[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   4  
   5  /**
   6   * Image_Graph - PEAR PHP OO Graph Rendering Utility.
   7   *
   8   * PHP versions 4 and 5
   9   *
  10   * LICENSE: This library is free software; you can redistribute it and/or modify
  11   * it under the terms of the GNU Lesser General Public License as published by
  12   * the Free Software Foundation; either version 2.1 of the License, or (at your
  13   * option) any later version. This library is distributed in the hope that it
  14   * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
  16   * General Public License for more details. You should have received a copy of
  17   * the GNU Lesser General Public License along with this library; if not, write
  18   * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19   * 02111-1307 USA
  20   *
  21   * @category   Images
  22   * @package    Image_Graph
  23   * @subpackage Marker
  24   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  25   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  26   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  27   * @version    CVS: $Id: Radial.php,v 1.5 2005/08/24 20:36:03 nosey Exp $
  28   * @link       http://pear.php.net/package/Image_Graph
  29   */
  30  
  31  /**
  32   * Include file Image/Graph/Marker/Pointing.php
  33   */
  34  require_once  'Image/Graph/Marker/Pointing.php';
  35  
  36  /**
  37   * A pointing marker in a random angle from the data
  38   *
  39   * @category   Images
  40   * @package    Image_Graph
  41   * @subpackage Marker
  42   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  43   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  44   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  45   * @version    Release: 0.7.2
  46   * @link       http://pear.php.net/package/Image_Graph
  47   */
  48  class Image_Graph_Marker_Pointing_Radial extends Image_Graph_Marker_Pointing
  49  {
  50  
  51      /**
  52       * The radius of the radial marker
  53       * @var int
  54       * @access private
  55       */
  56      var $_radius;
  57  
  58      /**
  59       * Create an radial pointing marker, ie a marker on a defined distance from
  60       * the data
  61       * @param int $radius The 'length' of the pointer
  62       * @param Marker $markerEnd The ending marker that represents 'the head of
  63       * the pin'
  64       */
  65      function Image_Graph_Marker_Pointing_Radial($radius, & $markerEnd)
  66      {
  67          parent::Image_Graph_Marker_Pointing(0, 0, $markerEnd);
  68          $this->_radius = $radius;
  69      }
  70  
  71      /**
  72       * Draw the marker on the canvas
  73       * @param int $x The X (horizontal) position (in pixels) of the marker on
  74       * the canvas
  75       * @param int $y The Y (vertical) position (in pixels) of the marker on the
  76       * canvas
  77       * @param array $values The values representing the data the marker 'points'
  78       * to
  79       * @access private
  80       */
  81      function _drawMarker($x, $y, $values = false)
  82      {
  83          $angle = pi() * rand(0, 360) / 180;
  84          $this->_deltaX = $this->_radius * cos($angle);
  85          $this->_deltaY = $this->_radius * sin($angle);
  86          parent::_drawMarker($x, $y, $values);
  87      }
  88  
  89  }
  90  
  91  ?>