diff options
Diffstat (limited to 'config/dspam/pear/Image/Graph/Plot/Smoothed/Line.php')
| -rw-r--r-- | config/dspam/pear/Image/Graph/Plot/Smoothed/Line.php | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/config/dspam/pear/Image/Graph/Plot/Smoothed/Line.php b/config/dspam/pear/Image/Graph/Plot/Smoothed/Line.php new file mode 100644 index 00000000..00692839 --- /dev/null +++ b/config/dspam/pear/Image/Graph/Plot/Smoothed/Line.php @@ -0,0 +1,172 @@ +<?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 Plot + * @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/Plot/Smoothed/Bezier.php + */ +require_once 'Image/Graph/Plot/Smoothed/Bezier.php'; + +/** + * Bezier smoothed line chart. + * + * Similar to a {@link Image_Graph_Plot_Line}, but the interconnecting lines + * between two datapoints are smoothed using a Bezier curve, which enables the + * chart to appear as a nice curved plot instead of the sharp edges of a + * conventional {@link Image_Graph_Plot_Line}. Smoothed charts are only supported + * with non-stacked types + * + * @category Images + * @package Image_Graph + * @subpackage Plot + * @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_Plot_Smoothed_Line extends Image_Graph_Plot_Smoothed_Bezier +{ + + /** + * Gets the fill style of the element + * + * @return int A GD filestyle representing the fill style + * @see Image_Graph_Fill + * @access private + */ + function _getFillStyle($ID = false) + { + return IMG_COLOR_TRANSPARENT; + } + + /** + * Perform the actual drawing on the legend. + * + * @param int $x0 The top-left x-coordinate + * @param int $y0 The top-left y-coordinate + * @param int $x1 The bottom-right x-coordinate + * @param int $y1 The bottom-right y-coordinate + * @access private + */ + function _drawLegendSample($x0, $y0, $x1, $y1) + { + $this->_addSamplePoints($x0, $y0, $x1, $y1); + $this->_canvas->polygon(array('connect' => false)); + } + + /** + * Output the Bezier smoothed plot as an Line Chart + * + * @return bool Was the output 'good' (true) or 'bad' (false). + * @access private + */ + function _done() + { + if (parent::_done() === false) { + return false; + } + + $this->_canvas->startGroup(get_class($this) . '_' . $this->_title); + $this->_clip(true); + $keys = array_keys($this->_dataset); + foreach ($keys as $key) { + $dataset =& $this->_dataset[$key]; + $dataset->_reset(); + $numPoints = 0; + while ($p1 = $dataset->_next()) { + if ($p1['Y'] === null) { + if ($numPoints > 1) { + $this->_getLineStyle($key); + $this->_canvas->polygon(array('connect' => false, 'map_vertices' => true)); + } + else { + $this->_canvas->reset(); + } + $numPoints = 0; + } else { + $p0 = $dataset->_nearby(-2); + $p2 = $dataset->_nearby(0); + $p3 = $dataset->_nearby(1); + + if (($p0) && ($p0['Y'] === null)) { + $p0 = false; + } + if (($p2) && ($p2['Y'] === null)) { + $p2 = false; + } + if (($p3) && ($p3['Y'] === null)) { + $p3 = false; + } + + if ($p2) { + $cp = $this->_getControlPoints($p1, $p0, $p2, $p3); + $this->_canvas->addSpline( + $this->_mergeData( + $p1, + array( + 'x' => $cp['X'], + 'y' => $cp['Y'], + 'p1x' => $cp['P1X'], + 'p1y' => $cp['P1Y'], + 'p2x' => $cp['P2X'], + 'p2y' => $cp['P2Y'] + ) + ) + ); + } else { + $x = $this->_pointX($p1); + $y = $this->_pointY($p1); + $this->_canvas->addVertex( + $this->_mergeData( + $p1, + array('x' => $x, 'y' => $y) + ) + ); + } + $numPoints++; + } + } + if ($numPoints > 1) { + $this->_getLineStyle(); + $this->_canvas->polygon(array('connect' => false, 'map_vertices' => true)); + } + else { + $this->_canvas->reset(); + } + } + unset($keys); + $this->_drawMarker(); + $this->_clip(false); + $this->_canvas->endGroup(); + return true; + } + +} +?>
\ No newline at end of file |