96 lines
3.0 KiB
PHP
96 lines
3.0 KiB
PHP
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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Image_Graph - PEAR PHP OO Graph Rendering Utility.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version. This library is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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* General Public License for more details. You should have received a copy of
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* the GNU Lesser General Public License along with this library; if not, write
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* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Marker
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Circle.php,v 1.6 2005/08/03 21:21:54 nosey Exp $
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* @link http://pear.php.net/package/Image_Graph
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*/
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/**
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* Include file Image/Graph/Marker.php
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*/
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require_once 'Image/Graph/Marker.php';
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/**
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* Data marker as circle (require GD2)
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Marker
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Image_Graph
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*/
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class Image_Graph_Marker_Circle extends Image_Graph_Marker
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{
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/**
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* The 'size' of the marker, the meaning depends on the specific Marker
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* implementation
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* @var int
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* @access private
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*/
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var $_size = 10;
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/**
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* Draw the marker on the canvas
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*
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* @param int $x The X (horizontal) position (in pixels) of the marker on
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* the canvas
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* @param int $y The Y (vertical) position (in pixels) of the marker on the
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* canvas
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* @param array $values The values representing the data the marker 'points' to
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* @access private
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*/
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function _drawMarker($x, $y, $values = false)
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{
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$this->_getFillStyle();
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$this->_getLineStyle();
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$dA = 2*pi()/($this->_size*2);
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$angle = 0;
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while ($angle < 2*pi()) {
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$this->_canvas->addVertex(array('x' =>
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$x + $this->_size*cos($angle), 'y' =>
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$y - $this->_size*sin($angle)
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));
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$angle += $dA;
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}
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$this->_canvas->addVertex(array('x' =>
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$x + $this->_size*cos(0), 'y' =>
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$y - $this->_size*sin(0)
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));
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$this->_canvas->polygon(array('connect' => true));
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parent::_drawMarker($x, $y, $values);
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}
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}
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?>
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