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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* @package phpMyAdmin
*/
/**
*
*/
require_once 'pma_pchart_multi.php';
/**
* implements multi radar chart
* @package phpMyAdmin
*/
class PMA_pChart_multi_radar extends PMA_pChart_multi
{
public function __construct($data, $options = null)
{
parent::__construct($data, $options);
$this->normalizeValues();
}
/**
* Get the largest value from the data and normalize all the other values.
*/
private function normalizeValues()
{
$maxValue = 0;
$keys = array_keys($this->data);
$valueKey = $keys[1];
// get the max value
foreach ($this->data[$valueKey] as $values) {
if (max($values) > $maxValue) {
$maxValue = max($values);
}
}
// normalize all the values according to the max value
foreach ($this->data[$valueKey] as &$values) {
foreach ($values as &$value) {
$value = $value / $maxValue * 10;
}
}
}
/**
* graph area for the radar chart does not include grid lines
*/
protected function drawGraphArea()
{
$this->chart->drawGraphArea(
$this->getGraphAreaColor(RED),
$this->getGraphAreaColor(GREEN),
$this->getGraphAreaColor(BLUE),
FALSE
);
if($this->settings['gradientIntensity']>0)
$this->chart->drawGraphAreaGradient(
$this->getGraphAreaGradientColor(RED),
$this->getGraphAreaGradientColor(GREEN),
$this->getGraphAreaGradientColor(BLUE),
$this->settings['gradientIntensity']
);
else
$this->chart->drawGraphArea(
$this->getGraphAreaGradientColor(RED),
$this->getGraphAreaGradientColor(GREEN),
$this->getGraphAreaGradientColor(BLUE)
);
}
/**
* draw multi radar chart
*/
protected function drawChart()
{
parent::drawChart();
// when drawing radar graph we can specify the border from the top of
// graph area. We want border to be dynamic, so that either the top
// or the side of the radar is some distance away from the top or the
// side of the graph area.
$areaWidth = $this->chart->GArea_X2 - $this->chart->GArea_X1;
$areaHeight = $this->chart->GArea_Y2 - $this->chart->GArea_Y1;
if ($areaHeight > $areaWidth) {
$borderOffset = ($areaHeight - $areaWidth) / 2;
}
else {
$borderOffset = 0;
}
// the least ammount that radar is away from the graph area side.
$borderOffset += 40;
// Draw the radar chart
$this->chart->drawRadarAxis($this->dataSet->GetData(), $this->dataSet->GetDataDescription(), TRUE, $borderOffset,
120, 120, 120, 230, 230, 230, -1, 2);
$this->chart->drawFilledRadar($this->dataSet->GetData(), $this->dataSet->GetDataDescription(), 50, $borderOffset);
}
}
?>
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