/**
* Return file name through a promise.
*
* @param integer $xAxis X coordinate.
* @param integer $yAxis Y coordinate.
*
* @return \React\Promise\Promise
*/
public function getTile($xAxis, $yAxis)
{
$fileName = str_replace(['{x}', '{y}'], [$xAxis, $yAxis], $this->location);
$deferred = new Deferred();
$this->loader->imageExists($fileName)->then(function () use($deferred, $fileName) {
$deferred->resolve($fileName);
}, function () use($deferred, $fileName) {
if (empty($this->fallbackImage)) {
return $deferred->resolve($fileName);
}
$deferred->resolve($this->fallbackImage);
});
return $deferred->promise();
}
/**
* Draw a blip on the image.
*
* @param Blip $blip Blip to draw on the map.
*
* @return void
*/
protected function drawBlip(Blip $blip)
{
$this->loader->addImage($blip->getImage())->then(function ($image) use($blip) {
$this->drawImage($image, $blip->calculatePosition($this->centerPoint, $this->size, $this->zoom));
});
}