Function resolutionToScale

src/leaflet/core/Util.js:131–138

(resolution, dpi, mapUnit)

 * ```
 */
export var resolutionToScale = function(resolution, dpi, mapUnit) {
    var inchPerMeter = 1 / 0.0254;
    // 地球半径。
    var meterPerMapUnit = getMeterPerMapUnit(mapUnit);
    var scale = resolution * dpi * inchPerMeter * meterPerMapUnit;
    scale = 1 / scale;
    return scale;
};

export var scaleToResolution = transformScaleToResolution;