public static function getTileCoordinates($xTile, $yTile, $zoom, $lat, $lon)
{
$bb = BoundingBox::tile2boundingBox($xTile, $yTile, $zoom);
$minlat = $bb->south;
$minlon = $bb->west;
$maxlat = $bb->north;
$maxlon = $bb->east;
$deltalat = $maxlat - $minlat;
$deltalon = $maxlon - $minlon;
$x = ($lat - $minlat) / $deltalat * 256;
$y = 256 - ($lon - $minlon) / $deltalon * 256;
return array($x, $y);
}
/**
* @param \DarkLuk42\BoundingBox $bb area to check for cropping
* @param \DarkLuk42\Color $color color to be cropped
* @param bool $cropTransparent if colors with alpha on invisible should be cropped too
*
* @return \DarkLuk42\BoundingBox area to be cropped
*/
public function cropRightByColor(BoundingBox $bb, Color $color, $cropTransparent = true)
{
$binaryColor = $color->toBinary();
// right to left
for ($x = $bb->getRight(); $x >= $bb->getLeft(); $x--) {
for ($y = $bb->getTop(); $y <= $bb->getBottom(); $y++) {
if ($binaryColor != $this->colorAt($x, $y) && (!$cropTransparent || $this->colorAt($x, $y) >> 24 < 127)) {
break 2;
}
}
$bb->setWidthByRight($x);
}
return $bb;
}
public function scaleAs(BoundingBox $from, BoundingBox $to)
{
$this->scaleWidth($to->getWidth() / $from->getWidth());
$this->addLeft(($to->getLeft() - $from->getLeft()) / $to->getWidth() * $this->getWidth());
$this->scaleHeight($to->getHeight() / $from->getHeight());
$this->addTop(($to->getTop() - $from->getTop()) / $to->getHeight() * $this->getHeight());
}
/**
* Deprectated method which has been used for
* debug purposes in the past.
*/
public static function debugtile($lat, $lon, $zoom)
{
$img = Map::getMapTile($lat, $lon, $zoom);
$red = imagecolorallocate($img, 255, 0, 0);
list($xTile, $yTile) = Map::getTileNumbers($lat, $lon, $zoom);
list($x, $y) = BoundingBox::getTileCoordinates($xTile, $yTile, $zoom, $lat, $lon);
$x = floor($x);
$y = floor($y);
imagerectangle($img, $x - 5, $y - 5, $x + 5, $y + 5, $red);
header("Content-Type: image/png");
imagepng($img);
}
