243 lines
7.3 KiB
PHP
243 lines
7.3 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 Plotarea
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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: Radar.php,v 1.7 2005/08/24 20:36:02 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/Plotarea.php
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*/
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require_once 'Image/Graph/Plotarea.php';
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/**
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* Plot area used for radar plots.
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Plotarea
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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_Plotarea_Radar extends Image_Graph_Plotarea
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{
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/**
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* Create the plotarea, implicitely creates 2 normal axis
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*/
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function Image_Graph_Plotarea_Radar()
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{
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parent::Image_Graph_Element();
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$this->_padding = 10;
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$this->_axisX =& Image_Graph::factory('Image_Graph_Axis_Radar');
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$this->_axisX->_setParent($this);
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$this->_axisY =& Image_Graph::factory('Image_Graph_Axis', IMAGE_GRAPH_AXIS_Y);
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$this->_axisY->_setParent($this);
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$this->_axisY->_setMinimum(0);
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}
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/**
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* Get the width of the 'real' plotarea
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*
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* @return int The width of the 'real' plotarea, ie not including space occupied by padding and axis
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* @access private
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*/
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function _plotWidth()
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{
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return (min($this->height(), $this->width())) * 0.80;
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}
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/**
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* Get the height of the 'real' plotarea
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*
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* @return int The height of the 'real' plotarea, ie not including space occupied by padding and axis
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* @access private
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*/
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function _plotHeight()
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{
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return (min($this->height(), $this->width())) * 0.80;
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}
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/**
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* Left boundary of the background fill area
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*
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* @return int Leftmost position on the canvas
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* @access private
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*/
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function _fillLeft()
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{
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return (int) (($this->_left + $this->_right - $this->_plotWidth()) / 2);
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}
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/**
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* Top boundary of the background fill area
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*
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* @return int Topmost position on the canvas
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* @access private
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*/
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function _fillTop()
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{
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return (int) (($this->_top + $this->_bottom - $this->_plotHeight()) / 2);
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}
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/**
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* Right boundary of the background fill area
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*
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* @return int Rightmost position on the canvas
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* @access private
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*/
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function _fillRight()
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{
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return (int) (($this->_left + $this->_right + $this->_plotWidth()) / 2);
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}
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/**
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* Bottom boundary of the background fill area
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*
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* @return int Bottommost position on the canvas
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* @access private
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*/
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function _fillBottom()
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{
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return (int) (($this->_top + $this->_bottom + $this->_plotHeight()) / 2);
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}
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/**
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* Get the X pixel position represented by a value
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*
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* @param double $value The value to get the pixel-point for
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* @return double The pixel position along the axis
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* @access private
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*/
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function _pointX($value)
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{
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if (is_array($value)) {
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if ($value['Y'] == '#min#') {
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$radius = 0;
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} elseif (($value['Y'] == '#max#') || ($value['Y'] === false)) {
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$radius = 1;
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} else {
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$radius = ($value['Y'] - $this->_axisY->_getMinimum()) /
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($this->_axisY->_getMaximum() - $this->_axisY->_getMinimum());
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}
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$x = ($this->_left + $this->_right) / 2 -
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$radius * ($this->_plotWidth() / 2) *
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cos(deg2rad($this->_axisX->_point($value['X'])));
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}
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return max($this->_plotLeft, min($this->_plotRight, $x));
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}
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/**
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* Get the Y pixel position represented by a value
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*
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* @param double $value The value to get the pixel-point for
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* @return double The pixel position along the axis
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* @access private
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*/
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function _pointY($value)
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{
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if (is_array($value)) {
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if ($value['Y'] == '#min#') {
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$radius = 0;
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} elseif (($value['Y'] == '#max#') || ($value['Y'] === false)) {
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$radius = 1;
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} else {
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$radius = ($value['Y'] - $this->_axisY->_getMinimum()) /
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($this->_axisY->_getMaximum() - $this->_axisY->_getMinimum());
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}
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$y = ($this->_top + $this->_bottom) / 2 -
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$radius * ($this->_plotHeight() / 2) *
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sin(deg2rad($this->_axisX->_point($value['X'])));
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}
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return max($this->_plotTop, min($this->_plotBottom, $y));
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}
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/**
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* Update coordinates
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*
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* @access private
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*/
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function _updateCoords()
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{
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if (is_array($this->_elements)) {
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$keys = array_keys($this->_elements);
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foreach ($keys as $key) {
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$element =& $this->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$this->_setExtrema($element);
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}
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}
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unset($keys);
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}
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$this->_calcEdges();
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$centerX = (int) (($this->_left + $this->_right) / 2);
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$centerY = (int) (($this->_top + $this->_bottom) / 2);
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$radius = min($this->_plotHeight(), $this->_plotWidth()) / 2;
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if (is_object($this->_axisX)) {
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$this->_axisX->_setCoords(
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$centerX - $radius,
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$centerY - $radius,
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$centerX + $radius,
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$centerY + $radius
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);
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}
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if (is_object($this->_axisY)) {
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$this->_axisY->_setCoords(
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$centerX,
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$centerY,
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$centerX - $radius,
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$centerY - $radius
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);
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}
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$this->_plotLeft = $this->_fillLeft();
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$this->_plotTop = $this->_fillTop();
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$this->_plotRight = $this->_fillRight();
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$this->_plotBottom = $this->_fillBottom();
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Image_Graph_Element::_updateCoords();
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if (is_object($this->_axisX)) {
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$this->_axisX->_updateCoords();
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}
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if (is_object($this->_axisY)) {
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$this->_axisY->_updateCoords();
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}
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}
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}
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?>
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