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Diffstat (limited to 'config/dspam/pear/Image/Graph/Marker/Pointing/Angular.php')
| -rw-r--r-- | config/dspam/pear/Image/Graph/Marker/Pointing/Angular.php | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/config/dspam/pear/Image/Graph/Marker/Pointing/Angular.php b/config/dspam/pear/Image/Graph/Marker/Pointing/Angular.php new file mode 100644 index 00000000..93b8b7cf --- /dev/null +++ b/config/dspam/pear/Image/Graph/Marker/Pointing/Angular.php @@ -0,0 +1,105 @@ +<?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: $Id$ + * @link http://pear.php.net/package/Image_Graph + */ + +/** + * Include file Image/Graph/Marker/Pointing.php + */ +require_once 'Image/Graph/Marker/Pointing.php'; + +/** + * Marker that points 'away' from the graph. + * + * Use this as a marker for displaying another marker pointing to the original + * point on the graph - where the 'pointer' is calculated as line orthogonal to + * a line drawn between the points neighbours to both sides (an approximate + * tangent). This should make an the pointer appear to point 'straight' out from + * the graph. The 'head' of the pointer is then another marker of any choice. + * + * @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_Pointing_Angular extends Image_Graph_Marker_Pointing +{ + + /** + * The length of the angular marker + * @var int + * @access private + */ + var $_radius; + + /** + * Image_Graph_AngularPointingMarker [Constructor] + * @param int $radius The 'length' of the pointer + * @param Marker $markerEnd The ending marker that represents 'the head of + * the pin' + */ + function Image_Graph_Marker_Pointing_Angular($radius, & $markerEnd) + { + parent::Image_Graph_Marker_Pointing(0, 0, $markerEnd); + $this->_radius = $radius; + } + + /** + * 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, $values = false) + { + if ((isset($values['LENGTH'])) && ($values['LENGTH'] != 0)) { + $this->_deltaX = - $values['AX'] * $this->_radius / $values['LENGTH']; + $this->_deltaY = - $values['AY'] * $this->_radius / $values['LENGTH']; + } + + if ((isset($values['NPY'])) && (isset($values['APY'])) && + (isset($values['PPY'])) && ($values['NPY'] > $values['APY']) && + ($values['PPY'] > $values['APY'])) + { + $this->_deltaX = - $this->_deltaX; + $this->_deltaY = - $this->_deltaY; + } + parent::_drawMarker($x, $y, $values); + } + +} + +?>
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