<?php /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ /** * Image_Graph - PEAR PHP OO Graph Rendering Utility. * * 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_Graph * @subpackage Marker * @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: Cross.php,v 1.7 2005/08/03 21:21:55 nosey Exp $ * @link http://pear.php.net/package/Image_Graph */ /** * Include file Image/Graph/Marker.php */ require_once 'Image/Graph/Marker.php'; /** * Data marker as a cross. * * @category Images * @package Image_Graph * @subpackage Marker * @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 Release: @package_version@ * @link http://pear.php.net/package/Image_Graph */ class Image_Graph_Marker_Cross extends Image_Graph_Marker { /** * The thickness of the plus in pixels (thickness is actually double this) * @var int * @access private */ var $_thickness = 2; /** * Draw the marker on the canvas * * @param int $x The X (horizontal) position (in pixels) of the marker on the canvas * @param int $y The Y (vertical) position (in pixels) of the marker on the canvas * @param array $values The values representing the data the marker 'points' to * @access private */ function _drawMarker($x, $y, $values = false) { if ($this->_thickness > 0) { $this->_getLineStyle(); $this->_getFillStyle(); $d1 = round(0.7071067 * $this->_size); // cos/sin(45 de>) $d2 = round(0.7071067 * $this->_thickness); // cos/sin(45 deg) $this->_canvas->addVertex(array('x' => $x - $d1 - $d2, 'y' => $y - $d1 + $d2)); $this->_canvas->addVertex(array('x' => $x - $d1 + $d2, 'y' => $y - $d1 - $d2)); $this->_canvas->addVertex(array('x' => $x, 'y' => $y - 2 * $d2)); $this->_canvas->addVertex(array('x' => $x + $d1 - $d2, 'y' => $y - $d1 - $d2)); $this->_canvas->addVertex(array('x' => $x + $d1 + $d2, 'y' => $y - $d1 + $d2)); $this->_canvas->addVertex(array('x' => $x + 2 * $d2, 'y' => $y)); $this->_canvas->addVertex(array('x' => $x + $d1 + $d2, 'y' => $y + $d1 - $d2)); $this->_canvas->addVertex(array('x' => $x + $d1 - $d2, 'y' => $y + $d1 + $d2)); $this->_canvas->addVertex(array('x' => $x, 'y' => $y + 2 * $d2)); $this->_canvas->addVertex(array('x' => $x - $d1 + $d2, 'y' => $y + $d1 + $d2)); $this->_canvas->addVertex(array('x' => $x - $d1 - $d2, 'y' => $y + $d1 - $d2)); $this->_canvas->addVertex(array('x' => $x - 2 * $d2, 'y' => $y)); $this->_canvas->polygon(array('connect' => true)); } else { $this->_getLineStyle(); $this->_canvas->line( array( 'x0' => $x - $this->_size, 'y0' => $y - $this->_size, 'x1' => $x + $this->_size, 'y1' => $y + $this->_size ) ); $this->_getLineStyle(); $this->_canvas->line( array( 'x0' => $x + $this->_size, 'y0' => $y - $this->_size, 'x1' => $x - $this->_size, 'y1' => $y + $this->_size ) ); } parent::_drawMarker($x, $y, $values); } } ?>