 3, 'y' => $y + 3 * $size / 4);
$points[] = array('x' => $x + $size / 5, 'y' => $y + $size);
$points[] = array('x' => $x, 'y' => $y + $size / 3);
$y += $size + $space;
$canvas->setGradientFill($gradient);
foreach ($points as $point) {
$canvas->addVertex($point);
}
$canvas->polygon(array('connect' => true));
$i++;
}
$canvas->show();
?>