calculate
fun calculateMercatorCoordinateShift(startPoint: Point, endPoint: Point, zoomLevel: Double): MercatorCoordinate
Calculate the shift between two Points in Mercator coordinate.
Return
A MercatorCoordinate represent the shift between startPoint and endPoint.
Parameters
start
the start point for the calculation.
end
the end point for the calculation.
zoom
the zoom level that apply the calculation.