Skip to content

Instantly share code, notes, and snippets.

@aisk

aisk/gist:3735854

Created September 17, 2012 06:37
Show Gist options
  • Save aisk/3735854 to your computer and use it in GitHub Desktop.
Save aisk/3735854 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. aisk revised this gist Sep 17, 2012. 1 changed file with 16 additions and 2 deletions.
    18 changes: 16 additions & 2 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -111,5 +111,19 @@ convertor = function(point, mc) {

    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]
    LLBAND = [75, 60, 45, 30, 15, 0]
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
    LL2MC = [[ - 0.0015702102444, 111320.7020616939, 1704480524535203, -10338987376042340, 26112667856603880, -35149669176653700, 26595700718403920, -10725012454188240, 1800819912950474, 82.5], [0.0008277824516172526, 111320.7020463578, 647795574.6671607, -4082003173.641316, 10774905663.51142, -15171875531.51559, 12053065338.62167, -5124939663.577472, 913311935.9512032, 67.5], [0.00337398766765, 111320.7020202162, 4481351.045890365, -23393751.19931662, 79682215.47186455, -115964993.2797253, 97236711.15602145, -43661946.33752821, 8477230.501135234, 52.5], [0.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5], [ - 0.0003441963504368392, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5], [ - 0.0003218135878613132, 111320.7020701615, 0.00369383431289, 823725.6402795718, 0.46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, 0.37238884252424, 7.45]]
    MC2LL = [
    [1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2],
    [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86],
    [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37],
    [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06],
    [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4],
    [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]
    ]
    LL2MC = [
    [ - 0.0015702102444, 111320.7020616939, 1704480524535203, -10338987376042340, 26112667856603880, -35149669176653700, 26595700718403920, -10725012454188240, 1800819912950474, 82.5],
    [0.0008277824516172526, 111320.7020463578, 647795574.6671607, -4082003173.641316, 10774905663.51142, -15171875531.51559, 12053065338.62167, -5124939663.577472, 913311935.9512032, 67.5],
    [0.00337398766765, 111320.7020202162, 4481351.045890365, -23393751.19931662, 79682215.47186455, -115964993.2797253, 97236711.15602145, -43661946.33752821, 8477230.501135234, 52.5],
    [0.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5],
    [ - 0.0003441963504368392, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5],
    [ - 0.0003218135878613132, 111320.7020701615, 0.00369383431289, 823725.6402795718, 0.46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, 0.37238884252424, 7.45]
    ]
  2. aisk revised this gist Sep 17, 2012. 1 changed file with 7 additions and 7 deletions.
    14 changes: 7 additions & 7 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -70,20 +70,20 @@ lngLatToMercator = function(point) {
    }
    var cE = convertor(point, mc);
    var lng_lat = {
    lnt: cE.lng.toFixed(2),
    lng: cE.lng.toFixed(2),
    lat: cE.lat.toFixed(2)
    };
    return lng_lat
    }

    getLoop = function(lnt, a, b) {
    while (lnt > b) {
    lnt -= b - a
    getLoop = function(lng, a, b) {
    while (lng > b) {
    lng -= b - a
    }
    while (lnt < a) {
    lnt += b - a
    while (lng < a) {
    lng += b - a
    }
    return lnt
    return lng
    }

    getRange = function(lat, a, b) {
  3. aisk revised this gist Sep 17, 2012. 1 changed file with 20 additions and 7 deletions.
    27 changes: 20 additions & 7 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -15,7 +15,7 @@ pointToPixel = function(point, zoom, mCenter, bounds) {
    if (!point) {
    return
    }
    point = this.lngLatToMercator(point);
    point = lngLatToMercator(point);
    var units = getZoomUnits(zoom);
    var x = Math.round((point.lng - mCenter.lng) / units + bounds.width / 2);
    var y = Math.round((mCenter.lat - point.lat) / units + bounds.height / 2);
    @@ -32,13 +32,13 @@ mercatorToLngLat = function(mLngLat) {
    lng: Math.abs(mLngLat.lng),
    lat: Math.abs(mLngLat.lat)
    };
    for (var i = 0; i < this.MCBAND.length; i++) {
    if (absLngLat.lat >= this.MCBAND[i]) {
    for (var i = 0; i < MCBAND.length; i++) {
    if (absLngLat.lat >= MCBAND[i]) {
    mc = MC2LL[i];
    break
    }
    }
    var lngLat = this.convertor(mLngLat, mc);
    var lngLat = convertor(mLngLat, mc);
    var lngLat = {
    lng: lngLat.lng.toFixed(6),
    lat: lngLat.lat.toFixed(6)
    @@ -49,7 +49,7 @@ mercatorToLngLat = function(mLngLat) {
    lngLatToMercator = function(point) {
    var lng_lat, mc;
    point.lng = getLoop(point.lng, -180, 180);
    point.lat = this.getRange(point.lat, -74, 74);
    point.lat = getRange(point.lat, -74, 74);
    lng_lat = {
    lng: point.lng,
    lat: point.lat
    @@ -68,7 +68,7 @@ lngLatToMercator = function(point) {
    }
    }
    }
    var cE = this.convertor(point, mc);
    var cE = convertor(point, mc);
    var lng_lat = {
    lnt: cE.lng.toFixed(2),
    lat: cE.lat.toFixed(2)
    @@ -77,7 +77,7 @@ lngLatToMercator = function(point) {
    }

    getLoop = function(lnt, a, b) {
    while (lnt > T) {
    while (lnt > b) {
    lnt -= b - a
    }
    while (lnt < a) {
    @@ -96,6 +96,19 @@ getRange = function(lat, a, b) {
    return lat
    }

    convertor = function(point, mc) {
    if (!point || !mc) {
    return
    }
    var lng = mc[0] + mc[1] * Math.abs(point.lng);
    var c = Math.abs(point.lat) / mc[9];
    var lat = mc[2] + mc[3] * c + mc[4] * c * c + mc[5] * c * c * c + mc[6] * c * c * c * c + mc[7] * c * c * c * c * c + mc[8] * c * c * c * c * c * c;
    lng *= (point.lng < 0 ? -1 : 1);
    lat *= (point.lat < 0 ? -1 : 1);
    return {lng: lng, lat: lat}
    }


    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]
    LLBAND = [75, 60, 45, 30, 15, 0]
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
  4. aisk revised this gist Sep 17, 2012. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -46,7 +46,7 @@ mercatorToLngLat = function(mLngLat) {
    return lngLat
    }

    convertLL2MC = function(point) {
    lngLatToMercator = function(point) {
    var lng_lat, mc;
    point.lng = getLoop(point.lng, -180, 180);
    point.lat = this.getRange(point.lat, -74, 74);
    @@ -86,7 +86,7 @@ getLoop = function(lnt, a, b) {
    return lnt
    }

    getRange: function(lat, a, b) {
    getRange = function(lat, a, b) {
    if (a != null) {
    lat = Math.max(lat, a)
    }
  5. aisk revised this gist Sep 17, 2012. 1 changed file with 26 additions and 7 deletions.
    33 changes: 26 additions & 7 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -34,7 +34,7 @@ mercatorToLngLat = function(mLngLat) {
    };
    for (var i = 0; i < this.MCBAND.length; i++) {
    if (absLngLat.lat >= this.MCBAND[i]) {
    mc = this.MC2LL[i];
    mc = MC2LL[i];
    break
    }
    }
    @@ -48,22 +48,22 @@ mercatorToLngLat = function(mLngLat) {

    convertLL2MC = function(point) {
    var lng_lat, mc;
    point.lng = this.getLoop(point.lng, -180, 180);
    point.lng = getLoop(point.lng, -180, 180);
    point.lat = this.getRange(point.lat, -74, 74);
    lng_lat = {
    lng: point.lng,
    lat: point.lat
    };
    for (var i = 0; i < LLBAND.length; i++) {
    if (lng_lat.lat >= this.LLBAND[i]) {
    mc = this.LL2MC[i];
    if (lng_lat.lat >= LLBAND[i]) {
    mc = LL2MC[i];
    break
    }
    }
    if (!mc) {
    for (var i = LLBAND.length - 1; i >= 0; i--) {
    if (lng_lat.lat <= -this.LLBAND[i]) {
    mc = this.LL2MC[i];
    if (lng_lat.lat <= -LLBAND[i]) {
    mc = LL2MC[i];
    break
    }
    }
    @@ -76,8 +76,27 @@ convertLL2MC = function(point) {
    return lng_lat
    }

    getLoop = function(lnt, a, b) {
    while (lnt > T) {
    lnt -= b - a
    }
    while (lnt < a) {
    lnt += b - a
    }
    return lnt
    }

    getRange: function(lat, a, b) {
    if (a != null) {
    lat = Math.max(lat, a)
    }
    if (b != null) {
    lat = Math.min(lat, b)
    }
    return lat
    }

    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]
    LLBAND = [75, 60, 45, 30, 15, 0]
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
    LL2MC = [[ - 0.0015702102444, 111320.7020616939, 1704480524535203, -10338987376042340, 26112667856603880, -35149669176653700, 26595700718403920, -10725012454188240, 1800819912950474, 82.5], [0.0008277824516172526, 111320.7020463578, 647795574.6671607, -4082003173.641316, 10774905663.51142, -15171875531.51559, 12053065338.62167, -5124939663.577472, 913311935.9512032, 67.5], [0.00337398766765, 111320.7020202162, 4481351.045890365, -23393751.19931662, 79682215.47186455, -115964993.2797253, 97236711.15602145, -43661946.33752821, 8477230.501135234, 52.5], [0.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5], [ - 0.0003441963504368392, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5], [ - 0.0003218135878613132, 111320.7020701615, 0.00369383431289, 823725.6402795718, 0.46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, 0.37238884252424, 7.45]]
    LL2MC = [[ - 0.0015702102444, 111320.7020616939, 1704480524535203, -10338987376042340, 26112667856603880, -35149669176653700, 26595700718403920, -10725012454188240, 1800819912950474, 82.5], [0.0008277824516172526, 111320.7020463578, 647795574.6671607, -4082003173.641316, 10774905663.51142, -15171875531.51559, 12053065338.62167, -5124939663.577472, 913311935.9512032, 67.5], [0.00337398766765, 111320.7020202162, 4481351.045890365, -23393751.19931662, 79682215.47186455, -115964993.2797253, 97236711.15602145, -43661946.33752821, 8477230.501135234, 52.5], [0.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5], [ - 0.0003441963504368392, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5], [ - 0.0003218135878613132, 111320.7020701615, 0.00369383431289, 823725.6402795718, 0.46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, 0.37238884252424, 7.45]]
  6. aisk revised this gist Sep 17, 2012. 1 changed file with 34 additions and 2 deletions.
    36 changes: 34 additions & 2 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -46,6 +46,38 @@ mercatorToLngLat = function(mLngLat) {
    return lngLat
    }

    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
    convertLL2MC = function(point) {
    var lng_lat, mc;
    point.lng = this.getLoop(point.lng, -180, 180);
    point.lat = this.getRange(point.lat, -74, 74);
    lng_lat = {
    lng: point.lng,
    lat: point.lat
    };
    for (var i = 0; i < LLBAND.length; i++) {
    if (lng_lat.lat >= this.LLBAND[i]) {
    mc = this.LL2MC[i];
    break
    }
    }
    if (!mc) {
    for (var i = LLBAND.length - 1; i >= 0; i--) {
    if (lng_lat.lat <= -this.LLBAND[i]) {
    mc = this.LL2MC[i];
    break
    }
    }
    }
    var cE = this.convertor(point, mc);
    var lng_lat = {
    lnt: cE.lng.toFixed(2),
    lat: cE.lat.toFixed(2)
    };
    return lng_lat
    }

    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]

    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]
    LLBAND = [75, 60, 45, 30, 15, 0]
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
    LL2MC = [[ - 0.0015702102444, 111320.7020616939, 1704480524535203, -10338987376042340, 26112667856603880, -35149669176653700, 26595700718403920, -10725012454188240, 1800819912950474, 82.5], [0.0008277824516172526, 111320.7020463578, 647795574.6671607, -4082003173.641316, 10774905663.51142, -15171875531.51559, 12053065338.62167, -5124939663.577472, 913311935.9512032, 67.5], [0.00337398766765, 111320.7020202162, 4481351.045890365, -23393751.19931662, 79682215.47186455, -115964993.2797253, 97236711.15602145, -43661946.33752821, 8477230.501135234, 52.5], [0.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5], [ - 0.0003441963504368392, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5], [ - 0.0003218135878613132, 111320.7020701615, 0.00369383431289, 823725.6402795718, 0.46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, 0.37238884252424, 7.45]]
  7. aisk revised this gist Sep 17, 2012. 1 changed file with 17 additions and 0 deletions.
    17 changes: 17 additions & 0 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,4 +1,5 @@
    pixelToPoint = function(point, zoom, center, bounds) {
    // 像素到坐标
    if (!point) {
    return
    }
    @@ -8,9 +9,23 @@ pixelToPoint = function(point, zoom, center, bounds) {
    var mercatorLngLat = {lng: mercatorLng, lat: mercatorLat};
    return mercatorToLngLat(mercatorLngLat)
    }

    pointToPixel = function(point, zoom, mCenter, bounds) {
    // 坐标到像素
    if (!point) {
    return
    }
    point = this.lngLatToMercator(point);
    var units = getZoomUnits(zoom);
    var x = Math.round((point.lng - mCenter.lng) / units + bounds.width / 2);
    var y = Math.round((mCenter.lat - point.lat) / units + bounds.height / 2);
    return {x: x, y: y}
    }

    getZoomUnits = function(zoom) {
    return Math.pow(2, (18 - zoom))
    }

    mercatorToLngLat = function(mLngLat) {
    var absLngLat, mc;
    absLngLat = {
    @@ -30,5 +45,7 @@ mercatorToLngLat = function(mLngLat) {
    };
    return lngLat
    }

    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]

    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]
  8. aisk revised this gist Sep 17, 2012. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,17 +1,17 @@
    pixelToPoint = function(point, zoom, center, bounds, city) {
    pixelToPoint = function(point, zoom, center, bounds) {
    if (!point) {
    return
    }
    var zoomUnits = getZoomUnits(zoom);
    var mercatorLng = center.lng + zoomUnits * (point.x - bounds.width / 2);
    var mercatorLat = center.lat - zoomUnits * (point.y - bounds.height / 2);
    var mercatorLngLat = {lng: mercatorLng, lat: mercatorLat};
    return mercatorToLngLat(mercatorLngLat, city)
    return mercatorToLngLat(mercatorLngLat)
    }
    getZoomUnits = function(zoom) {
    return Math.pow(2, (18 - zoom))
    }
    convertMC2LL = function(mLngLat) {
    mercatorToLngLat = function(mLngLat) {
    var absLngLat, mc;
    absLngLat = {
    lng: Math.abs(mLngLat.lng),
  9. aisk revised this gist Sep 17, 2012. 1 changed file with 2 additions and 1 deletion.
    3 changes: 2 additions & 1 deletion gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -30,4 +30,5 @@ convertMC2LL = function(mLngLat) {
    };
    return lngLat
    }
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
    MCBAND = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0]
  10. aisk revised this gist Sep 17, 2012. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -1,4 +1,4 @@
    pixelToPoint: function(point, zoom, center, bounds, city) {
    pixelToPoint = function(point, zoom, center, bounds, city) {
    if (!point) {
    return
    }
    @@ -8,7 +8,7 @@ pixelToPoint: function(point, zoom, center, bounds, city) {
    var mercatorLngLat = {lng: mercatorLng, lat: mercatorLat};
    return mercatorToLngLat(mercatorLngLat, city)
    }
    getZoomUnits: function(zoom) {
    getZoomUnits = function(zoom) {
    return Math.pow(2, (18 - zoom))
    }
    convertMC2LL = function(mLngLat) {
  11. aisk revised this gist Sep 17, 2012. 1 changed file with 21 additions and 1 deletion.
    22 changes: 21 additions & 1 deletion gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -10,4 +10,24 @@ pixelToPoint: function(point, zoom, center, bounds, city) {
    }
    getZoomUnits: function(zoom) {
    return Math.pow(2, (18 - zoom))
    }
    }
    convertMC2LL = function(mLngLat) {
    var absLngLat, mc;
    absLngLat = {
    lng: Math.abs(mLngLat.lng),
    lat: Math.abs(mLngLat.lat)
    };
    for (var i = 0; i < this.MCBAND.length; i++) {
    if (absLngLat.lat >= this.MCBAND[i]) {
    mc = this.MC2LL[i];
    break
    }
    }
    var lngLat = this.convertor(mLngLat, mc);
    var lngLat = {
    lng: lngLat.lng.toFixed(6),
    lat: lngLat.lat.toFixed(6)
    };
    return lngLat
    }
    MC2LL = [[1.410526172116255e-8, 0.00000898305509648872, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -0.03801003308653, 17337981.2], [ - 7.435856389565537e-9, 0.000008983055097726239, -0.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [ - 3.030883460898826e-8, 0.00000898305509983578, 0.30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, 0.32710905363475, 6856817.37], [ - 1.981981304930552e-8, 0.000008983055099779535, 0.03278182852591, 40.31678527705744, 0.65659298677277, -4.44255534477492, 0.85341911805263, 0.12923347998204, -0.04625736007561, 4482777.06], [3.09191371068437e-9, 0.000008983055096812155, 0.00006995724062, 23.10934304144901, -0.00023663490511, -0.6321817810242, -0.00663494467273, 0.03430082397953, -0.00466043876332, 2555164.4], [2.890871144776878e-9, 0.000008983055095805407, -3.068298e-8, 7.47137025468032, -0.00000353937994, -0.02145144861037, -0.00001234426596, 0.00010322952773, -0.00000323890364, 826088.5]]
  12. aisk revised this gist Sep 17, 2012. 1 changed file with 3 additions and 0 deletions.
    3 changes: 3 additions & 0 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -7,4 +7,7 @@ pixelToPoint: function(point, zoom, center, bounds, city) {
    var mercatorLat = center.lat - zoomUnits * (point.y - bounds.height / 2);
    var mercatorLngLat = {lng: mercatorLng, lat: mercatorLat};
    return mercatorToLngLat(mercatorLngLat, city)
    }
    getZoomUnits: function(zoom) {
    return Math.pow(2, (18 - zoom))
    }
  13. aisk created this gist Sep 17, 2012.
    10 changes: 10 additions & 0 deletions gistfile1.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,10 @@
    pixelToPoint: function(point, zoom, center, bounds, city) {
    if (!point) {
    return
    }
    var zoomUnits = getZoomUnits(zoom);
    var mercatorLng = center.lng + zoomUnits * (point.x - bounds.width / 2);
    var mercatorLat = center.lat - zoomUnits * (point.y - bounds.height / 2);
    var mercatorLngLat = {lng: mercatorLng, lat: mercatorLat};
    return mercatorToLngLat(mercatorLngLat, city)
    }