code: public static double toleranceDistance(int zoom, int pixelWidth,
  			int pixelHeight) {
  		return toleranceDistance(zoom, Math.max(pixelWidth, pixelHeight));
  	}
docs: Get the tolerance distance in meters for the zoom level and pixels length
  
  @param zoom
  zoom level
  @param pixelWidth
  pixel width
  @param pixelHeight
  pixel height
  
  @return tolerance distance in meters
  @since 2.0.0