getUrl method
Implementation
String getUrl(TileCoordinates coords, int tileSize, bool retinaMode) {
final tileSizePoint = Point(tileSize, tileSize);
final nwPoint = coords.scaleBy(tileSizePoint);
final sePoint = nwPoint + tileSizePoint;
final nwCoords = crs.pointToLatLng(nwPoint, coords.z.toDouble());
final seCoords = crs.pointToLatLng(sePoint, coords.z.toDouble());
final nw = crs.projection.project(nwCoords);
final se = crs.projection.project(seCoords);
final bounds = Bounds(nw, se);
final bbox = (_versionNumber >= 1.3 && crs is Epsg4326)
? [bounds.min.y, bounds.min.x, bounds.max.y, bounds.max.x]
: [bounds.min.x, bounds.min.y, bounds.max.x, bounds.max.y];
final buffer = StringBuffer(_encodedBaseUrl);
buffer.write('&width=${retinaMode ? tileSize * 2 : tileSize}');
buffer.write('&height=${retinaMode ? tileSize * 2 : tileSize}');
buffer.write('&bbox=${bbox.join(',')}');
return buffer.toString();
}