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<?php
/**
* Line graph implementation for the Horde_Graph package.
*
* $Horde: framework/Graph/Graph/Plot/line.php,v 1.4.12.4 2006/01/01 21:28:18 jan Exp $
*
* Copyright 2002-2006 Chuck Hagenbuch <chuck@horde.org>
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @since Horde 3.0
* @package Horde_Graph
*/
class Horde_Graph_Plot_line {
var $_graph;
var $_color = 'blue';
var $_width = 1;
var $_dataset;
function Horde_Graph_Plot_line(&$graph, $params)
{
$this->_graph = &$graph;
foreach ($params as $param => $value) {
$key = '_' . $param;
$this->$key = $value;
}
}
function draw($minY = false)
{
$data = $this->_graph->_data['y'][$this->_dataset];
$count = count($data);
$verts = array();
for ($i = 0; $i < $count; $i++) {
$x = $i;
if ($minY !== false && $data[$i] < $minY) {
if (count($verts) == 1) {
$this->_graph->img->circle($verts[0]['x'], $verts[0]['y'], $this->_width, $this->_color, $this->_color);
}
else {
$this->_graph->img->polyline($verts, $this->_color, $this->_width);
}
$verts = array();
}
else {
$y = $data[$i];
$this->_graph->translate($x, $y);
$verts[] = array('x' => $x, 'y' => $y);
}
}
$this->_graph->img->polyline($verts, $this->_color, $this->_width);
}
}
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