/**
* Finds a path for the connection and draws it
* @param zibo\library\image\Image $image The image to draw upon
* @param zibo\library\diagram\Diagram $diagram The diagram we're drawing
* @param zibo\library\diagram\DiagramConnection $connection The connection to draw
* @return boolean True if the connection has been drawn, false otherwise
*/
private function drawConnection(Image $image, Diagram $diagram, DiagramConnection $connection)
{
try {
$connection->preDraw($diagram);
$begin = $connection->getBegin();
$end = $connection->getEnd();
$beginPoint = $this->getDiagramObjectPoint($begin, $diagram);
$endPoint = $this->getDiagramObjectPoint($end, $diagram);
$path = false;
foreach ($this->pathFinders as $pathFinder) {
$pathFinder->setDiagram($diagram);
$path = $pathFinder->findPath($beginPoint, $endPoint);
if ($path) {
break;
}
}
if (!$path) {
Zibo::getInstance()->runEvent(Zibo::EVENT_LOG, 'Could not find a path for the connection ' . $connection->getId(), $begin . ' -> ' . $end, 1);
return false;
}
$points = $this->getImagePoints($path, $diagram);
$connection->setPoints($points);
$connection->draw($image);
} catch (DiagramException $e) {
Zibo::getInstance()->runEvent(Zibo::EVENT_LOG, 'Exception: ' . $e->getMessage(), $e->getTraceAsString(), 1);
return false;
}
return true;
}
/**
* Adds a connection between 2 diagram objects
* @param DiagramConnection $connection
* @return null
*/
public function addDiagramConnection(DiagramConnection $connection)
{
$this->connections[$connection->getId()] = $connection;
}