114 lines
4.2 KiB
PHP
114 lines
4.2 KiB
PHP
<?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: Cross.php,v 1.7 2005/08/03 21:21:55 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 a cross.
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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_Cross extends Image_Graph_Marker
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{
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/**
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* The thickness of the plus in pixels (thickness is actually double this)
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* @var int
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* @access private
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*/
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var $_thickness = 2;
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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 the canvas
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* @param int $y The Y (vertical) position (in pixels) of the marker on the 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, $values = false)
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{
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if ($this->_thickness > 0) {
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$this->_getLineStyle();
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$this->_getFillStyle();
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$d1 = round(0.7071067 * $this->_size); // cos/sin(45 de>)
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$d2 = round(0.7071067 * $this->_thickness); // cos/sin(45 deg)
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$this->_canvas->addVertex(array('x' => $x - $d1 - $d2, 'y' => $y - $d1 + $d2));
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$this->_canvas->addVertex(array('x' => $x - $d1 + $d2, 'y' => $y - $d1 - $d2));
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$this->_canvas->addVertex(array('x' => $x, 'y' => $y - 2 * $d2));
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$this->_canvas->addVertex(array('x' => $x + $d1 - $d2, 'y' => $y - $d1 - $d2));
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$this->_canvas->addVertex(array('x' => $x + $d1 + $d2, 'y' => $y - $d1 + $d2));
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$this->_canvas->addVertex(array('x' => $x + 2 * $d2, 'y' => $y));
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$this->_canvas->addVertex(array('x' => $x + $d1 + $d2, 'y' => $y + $d1 - $d2));
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$this->_canvas->addVertex(array('x' => $x + $d1 - $d2, 'y' => $y + $d1 + $d2));
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$this->_canvas->addVertex(array('x' => $x, 'y' => $y + 2 * $d2));
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$this->_canvas->addVertex(array('x' => $x - $d1 + $d2, 'y' => $y + $d1 + $d2));
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$this->_canvas->addVertex(array('x' => $x - $d1 - $d2, 'y' => $y + $d1 - $d2));
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$this->_canvas->addVertex(array('x' => $x - 2 * $d2, 'y' => $y));
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$this->_canvas->polygon(array('connect' => true));
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} else {
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$this->_getLineStyle();
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$this->_canvas->line(
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array(
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'x0' => $x - $this->_size,
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'y0' => $y - $this->_size,
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'x1' => $x + $this->_size,
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'y1' => $y + $this->_size
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)
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);
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$this->_getLineStyle();
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$this->_canvas->line(
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array(
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'x0' => $x + $this->_size,
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'y0' => $y - $this->_size,
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'x1' => $x - $this->_size,
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'y1' => $y + $this->_size
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)
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);
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}
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parent::_drawMarker($x, $y, $values);
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}
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}
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?>
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