function getSideDays(timePeriod) {

    let daysOnSides;

    if (timePeriod < _1_HOUR_IN_MILISECONDS) {
        daysOnSides = 1;
    }

    if (timePeriod === _1_HOUR_IN_MILISECONDS) {
        daysOnSides = 9;
    }

    if (timePeriod === _2_HOURS_IN_MILISECONDS) {
        daysOnSides = 10;
    }

    if (timePeriod === _3_HOURS_IN_MILISECONDS) {
        daysOnSides = 12;
    }

    if (timePeriod === _4_HOURS_IN_MILISECONDS) {
        daysOnSides = 20;
    }

    if (timePeriod === _6_HOURS_IN_MILISECONDS) {
        daysOnSides = 35;
    }

    if (timePeriod === _8_HOURS_IN_MILISECONDS) {
        daysOnSides = 44;
    }

    if (timePeriod === _12_HOURS_IN_MILISECONDS) {
        daysOnSides = 56;
    }

    if (timePeriod === ONE_DAY_IN_MILISECONDS) {
        daysOnSides = 154;
    }

    return daysOnSides;
}


function getCondenseFactor(timePeriod) {

    switch (timePeriod) {
        case _1_MINUTE_IN_MILISECONDS: return 1;
        case _5_MINUTES_IN_MILISECONDS: return 5;
        case _10_MINUTES_IN_MILISECONDS: return 10;
        case _30_MINUTES_IN_MILISECONDS: return 50;
        case _1_HOUR_IN_MILISECONDS: return 100;
    }
}


function getTransparenceFactor(timePeriod) {

    switch (timePeriod) {
        case _1_MINUTE_IN_MILISECONDS: return "0.12";
        case _5_MINUTES_IN_MILISECONDS: return "0.10";
        case _10_MINUTES_IN_MILISECONDS: return "0.08";
        case _30_MINUTES_IN_MILISECONDS: return "0.06";
        case _1_HOUR_IN_MILISECONDS: return "0.04";
    }
}


function recalculatePeriod(zoomLevel) {

    //console.log(" recalculatePeriod > " + zoomLevel);

    if (zoomLevel > 200) {
        return _1_MINUTE_IN_MILISECONDS;
    }

    if (zoomLevel > 120) {
        return _2_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > 80) {
        return _3_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > 60) {
        return _4_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > 15) {
        return _5_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 7) {
        return _10_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 10) {
        return _15_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 13) {
        return _20_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 15) {
        return _30_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 16) {
        return _40_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 17) {
        return _45_MINUTES_IN_MILISECONDS;
    }

    if (zoomLevel > - 18) {
        return _1_HOUR_IN_MILISECONDS;
    }

    if (zoomLevel > - 24) {
        return _2_HOURS_IN_MILISECONDS;
    }

    if (zoomLevel > - 25) {
        return _3_HOURS_IN_MILISECONDS;
    }

    if (zoomLevel > - 27) {
        return _4_HOURS_IN_MILISECONDS;
    }

    if (zoomLevel > - 27.5) {
        return _6_HOURS_IN_MILISECONDS;
    }

    if (zoomLevel > - 27.75) {
        return _8_HOURS_IN_MILISECONDS;
    }

    if (zoomLevel > - 28) {
        return _12_HOURS_IN_MILISECONDS;
    }

    if (zoomLevel <= - 28) {
        return ONE_DAY_IN_MILISECONDS;
    }
}