!function(e){if("object"==typeof exports)module.exports=e();else if("function"==typeof define&&define.amd)define(e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.proj4=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o 1) { x = (x > 1) ? 1 : -1; } return Math.asin(x); }; },{}],7:[function(_dereq_,module,exports){ module.exports = function(x) { return (1 - 0.25 * x * (1 + x / 16 * (3 + 1.25 * x))); }; },{}],8:[function(_dereq_,module,exports){ module.exports = function(x) { return (0.375 * x * (1 + 0.25 * x * (1 + 0.46875 * x))); }; },{}],9:[function(_dereq_,module,exports){ module.exports = function(x) { return (0.05859375 * x * x * (1 + 0.75 * x)); }; },{}],10:[function(_dereq_,module,exports){ module.exports = function(x) { return (x * x * x * (35 / 3072)); }; },{}],11:[function(_dereq_,module,exports){ module.exports = function(a, e, sinphi) { var temp = e * sinphi; return a / Math.sqrt(1 - temp * temp); }; },{}],12:[function(_dereq_,module,exports){ module.exports = function(ml, e0, e1, e2, e3) { var phi; var dphi; phi = ml / e0; for (var i = 0; i < 15; i++) { dphi = (ml - (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi))) / (e0 - 2 * e1 * Math.cos(2 * phi) + 4 * e2 * Math.cos(4 * phi) - 6 * e3 * Math.cos(6 * phi)); phi += dphi; if (Math.abs(dphi) <= 0.0000000001) { return phi; } } //..reportError("IMLFN-CONV:Latitude failed to converge after 15 iterations"); return NaN; }; },{}],13:[function(_dereq_,module,exports){ var HALF_PI = Math.PI/2; module.exports = function(eccent, q) { var temp = 1 - (1 - eccent * eccent) / (2 * eccent) * Math.log((1 - eccent) / (1 + eccent)); if (Math.abs(Math.abs(q) - temp) < 1.0E-6) { if (q < 0) { return (-1 * HALF_PI); } else { return HALF_PI; } } //var phi = 0.5* q/(1-eccent*eccent); var phi = Math.asin(0.5 * q); var dphi; var sin_phi; var cos_phi; var con; for (var i = 0; i < 30; i++) { sin_phi = Math.sin(phi); cos_phi = Math.cos(phi); con = eccent * sin_phi; dphi = Math.pow(1 - con * con, 2) / (2 * cos_phi) * (q / (1 - eccent * eccent) - sin_phi / (1 - con * con) + 0.5 / eccent * Math.log((1 - con) / (1 + con))); phi += dphi; if (Math.abs(dphi) <= 0.0000000001) { return phi; } } //console.log("IQSFN-CONV:Latitude failed to converge after 30 iterations"); return NaN; }; },{}],14:[function(_dereq_,module,exports){ module.exports = function(e0, e1, e2, e3, phi) { return (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi)); }; },{}],15:[function(_dereq_,module,exports){ module.exports = function(eccent, sinphi, cosphi) { var con = eccent * sinphi; return cosphi / (Math.sqrt(1 - con * con)); }; },{}],16:[function(_dereq_,module,exports){ var HALF_PI = Math.PI/2; module.exports = function(eccent, ts) { var eccnth = 0.5 * eccent; var con, dphi; var phi = HALF_PI - 2 * Math.atan(ts); for (var i = 0; i <= 15; i++) { con = eccent * Math.sin(phi); dphi = HALF_PI - 2 * Math.atan(ts * (Math.pow(((1 - con) / (1 + con)), eccnth))) - phi; phi += dphi; if (Math.abs(dphi) <= 0.0000000001) { return phi; } } //console.log("phi2z has NoConvergence"); return -9999; }; },{}],17:[function(_dereq_,module,exports){ var C00 = 1; var C02 = 0.25; var C04 = 0.046875; var C06 = 0.01953125; var C08 = 0.01068115234375; var C22 = 0.75; var C44 = 0.46875; var C46 = 0.01302083333333333333; var C48 = 0.00712076822916666666; var C66 = 0.36458333333333333333; var C68 = 0.00569661458333333333; var C88 = 0.3076171875; module.exports = function(es) { var en = []; en[0] = C00 - es * (C02 + es * (C04 + es * (C06 + es * C08))); en[1] = es * (C22 - es * (C04 + es * (C06 + es * C08))); var t = es * es; en[2] = t * (C44 - es * (C46 + es * C48)); t *= es; en[3] = t * (C66 - es * C68); en[4] = t * es * C88; return en; }; },{}],18:[function(_dereq_,module,exports){ var pj_mlfn = _dereq_("./pj_mlfn"); var EPSLN = 1.0e-10; var MAX_ITER = 20; module.exports = function(arg, es, en) { var k = 1 / (1 - es); var phi = arg; for (var i = MAX_ITER; i; --i) { /* rarely goes over 2 iterations */ var s = Math.sin(phi); var t = 1 - es * s * s; //t = this.pj_mlfn(phi, s, Math.cos(phi), en) - arg; //phi -= t * (t * Math.sqrt(t)) * k; t = (pj_mlfn(phi, s, Math.cos(phi), en) - arg) * (t * Math.sqrt(t)) * k; phi -= t; if (Math.abs(t) < EPSLN) { return phi; } } //..reportError("cass:pj_inv_mlfn: Convergence error"); return phi; }; },{"./pj_mlfn":19}],19:[function(_dereq_,module,exports){ module.exports = function(phi, sphi, cphi, en) { cphi *= sphi; sphi *= sphi; return (en[0] * phi - cphi * (en[1] + sphi * (en[2] + sphi * (en[3] + sphi * en[4])))); }; },{}],20:[function(_dereq_,module,exports){ module.exports = function(eccent, sinphi) { var con; if (eccent > 1.0e-7) { con = eccent * sinphi; return ((1 - eccent * eccent) * (sinphi / (1 - con * con) - (0.5 / eccent) * Math.log((1 - con) / (1 + con)))); } else { return (2 * sinphi); } }; },{}],21:[function(_dereq_,module,exports){ module.exports = function(x) { return x<0 ? -1 : 1; }; },{}],22:[function(_dereq_,module,exports){ module.exports = function(esinp, exp) { return (Math.pow((1 - esinp) / (1 + esinp), exp)); }; },{}],23:[function(_dereq_,module,exports){ module.exports = function (array){ var out = { x: array[0], y: array[1] }; if (array.length>2) { out.z = array[2]; } if (array.length>3) { out.m = array[3]; } return out; }; },{}],24:[function(_dereq_,module,exports){ var HALF_PI = Math.PI/2; module.exports = function(eccent, phi, sinphi) { var con = eccent * sinphi; var com = 0.5 * eccent; con = Math.pow(((1 - con) / (1 + con)), com); return (Math.tan(0.5 * (HALF_PI - phi)) / con); }; },{}],25:[function(_dereq_,module,exports){ exports.wgs84 = { towgs84: "0,0,0", ellipse: "WGS84", datumName: "WGS84" }; exports.ch1903 = { towgs84: "674.374,15.056,405.346", ellipse: "bessel", datumName: "swiss" }; exports.ggrs87 = { towgs84: "-199.87,74.79,246.62", ellipse: "GRS80", datumName: "Greek_Geodetic_Reference_System_1987" }; exports.nad83 = { towgs84: "0,0,0", ellipse: "GRS80", datumName: "North_American_Datum_1983" }; exports.nad27 = { nadgrids: "@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat", ellipse: "clrk66", datumName: "North_American_Datum_1927" }; exports.potsdam = { towgs84: "606.0,23.0,413.0", ellipse: "bessel", datumName: "Potsdam Rauenberg 1950 DHDN" }; exports.carthage = { towgs84: "-263.0,6.0,431.0", ellipse: "clark80", datumName: "Carthage 1934 Tunisia" }; exports.hermannskogel = { towgs84: "653.0,-212.0,449.0", ellipse: "bessel", datumName: "Hermannskogel" }; exports.ire65 = { towgs84: "482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15", ellipse: "mod_airy", datumName: "Ireland 1965" }; exports.rassadiran = { towgs84: "-133.63,-157.5,-158.62", ellipse: "intl", datumName: "Rassadiran" }; exports.nzgd49 = { towgs84: "59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993", ellipse: "intl", datumName: "New Zealand Geodetic Datum 1949" }; exports.osgb36 = { towgs84: "446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894", ellipse: "airy", datumName: "Airy 1830" }; exports.s_jtsk = { towgs84: "589,76,480", ellipse: 'bessel', datumName: 'S-JTSK (Ferro)' }; exports.beduaram = { towgs84: '-106,-87,188', ellipse: 'clrk80', datumName: 'Beduaram' }; exports.gunung_segara = { towgs84: '-403,684,41', ellipse: 'bessel', datumName: 'Gunung Segara Jakarta' }; exports.rnb72 = { towgs84: "106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1", ellipse: "intl", datumName: "Reseau National Belge 1972" }; },{}],26:[function(_dereq_,module,exports){ exports.MERIT = { a: 6378137.0, rf: 298.257, ellipseName: "MERIT 1983" }; exports.SGS85 = { a: 6378136.0, rf: 298.257, ellipseName: "Soviet Geodetic System 85" }; exports.GRS80 = { a: 6378137.0, rf: 298.257222101, ellipseName: "GRS 1980(IUGG, 1980)" }; exports.IAU76 = { a: 6378140.0, rf: 298.257, ellipseName: "IAU 1976" }; exports.airy = { a: 6377563.396, b: 6356256.910, ellipseName: "Airy 1830" }; exports.APL4 = { a: 6378137, rf: 298.25, ellipseName: "Appl. Physics. 1965" }; exports.NWL9D = { a: 6378145.0, rf: 298.25, ellipseName: "Naval Weapons Lab., 1965" }; exports.mod_airy = { a: 6377340.189, b: 6356034.446, ellipseName: "Modified Airy" }; exports.andrae = { a: 6377104.43, rf: 300.0, ellipseName: "Andrae 1876 (Den., Iclnd.)" }; exports.aust_SA = { a: 6378160.0, rf: 298.25, ellipseName: "Australian Natl & S. Amer. 1969" }; exports.GRS67 = { a: 6378160.0, rf: 298.2471674270, ellipseName: "GRS 67(IUGG 1967)" }; exports.bessel = { a: 6377397.155, rf: 299.1528128, ellipseName: "Bessel 1841" }; exports.bess_nam = { a: 6377483.865, rf: 299.1528128, ellipseName: "Bessel 1841 (Namibia)" }; exports.clrk66 = { a: 6378206.4, b: 6356583.8, ellipseName: "Clarke 1866" }; exports.clrk80 = { a: 6378249.145, rf: 293.4663, ellipseName: "Clarke 1880 mod." }; exports.clrk58 = { a: 6378293.645208759, rf: 294.2606763692654, ellipseName: "Clarke 1858" }; exports.CPM = { a: 6375738.7, rf: 334.29, ellipseName: "Comm. des Poids et Mesures 1799" }; exports.delmbr = { a: 6376428.0, rf: 311.5, ellipseName: "Delambre 1810 (Belgium)" }; exports.engelis = { a: 6378136.05, rf: 298.2566, ellipseName: "Engelis 1985" }; exports.evrst30 = { a: 6377276.345, rf: 300.8017, ellipseName: "Everest 1830" }; exports.evrst48 = { a: 6377304.063, rf: 300.8017, ellipseName: "Everest 1948" }; exports.evrst56 = { a: 6377301.243, rf: 300.8017, ellipseName: "Everest 1956" }; exports.evrst69 = { a: 6377295.664, rf: 300.8017, ellipseName: "Everest 1969" }; exports.evrstSS = { a: 6377298.556, rf: 300.8017, ellipseName: "Everest (Sabah & Sarawak)" }; exports.fschr60 = { a: 6378166.0, rf: 298.3, ellipseName: "Fischer (Mercury Datum) 1960" }; exports.fschr60m = { a: 6378155.0, rf: 298.3, ellipseName: "Fischer 1960" }; exports.fschr68 = { a: 6378150.0, rf: 298.3, ellipseName: "Fischer 1968" }; exports.helmert = { a: 6378200.0, rf: 298.3, ellipseName: "Helmert 1906" }; exports.hough = { a: 6378270.0, rf: 297.0, ellipseName: "Hough" }; exports.intl = { a: 6378388.0, rf: 297.0, ellipseName: "International 1909 (Hayford)" }; exports.kaula = { a: 6378163.0, rf: 298.24, ellipseName: "Kaula 1961" }; exports.lerch = { a: 6378139.0, rf: 298.257, ellipseName: "Lerch 1979" }; exports.mprts = { a: 6397300.0, rf: 191.0, ellipseName: "Maupertius 1738" }; exports.new_intl = { a: 6378157.5, b: 6356772.2, ellipseName: "New International 1967" }; exports.plessis = { a: 6376523.0, rf: 6355863.0, ellipseName: "Plessis 1817 (France)" }; exports.krass = { a: 6378245.0, rf: 298.3, ellipseName: "Krassovsky, 1942" }; exports.SEasia = { a: 6378155.0, b: 6356773.3205, ellipseName: "Southeast Asia" }; exports.walbeck = { a: 6376896.0, b: 6355834.8467, ellipseName: "Walbeck" }; exports.WGS60 = { a: 6378165.0, rf: 298.3, ellipseName: "WGS 60" }; exports.WGS66 = { a: 6378145.0, rf: 298.25, ellipseName: "WGS 66" }; exports.WGS7 = { a: 6378135.0, rf: 298.26, ellipseName: "WGS 72" }; exports.WGS84 = { a: 6378137.0, rf: 298.257223563, ellipseName: "WGS 84" }; exports.sphere = { a: 6370997.0, b: 6370997.0, ellipseName: "Normal Sphere (r=6370997)" }; },{}],27:[function(_dereq_,module,exports){ exports.greenwich = 0.0; //"0dE", exports.lisbon = -9.131906111111; //"9d07'54.862\"W", exports.paris = 2.337229166667; //"2d20'14.025\"E", exports.bogota = -74.080916666667; //"74d04'51.3\"W", exports.madrid = -3.687938888889; //"3d41'16.58\"W", exports.rome = 12.452333333333; //"12d27'8.4\"E", exports.bern = 7.439583333333; //"7d26'22.5\"E", exports.jakarta = 106.807719444444; //"106d48'27.79\"E", exports.ferro = -17.666666666667; //"17d40'W", exports.brussels = 4.367975; //"4d22'4.71\"E", exports.stockholm = 18.058277777778; //"18d3'29.8\"E", exports.athens = 23.7163375; //"23d42'58.815\"E", exports.oslo = 10.722916666667; //"10d43'22.5\"E" },{}],28:[function(_dereq_,module,exports){ exports.ft = {to_meter: 0.3048}; exports['us-ft'] = {to_meter: 1200 / 3937}; },{}],29:[function(_dereq_,module,exports){ var proj = _dereq_('./Proj'); var transform = _dereq_('./transform'); var wgs84 = proj('WGS84'); function transformer(from, to, coords) { var transformedArray; if (Array.isArray(coords)) { transformedArray = transform(from, to, coords); if (coords.length === 3) { return [transformedArray.x, transformedArray.y, transformedArray.z]; } else { return [transformedArray.x, transformedArray.y]; } } else { return transform(from, to, coords); } } function checkProj(item) { if (item instanceof proj) { return item; } if (item.oProj) { return item.oProj; } return proj(item); } function proj4(fromProj, toProj, coord) { fromProj = checkProj(fromProj); var single = false; var obj; if (typeof toProj === 'undefined') { toProj = fromProj; fromProj = wgs84; single = true; } else if (typeof toProj.x !== 'undefined' || Array.isArray(toProj)) { coord = toProj; toProj = fromProj; fromProj = wgs84; single = true; } toProj = checkProj(toProj); if (coord) { return transformer(fromProj, toProj, coord); } else { obj = { forward: function(coords) { return transformer(fromProj, toProj, coords); }, inverse: function(coords) { return transformer(toProj, fromProj, coords); } }; if (single) { obj.oProj = toProj; } return obj; } } module.exports = proj4; },{"./Proj":2,"./transform":65}],30:[function(_dereq_,module,exports){ var HALF_PI = Math.PI/2; var PJD_3PARAM = 1; var PJD_7PARAM = 2; var PJD_GRIDSHIFT = 3; var PJD_WGS84 = 4; // WGS84 or equivalent var PJD_NODATUM = 5; // WGS84 or equivalent var SEC_TO_RAD = 4.84813681109535993589914102357e-6; var AD_C = 1.0026000; var COS_67P5 = 0.38268343236508977; var datum = function(proj) { if (!(this instanceof datum)) { return new datum(proj); } this.datum_type = PJD_WGS84; //default setting if (!proj) { return; } if (proj.datumCode && proj.datumCode === 'none') { this.datum_type = PJD_NODATUM; } if (proj.datum_params) { this.datum_params = proj.datum_params.map(parseFloat); if (this.datum_params[0] !== 0 || this.datum_params[1] !== 0 || this.datum_params[2] !== 0) { this.datum_type = PJD_3PARAM; } if (this.datum_params.length > 3) { if (this.datum_params[3] !== 0 || this.datum_params[4] !== 0 || this.datum_params[5] !== 0 || this.datum_params[6] !== 0) { this.datum_type = PJD_7PARAM; this.datum_params[3] *= SEC_TO_RAD; this.datum_params[4] *= SEC_TO_RAD; this.datum_params[5] *= SEC_TO_RAD; this.datum_params[6] = (this.datum_params[6] / 1000000.0) + 1.0; } } } // DGR 2011-03-21 : nadgrids support this.datum_type = proj.grids ? PJD_GRIDSHIFT : this.datum_type; this.a = proj.a; //datum object also uses these values this.b = proj.b; this.es = proj.es; this.ep2 = proj.ep2; if (this.datum_type === PJD_GRIDSHIFT) { this.grids = proj.grids; } }; datum.prototype = { /****************************************************************/ // cs_compare_datums() // Returns TRUE if the two datums match, otherwise FALSE. compare_datums: function(dest) { if (this.datum_type !== dest.datum_type) { return false; // false, datums are not equal } else if (this.a !== dest.a || Math.abs(this.es - dest.es) > 0.000000000050) { // the tolerence for es is to ensure that GRS80 and WGS84 // are considered identical return false; } else if (this.datum_type === PJD_3PARAM) { return (this.datum_params[0] === dest.datum_params[0] && this.datum_params[1] === dest.datum_params[1] && this.datum_params[2] === dest.datum_params[2]); } else if (this.datum_type === PJD_7PARAM) { return (this.datum_params[0] === dest.datum_params[0] && this.datum_params[1] === dest.datum_params[1] && this.datum_params[2] === dest.datum_params[2] && this.datum_params[3] === dest.datum_params[3] && this.datum_params[4] === dest.datum_params[4] && this.datum_params[5] === dest.datum_params[5] && this.datum_params[6] === dest.datum_params[6]); } else if (this.datum_type === PJD_GRIDSHIFT || dest.datum_type === PJD_GRIDSHIFT) { //alert("ERROR: Grid shift transformations are not implemented."); //return false //DGR 2012-07-29 lazy ... return this.nadgrids === dest.nadgrids; } else { return true; // datums are equal } }, // cs_compare_datums() /* * The function Convert_Geodetic_To_Geocentric converts geodetic coordinates * (latitude, longitude, and height) to geocentric coordinates (X, Y, Z), * according to the current ellipsoid parameters. * * Latitude : Geodetic latitude in radians (input) * Longitude : Geodetic longitude in radians (input) * Height : Geodetic height, in meters (input) * X : Calculated Geocentric X coordinate, in meters (output) * Y : Calculated Geocentric Y coordinate, in meters (output) * Z : Calculated Geocentric Z coordinate, in meters (output) * */ geodetic_to_geocentric: function(p) { var Longitude = p.x; var Latitude = p.y; var Height = p.z ? p.z : 0; //Z value not always supplied var X; // output var Y; var Z; var Error_Code = 0; // GEOCENT_NO_ERROR; var Rn; /* Earth radius at location */ var Sin_Lat; /* Math.sin(Latitude) */ var Sin2_Lat; /* Square of Math.sin(Latitude) */ var Cos_Lat; /* Math.cos(Latitude) */ /* ** Don't blow up if Latitude is just a little out of the value ** range as it may just be a rounding issue. Also removed longitude ** test, it should be wrapped by Math.cos() and Math.sin(). NFW for PROJ.4, Sep/2001. */ if (Latitude < -HALF_PI && Latitude > -1.001 * HALF_PI) { Latitude = -HALF_PI; } else if (Latitude > HALF_PI && Latitude < 1.001 * HALF_PI) { Latitude = HALF_PI; } else if ((Latitude < -HALF_PI) || (Latitude > HALF_PI)) { /* Latitude out of range */ //..reportError('geocent:lat out of range:' + Latitude); return null; } if (Longitude > Math.PI) { Longitude -= (2 * Math.PI); } Sin_Lat = Math.sin(Latitude); Cos_Lat = Math.cos(Latitude); Sin2_Lat = Sin_Lat * Sin_Lat; Rn = this.a / (Math.sqrt(1.0e0 - this.es * Sin2_Lat)); X = (Rn + Height) * Cos_Lat * Math.cos(Longitude); Y = (Rn + Height) * Cos_Lat * Math.sin(Longitude); Z = ((Rn * (1 - this.es)) + Height) * Sin_Lat; p.x = X; p.y = Y; p.z = Z; return Error_Code; }, // cs_geodetic_to_geocentric() geocentric_to_geodetic: function(p) { /* local defintions and variables */ /* end-criterium of loop, accuracy of sin(Latitude) */ var genau = 1e-12; var genau2 = (genau * genau); var maxiter = 30; var P; /* distance between semi-minor axis and location */ var RR; /* distance between center and location */ var CT; /* sin of geocentric latitude */ var ST; /* cos of geocentric latitude */ var RX; var RK; var RN; /* Earth radius at location */ var CPHI0; /* cos of start or old geodetic latitude in iterations */ var SPHI0; /* sin of start or old geodetic latitude in iterations */ var CPHI; /* cos of searched geodetic latitude */ var SPHI; /* sin of searched geodetic latitude */ var SDPHI; /* end-criterium: addition-theorem of sin(Latitude(iter)-Latitude(iter-1)) */ var At_Pole; /* indicates location is in polar region */ var iter; /* # of continous iteration, max. 30 is always enough (s.a.) */ var X = p.x; var Y = p.y; var Z = p.z ? p.z : 0.0; //Z value not always supplied var Longitude; var Latitude; var Height; At_Pole = false; P = Math.sqrt(X * X + Y * Y); RR = Math.sqrt(X * X + Y * Y + Z * Z); /* special cases for latitude and longitude */ if (P / this.a < genau) { /* special case, if P=0. (X=0., Y=0.) */ At_Pole = true; Longitude = 0.0; /* if (X,Y,Z)=(0.,0.,0.) then Height becomes semi-minor axis * of ellipsoid (=center of mass), Latitude becomes PI/2 */ if (RR / this.a < genau) { Latitude = HALF_PI; Height = -this.b; return; } } else { /* ellipsoidal (geodetic) longitude * interval: -PI < Longitude <= +PI */ Longitude = Math.atan2(Y, X); } /* -------------------------------------------------------------- * Following iterative algorithm was developped by * "Institut for Erdmessung", University of Hannover, July 1988. * Internet: www.ife.uni-hannover.de * Iterative computation of CPHI,SPHI and Height. * Iteration of CPHI and SPHI to 10**-12 radian resp. * 2*10**-7 arcsec. * -------------------------------------------------------------- */ CT = Z / RR; ST = P / RR; RX = 1.0 / Math.sqrt(1.0 - this.es * (2.0 - this.es) * ST * ST); CPHI0 = ST * (1.0 - this.es) * RX; SPHI0 = CT * RX; iter = 0; /* loop to find sin(Latitude) resp. Latitude * until |sin(Latitude(iter)-Latitude(iter-1))| < genau */ do { iter++; RN = this.a / Math.sqrt(1.0 - this.es * SPHI0 * SPHI0); /* ellipsoidal (geodetic) height */ Height = P * CPHI0 + Z * SPHI0 - RN * (1.0 - this.es * SPHI0 * SPHI0); RK = this.es * RN / (RN + Height); RX = 1.0 / Math.sqrt(1.0 - RK * (2.0 - RK) * ST * ST); CPHI = ST * (1.0 - RK) * RX; SPHI = CT * RX; SDPHI = SPHI * CPHI0 - CPHI * SPHI0; CPHI0 = CPHI; SPHI0 = SPHI; } while (SDPHI * SDPHI > genau2 && iter < maxiter); /* ellipsoidal (geodetic) latitude */ Latitude = Math.atan(SPHI / Math.abs(CPHI)); p.x = Longitude; p.y = Latitude; p.z = Height; return p; }, // cs_geocentric_to_geodetic() /** Convert_Geocentric_To_Geodetic * The method used here is derived from 'An Improved Algorithm for * Geocentric to Geodetic Coordinate Conversion', by Ralph Toms, Feb 1996 */ geocentric_to_geodetic_noniter: function(p) { var X = p.x; var Y = p.y; var Z = p.z ? p.z : 0; //Z value not always supplied var Longitude; var Latitude; var Height; var W; /* distance from Z axis */ var W2; /* square of distance from Z axis */ var T0; /* initial estimate of vertical component */ var T1; /* corrected estimate of vertical component */ var S0; /* initial estimate of horizontal component */ var S1; /* corrected estimate of horizontal component */ var Sin_B0; /* Math.sin(B0), B0 is estimate of Bowring aux variable */ var Sin3_B0; /* cube of Math.sin(B0) */ var Cos_B0; /* Math.cos(B0) */ var Sin_p1; /* Math.sin(phi1), phi1 is estimated latitude */ var Cos_p1; /* Math.cos(phi1) */ var Rn; /* Earth radius at location */ var Sum; /* numerator of Math.cos(phi1) */ var At_Pole; /* indicates location is in polar region */ X = parseFloat(X); // cast from string to float Y = parseFloat(Y); Z = parseFloat(Z); At_Pole = false; if (X !== 0.0) { Longitude = Math.atan2(Y, X); } else { if (Y > 0) { Longitude = HALF_PI; } else if (Y < 0) { Longitude = -HALF_PI; } else { At_Pole = true; Longitude = 0.0; if (Z > 0.0) { /* north pole */ Latitude = HALF_PI; } else if (Z < 0.0) { /* south pole */ Latitude = -HALF_PI; } else { /* center of earth */ Latitude = HALF_PI; Height = -this.b; return; } } } W2 = X * X + Y * Y; W = Math.sqrt(W2); T0 = Z * AD_C; S0 = Math.sqrt(T0 * T0 + W2); Sin_B0 = T0 / S0; Cos_B0 = W / S0; Sin3_B0 = Sin_B0 * Sin_B0 * Sin_B0; T1 = Z + this.b * this.ep2 * Sin3_B0; Sum = W - this.a * this.es * Cos_B0 * Cos_B0 * Cos_B0; S1 = Math.sqrt(T1 * T1 + Sum * Sum); Sin_p1 = T1 / S1; Cos_p1 = Sum / S1; Rn = this.a / Math.sqrt(1.0 - this.es * Sin_p1 * Sin_p1); if (Cos_p1 >= COS_67P5) { Height = W / Cos_p1 - Rn; } else if (Cos_p1 <= -COS_67P5) { Height = W / -Cos_p1 - Rn; } else { Height = Z / Sin_p1 + Rn * (this.es - 1.0); } if (At_Pole === false) { Latitude = Math.atan(Sin_p1 / Cos_p1); } p.x = Longitude; p.y = Latitude; p.z = Height; return p; }, // geocentric_to_geodetic_noniter() /****************************************************************/ // pj_geocentic_to_wgs84( p ) // p = point to transform in geocentric coordinates (x,y,z) geocentric_to_wgs84: function(p) { if (this.datum_type === PJD_3PARAM) { // if( x[io] === HUGE_VAL ) // continue; p.x += this.datum_params[0]; p.y += this.datum_params[1]; p.z += this.datum_params[2]; } else if (this.datum_type === PJD_7PARAM) { var Dx_BF = this.datum_params[0]; var Dy_BF = this.datum_params[1]; var Dz_BF = this.datum_params[2]; var Rx_BF = this.datum_params[3]; var Ry_BF = this.datum_params[4]; var Rz_BF = this.datum_params[5]; var M_BF = this.datum_params[6]; // if( x[io] === HUGE_VAL ) // continue; var x_out = M_BF * (p.x - Rz_BF * p.y + Ry_BF * p.z) + Dx_BF; var y_out = M_BF * (Rz_BF * p.x + p.y - Rx_BF * p.z) + Dy_BF; var z_out = M_BF * (-Ry_BF * p.x + Rx_BF * p.y + p.z) + Dz_BF; p.x = x_out; p.y = y_out; p.z = z_out; } }, // cs_geocentric_to_wgs84 /****************************************************************/ // pj_geocentic_from_wgs84() // coordinate system definition, // point to transform in geocentric coordinates (x,y,z) geocentric_from_wgs84: function(p) { if (this.datum_type === PJD_3PARAM) { //if( x[io] === HUGE_VAL ) // continue; p.x -= this.datum_params[0]; p.y -= this.datum_params[1]; p.z -= this.datum_params[2]; } else if (this.datum_type === PJD_7PARAM) { var Dx_BF = this.datum_params[0]; var Dy_BF = this.datum_params[1]; var Dz_BF = this.datum_params[2]; var Rx_BF = this.datum_params[3]; var Ry_BF = this.datum_params[4]; var Rz_BF = this.datum_params[5]; var M_BF = this.datum_params[6]; var x_tmp = (p.x - Dx_BF) / M_BF; var y_tmp = (p.y - Dy_BF) / M_BF; var z_tmp = (p.z - Dz_BF) / M_BF; //if( x[io] === HUGE_VAL ) // continue; p.x = x_tmp + Rz_BF * y_tmp - Ry_BF * z_tmp; p.y = -Rz_BF * x_tmp + y_tmp + Rx_BF * z_tmp; p.z = Ry_BF * x_tmp - Rx_BF * y_tmp + z_tmp; } //cs_geocentric_from_wgs84() } }; /** point object, nothing fancy, just allows values to be passed back and forth by reference rather than by value. Other point classes may be used as long as they have x and y properties, which will get modified in the transform method. */ module.exports = datum; },{}],31:[function(_dereq_,module,exports){ var PJD_3PARAM = 1; var PJD_7PARAM = 2; var PJD_GRIDSHIFT = 3; var PJD_NODATUM = 5; // WGS84 or equivalent var SRS_WGS84_SEMIMAJOR = 6378137; // only used in grid shift transforms var SRS_WGS84_ESQUARED = 0.006694379990141316; //DGR: 2012-07-29 module.exports = function(source, dest, point) { var wp, i, l; function checkParams(fallback) { return (fallback === PJD_3PARAM || fallback === PJD_7PARAM); } // Short cut if the datums are identical. if (source.compare_datums(dest)) { return point; // in this case, zero is sucess, // whereas cs_compare_datums returns 1 to indicate TRUE // confusing, should fix this } // Explicitly skip datum transform by setting 'datum=none' as parameter for either source or dest if (source.datum_type === PJD_NODATUM || dest.datum_type === PJD_NODATUM) { return point; } //DGR: 2012-07-29 : add nadgrids support (begin) var src_a = source.a; var src_es = source.es; var dst_a = dest.a; var dst_es = dest.es; var fallback = source.datum_type; // If this datum requires grid shifts, then apply it to geodetic coordinates. if (fallback === PJD_GRIDSHIFT) { if (this.apply_gridshift(source, 0, point) === 0) { source.a = SRS_WGS84_SEMIMAJOR; source.es = SRS_WGS84_ESQUARED; } else { // try 3 or 7 params transformation or nothing ? if (!source.datum_params) { source.a = src_a; source.es = source.es; return point; } wp = 1; for (i = 0, l = source.datum_params.length; i < l; i++) { wp *= source.datum_params[i]; } if (wp === 0) { source.a = src_a; source.es = source.es; return point; } if (source.datum_params.length > 3) { fallback = PJD_7PARAM; } else { fallback = PJD_3PARAM; } } } if (dest.datum_type === PJD_GRIDSHIFT) { dest.a = SRS_WGS84_SEMIMAJOR; dest.es = SRS_WGS84_ESQUARED; } // Do we need to go through geocentric coordinates? if (source.es !== dest.es || source.a !== dest.a || checkParams(fallback) || checkParams(dest.datum_type)) { //DGR: 2012-07-29 : add nadgrids support (end) // Convert to geocentric coordinates. source.geodetic_to_geocentric(point); // CHECK_RETURN; // Convert between datums if (checkParams(source.datum_type)) { source.geocentric_to_wgs84(point); // CHECK_RETURN; } if (checkParams(dest.datum_type)) { dest.geocentric_from_wgs84(point); // CHECK_RETURN; } // Convert back to geodetic coordinates dest.geocentric_to_geodetic(point); // CHECK_RETURN; } // Apply grid shift to destination if required if (dest.datum_type === PJD_GRIDSHIFT) { this.apply_gridshift(dest, 1, point); // CHECK_RETURN; } source.a = src_a; source.es = src_es; dest.a = dst_a; dest.es = dst_es; return point; }; },{}],32:[function(_dereq_,module,exports){ var globals = _dereq_('./global'); var parseProj = _dereq_('./projString'); var wkt = _dereq_('./wkt'); function defs(name) { /*global console*/ var that = this; if (arguments.length === 2) { var def = arguments[1]; if (typeof def === 'string') { if (def.charAt(0) === '+') { defs[name] = parseProj(arguments[1]); } else { defs[name] = wkt(arguments[1]); } } else { defs[name] = def; } } else if (arguments.length === 1) { if (Array.isArray(name)) { return name.map(function(v) { if (Array.isArray(v)) { defs.apply(that, v); } else { defs(v); } }); } else if (typeof name === 'string') { if (name in defs) { return defs[name]; } } else if ('EPSG' in name) { defs['EPSG:' + name.EPSG] = name; } else if ('ESRI' in name) { defs['ESRI:' + name.ESRI] = name; } else if ('IAU2000' in name) { defs['IAU2000:' + name.IAU2000] = name; } else { console.log(name); } return; } } globals(defs); module.exports = defs; },{"./global":35,"./projString":38,"./wkt":66}],33:[function(_dereq_,module,exports){ var Datum = _dereq_('./constants/Datum'); var Ellipsoid = _dereq_('./constants/Ellipsoid'); var extend = _dereq_('./extend'); var datum = _dereq_('./datum'); var EPSLN = 1.0e-10; // ellipoid pj_set_ell.c var SIXTH = 0.1666666666666666667; /* 1/6 */ var RA4 = 0.04722222222222222222; /* 17/360 */ var RA6 = 0.02215608465608465608; module.exports = function(json) { // DGR 2011-03-20 : nagrids -> nadgrids if (json.datumCode && json.datumCode !== 'none') { var datumDef = Datum[json.datumCode]; if (datumDef) { json.datum_params = datumDef.towgs84 ? datumDef.towgs84.split(',') : null; json.ellps = datumDef.ellipse; json.datumName = datumDef.datumName ? datumDef.datumName : json.datumCode; } } if (!json.a) { // do we have an ellipsoid? var ellipse = Ellipsoid[json.ellps] ? Ellipsoid[json.ellps] : Ellipsoid.WGS84; extend(json, ellipse); } if (json.rf && !json.b) { json.b = (1.0 - 1.0 / json.rf) * json.a; } if (json.rf === 0 || Math.abs(json.a - json.b) < EPSLN) { json.sphere = true; json.b = json.a; } json.a2 = json.a * json.a; // used in geocentric json.b2 = json.b * json.b; // used in geocentric json.es = (json.a2 - json.b2) / json.a2; // e ^ 2 json.e = Math.sqrt(json.es); // eccentricity if (json.R_A) { json.a *= 1 - json.es * (SIXTH + json.es * (RA4 + json.es * RA6)); json.a2 = json.a * json.a; json.b2 = json.b * json.b; json.es = 0; } json.ep2 = (json.a2 - json.b2) / json.b2; // used in geocentric if (!json.k0) { json.k0 = 1.0; //default value } //DGR 2010-11-12: axis if (!json.axis) { json.axis = "enu"; } if (!json.datum) { json.datum = datum(json); } return json; }; },{"./constants/Datum":25,"./constants/Ellipsoid":26,"./datum":30,"./extend":34}],34:[function(_dereq_,module,exports){ module.exports = function(destination, source) { destination = destination || {}; var value, property; if (!source) { return destination; } for (property in source) { value = source[property]; if (value !== undefined) { destination[property] = value; } } return destination; }; },{}],35:[function(_dereq_,module,exports){ module.exports = function(defs) { defs('EPSG:4326', "+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees"); defs('EPSG:4269', "+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees"); defs('EPSG:3857', "+title=WGS 84 / Pseudo-Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs"); defs.WGS84 = defs['EPSG:4326']; defs['EPSG:3785'] = defs['EPSG:3857']; // maintain backward compat, official code is 3857 defs.GOOGLE = defs['EPSG:3857']; defs['EPSG:900913'] = defs['EPSG:3857']; defs['EPSG:102113'] = defs['EPSG:3857']; }; },{}],36:[function(_dereq_,module,exports){ var proj4 = _dereq_('./core'); proj4.defaultDatum = 'WGS84'; //default datum proj4.Proj = _dereq_('./Proj'); proj4.WGS84 = new proj4.Proj('WGS84'); proj4.Point = _dereq_('./Point'); proj4.toPoint = _dereq_("./common/toPoint"); proj4.defs = _dereq_('./defs'); proj4.transform = _dereq_('./transform'); proj4.mgrs = _dereq_('mgrs'); proj4.version = _dereq_('../package.json').version; _dereq_('./includedProjections')(proj4); module.exports = proj4; },{"../package.json":68,"./Point":1,"./Proj":2,"./common/toPoint":23,"./core":29,"./defs":32,"./includedProjections":"hTEDpn","./transform":65,"mgrs":67}],37:[function(_dereq_,module,exports){ var defs = _dereq_('./defs'); var wkt = _dereq_('./wkt'); var projStr = _dereq_('./projString'); function testObj(code){ return typeof code === 'string'; } function testDef(code){ return code in defs; } function testWKT(code){ var codeWords = ['GEOGCS','GEOCCS','PROJCS','LOCAL_CS']; return codeWords.reduce(function(a,b){ return a+1+code.indexOf(b); },0); } function testProj(code){ return code[0] === '+'; } function parse(code){ if (testObj(code)) { //check to see if this is a WKT string if (testDef(code)) { return defs[code]; } else if (testWKT(code)) { return wkt(code); } else if (testProj(code)) { return projStr(code); } }else{ return code; } } module.exports = parse; },{"./defs":32,"./projString":38,"./wkt":66}],38:[function(_dereq_,module,exports){ var D2R = 0.01745329251994329577; var PrimeMeridian = _dereq_('./constants/PrimeMeridian'); var units = _dereq_('./constants/units'); module.exports = function(defData) { var self = {}; var paramObj = {}; defData.split("+").map(function(v) { return v.trim(); }).filter(function(a) { return a; }).forEach(function(a) { var split = a.split("="); split.push(true); paramObj[split[0].toLowerCase()] = split[1]; }); var paramName, paramVal, paramOutname; var params = { proj: 'projName', datum: 'datumCode', rf: function(v) { self.rf = parseFloat(v); }, lat_0: function(v) { self.lat0 = v * D2R; }, lat_1: function(v) { self.lat1 = v * D2R; }, lat_2: function(v) { self.lat2 = v * D2R; }, lat_ts: function(v) { self.lat_ts = v * D2R; }, lon_0: function(v) { self.long0 = v * D2R; }, lon_1: function(v) { self.long1 = v * D2R; }, lon_2: function(v) { self.long2 = v * D2R; }, alpha: function(v) { self.alpha = parseFloat(v) * D2R; }, lonc: function(v) { self.longc = v * D2R; }, x_0: function(v) { self.x0 = parseFloat(v); }, y_0: function(v) { self.y0 = parseFloat(v); }, k_0: function(v) { self.k0 = parseFloat(v); }, k: function(v) { self.k0 = parseFloat(v); }, a: function(v) { self.a = parseFloat(v); }, b: function(v) { self.b = parseFloat(v); }, r_a: function() { self.R_A = true; }, zone: function(v) { self.zone = parseInt(v, 10); }, south: function() { self.utmSouth = true; }, towgs84: function(v) { self.datum_params = v.split(",").map(function(a) { return parseFloat(a); }); }, to_meter: function(v) { self.to_meter = parseFloat(v); }, units: function(v) { self.units = v; if (units[v]) { self.to_meter = units[v].to_meter; } }, from_greenwich: function(v) { self.from_greenwich = v * D2R; }, pm: function(v) { self.from_greenwich = (PrimeMeridian[v] ? PrimeMeridian[v] : parseFloat(v)) * D2R; }, nadgrids: function(v) { if (v === '@null') { self.datumCode = 'none'; } else { self.nadgrids = v; } }, axis: function(v) { var legalAxis = "ewnsud"; if (v.length === 3 && legalAxis.indexOf(v.substr(0, 1)) !== -1 && legalAxis.indexOf(v.substr(1, 1)) !== -1 && legalAxis.indexOf(v.substr(2, 1)) !== -1) { self.axis = v; } } }; for (paramName in paramObj) { paramVal = paramObj[paramName]; if (paramName in params) { paramOutname = params[paramName]; if (typeof paramOutname === 'function') { paramOutname(paramVal); } else { self[paramOutname] = paramVal; } } else { self[paramName] = paramVal; } } if(typeof self.datumCode === 'string' && self.datumCode !== "WGS84"){ self.datumCode = self.datumCode.toLowerCase(); } return self; }; },{"./constants/PrimeMeridian":27,"./constants/units":28}],39:[function(_dereq_,module,exports){ var projs = [ _dereq_('./projections/merc'), _dereq_('./projections/longlat') ]; var names = {}; var projStore = []; function add(proj, i) { var len = projStore.length; if (!proj.names) { console.log(i); return true; } projStore[len] = proj; proj.names.forEach(function(n) { names[n.toLowerCase()] = len; }); return this; } exports.add = add; exports.get = function(name) { if (!name) { return false; } var n = name.toLowerCase(); if (typeof names[n] !== 'undefined' && projStore[names[n]]) { return projStore[names[n]]; } }; exports.start = function() { projs.forEach(add); }; },{"./projections/longlat":51,"./projections/merc":52}],40:[function(_dereq_,module,exports){ var EPSLN = 1.0e-10; var msfnz = _dereq_('../common/msfnz'); var qsfnz = _dereq_('../common/qsfnz'); var adjust_lon = _dereq_('../common/adjust_lon'); var asinz = _dereq_('../common/asinz'); exports.init = function() { if (Math.abs(this.lat1 + this.lat2) < EPSLN) { return; } this.temp = this.b / this.a; this.es = 1 - Math.pow(this.temp, 2); this.e3 = Math.sqrt(this.es); this.sin_po = Math.sin(this.lat1); this.cos_po = Math.cos(this.lat1); this.t1 = this.sin_po; this.con = this.sin_po; this.ms1 = msfnz(this.e3, this.sin_po, this.cos_po); this.qs1 = qsfnz(this.e3, this.sin_po, this.cos_po); this.sin_po = Math.sin(this.lat2); this.cos_po = Math.cos(this.lat2); this.t2 = this.sin_po; this.ms2 = msfnz(this.e3, this.sin_po, this.cos_po); this.qs2 = qsfnz(this.e3, this.sin_po, this.cos_po); this.sin_po = Math.sin(this.lat0); this.cos_po = Math.cos(this.lat0); this.t3 = this.sin_po; this.qs0 = qsfnz(this.e3, this.sin_po, this.cos_po); if (Math.abs(this.lat1 - this.lat2) > EPSLN) { this.ns0 = (this.ms1 * this.ms1 - this.ms2 * this.ms2) / (this.qs2 - this.qs1); } else { this.ns0 = this.con; } this.c = this.ms1 * this.ms1 + this.ns0 * this.qs1; this.rh = this.a * Math.sqrt(this.c - this.ns0 * this.qs0) / this.ns0; }; /* Albers Conical Equal Area forward equations--mapping lat,long to x,y -------------------------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; this.sin_phi = Math.sin(lat); this.cos_phi = Math.cos(lat); var qs = qsfnz(this.e3, this.sin_phi, this.cos_phi); var rh1 = this.a * Math.sqrt(this.c - this.ns0 * qs) / this.ns0; var theta = this.ns0 * adjust_lon(lon - this.long0); var x = rh1 * Math.sin(theta) + this.x0; var y = this.rh - rh1 * Math.cos(theta) + this.y0; p.x = x; p.y = y; return p; }; exports.inverse = function(p) { var rh1, qs, con, theta, lon, lat; p.x -= this.x0; p.y = this.rh - p.y + this.y0; if (this.ns0 >= 0) { rh1 = Math.sqrt(p.x * p.x + p.y * p.y); con = 1; } else { rh1 = -Math.sqrt(p.x * p.x + p.y * p.y); con = -1; } theta = 0; if (rh1 !== 0) { theta = Math.atan2(con * p.x, con * p.y); } con = rh1 * this.ns0 / this.a; if (this.sphere) { lat = Math.asin((this.c - con * con) / (2 * this.ns0)); } else { qs = (this.c - con * con) / this.ns0; lat = this.phi1z(this.e3, qs); } lon = adjust_lon(theta / this.ns0 + this.long0); p.x = lon; p.y = lat; return p; }; /* Function to compute phi1, the latitude for the inverse of the Albers Conical Equal-Area projection. -------------------------------------------*/ exports.phi1z = function(eccent, qs) { var sinphi, cosphi, con, com, dphi; var phi = asinz(0.5 * qs); if (eccent < EPSLN) { return phi; } var eccnts = eccent * eccent; for (var i = 1; i <= 25; i++) { sinphi = Math.sin(phi); cosphi = Math.cos(phi); con = eccent * sinphi; com = 1 - con * con; dphi = 0.5 * com * com / cosphi * (qs / (1 - eccnts) - sinphi / com + 0.5 / eccent * Math.log((1 - con) / (1 + con))); phi = phi + dphi; if (Math.abs(dphi) <= 1e-7) { return phi; } } return null; }; exports.names = ["Albers_Conic_Equal_Area", "Albers", "aea"]; },{"../common/adjust_lon":5,"../common/asinz":6,"../common/msfnz":15,"../common/qsfnz":20}],41:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; var mlfn = _dereq_('../common/mlfn'); var e0fn = _dereq_('../common/e0fn'); var e1fn = _dereq_('../common/e1fn'); var e2fn = _dereq_('../common/e2fn'); var e3fn = _dereq_('../common/e3fn'); var gN = _dereq_('../common/gN'); var asinz = _dereq_('../common/asinz'); var imlfn = _dereq_('../common/imlfn'); exports.init = function() { this.sin_p12 = Math.sin(this.lat0); this.cos_p12 = Math.cos(this.lat0); }; exports.forward = function(p) { var lon = p.x; var lat = p.y; var sinphi = Math.sin(p.y); var cosphi = Math.cos(p.y); var dlon = adjust_lon(lon - this.long0); var e0, e1, e2, e3, Mlp, Ml, tanphi, Nl1, Nl, psi, Az, G, H, GH, Hs, c, kp, cos_c, s, s2, s3, s4, s5; if (this.sphere) { if (Math.abs(this.sin_p12 - 1) <= EPSLN) { //North Pole case p.x = this.x0 + this.a * (HALF_PI - lat) * Math.sin(dlon); p.y = this.y0 - this.a * (HALF_PI - lat) * Math.cos(dlon); return p; } else if (Math.abs(this.sin_p12 + 1) <= EPSLN) { //South Pole case p.x = this.x0 + this.a * (HALF_PI + lat) * Math.sin(dlon); p.y = this.y0 + this.a * (HALF_PI + lat) * Math.cos(dlon); return p; } else { //default case cos_c = this.sin_p12 * sinphi + this.cos_p12 * cosphi * Math.cos(dlon); c = Math.acos(cos_c); kp = c / Math.sin(c); p.x = this.x0 + this.a * kp * cosphi * Math.sin(dlon); p.y = this.y0 + this.a * kp * (this.cos_p12 * sinphi - this.sin_p12 * cosphi * Math.cos(dlon)); return p; } } else { e0 = e0fn(this.es); e1 = e1fn(this.es); e2 = e2fn(this.es); e3 = e3fn(this.es); if (Math.abs(this.sin_p12 - 1) <= EPSLN) { //North Pole case Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI); Ml = this.a * mlfn(e0, e1, e2, e3, lat); p.x = this.x0 + (Mlp - Ml) * Math.sin(dlon); p.y = this.y0 - (Mlp - Ml) * Math.cos(dlon); return p; } else if (Math.abs(this.sin_p12 + 1) <= EPSLN) { //South Pole case Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI); Ml = this.a * mlfn(e0, e1, e2, e3, lat); p.x = this.x0 + (Mlp + Ml) * Math.sin(dlon); p.y = this.y0 + (Mlp + Ml) * Math.cos(dlon); return p; } else { //Default case tanphi = sinphi / cosphi; Nl1 = gN(this.a, this.e, this.sin_p12); Nl = gN(this.a, this.e, sinphi); psi = Math.atan((1 - this.es) * tanphi + this.es * Nl1 * this.sin_p12 / (Nl * cosphi)); Az = Math.atan2(Math.sin(dlon), this.cos_p12 * Math.tan(psi) - this.sin_p12 * Math.cos(dlon)); if (Az === 0) { s = Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi)); } else if (Math.abs(Math.abs(Az) - Math.PI) <= EPSLN) { s = -Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi)); } else { s = Math.asin(Math.sin(dlon) * Math.cos(psi) / Math.sin(Az)); } G = this.e * this.sin_p12 / Math.sqrt(1 - this.es); H = this.e * this.cos_p12 * Math.cos(Az) / Math.sqrt(1 - this.es); GH = G * H; Hs = H * H; s2 = s * s; s3 = s2 * s; s4 = s3 * s; s5 = s4 * s; c = Nl1 * s * (1 - s2 * Hs * (1 - Hs) / 6 + s3 / 8 * GH * (1 - 2 * Hs) + s4 / 120 * (Hs * (4 - 7 * Hs) - 3 * G * G * (1 - 7 * Hs)) - s5 / 48 * GH); p.x = this.x0 + c * Math.sin(Az); p.y = this.y0 + c * Math.cos(Az); return p; } } }; exports.inverse = function(p) { p.x -= this.x0; p.y -= this.y0; var rh, z, sinz, cosz, lon, lat, con, e0, e1, e2, e3, Mlp, M, N1, psi, Az, cosAz, tmp, A, B, D, Ee, F; if (this.sphere) { rh = Math.sqrt(p.x * p.x + p.y * p.y); if (rh > (2 * HALF_PI * this.a)) { return; } z = rh / this.a; sinz = Math.sin(z); cosz = Math.cos(z); lon = this.long0; if (Math.abs(rh) <= EPSLN) { lat = this.lat0; } else { lat = asinz(cosz * this.sin_p12 + (p.y * sinz * this.cos_p12) / rh); con = Math.abs(this.lat0) - HALF_PI; if (Math.abs(con) <= EPSLN) { if (this.lat0 >= 0) { lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y)); } else { lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y)); } } else { /*con = cosz - this.sin_p12 * Math.sin(lat); if ((Math.abs(con) < EPSLN) && (Math.abs(p.x) < EPSLN)) { //no-op, just keep the lon value as is } else { var temp = Math.atan2((p.x * sinz * this.cos_p12), (con * rh)); lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz * this.cos_p12), (con * rh))); }*/ lon = adjust_lon(this.long0 + Math.atan2(p.x * sinz, rh * this.cos_p12 * cosz - p.y * this.sin_p12 * sinz)); } } p.x = lon; p.y = lat; return p; } else { e0 = e0fn(this.es); e1 = e1fn(this.es); e2 = e2fn(this.es); e3 = e3fn(this.es); if (Math.abs(this.sin_p12 - 1) <= EPSLN) { //North pole case Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI); rh = Math.sqrt(p.x * p.x + p.y * p.y); M = Mlp - rh; lat = imlfn(M / this.a, e0, e1, e2, e3); lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y)); p.x = lon; p.y = lat; return p; } else if (Math.abs(this.sin_p12 + 1) <= EPSLN) { //South pole case Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI); rh = Math.sqrt(p.x * p.x + p.y * p.y); M = rh - Mlp; lat = imlfn(M / this.a, e0, e1, e2, e3); lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y)); p.x = lon; p.y = lat; return p; } else { //default case rh = Math.sqrt(p.x * p.x + p.y * p.y); Az = Math.atan2(p.x, p.y); N1 = gN(this.a, this.e, this.sin_p12); cosAz = Math.cos(Az); tmp = this.e * this.cos_p12 * cosAz; A = -tmp * tmp / (1 - this.es); B = 3 * this.es * (1 - A) * this.sin_p12 * this.cos_p12 * cosAz / (1 - this.es); D = rh / N1; Ee = D - A * (1 + A) * Math.pow(D, 3) / 6 - B * (1 + 3 * A) * Math.pow(D, 4) / 24; F = 1 - A * Ee * Ee / 2 - D * Ee * Ee * Ee / 6; psi = Math.asin(this.sin_p12 * Math.cos(Ee) + this.cos_p12 * Math.sin(Ee) * cosAz); lon = adjust_lon(this.long0 + Math.asin(Math.sin(Az) * Math.sin(Ee) / Math.cos(psi))); lat = Math.atan((1 - this.es * F * this.sin_p12 / Math.sin(psi)) * Math.tan(psi) / (1 - this.es)); p.x = lon; p.y = lat; return p; } } }; exports.names = ["Azimuthal_Equidistant", "aeqd"]; },{"../common/adjust_lon":5,"../common/asinz":6,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/gN":11,"../common/imlfn":12,"../common/mlfn":14}],42:[function(_dereq_,module,exports){ var mlfn = _dereq_('../common/mlfn'); var e0fn = _dereq_('../common/e0fn'); var e1fn = _dereq_('../common/e1fn'); var e2fn = _dereq_('../common/e2fn'); var e3fn = _dereq_('../common/e3fn'); var gN = _dereq_('../common/gN'); var adjust_lon = _dereq_('../common/adjust_lon'); var adjust_lat = _dereq_('../common/adjust_lat'); var imlfn = _dereq_('../common/imlfn'); var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; exports.init = function() { if (!this.sphere) { this.e0 = e0fn(this.es); this.e1 = e1fn(this.es); this.e2 = e2fn(this.es); this.e3 = e3fn(this.es); this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); } }; /* Cassini forward equations--mapping lat,long to x,y -----------------------------------------------------------------------*/ exports.forward = function(p) { /* Forward equations -----------------*/ var x, y; var lam = p.x; var phi = p.y; lam = adjust_lon(lam - this.long0); if (this.sphere) { x = this.a * Math.asin(Math.cos(phi) * Math.sin(lam)); y = this.a * (Math.atan2(Math.tan(phi), Math.cos(lam)) - this.lat0); } else { //ellipsoid var sinphi = Math.sin(phi); var cosphi = Math.cos(phi); var nl = gN(this.a, this.e, sinphi); var tl = Math.tan(phi) * Math.tan(phi); var al = lam * Math.cos(phi); var asq = al * al; var cl = this.es * cosphi * cosphi / (1 - this.es); var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi); x = nl * al * (1 - asq * tl * (1 / 6 - (8 - tl + 8 * cl) * asq / 120)); y = ml - this.ml0 + nl * sinphi / cosphi * asq * (0.5 + (5 - tl + 6 * cl) * asq / 24); } p.x = x + this.x0; p.y = y + this.y0; return p; }; /* Inverse equations -----------------*/ exports.inverse = function(p) { p.x -= this.x0; p.y -= this.y0; var x = p.x / this.a; var y = p.y / this.a; var phi, lam; if (this.sphere) { var dd = y + this.lat0; phi = Math.asin(Math.sin(dd) * Math.cos(x)); lam = Math.atan2(Math.tan(x), Math.cos(dd)); } else { /* ellipsoid */ var ml1 = this.ml0 / this.a + y; var phi1 = imlfn(ml1, this.e0, this.e1, this.e2, this.e3); if (Math.abs(Math.abs(phi1) - HALF_PI) <= EPSLN) { p.x = this.long0; p.y = HALF_PI; if (y < 0) { p.y *= -1; } return p; } var nl1 = gN(this.a, this.e, Math.sin(phi1)); var rl1 = nl1 * nl1 * nl1 / this.a / this.a * (1 - this.es); var tl1 = Math.pow(Math.tan(phi1), 2); var dl = x * this.a / nl1; var dsq = dl * dl; phi = phi1 - nl1 * Math.tan(phi1) / rl1 * dl * dl * (0.5 - (1 + 3 * tl1) * dl * dl / 24); lam = dl * (1 - dsq * (tl1 / 3 + (1 + 3 * tl1) * tl1 * dsq / 15)) / Math.cos(phi1); } p.x = adjust_lon(lam + this.long0); p.y = adjust_lat(phi); return p; }; exports.names = ["Cassini", "Cassini_Soldner", "cass"]; },{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/gN":11,"../common/imlfn":12,"../common/mlfn":14}],43:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var qsfnz = _dereq_('../common/qsfnz'); var msfnz = _dereq_('../common/msfnz'); var iqsfnz = _dereq_('../common/iqsfnz'); /* reference: "Cartographic Projection Procedures for the UNIX Environment- A User's Manual" by Gerald I. Evenden, USGS Open File Report 90-284and Release 4 Interim Reports (2003) */ exports.init = function() { //no-op if (!this.sphere) { this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)); } }; /* Cylindrical Equal Area forward equations--mapping lat,long to x,y ------------------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; var x, y; /* Forward equations -----------------*/ var dlon = adjust_lon(lon - this.long0); if (this.sphere) { x = this.x0 + this.a * dlon * Math.cos(this.lat_ts); y = this.y0 + this.a * Math.sin(lat) / Math.cos(this.lat_ts); } else { var qs = qsfnz(this.e, Math.sin(lat)); x = this.x0 + this.a * this.k0 * dlon; y = this.y0 + this.a * qs * 0.5 / this.k0; } p.x = x; p.y = y; return p; }; /* Cylindrical Equal Area inverse equations--mapping x,y to lat/long ------------------------------------------------------------*/ exports.inverse = function(p) { p.x -= this.x0; p.y -= this.y0; var lon, lat; if (this.sphere) { lon = adjust_lon(this.long0 + (p.x / this.a) / Math.cos(this.lat_ts)); lat = Math.asin((p.y / this.a) * Math.cos(this.lat_ts)); } else { lat = iqsfnz(this.e, 2 * p.y * this.k0 / this.a); lon = adjust_lon(this.long0 + p.x / (this.a * this.k0)); } p.x = lon; p.y = lat; return p; }; exports.names = ["cea"]; },{"../common/adjust_lon":5,"../common/iqsfnz":13,"../common/msfnz":15,"../common/qsfnz":20}],44:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var adjust_lat = _dereq_('../common/adjust_lat'); exports.init = function() { this.x0 = this.x0 || 0; this.y0 = this.y0 || 0; this.lat0 = this.lat0 || 0; this.long0 = this.long0 || 0; this.lat_ts = this.lat_ts || 0; this.title = this.title || "Equidistant Cylindrical (Plate Carre)"; this.rc = Math.cos(this.lat_ts); }; // forward equations--mapping lat,long to x,y // ----------------------------------------------------------------- exports.forward = function(p) { var lon = p.x; var lat = p.y; var dlon = adjust_lon(lon - this.long0); var dlat = adjust_lat(lat - this.lat0); p.x = this.x0 + (this.a * dlon * this.rc); p.y = this.y0 + (this.a * dlat); return p; }; // inverse equations--mapping x,y to lat/long // ----------------------------------------------------------------- exports.inverse = function(p) { var x = p.x; var y = p.y; p.x = adjust_lon(this.long0 + ((x - this.x0) / (this.a * this.rc))); p.y = adjust_lat(this.lat0 + ((y - this.y0) / (this.a))); return p; }; exports.names = ["Equirectangular", "Equidistant_Cylindrical", "eqc"]; },{"../common/adjust_lat":4,"../common/adjust_lon":5}],45:[function(_dereq_,module,exports){ var e0fn = _dereq_('../common/e0fn'); var e1fn = _dereq_('../common/e1fn'); var e2fn = _dereq_('../common/e2fn'); var e3fn = _dereq_('../common/e3fn'); var msfnz = _dereq_('../common/msfnz'); var mlfn = _dereq_('../common/mlfn'); var adjust_lon = _dereq_('../common/adjust_lon'); var adjust_lat = _dereq_('../common/adjust_lat'); var imlfn = _dereq_('../common/imlfn'); var EPSLN = 1.0e-10; exports.init = function() { /* Place parameters in static storage for common use -------------------------------------------------*/ // Standard Parallels cannot be equal and on opposite sides of the equator if (Math.abs(this.lat1 + this.lat2) < EPSLN) { return; } this.lat2 = this.lat2 || this.lat1; this.temp = this.b / this.a; this.es = 1 - Math.pow(this.temp, 2); this.e = Math.sqrt(this.es); this.e0 = e0fn(this.es); this.e1 = e1fn(this.es); this.e2 = e2fn(this.es); this.e3 = e3fn(this.es); this.sinphi = Math.sin(this.lat1); this.cosphi = Math.cos(this.lat1); this.ms1 = msfnz(this.e, this.sinphi, this.cosphi); this.ml1 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat1); if (Math.abs(this.lat1 - this.lat2) < EPSLN) { this.ns = this.sinphi; } else { this.sinphi = Math.sin(this.lat2); this.cosphi = Math.cos(this.lat2); this.ms2 = msfnz(this.e, this.sinphi, this.cosphi); this.ml2 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat2); this.ns = (this.ms1 - this.ms2) / (this.ml2 - this.ml1); } this.g = this.ml1 + this.ms1 / this.ns; this.ml0 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); this.rh = this.a * (this.g - this.ml0); }; /* Equidistant Conic forward equations--mapping lat,long to x,y -----------------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; var rh1; /* Forward equations -----------------*/ if (this.sphere) { rh1 = this.a * (this.g - lat); } else { var ml = mlfn(this.e0, this.e1, this.e2, this.e3, lat); rh1 = this.a * (this.g - ml); } var theta = this.ns * adjust_lon(lon - this.long0); var x = this.x0 + rh1 * Math.sin(theta); var y = this.y0 + this.rh - rh1 * Math.cos(theta); p.x = x; p.y = y; return p; }; /* Inverse equations -----------------*/ exports.inverse = function(p) { p.x -= this.x0; p.y = this.rh - p.y + this.y0; var con, rh1, lat, lon; if (this.ns >= 0) { rh1 = Math.sqrt(p.x * p.x + p.y * p.y); con = 1; } else { rh1 = -Math.sqrt(p.x * p.x + p.y * p.y); con = -1; } var theta = 0; if (rh1 !== 0) { theta = Math.atan2(con * p.x, con * p.y); } if (this.sphere) { lon = adjust_lon(this.long0 + theta / this.ns); lat = adjust_lat(this.g - rh1 / this.a); p.x = lon; p.y = lat; return p; } else { var ml = this.g - rh1 / this.a; lat = imlfn(ml, this.e0, this.e1, this.e2, this.e3); lon = adjust_lon(this.long0 + theta / this.ns); p.x = lon; p.y = lat; return p; } }; exports.names = ["Equidistant_Conic", "eqdc"]; },{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/imlfn":12,"../common/mlfn":14,"../common/msfnz":15}],46:[function(_dereq_,module,exports){ var FORTPI = Math.PI/4; var srat = _dereq_('../common/srat'); var HALF_PI = Math.PI/2; var MAX_ITER = 20; exports.init = function() { var sphi = Math.sin(this.lat0); var cphi = Math.cos(this.lat0); cphi *= cphi; this.rc = Math.sqrt(1 - this.es) / (1 - this.es * sphi * sphi); this.C = Math.sqrt(1 + this.es * cphi * cphi / (1 - this.es)); this.phic0 = Math.asin(sphi / this.C); this.ratexp = 0.5 * this.C * this.e; this.K = Math.tan(0.5 * this.phic0 + FORTPI) / (Math.pow(Math.tan(0.5 * this.lat0 + FORTPI), this.C) * srat(this.e * sphi, this.ratexp)); }; exports.forward = function(p) { var lon = p.x; var lat = p.y; p.y = 2 * Math.atan(this.K * Math.pow(Math.tan(0.5 * lat + FORTPI), this.C) * srat(this.e * Math.sin(lat), this.ratexp)) - HALF_PI; p.x = this.C * lon; return p; }; exports.inverse = function(p) { var DEL_TOL = 1e-14; var lon = p.x / this.C; var lat = p.y; var num = Math.pow(Math.tan(0.5 * lat + FORTPI) / this.K, 1 / this.C); for (var i = MAX_ITER; i > 0; --i) { lat = 2 * Math.atan(num * srat(this.e * Math.sin(p.y), - 0.5 * this.e)) - HALF_PI; if (Math.abs(lat - p.y) < DEL_TOL) { break; } p.y = lat; } /* convergence failed */ if (!i) { return null; } p.x = lon; p.y = lat; return p; }; exports.names = ["gauss"]; },{"../common/srat":22}],47:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var EPSLN = 1.0e-10; var asinz = _dereq_('../common/asinz'); /* reference: Wolfram Mathworld "Gnomonic Projection" http://mathworld.wolfram.com/GnomonicProjection.html Accessed: 12th November 2009 */ exports.init = function() { /* Place parameters in static storage for common use -------------------------------------------------*/ this.sin_p14 = Math.sin(this.lat0); this.cos_p14 = Math.cos(this.lat0); // Approximation for projecting points to the horizon (infinity) this.infinity_dist = 1000 * this.a; this.rc = 1; }; /* Gnomonic forward equations--mapping lat,long to x,y ---------------------------------------------------*/ exports.forward = function(p) { var sinphi, cosphi; /* sin and cos value */ var dlon; /* delta longitude value */ var coslon; /* cos of longitude */ var ksp; /* scale factor */ var g; var x, y; var lon = p.x; var lat = p.y; /* Forward equations -----------------*/ dlon = adjust_lon(lon - this.long0); sinphi = Math.sin(lat); cosphi = Math.cos(lat); coslon = Math.cos(dlon); g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon; ksp = 1; if ((g > 0) || (Math.abs(g) <= EPSLN)) { x = this.x0 + this.a * ksp * cosphi * Math.sin(dlon) / g; y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon) / g; } else { // Point is in the opposing hemisphere and is unprojectable // We still need to return a reasonable point, so we project // to infinity, on a bearing // equivalent to the northern hemisphere equivalent // This is a reasonable approximation for short shapes and lines that // straddle the horizon. x = this.x0 + this.infinity_dist * cosphi * Math.sin(dlon); y = this.y0 + this.infinity_dist * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon); } p.x = x; p.y = y; return p; }; exports.inverse = function(p) { var rh; /* Rho */ var sinc, cosc; var c; var lon, lat; /* Inverse equations -----------------*/ p.x = (p.x - this.x0) / this.a; p.y = (p.y - this.y0) / this.a; p.x /= this.k0; p.y /= this.k0; if ((rh = Math.sqrt(p.x * p.x + p.y * p.y))) { c = Math.atan2(rh, this.rc); sinc = Math.sin(c); cosc = Math.cos(c); lat = asinz(cosc * this.sin_p14 + (p.y * sinc * this.cos_p14) / rh); lon = Math.atan2(p.x * sinc, rh * this.cos_p14 * cosc - p.y * this.sin_p14 * sinc); lon = adjust_lon(this.long0 + lon); } else { lat = this.phic0; lon = 0; } p.x = lon; p.y = lat; return p; }; exports.names = ["gnom"]; },{"../common/adjust_lon":5,"../common/asinz":6}],48:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); exports.init = function() { this.a = 6377397.155; this.es = 0.006674372230614; this.e = Math.sqrt(this.es); if (!this.lat0) { this.lat0 = 0.863937979737193; } if (!this.long0) { this.long0 = 0.7417649320975901 - 0.308341501185665; } /* if scale not set default to 0.9999 */ if (!this.k0) { this.k0 = 0.9999; } this.s45 = 0.785398163397448; /* 45 */ this.s90 = 2 * this.s45; this.fi0 = this.lat0; this.e2 = this.es; this.e = Math.sqrt(this.e2); this.alfa = Math.sqrt(1 + (this.e2 * Math.pow(Math.cos(this.fi0), 4)) / (1 - this.e2)); this.uq = 1.04216856380474; this.u0 = Math.asin(Math.sin(this.fi0) / this.alfa); this.g = Math.pow((1 + this.e * Math.sin(this.fi0)) / (1 - this.e * Math.sin(this.fi0)), this.alfa * this.e / 2); this.k = Math.tan(this.u0 / 2 + this.s45) / Math.pow(Math.tan(this.fi0 / 2 + this.s45), this.alfa) * this.g; this.k1 = this.k0; this.n0 = this.a * Math.sqrt(1 - this.e2) / (1 - this.e2 * Math.pow(Math.sin(this.fi0), 2)); this.s0 = 1.37008346281555; this.n = Math.sin(this.s0); this.ro0 = this.k1 * this.n0 / Math.tan(this.s0); this.ad = this.s90 - this.uq; }; /* ellipsoid */ /* calculate xy from lat/lon */ /* Constants, identical to inverse transform function */ exports.forward = function(p) { var gfi, u, deltav, s, d, eps, ro; var lon = p.x; var lat = p.y; var delta_lon = adjust_lon(lon - this.long0); /* Transformation */ gfi = Math.pow(((1 + this.e * Math.sin(lat)) / (1 - this.e * Math.sin(lat))), (this.alfa * this.e / 2)); u = 2 * (Math.atan(this.k * Math.pow(Math.tan(lat / 2 + this.s45), this.alfa) / gfi) - this.s45); deltav = -delta_lon * this.alfa; s = Math.asin(Math.cos(this.ad) * Math.sin(u) + Math.sin(this.ad) * Math.cos(u) * Math.cos(deltav)); d = Math.asin(Math.cos(u) * Math.sin(deltav) / Math.cos(s)); eps = this.n * d; ro = this.ro0 * Math.pow(Math.tan(this.s0 / 2 + this.s45), this.n) / Math.pow(Math.tan(s / 2 + this.s45), this.n); p.y = ro * Math.cos(eps) / 1; p.x = ro * Math.sin(eps) / 1; if (!this.czech) { p.y *= -1; p.x *= -1; } return (p); }; /* calculate lat/lon from xy */ exports.inverse = function(p) { var u, deltav, s, d, eps, ro, fi1; var ok; /* Transformation */ /* revert y, x*/ var tmp = p.x; p.x = p.y; p.y = tmp; if (!this.czech) { p.y *= -1; p.x *= -1; } ro = Math.sqrt(p.x * p.x + p.y * p.y); eps = Math.atan2(p.y, p.x); d = eps / Math.sin(this.s0); s = 2 * (Math.atan(Math.pow(this.ro0 / ro, 1 / this.n) * Math.tan(this.s0 / 2 + this.s45)) - this.s45); u = Math.asin(Math.cos(this.ad) * Math.sin(s) - Math.sin(this.ad) * Math.cos(s) * Math.cos(d)); deltav = Math.asin(Math.cos(s) * Math.sin(d) / Math.cos(u)); p.x = this.long0 - deltav / this.alfa; fi1 = u; ok = 0; var iter = 0; do { p.y = 2 * (Math.atan(Math.pow(this.k, - 1 / this.alfa) * Math.pow(Math.tan(u / 2 + this.s45), 1 / this.alfa) * Math.pow((1 + this.e * Math.sin(fi1)) / (1 - this.e * Math.sin(fi1)), this.e / 2)) - this.s45); if (Math.abs(fi1 - p.y) < 0.0000000001) { ok = 1; } fi1 = p.y; iter += 1; } while (ok === 0 && iter < 15); if (iter >= 15) { return null; } return (p); }; exports.names = ["Krovak", "krovak"]; },{"../common/adjust_lon":5}],49:[function(_dereq_,module,exports){ var HALF_PI = Math.PI/2; var FORTPI = Math.PI/4; var EPSLN = 1.0e-10; var qsfnz = _dereq_('../common/qsfnz'); var adjust_lon = _dereq_('../common/adjust_lon'); /* reference "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder, The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355. */ exports.S_POLE = 1; exports.N_POLE = 2; exports.EQUIT = 3; exports.OBLIQ = 4; /* Initialize the Lambert Azimuthal Equal Area projection ------------------------------------------------------*/ exports.init = function() { var t = Math.abs(this.lat0); if (Math.abs(t - HALF_PI) < EPSLN) { this.mode = this.lat0 < 0 ? this.S_POLE : this.N_POLE; } else if (Math.abs(t) < EPSLN) { this.mode = this.EQUIT; } else { this.mode = this.OBLIQ; } if (this.es > 0) { var sinphi; this.qp = qsfnz(this.e, 1); this.mmf = 0.5 / (1 - this.es); this.apa = this.authset(this.es); switch (this.mode) { case this.N_POLE: this.dd = 1; break; case this.S_POLE: this.dd = 1; break; case this.EQUIT: this.rq = Math.sqrt(0.5 * this.qp); this.dd = 1 / this.rq; this.xmf = 1; this.ymf = 0.5 * this.qp; break; case this.OBLIQ: this.rq = Math.sqrt(0.5 * this.qp); sinphi = Math.sin(this.lat0); this.sinb1 = qsfnz(this.e, sinphi) / this.qp; this.cosb1 = Math.sqrt(1 - this.sinb1 * this.sinb1); this.dd = Math.cos(this.lat0) / (Math.sqrt(1 - this.es * sinphi * sinphi) * this.rq * this.cosb1); this.ymf = (this.xmf = this.rq) / this.dd; this.xmf *= this.dd; break; } } else { if (this.mode === this.OBLIQ) { this.sinph0 = Math.sin(this.lat0); this.cosph0 = Math.cos(this.lat0); } } }; /* Lambert Azimuthal Equal Area forward equations--mapping lat,long to x,y -----------------------------------------------------------------------*/ exports.forward = function(p) { /* Forward equations -----------------*/ var x, y, coslam, sinlam, sinphi, q, sinb, cosb, b, cosphi; var lam = p.x; var phi = p.y; lam = adjust_lon(lam - this.long0); if (this.sphere) { sinphi = Math.sin(phi); cosphi = Math.cos(phi); coslam = Math.cos(lam); if (this.mode === this.OBLIQ || this.mode === this.EQUIT) { y = (this.mode === this.EQUIT) ? 1 + cosphi * coslam : 1 + this.sinph0 * sinphi + this.cosph0 * cosphi * coslam; if (y <= EPSLN) { return null; } y = Math.sqrt(2 / y); x = y * cosphi * Math.sin(lam); y *= (this.mode === this.EQUIT) ? sinphi : this.cosph0 * sinphi - this.sinph0 * cosphi * coslam; } else if (this.mode === this.N_POLE || this.mode === this.S_POLE) { if (this.mode === this.N_POLE) { coslam = -coslam; } if (Math.abs(phi + this.phi0) < EPSLN) { return null; } y = FORTPI - phi * 0.5; y = 2 * ((this.mode === this.S_POLE) ? Math.cos(y) : Math.sin(y)); x = y * Math.sin(lam); y *= coslam; } } else { sinb = 0; cosb = 0; b = 0; coslam = Math.cos(lam); sinlam = Math.sin(lam); sinphi = Math.sin(phi); q = qsfnz(this.e, sinphi); if (this.mode === this.OBLIQ || this.mode === this.EQUIT) { sinb = q / this.qp; cosb = Math.sqrt(1 - sinb * sinb); } switch (this.mode) { case this.OBLIQ: b = 1 + this.sinb1 * sinb + this.cosb1 * cosb * coslam; break; case this.EQUIT: b = 1 + cosb * coslam; break; case this.N_POLE: b = HALF_PI + phi; q = this.qp - q; break; case this.S_POLE: b = phi - HALF_PI; q = this.qp + q; break; } if (Math.abs(b) < EPSLN) { return null; } switch (this.mode) { case this.OBLIQ: case this.EQUIT: b = Math.sqrt(2 / b); if (this.mode === this.OBLIQ) { y = this.ymf * b * (this.cosb1 * sinb - this.sinb1 * cosb * coslam); } else { y = (b = Math.sqrt(2 / (1 + cosb * coslam))) * sinb * this.ymf; } x = this.xmf * b * cosb * sinlam; break; case this.N_POLE: case this.S_POLE: if (q >= 0) { x = (b = Math.sqrt(q)) * sinlam; y = coslam * ((this.mode === this.S_POLE) ? b : -b); } else { x = y = 0; } break; } } p.x = this.a * x + this.x0; p.y = this.a * y + this.y0; return p; }; /* Inverse equations -----------------*/ exports.inverse = function(p) { p.x -= this.x0; p.y -= this.y0; var x = p.x / this.a; var y = p.y / this.a; var lam, phi, cCe, sCe, q, rho, ab; if (this.sphere) { var cosz = 0, rh, sinz = 0; rh = Math.sqrt(x * x + y * y); phi = rh * 0.5; if (phi > 1) { return null; } phi = 2 * Math.asin(phi); if (this.mode === this.OBLIQ || this.mode === this.EQUIT) { sinz = Math.sin(phi); cosz = Math.cos(phi); } switch (this.mode) { case this.EQUIT: phi = (Math.abs(rh) <= EPSLN) ? 0 : Math.asin(y * sinz / rh); x *= sinz; y = cosz * rh; break; case this.OBLIQ: phi = (Math.abs(rh) <= EPSLN) ? this.phi0 : Math.asin(cosz * this.sinph0 + y * sinz * this.cosph0 / rh); x *= sinz * this.cosph0; y = (cosz - Math.sin(phi) * this.sinph0) * rh; break; case this.N_POLE: y = -y; phi = HALF_PI - phi; break; case this.S_POLE: phi -= HALF_PI; break; } lam = (y === 0 && (this.mode === this.EQUIT || this.mode === this.OBLIQ)) ? 0 : Math.atan2(x, y); } else { ab = 0; if (this.mode === this.OBLIQ || this.mode === this.EQUIT) { x /= this.dd; y *= this.dd; rho = Math.sqrt(x * x + y * y); if (rho < EPSLN) { p.x = 0; p.y = this.phi0; return p; } sCe = 2 * Math.asin(0.5 * rho / this.rq); cCe = Math.cos(sCe); x *= (sCe = Math.sin(sCe)); if (this.mode === this.OBLIQ) { ab = cCe * this.sinb1 + y * sCe * this.cosb1 / rho; q = this.qp * ab; y = rho * this.cosb1 * cCe - y * this.sinb1 * sCe; } else { ab = y * sCe / rho; q = this.qp * ab; y = rho * cCe; } } else if (this.mode === this.N_POLE || this.mode === this.S_POLE) { if (this.mode === this.N_POLE) { y = -y; } q = (x * x + y * y); if (!q) { p.x = 0; p.y = this.phi0; return p; } ab = 1 - q / this.qp; if (this.mode === this.S_POLE) { ab = -ab; } } lam = Math.atan2(x, y); phi = this.authlat(Math.asin(ab), this.apa); } p.x = adjust_lon(this.long0 + lam); p.y = phi; return p; }; /* determine latitude from authalic latitude */ exports.P00 = 0.33333333333333333333; exports.P01 = 0.17222222222222222222; exports.P02 = 0.10257936507936507936; exports.P10 = 0.06388888888888888888; exports.P11 = 0.06640211640211640211; exports.P20 = 0.01641501294219154443; exports.authset = function(es) { var t; var APA = []; APA[0] = es * this.P00; t = es * es; APA[0] += t * this.P01; APA[1] = t * this.P10; t *= es; APA[0] += t * this.P02; APA[1] += t * this.P11; APA[2] = t * this.P20; return APA; }; exports.authlat = function(beta, APA) { var t = beta + beta; return (beta + APA[0] * Math.sin(t) + APA[1] * Math.sin(t + t) + APA[2] * Math.sin(t + t + t)); }; exports.names = ["Lambert Azimuthal Equal Area", "Lambert_Azimuthal_Equal_Area", "laea"]; },{"../common/adjust_lon":5,"../common/qsfnz":20}],50:[function(_dereq_,module,exports){ var EPSLN = 1.0e-10; var msfnz = _dereq_('../common/msfnz'); var tsfnz = _dereq_('../common/tsfnz'); var HALF_PI = Math.PI/2; var sign = _dereq_('../common/sign'); var adjust_lon = _dereq_('../common/adjust_lon'); var phi2z = _dereq_('../common/phi2z'); exports.init = function() { // array of: r_maj,r_min,lat1,lat2,c_lon,c_lat,false_east,false_north //double c_lat; /* center latitude */ //double c_lon; /* center longitude */ //double lat1; /* first standard parallel */ //double lat2; /* second standard parallel */ //double r_maj; /* major axis */ //double r_min; /* minor axis */ //double false_east; /* x offset in meters */ //double false_north; /* y offset in meters */ if (!this.lat2) { this.lat2 = this.lat1; } //if lat2 is not defined if (!this.k0) { this.k0 = 1; } this.x0 = this.x0 || 0; this.y0 = this.y0 || 0; // Standard Parallels cannot be equal and on opposite sides of the equator if (Math.abs(this.lat1 + this.lat2) < EPSLN) { return; } var temp = this.b / this.a; this.e = Math.sqrt(1 - temp * temp); var sin1 = Math.sin(this.lat1); var cos1 = Math.cos(this.lat1); var ms1 = msfnz(this.e, sin1, cos1); var ts1 = tsfnz(this.e, this.lat1, sin1); var sin2 = Math.sin(this.lat2); var cos2 = Math.cos(this.lat2); var ms2 = msfnz(this.e, sin2, cos2); var ts2 = tsfnz(this.e, this.lat2, sin2); var ts0 = tsfnz(this.e, this.lat0, Math.sin(this.lat0)); if (Math.abs(this.lat1 - this.lat2) > EPSLN) { this.ns = Math.log(ms1 / ms2) / Math.log(ts1 / ts2); } else { this.ns = sin1; } if (isNaN(this.ns)) { this.ns = sin1; } this.f0 = ms1 / (this.ns * Math.pow(ts1, this.ns)); this.rh = this.a * this.f0 * Math.pow(ts0, this.ns); if (!this.title) { this.title = "Lambert Conformal Conic"; } }; // Lambert Conformal conic forward equations--mapping lat,long to x,y // ----------------------------------------------------------------- exports.forward = function(p) { var lon = p.x; var lat = p.y; // singular cases : if (Math.abs(2 * Math.abs(lat) - Math.PI) <= EPSLN) { lat = sign(lat) * (HALF_PI - 2 * EPSLN); } var con = Math.abs(Math.abs(lat) - HALF_PI); var ts, rh1; if (con > EPSLN) { ts = tsfnz(this.e, lat, Math.sin(lat)); rh1 = this.a * this.f0 * Math.pow(ts, this.ns); } else { con = lat * this.ns; if (con <= 0) { return null; } rh1 = 0; } var theta = this.ns * adjust_lon(lon - this.long0); p.x = this.k0 * (rh1 * Math.sin(theta)) + this.x0; p.y = this.k0 * (this.rh - rh1 * Math.cos(theta)) + this.y0; return p; }; // Lambert Conformal Conic inverse equations--mapping x,y to lat/long // ----------------------------------------------------------------- exports.inverse = function(p) { var rh1, con, ts; var lat, lon; var x = (p.x - this.x0) / this.k0; var y = (this.rh - (p.y - this.y0) / this.k0); if (this.ns > 0) { rh1 = Math.sqrt(x * x + y * y); con = 1; } else { rh1 = -Math.sqrt(x * x + y * y); con = -1; } var theta = 0; if (rh1 !== 0) { theta = Math.atan2((con * x), (con * y)); } if ((rh1 !== 0) || (this.ns > 0)) { con = 1 / this.ns; ts = Math.pow((rh1 / (this.a * this.f0)), con); lat = phi2z(this.e, ts); if (lat === -9999) { return null; } } else { lat = -HALF_PI; } lon = adjust_lon(theta / this.ns + this.long0); p.x = lon; p.y = lat; return p; }; exports.names = ["Lambert Tangential Conformal Conic Projection", "Lambert_Conformal_Conic", "Lambert_Conformal_Conic_2SP", "lcc"]; },{"../common/adjust_lon":5,"../common/msfnz":15,"../common/phi2z":16,"../common/sign":21,"../common/tsfnz":24}],51:[function(_dereq_,module,exports){ exports.init = function() { //no-op for longlat }; function identity(pt) { return pt; } exports.forward = identity; exports.inverse = identity; exports.names = ["longlat", "identity"]; },{}],52:[function(_dereq_,module,exports){ var msfnz = _dereq_('../common/msfnz'); var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; var R2D = 57.29577951308232088; var adjust_lon = _dereq_('../common/adjust_lon'); var FORTPI = Math.PI/4; var tsfnz = _dereq_('../common/tsfnz'); var phi2z = _dereq_('../common/phi2z'); exports.init = function() { var con = this.b / this.a; this.es = 1 - con * con; if(!('x0' in this)){ this.x0 = 0; } if(!('y0' in this)){ this.y0 = 0; } this.e = Math.sqrt(this.es); if (this.lat_ts) { if (this.sphere) { this.k0 = Math.cos(this.lat_ts); } else { this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)); } } else { if (!this.k0) { if (this.k) { this.k0 = this.k; } else { this.k0 = 1; } } } }; /* Mercator forward equations--mapping lat,long to x,y --------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; // convert to radians if (lat * R2D > 90 && lat * R2D < -90 && lon * R2D > 180 && lon * R2D < -180) { return null; } var x, y; if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) { return null; } else { if (this.sphere) { x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0); y = this.y0 + this.a * this.k0 * Math.log(Math.tan(FORTPI + 0.5 * lat)); } else { var sinphi = Math.sin(lat); var ts = tsfnz(this.e, lat, sinphi); x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0); y = this.y0 - this.a * this.k0 * Math.log(ts); } p.x = x; p.y = y; return p; } }; /* Mercator inverse equations--mapping x,y to lat/long --------------------------------------------------*/ exports.inverse = function(p) { var x = p.x - this.x0; var y = p.y - this.y0; var lon, lat; if (this.sphere) { lat = HALF_PI - 2 * Math.atan(Math.exp(-y / (this.a * this.k0))); } else { var ts = Math.exp(-y / (this.a * this.k0)); lat = phi2z(this.e, ts); if (lat === -9999) { return null; } } lon = adjust_lon(this.long0 + x / (this.a * this.k0)); p.x = lon; p.y = lat; return p; }; exports.names = ["Mercator", "Popular Visualisation Pseudo Mercator", "Mercator_1SP", "Mercator_Auxiliary_Sphere", "merc"]; },{"../common/adjust_lon":5,"../common/msfnz":15,"../common/phi2z":16,"../common/tsfnz":24}],53:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); /* reference "New Equal-Area Map Projections for Noncircular Regions", John P. Snyder, The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355. */ /* Initialize the Miller Cylindrical projection -------------------------------------------*/ exports.init = function() { //no-op }; /* Miller Cylindrical forward equations--mapping lat,long to x,y ------------------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; /* Forward equations -----------------*/ var dlon = adjust_lon(lon - this.long0); var x = this.x0 + this.a * dlon; var y = this.y0 + this.a * Math.log(Math.tan((Math.PI / 4) + (lat / 2.5))) * 1.25; p.x = x; p.y = y; return p; }; /* Miller Cylindrical inverse equations--mapping x,y to lat/long ------------------------------------------------------------*/ exports.inverse = function(p) { p.x -= this.x0; p.y -= this.y0; var lon = adjust_lon(this.long0 + p.x / this.a); var lat = 2.5 * (Math.atan(Math.exp(0.8 * p.y / this.a)) - Math.PI / 4); p.x = lon; p.y = lat; return p; }; exports.names = ["Miller_Cylindrical", "mill"]; },{"../common/adjust_lon":5}],54:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var EPSLN = 1.0e-10; exports.init = function() {}; /* Mollweide forward equations--mapping lat,long to x,y ----------------------------------------------------*/ exports.forward = function(p) { /* Forward equations -----------------*/ var lon = p.x; var lat = p.y; var delta_lon = adjust_lon(lon - this.long0); var theta = lat; var con = Math.PI * Math.sin(lat); /* Iterate using the Newton-Raphson method to find theta -----------------------------------------------------*/ for (var i = 0; true; i++) { var delta_theta = -(theta + Math.sin(theta) - con) / (1 + Math.cos(theta)); theta += delta_theta; if (Math.abs(delta_theta) < EPSLN) { break; } } theta /= 2; /* If the latitude is 90 deg, force the x coordinate to be "0 + false easting" this is done here because of precision problems with "cos(theta)" --------------------------------------------------------------------------*/ if (Math.PI / 2 - Math.abs(lat) < EPSLN) { delta_lon = 0; } var x = 0.900316316158 * this.a * delta_lon * Math.cos(theta) + this.x0; var y = 1.4142135623731 * this.a * Math.sin(theta) + this.y0; p.x = x; p.y = y; return p; }; exports.inverse = function(p) { var theta; var arg; /* Inverse equations -----------------*/ p.x -= this.x0; p.y -= this.y0; arg = p.y / (1.4142135623731 * this.a); /* Because of division by zero problems, 'arg' can not be 1. Therefore a number very close to one is used instead. -------------------------------------------------------------------*/ if (Math.abs(arg) > 0.999999999999) { arg = 0.999999999999; } theta = Math.asin(arg); var lon = adjust_lon(this.long0 + (p.x / (0.900316316158 * this.a * Math.cos(theta)))); if (lon < (-Math.PI)) { lon = -Math.PI; } if (lon > Math.PI) { lon = Math.PI; } arg = (2 * theta + Math.sin(2 * theta)) / Math.PI; if (Math.abs(arg) > 1) { arg = 1; } var lat = Math.asin(arg); p.x = lon; p.y = lat; return p; }; exports.names = ["Mollweide", "moll"]; },{"../common/adjust_lon":5}],55:[function(_dereq_,module,exports){ var SEC_TO_RAD = 4.84813681109535993589914102357e-6; /* reference Department of Land and Survey Technical Circular 1973/32 http://www.linz.govt.nz/docs/miscellaneous/nz-map-definition.pdf OSG Technical Report 4.1 http://www.linz.govt.nz/docs/miscellaneous/nzmg.pdf */ /** * iterations: Number of iterations to refine inverse transform. * 0 -> km accuracy * 1 -> m accuracy -- suitable for most mapping applications * 2 -> mm accuracy */ exports.iterations = 1; exports.init = function() { this.A = []; this.A[1] = 0.6399175073; this.A[2] = -0.1358797613; this.A[3] = 0.063294409; this.A[4] = -0.02526853; this.A[5] = 0.0117879; this.A[6] = -0.0055161; this.A[7] = 0.0026906; this.A[8] = -0.001333; this.A[9] = 0.00067; this.A[10] = -0.00034; this.B_re = []; this.B_im = []; this.B_re[1] = 0.7557853228; this.B_im[1] = 0; this.B_re[2] = 0.249204646; this.B_im[2] = 0.003371507; this.B_re[3] = -0.001541739; this.B_im[3] = 0.041058560; this.B_re[4] = -0.10162907; this.B_im[4] = 0.01727609; this.B_re[5] = -0.26623489; this.B_im[5] = -0.36249218; this.B_re[6] = -0.6870983; this.B_im[6] = -1.1651967; this.C_re = []; this.C_im = []; this.C_re[1] = 1.3231270439; this.C_im[1] = 0; this.C_re[2] = -0.577245789; this.C_im[2] = -0.007809598; this.C_re[3] = 0.508307513; this.C_im[3] = -0.112208952; this.C_re[4] = -0.15094762; this.C_im[4] = 0.18200602; this.C_re[5] = 1.01418179; this.C_im[5] = 1.64497696; this.C_re[6] = 1.9660549; this.C_im[6] = 2.5127645; this.D = []; this.D[1] = 1.5627014243; this.D[2] = 0.5185406398; this.D[3] = -0.03333098; this.D[4] = -0.1052906; this.D[5] = -0.0368594; this.D[6] = 0.007317; this.D[7] = 0.01220; this.D[8] = 0.00394; this.D[9] = -0.0013; }; /** New Zealand Map Grid Forward - long/lat to x/y long/lat in radians */ exports.forward = function(p) { var n; var lon = p.x; var lat = p.y; var delta_lat = lat - this.lat0; var delta_lon = lon - this.long0; // 1. Calculate d_phi and d_psi ... // and d_lambda // For this algorithm, delta_latitude is in seconds of arc x 10-5, so we need to scale to those units. Longitude is radians. var d_phi = delta_lat / SEC_TO_RAD * 1E-5; var d_lambda = delta_lon; var d_phi_n = 1; // d_phi^0 var d_psi = 0; for (n = 1; n <= 10; n++) { d_phi_n = d_phi_n * d_phi; d_psi = d_psi + this.A[n] * d_phi_n; } // 2. Calculate theta var th_re = d_psi; var th_im = d_lambda; // 3. Calculate z var th_n_re = 1; var th_n_im = 0; // theta^0 var th_n_re1; var th_n_im1; var z_re = 0; var z_im = 0; for (n = 1; n <= 6; n++) { th_n_re1 = th_n_re * th_re - th_n_im * th_im; th_n_im1 = th_n_im * th_re + th_n_re * th_im; th_n_re = th_n_re1; th_n_im = th_n_im1; z_re = z_re + this.B_re[n] * th_n_re - this.B_im[n] * th_n_im; z_im = z_im + this.B_im[n] * th_n_re + this.B_re[n] * th_n_im; } // 4. Calculate easting and northing p.x = (z_im * this.a) + this.x0; p.y = (z_re * this.a) + this.y0; return p; }; /** New Zealand Map Grid Inverse - x/y to long/lat */ exports.inverse = function(p) { var n; var x = p.x; var y = p.y; var delta_x = x - this.x0; var delta_y = y - this.y0; // 1. Calculate z var z_re = delta_y / this.a; var z_im = delta_x / this.a; // 2a. Calculate theta - first approximation gives km accuracy var z_n_re = 1; var z_n_im = 0; // z^0 var z_n_re1; var z_n_im1; var th_re = 0; var th_im = 0; for (n = 1; n <= 6; n++) { z_n_re1 = z_n_re * z_re - z_n_im * z_im; z_n_im1 = z_n_im * z_re + z_n_re * z_im; z_n_re = z_n_re1; z_n_im = z_n_im1; th_re = th_re + this.C_re[n] * z_n_re - this.C_im[n] * z_n_im; th_im = th_im + this.C_im[n] * z_n_re + this.C_re[n] * z_n_im; } // 2b. Iterate to refine the accuracy of the calculation // 0 iterations gives km accuracy // 1 iteration gives m accuracy -- good enough for most mapping applications // 2 iterations bives mm accuracy for (var i = 0; i < this.iterations; i++) { var th_n_re = th_re; var th_n_im = th_im; var th_n_re1; var th_n_im1; var num_re = z_re; var num_im = z_im; for (n = 2; n <= 6; n++) { th_n_re1 = th_n_re * th_re - th_n_im * th_im; th_n_im1 = th_n_im * th_re + th_n_re * th_im; th_n_re = th_n_re1; th_n_im = th_n_im1; num_re = num_re + (n - 1) * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im); num_im = num_im + (n - 1) * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im); } th_n_re = 1; th_n_im = 0; var den_re = this.B_re[1]; var den_im = this.B_im[1]; for (n = 2; n <= 6; n++) { th_n_re1 = th_n_re * th_re - th_n_im * th_im; th_n_im1 = th_n_im * th_re + th_n_re * th_im; th_n_re = th_n_re1; th_n_im = th_n_im1; den_re = den_re + n * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im); den_im = den_im + n * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im); } // Complex division var den2 = den_re * den_re + den_im * den_im; th_re = (num_re * den_re + num_im * den_im) / den2; th_im = (num_im * den_re - num_re * den_im) / den2; } // 3. Calculate d_phi ... // and d_lambda var d_psi = th_re; var d_lambda = th_im; var d_psi_n = 1; // d_psi^0 var d_phi = 0; for (n = 1; n <= 9; n++) { d_psi_n = d_psi_n * d_psi; d_phi = d_phi + this.D[n] * d_psi_n; } // 4. Calculate latitude and longitude // d_phi is calcuated in second of arc * 10^-5, so we need to scale back to radians. d_lambda is in radians. var lat = this.lat0 + (d_phi * SEC_TO_RAD * 1E5); var lon = this.long0 + d_lambda; p.x = lon; p.y = lat; return p; }; exports.names = ["New_Zealand_Map_Grid", "nzmg"]; },{}],56:[function(_dereq_,module,exports){ var tsfnz = _dereq_('../common/tsfnz'); var adjust_lon = _dereq_('../common/adjust_lon'); var phi2z = _dereq_('../common/phi2z'); var HALF_PI = Math.PI/2; var FORTPI = Math.PI/4; var EPSLN = 1.0e-10; /* Initialize the Oblique Mercator projection ------------------------------------------*/ exports.init = function() { this.no_off = this.no_off || false; this.no_rot = this.no_rot || false; if (isNaN(this.k0)) { this.k0 = 1; } var sinlat = Math.sin(this.lat0); var coslat = Math.cos(this.lat0); var con = this.e * sinlat; this.bl = Math.sqrt(1 + this.es / (1 - this.es) * Math.pow(coslat, 4)); this.al = this.a * this.bl * this.k0 * Math.sqrt(1 - this.es) / (1 - con * con); var t0 = tsfnz(this.e, this.lat0, sinlat); var dl = this.bl / coslat * Math.sqrt((1 - this.es) / (1 - con * con)); if (dl * dl < 1) { dl = 1; } var fl; var gl; if (!isNaN(this.longc)) { //Central point and azimuth method if (this.lat0 >= 0) { fl = dl + Math.sqrt(dl * dl - 1); } else { fl = dl - Math.sqrt(dl * dl - 1); } this.el = fl * Math.pow(t0, this.bl); gl = 0.5 * (fl - 1 / fl); this.gamma0 = Math.asin(Math.sin(this.alpha) / dl); this.long0 = this.longc - Math.asin(gl * Math.tan(this.gamma0)) / this.bl; } else { //2 points method var t1 = tsfnz(this.e, this.lat1, Math.sin(this.lat1)); var t2 = tsfnz(this.e, this.lat2, Math.sin(this.lat2)); if (this.lat0 >= 0) { this.el = (dl + Math.sqrt(dl * dl - 1)) * Math.pow(t0, this.bl); } else { this.el = (dl - Math.sqrt(dl * dl - 1)) * Math.pow(t0, this.bl); } var hl = Math.pow(t1, this.bl); var ll = Math.pow(t2, this.bl); fl = this.el / hl; gl = 0.5 * (fl - 1 / fl); var jl = (this.el * this.el - ll * hl) / (this.el * this.el + ll * hl); var pl = (ll - hl) / (ll + hl); var dlon12 = adjust_lon(this.long1 - this.long2); this.long0 = 0.5 * (this.long1 + this.long2) - Math.atan(jl * Math.tan(0.5 * this.bl * (dlon12)) / pl) / this.bl; this.long0 = adjust_lon(this.long0); var dlon10 = adjust_lon(this.long1 - this.long0); this.gamma0 = Math.atan(Math.sin(this.bl * (dlon10)) / gl); this.alpha = Math.asin(dl * Math.sin(this.gamma0)); } if (this.no_off) { this.uc = 0; } else { if (this.lat0 >= 0) { this.uc = this.al / this.bl * Math.atan2(Math.sqrt(dl * dl - 1), Math.cos(this.alpha)); } else { this.uc = -1 * this.al / this.bl * Math.atan2(Math.sqrt(dl * dl - 1), Math.cos(this.alpha)); } } }; /* Oblique Mercator forward equations--mapping lat,long to x,y ----------------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; var dlon = adjust_lon(lon - this.long0); var us, vs; var con; if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) { if (lat > 0) { con = -1; } else { con = 1; } vs = this.al / this.bl * Math.log(Math.tan(FORTPI + con * this.gamma0 * 0.5)); us = -1 * con * HALF_PI * this.al / this.bl; } else { var t = tsfnz(this.e, lat, Math.sin(lat)); var ql = this.el / Math.pow(t, this.bl); var sl = 0.5 * (ql - 1 / ql); var tl = 0.5 * (ql + 1 / ql); var vl = Math.sin(this.bl * (dlon)); var ul = (sl * Math.sin(this.gamma0) - vl * Math.cos(this.gamma0)) / tl; if (Math.abs(Math.abs(ul) - 1) <= EPSLN) { vs = Number.POSITIVE_INFINITY; } else { vs = 0.5 * this.al * Math.log((1 - ul) / (1 + ul)) / this.bl; } if (Math.abs(Math.cos(this.bl * (dlon))) <= EPSLN) { us = this.al * this.bl * (dlon); } else { us = this.al * Math.atan2(sl * Math.cos(this.gamma0) + vl * Math.sin(this.gamma0), Math.cos(this.bl * dlon)) / this.bl; } } if (this.no_rot) { p.x = this.x0 + us; p.y = this.y0 + vs; } else { us -= this.uc; p.x = this.x0 + vs * Math.cos(this.alpha) + us * Math.sin(this.alpha); p.y = this.y0 + us * Math.cos(this.alpha) - vs * Math.sin(this.alpha); } return p; }; exports.inverse = function(p) { var us, vs; if (this.no_rot) { vs = p.y - this.y0; us = p.x - this.x0; } else { vs = (p.x - this.x0) * Math.cos(this.alpha) - (p.y - this.y0) * Math.sin(this.alpha); us = (p.y - this.y0) * Math.cos(this.alpha) + (p.x - this.x0) * Math.sin(this.alpha); us += this.uc; } var qp = Math.exp(-1 * this.bl * vs / this.al); var sp = 0.5 * (qp - 1 / qp); var tp = 0.5 * (qp + 1 / qp); var vp = Math.sin(this.bl * us / this.al); var up = (vp * Math.cos(this.gamma0) + sp * Math.sin(this.gamma0)) / tp; var ts = Math.pow(this.el / Math.sqrt((1 + up) / (1 - up)), 1 / this.bl); if (Math.abs(up - 1) < EPSLN) { p.x = this.long0; p.y = HALF_PI; } else if (Math.abs(up + 1) < EPSLN) { p.x = this.long0; p.y = -1 * HALF_PI; } else { p.y = phi2z(this.e, ts); p.x = adjust_lon(this.long0 - Math.atan2(sp * Math.cos(this.gamma0) - vp * Math.sin(this.gamma0), Math.cos(this.bl * us / this.al)) / this.bl); } return p; }; exports.names = ["Hotine_Oblique_Mercator", "Hotine Oblique Mercator", "Hotine_Oblique_Mercator_Azimuth_Natural_Origin", "Hotine_Oblique_Mercator_Azimuth_Center", "omerc"]; },{"../common/adjust_lon":5,"../common/phi2z":16,"../common/tsfnz":24}],57:[function(_dereq_,module,exports){ var e0fn = _dereq_('../common/e0fn'); var e1fn = _dereq_('../common/e1fn'); var e2fn = _dereq_('../common/e2fn'); var e3fn = _dereq_('../common/e3fn'); var adjust_lon = _dereq_('../common/adjust_lon'); var adjust_lat = _dereq_('../common/adjust_lat'); var mlfn = _dereq_('../common/mlfn'); var EPSLN = 1.0e-10; var gN = _dereq_('../common/gN'); var MAX_ITER = 20; exports.init = function() { /* Place parameters in static storage for common use -------------------------------------------------*/ this.temp = this.b / this.a; this.es = 1 - Math.pow(this.temp, 2); // devait etre dans tmerc.js mais n y est pas donc je commente sinon retour de valeurs nulles this.e = Math.sqrt(this.es); this.e0 = e0fn(this.es); this.e1 = e1fn(this.es); this.e2 = e2fn(this.es); this.e3 = e3fn(this.es); this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); //si que des zeros le calcul ne se fait pas }; /* Polyconic forward equations--mapping lat,long to x,y ---------------------------------------------------*/ exports.forward = function(p) { var lon = p.x; var lat = p.y; var x, y, el; var dlon = adjust_lon(lon - this.long0); el = dlon * Math.sin(lat); if (this.sphere) { if (Math.abs(lat) <= EPSLN) { x = this.a * dlon; y = -1 * this.a * this.lat0; } else { x = this.a * Math.sin(el) / Math.tan(lat); y = this.a * (adjust_lat(lat - this.lat0) + (1 - Math.cos(el)) / Math.tan(lat)); } } else { if (Math.abs(lat) <= EPSLN) { x = this.a * dlon; y = -1 * this.ml0; } else { var nl = gN(this.a, this.e, Math.sin(lat)) / Math.tan(lat); x = nl * Math.sin(el); y = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat) - this.ml0 + nl * (1 - Math.cos(el)); } } p.x = x + this.x0; p.y = y + this.y0; return p; }; /* Inverse equations -----------------*/ exports.inverse = function(p) { var lon, lat, x, y, i; var al, bl; var phi, dphi; x = p.x - this.x0; y = p.y - this.y0; if (this.sphere) { if (Math.abs(y + this.a * this.lat0) <= EPSLN) { lon = adjust_lon(x / this.a + this.long0); lat = 0; } else { al = this.lat0 + y / this.a; bl = x * x / this.a / this.a + al * al; phi = al; var tanphi; for (i = MAX_ITER; i; --i) { tanphi = Math.tan(phi); dphi = -1 * (al * (phi * tanphi + 1) - phi - 0.5 * (phi * phi + bl) * tanphi) / ((phi - al) / tanphi - 1); phi += dphi; if (Math.abs(dphi) <= EPSLN) { lat = phi; break; } } lon = adjust_lon(this.long0 + (Math.asin(x * Math.tan(phi) / this.a)) / Math.sin(lat)); } } else { if (Math.abs(y + this.ml0) <= EPSLN) { lat = 0; lon = adjust_lon(this.long0 + x / this.a); } else { al = (this.ml0 + y) / this.a; bl = x * x / this.a / this.a + al * al; phi = al; var cl, mln, mlnp, ma; var con; for (i = MAX_ITER; i; --i) { con = this.e * Math.sin(phi); cl = Math.sqrt(1 - con * con) * Math.tan(phi); mln = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi); mlnp = this.e0 - 2 * this.e1 * Math.cos(2 * phi) + 4 * this.e2 * Math.cos(4 * phi) - 6 * this.e3 * Math.cos(6 * phi); ma = mln / this.a; dphi = (al * (cl * ma + 1) - ma - 0.5 * cl * (ma * ma + bl)) / (this.es * Math.sin(2 * phi) * (ma * ma + bl - 2 * al * ma) / (4 * cl) + (al - ma) * (cl * mlnp - 2 / Math.sin(2 * phi)) - mlnp); phi -= dphi; if (Math.abs(dphi) <= EPSLN) { lat = phi; break; } } //lat=phi4z(this.e,this.e0,this.e1,this.e2,this.e3,al,bl,0,0); cl = Math.sqrt(1 - this.es * Math.pow(Math.sin(lat), 2)) * Math.tan(lat); lon = adjust_lon(this.long0 + Math.asin(x * cl / this.a) / Math.sin(lat)); } } p.x = lon; p.y = lat; return p; }; exports.names = ["Polyconic", "poly"]; },{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/gN":11,"../common/mlfn":14}],58:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var adjust_lat = _dereq_('../common/adjust_lat'); var pj_enfn = _dereq_('../common/pj_enfn'); var MAX_ITER = 20; var pj_mlfn = _dereq_('../common/pj_mlfn'); var pj_inv_mlfn = _dereq_('../common/pj_inv_mlfn'); var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; var asinz = _dereq_('../common/asinz'); exports.init = function() { /* Place parameters in static storage for common use -------------------------------------------------*/ if (!this.sphere) { this.en = pj_enfn(this.es); } else { this.n = 1; this.m = 0; this.es = 0; this.C_y = Math.sqrt((this.m + 1) / this.n); this.C_x = this.C_y / (this.m + 1); } }; /* Sinusoidal forward equations--mapping lat,long to x,y -----------------------------------------------------*/ exports.forward = function(p) { var x, y; var lon = p.x; var lat = p.y; /* Forward equations -----------------*/ lon = adjust_lon(lon - this.long0); if (this.sphere) { if (!this.m) { lat = this.n !== 1 ? Math.asin(this.n * Math.sin(lat)) : lat; } else { var k = this.n * Math.sin(lat); for (var i = MAX_ITER; i; --i) { var V = (this.m * lat + Math.sin(lat) - k) / (this.m + Math.cos(lat)); lat -= V; if (Math.abs(V) < EPSLN) { break; } } } x = this.a * this.C_x * lon * (this.m + Math.cos(lat)); y = this.a * this.C_y * lat; } else { var s = Math.sin(lat); var c = Math.cos(lat); y = this.a * pj_mlfn(lat, s, c, this.en); x = this.a * lon * c / Math.sqrt(1 - this.es * s * s); } p.x = x; p.y = y; return p; }; exports.inverse = function(p) { var lat, temp, lon, s; p.x -= this.x0; lon = p.x / this.a; p.y -= this.y0; lat = p.y / this.a; if (this.sphere) { lat /= this.C_y; lon = lon / (this.C_x * (this.m + Math.cos(lat))); if (this.m) { lat = asinz((this.m * lat + Math.sin(lat)) / this.n); } else if (this.n !== 1) { lat = asinz(Math.sin(lat) / this.n); } lon = adjust_lon(lon + this.long0); lat = adjust_lat(lat); } else { lat = pj_inv_mlfn(p.y / this.a, this.es, this.en); s = Math.abs(lat); if (s < HALF_PI) { s = Math.sin(lat); temp = this.long0 + p.x * Math.sqrt(1 - this.es * s * s) / (this.a * Math.cos(lat)); //temp = this.long0 + p.x / (this.a * Math.cos(lat)); lon = adjust_lon(temp); } else if ((s - EPSLN) < HALF_PI) { lon = this.long0; } } p.x = lon; p.y = lat; return p; }; exports.names = ["Sinusoidal", "sinu"]; },{"../common/adjust_lat":4,"../common/adjust_lon":5,"../common/asinz":6,"../common/pj_enfn":17,"../common/pj_inv_mlfn":18,"../common/pj_mlfn":19}],59:[function(_dereq_,module,exports){ /* references: Formules et constantes pour le Calcul pour la projection cylindrique conforme à axe oblique et pour la transformation entre des systèmes de référence. http://www.swisstopo.admin.ch/internet/swisstopo/fr/home/topics/survey/sys/refsys/switzerland.parsysrelated1.31216.downloadList.77004.DownloadFile.tmp/swissprojectionfr.pdf */ exports.init = function() { var phy0 = this.lat0; this.lambda0 = this.long0; var sinPhy0 = Math.sin(phy0); var semiMajorAxis = this.a; var invF = this.rf; var flattening = 1 / invF; var e2 = 2 * flattening - Math.pow(flattening, 2); var e = this.e = Math.sqrt(e2); this.R = this.k0 * semiMajorAxis * Math.sqrt(1 - e2) / (1 - e2 * Math.pow(sinPhy0, 2)); this.alpha = Math.sqrt(1 + e2 / (1 - e2) * Math.pow(Math.cos(phy0), 4)); this.b0 = Math.asin(sinPhy0 / this.alpha); var k1 = Math.log(Math.tan(Math.PI / 4 + this.b0 / 2)); var k2 = Math.log(Math.tan(Math.PI / 4 + phy0 / 2)); var k3 = Math.log((1 + e * sinPhy0) / (1 - e * sinPhy0)); this.K = k1 - this.alpha * k2 + this.alpha * e / 2 * k3; }; exports.forward = function(p) { var Sa1 = Math.log(Math.tan(Math.PI / 4 - p.y / 2)); var Sa2 = this.e / 2 * Math.log((1 + this.e * Math.sin(p.y)) / (1 - this.e * Math.sin(p.y))); var S = -this.alpha * (Sa1 + Sa2) + this.K; // spheric latitude var b = 2 * (Math.atan(Math.exp(S)) - Math.PI / 4); // spheric longitude var I = this.alpha * (p.x - this.lambda0); // psoeudo equatorial rotation var rotI = Math.atan(Math.sin(I) / (Math.sin(this.b0) * Math.tan(b) + Math.cos(this.b0) * Math.cos(I))); var rotB = Math.asin(Math.cos(this.b0) * Math.sin(b) - Math.sin(this.b0) * Math.cos(b) * Math.cos(I)); p.y = this.R / 2 * Math.log((1 + Math.sin(rotB)) / (1 - Math.sin(rotB))) + this.y0; p.x = this.R * rotI + this.x0; return p; }; exports.inverse = function(p) { var Y = p.x - this.x0; var X = p.y - this.y0; var rotI = Y / this.R; var rotB = 2 * (Math.atan(Math.exp(X / this.R)) - Math.PI / 4); var b = Math.asin(Math.cos(this.b0) * Math.sin(rotB) + Math.sin(this.b0) * Math.cos(rotB) * Math.cos(rotI)); var I = Math.atan(Math.sin(rotI) / (Math.cos(this.b0) * Math.cos(rotI) - Math.sin(this.b0) * Math.tan(rotB))); var lambda = this.lambda0 + I / this.alpha; var S = 0; var phy = b; var prevPhy = -1000; var iteration = 0; while (Math.abs(phy - prevPhy) > 0.0000001) { if (++iteration > 20) { //...reportError("omercFwdInfinity"); return; } //S = Math.log(Math.tan(Math.PI / 4 + phy / 2)); S = 1 / this.alpha * (Math.log(Math.tan(Math.PI / 4 + b / 2)) - this.K) + this.e * Math.log(Math.tan(Math.PI / 4 + Math.asin(this.e * Math.sin(phy)) / 2)); prevPhy = phy; phy = 2 * Math.atan(Math.exp(S)) - Math.PI / 2; } p.x = lambda; p.y = phy; return p; }; exports.names = ["somerc"]; },{}],60:[function(_dereq_,module,exports){ var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; var sign = _dereq_('../common/sign'); var msfnz = _dereq_('../common/msfnz'); var tsfnz = _dereq_('../common/tsfnz'); var phi2z = _dereq_('../common/phi2z'); var adjust_lon = _dereq_('../common/adjust_lon'); exports.ssfn_ = function(phit, sinphi, eccen) { sinphi *= eccen; return (Math.tan(0.5 * (HALF_PI + phit)) * Math.pow((1 - sinphi) / (1 + sinphi), 0.5 * eccen)); }; exports.init = function() { this.coslat0 = Math.cos(this.lat0); this.sinlat0 = Math.sin(this.lat0); if (this.sphere) { if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) { this.k0 = 0.5 * (1 + sign(this.lat0) * Math.sin(this.lat_ts)); } } else { if (Math.abs(this.coslat0) <= EPSLN) { if (this.lat0 > 0) { //North pole //trace('stere:north pole'); this.con = 1; } else { //South pole //trace('stere:south pole'); this.con = -1; } } this.cons = Math.sqrt(Math.pow(1 + this.e, 1 + this.e) * Math.pow(1 - this.e, 1 - this.e)); if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) { this.k0 = 0.5 * this.cons * msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)) / tsfnz(this.e, this.con * this.lat_ts, this.con * Math.sin(this.lat_ts)); } this.ms1 = msfnz(this.e, this.sinlat0, this.coslat0); this.X0 = 2 * Math.atan(this.ssfn_(this.lat0, this.sinlat0, this.e)) - HALF_PI; this.cosX0 = Math.cos(this.X0); this.sinX0 = Math.sin(this.X0); } }; // Stereographic forward equations--mapping lat,long to x,y exports.forward = function(p) { var lon = p.x; var lat = p.y; var sinlat = Math.sin(lat); var coslat = Math.cos(lat); var A, X, sinX, cosX, ts, rh; var dlon = adjust_lon(lon - this.long0); if (Math.abs(Math.abs(lon - this.long0) - Math.PI) <= EPSLN && Math.abs(lat + this.lat0) <= EPSLN) { //case of the origine point //trace('stere:this is the origin point'); p.x = NaN; p.y = NaN; return p; } if (this.sphere) { //trace('stere:sphere case'); A = 2 * this.k0 / (1 + this.sinlat0 * sinlat + this.coslat0 * coslat * Math.cos(dlon)); p.x = this.a * A * coslat * Math.sin(dlon) + this.x0; p.y = this.a * A * (this.coslat0 * sinlat - this.sinlat0 * coslat * Math.cos(dlon)) + this.y0; return p; } else { X = 2 * Math.atan(this.ssfn_(lat, sinlat, this.e)) - HALF_PI; cosX = Math.cos(X); sinX = Math.sin(X); if (Math.abs(this.coslat0) <= EPSLN) { ts = tsfnz(this.e, lat * this.con, this.con * sinlat); rh = 2 * this.a * this.k0 * ts / this.cons; p.x = this.x0 + rh * Math.sin(lon - this.long0); p.y = this.y0 - this.con * rh * Math.cos(lon - this.long0); //trace(p.toString()); return p; } else if (Math.abs(this.sinlat0) < EPSLN) { //Eq //trace('stere:equateur'); A = 2 * this.a * this.k0 / (1 + cosX * Math.cos(dlon)); p.y = A * sinX; } else { //other case //trace('stere:normal case'); A = 2 * this.a * this.k0 * this.ms1 / (this.cosX0 * (1 + this.sinX0 * sinX + this.cosX0 * cosX * Math.cos(dlon))); p.y = A * (this.cosX0 * sinX - this.sinX0 * cosX * Math.cos(dlon)) + this.y0; } p.x = A * cosX * Math.sin(dlon) + this.x0; } //trace(p.toString()); return p; }; //* Stereographic inverse equations--mapping x,y to lat/long exports.inverse = function(p) { p.x -= this.x0; p.y -= this.y0; var lon, lat, ts, ce, Chi; var rh = Math.sqrt(p.x * p.x + p.y * p.y); if (this.sphere) { var c = 2 * Math.atan(rh / (0.5 * this.a * this.k0)); lon = this.long0; lat = this.lat0; if (rh <= EPSLN) { p.x = lon; p.y = lat; return p; } lat = Math.asin(Math.cos(c) * this.sinlat0 + p.y * Math.sin(c) * this.coslat0 / rh); if (Math.abs(this.coslat0) < EPSLN) { if (this.lat0 > 0) { lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y)); } else { lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y)); } } else { lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(c), rh * this.coslat0 * Math.cos(c) - p.y * this.sinlat0 * Math.sin(c))); } p.x = lon; p.y = lat; return p; } else { if (Math.abs(this.coslat0) <= EPSLN) { if (rh <= EPSLN) { lat = this.lat0; lon = this.long0; p.x = lon; p.y = lat; //trace(p.toString()); return p; } p.x *= this.con; p.y *= this.con; ts = rh * this.cons / (2 * this.a * this.k0); lat = this.con * phi2z(this.e, ts); lon = this.con * adjust_lon(this.con * this.long0 + Math.atan2(p.x, - 1 * p.y)); } else { ce = 2 * Math.atan(rh * this.cosX0 / (2 * this.a * this.k0 * this.ms1)); lon = this.long0; if (rh <= EPSLN) { Chi = this.X0; } else { Chi = Math.asin(Math.cos(ce) * this.sinX0 + p.y * Math.sin(ce) * this.cosX0 / rh); lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(ce), rh * this.cosX0 * Math.cos(ce) - p.y * this.sinX0 * Math.sin(ce))); } lat = -1 * phi2z(this.e, Math.tan(0.5 * (HALF_PI + Chi))); } } p.x = lon; p.y = lat; //trace(p.toString()); return p; }; exports.names = ["stere", "Stereographic_South_Pole", "Polar Stereographic (variant B)"]; },{"../common/adjust_lon":5,"../common/msfnz":15,"../common/phi2z":16,"../common/sign":21,"../common/tsfnz":24}],61:[function(_dereq_,module,exports){ var gauss = _dereq_('./gauss'); var adjust_lon = _dereq_('../common/adjust_lon'); exports.init = function() { gauss.init.apply(this); if (!this.rc) { return; } this.sinc0 = Math.sin(this.phic0); this.cosc0 = Math.cos(this.phic0); this.R2 = 2 * this.rc; if (!this.title) { this.title = "Oblique Stereographic Alternative"; } }; exports.forward = function(p) { var sinc, cosc, cosl, k; p.x = adjust_lon(p.x - this.long0); gauss.forward.apply(this, [p]); sinc = Math.sin(p.y); cosc = Math.cos(p.y); cosl = Math.cos(p.x); k = this.k0 * this.R2 / (1 + this.sinc0 * sinc + this.cosc0 * cosc * cosl); p.x = k * cosc * Math.sin(p.x); p.y = k * (this.cosc0 * sinc - this.sinc0 * cosc * cosl); p.x = this.a * p.x + this.x0; p.y = this.a * p.y + this.y0; return p; }; exports.inverse = function(p) { var sinc, cosc, lon, lat, rho; p.x = (p.x - this.x0) / this.a; p.y = (p.y - this.y0) / this.a; p.x /= this.k0; p.y /= this.k0; if ((rho = Math.sqrt(p.x * p.x + p.y * p.y))) { var c = 2 * Math.atan2(rho, this.R2); sinc = Math.sin(c); cosc = Math.cos(c); lat = Math.asin(cosc * this.sinc0 + p.y * sinc * this.cosc0 / rho); lon = Math.atan2(p.x * sinc, rho * this.cosc0 * cosc - p.y * this.sinc0 * sinc); } else { lat = this.phic0; lon = 0; } p.x = lon; p.y = lat; gauss.inverse.apply(this, [p]); p.x = adjust_lon(p.x + this.long0); return p; }; exports.names = ["Stereographic_North_Pole", "Oblique_Stereographic", "Polar_Stereographic", "sterea","Oblique Stereographic Alternative"]; },{"../common/adjust_lon":5,"./gauss":46}],62:[function(_dereq_,module,exports){ var e0fn = _dereq_('../common/e0fn'); var e1fn = _dereq_('../common/e1fn'); var e2fn = _dereq_('../common/e2fn'); var e3fn = _dereq_('../common/e3fn'); var mlfn = _dereq_('../common/mlfn'); var adjust_lon = _dereq_('../common/adjust_lon'); var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; var sign = _dereq_('../common/sign'); var asinz = _dereq_('../common/asinz'); exports.init = function() { this.e0 = e0fn(this.es); this.e1 = e1fn(this.es); this.e2 = e2fn(this.es); this.e3 = e3fn(this.es); this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); }; /** Transverse Mercator Forward - long/lat to x/y long/lat in radians */ exports.forward = function(p) { var lon = p.x; var lat = p.y; var delta_lon = adjust_lon(lon - this.long0); var con; var x, y; var sin_phi = Math.sin(lat); var cos_phi = Math.cos(lat); if (this.sphere) { var b = cos_phi * Math.sin(delta_lon); if ((Math.abs(Math.abs(b) - 1)) < 0.0000000001) { return (93); } else { x = 0.5 * this.a * this.k0 * Math.log((1 + b) / (1 - b)); con = Math.acos(cos_phi * Math.cos(delta_lon) / Math.sqrt(1 - b * b)); if (lat < 0) { con = -con; } y = this.a * this.k0 * (con - this.lat0); } } else { var al = cos_phi * delta_lon; var als = Math.pow(al, 2); var c = this.ep2 * Math.pow(cos_phi, 2); var tq = Math.tan(lat); var t = Math.pow(tq, 2); con = 1 - this.es * Math.pow(sin_phi, 2); var n = this.a / Math.sqrt(con); var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat); x = this.k0 * n * al * (1 + als / 6 * (1 - t + c + als / 20 * (5 - 18 * t + Math.pow(t, 2) + 72 * c - 58 * this.ep2))) + this.x0; y = this.k0 * (ml - this.ml0 + n * tq * (als * (0.5 + als / 24 * (5 - t + 9 * c + 4 * Math.pow(c, 2) + als / 30 * (61 - 58 * t + Math.pow(t, 2) + 600 * c - 330 * this.ep2))))) + this.y0; } p.x = x; p.y = y; return p; }; /** Transverse Mercator Inverse - x/y to long/lat */ exports.inverse = function(p) { var con, phi; var delta_phi; var i; var max_iter = 6; var lat, lon; if (this.sphere) { var f = Math.exp(p.x / (this.a * this.k0)); var g = 0.5 * (f - 1 / f); var temp = this.lat0 + p.y / (this.a * this.k0); var h = Math.cos(temp); con = Math.sqrt((1 - h * h) / (1 + g * g)); lat = asinz(con); if (temp < 0) { lat = -lat; } if ((g === 0) && (h === 0)) { lon = this.long0; } else { lon = adjust_lon(Math.atan2(g, h) + this.long0); } } else { // ellipsoidal form var x = p.x - this.x0; var y = p.y - this.y0; con = (this.ml0 + y / this.k0) / this.a; phi = con; for (i = 0; true; i++) { delta_phi = ((con + this.e1 * Math.sin(2 * phi) - this.e2 * Math.sin(4 * phi) + this.e3 * Math.sin(6 * phi)) / this.e0) - phi; phi += delta_phi; if (Math.abs(delta_phi) <= EPSLN) { break; } if (i >= max_iter) { return (95); } } // for() if (Math.abs(phi) < HALF_PI) { var sin_phi = Math.sin(phi); var cos_phi = Math.cos(phi); var tan_phi = Math.tan(phi); var c = this.ep2 * Math.pow(cos_phi, 2); var cs = Math.pow(c, 2); var t = Math.pow(tan_phi, 2); var ts = Math.pow(t, 2); con = 1 - this.es * Math.pow(sin_phi, 2); var n = this.a / Math.sqrt(con); var r = n * (1 - this.es) / con; var d = x / (n * this.k0); var ds = Math.pow(d, 2); lat = phi - (n * tan_phi * ds / r) * (0.5 - ds / 24 * (5 + 3 * t + 10 * c - 4 * cs - 9 * this.ep2 - ds / 30 * (61 + 90 * t + 298 * c + 45 * ts - 252 * this.ep2 - 3 * cs))); lon = adjust_lon(this.long0 + (d * (1 - ds / 6 * (1 + 2 * t + c - ds / 20 * (5 - 2 * c + 28 * t - 3 * cs + 8 * this.ep2 + 24 * ts))) / cos_phi)); } else { lat = HALF_PI * sign(y); lon = this.long0; } } p.x = lon; p.y = lat; return p; }; exports.names = ["Transverse_Mercator", "Transverse Mercator", "tmerc"]; },{"../common/adjust_lon":5,"../common/asinz":6,"../common/e0fn":7,"../common/e1fn":8,"../common/e2fn":9,"../common/e3fn":10,"../common/mlfn":14,"../common/sign":21}],63:[function(_dereq_,module,exports){ var D2R = 0.01745329251994329577; var tmerc = _dereq_('./tmerc'); exports.dependsOn = 'tmerc'; exports.init = function() { if (!this.zone) { return; } this.lat0 = 0; this.long0 = ((6 * Math.abs(this.zone)) - 183) * D2R; this.x0 = 500000; this.y0 = this.utmSouth ? 10000000 : 0; this.k0 = 0.9996; tmerc.init.apply(this); this.forward = tmerc.forward; this.inverse = tmerc.inverse; }; exports.names = ["Universal Transverse Mercator System", "utm"]; },{"./tmerc":62}],64:[function(_dereq_,module,exports){ var adjust_lon = _dereq_('../common/adjust_lon'); var HALF_PI = Math.PI/2; var EPSLN = 1.0e-10; var asinz = _dereq_('../common/asinz'); /* Initialize the Van Der Grinten projection ----------------------------------------*/ exports.init = function() { //this.R = 6370997; //Radius of earth this.R = this.a; }; exports.forward = function(p) { var lon = p.x; var lat = p.y; /* Forward equations -----------------*/ var dlon = adjust_lon(lon - this.long0); var x, y; if (Math.abs(lat) <= EPSLN) { x = this.x0 + this.R * dlon; y = this.y0; } var theta = asinz(2 * Math.abs(lat / Math.PI)); if ((Math.abs(dlon) <= EPSLN) || (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN)) { x = this.x0; if (lat >= 0) { y = this.y0 + Math.PI * this.R * Math.tan(0.5 * theta); } else { y = this.y0 + Math.PI * this.R * -Math.tan(0.5 * theta); } // return(OK); } var al = 0.5 * Math.abs((Math.PI / dlon) - (dlon / Math.PI)); var asq = al * al; var sinth = Math.sin(theta); var costh = Math.cos(theta); var g = costh / (sinth + costh - 1); var gsq = g * g; var m = g * (2 / sinth - 1); var msq = m * m; var con = Math.PI * this.R * (al * (g - msq) + Math.sqrt(asq * (g - msq) * (g - msq) - (msq + asq) * (gsq - msq))) / (msq + asq); if (dlon < 0) { con = -con; } x = this.x0 + con; //con = Math.abs(con / (Math.PI * this.R)); var q = asq + g; con = Math.PI * this.R * (m * q - al * Math.sqrt((msq + asq) * (asq + 1) - q * q)) / (msq + asq); if (lat >= 0) { //y = this.y0 + Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con); y = this.y0 + con; } else { //y = this.y0 - Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con); y = this.y0 - con; } p.x = x; p.y = y; return p; }; /* Van Der Grinten inverse equations--mapping x,y to lat/long ---------------------------------------------------------*/ exports.inverse = function(p) { var lon, lat; var xx, yy, xys, c1, c2, c3; var a1; var m1; var con; var th1; var d; /* inverse equations -----------------*/ p.x -= this.x0; p.y -= this.y0; con = Math.PI * this.R; xx = p.x / con; yy = p.y / con; xys = xx * xx + yy * yy; c1 = -Math.abs(yy) * (1 + xys); c2 = c1 - 2 * yy * yy + xx * xx; c3 = -2 * c1 + 1 + 2 * yy * yy + xys * xys; d = yy * yy / c3 + (2 * c2 * c2 * c2 / c3 / c3 / c3 - 9 * c1 * c2 / c3 / c3) / 27; a1 = (c1 - c2 * c2 / 3 / c3) / c3; m1 = 2 * Math.sqrt(-a1 / 3); con = ((3 * d) / a1) / m1; if (Math.abs(con) > 1) { if (con >= 0) { con = 1; } else { con = -1; } } th1 = Math.acos(con) / 3; if (p.y >= 0) { lat = (-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI; } else { lat = -(-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI; } if (Math.abs(xx) < EPSLN) { lon = this.long0; } else { lon = adjust_lon(this.long0 + Math.PI * (xys - 1 + Math.sqrt(1 + 2 * (xx * xx - yy * yy) + xys * xys)) / 2 / xx); } p.x = lon; p.y = lat; return p; }; exports.names = ["Van_der_Grinten_I", "VanDerGrinten", "vandg"]; },{"../common/adjust_lon":5,"../common/asinz":6}],65:[function(_dereq_,module,exports){ var D2R = 0.01745329251994329577; var R2D = 57.29577951308232088; var PJD_3PARAM = 1; var PJD_7PARAM = 2; var datum_transform = _dereq_('./datum_transform'); var adjust_axis = _dereq_('./adjust_axis'); var proj = _dereq_('./Proj'); var toPoint = _dereq_('./common/toPoint'); module.exports = function transform(source, dest, point) { var wgs84; if (Array.isArray(point)) { point = toPoint(point); } function checkNotWGS(source, dest) { return ((source.datum.datum_type === PJD_3PARAM || source.datum.datum_type === PJD_7PARAM) && dest.datumCode !== "WGS84"); } // Workaround for datum shifts towgs84, if either source or destination projection is not wgs84 if (source.datum && dest.datum && (checkNotWGS(source, dest) || checkNotWGS(dest, source))) { wgs84 = new proj('WGS84'); transform(source, wgs84, point); source = wgs84; } // DGR, 2010/11/12 if (source.axis !== "enu") { adjust_axis(source, false, point); } // Transform source points to long/lat, if they aren't already. if (source.projName === "longlat") { point.x *= D2R; // convert degrees to radians point.y *= D2R; } else { if (source.to_meter) { point.x *= source.to_meter; point.y *= source.to_meter; } source.inverse(point); // Convert Cartesian to longlat } // Adjust for the prime meridian if necessary if (source.from_greenwich) { point.x += source.from_greenwich; } // Convert datums if needed, and if possible. point = datum_transform(source.datum, dest.datum, point); // Adjust for the prime meridian if necessary if (dest.from_greenwich) { point.x -= dest.from_greenwich; } if (dest.projName === "longlat") { // convert radians to decimal degrees point.x *= R2D; point.y *= R2D; } else { // else project dest.forward(point); if (dest.to_meter) { point.x /= dest.to_meter; point.y /= dest.to_meter; } } // DGR, 2010/11/12 if (dest.axis !== "enu") { adjust_axis(dest, true, point); } return point; }; },{"./Proj":2,"./adjust_axis":3,"./common/toPoint":23,"./datum_transform":31}],66:[function(_dereq_,module,exports){ var D2R = 0.01745329251994329577; var extend = _dereq_('./extend'); function mapit(obj, key, v) { obj[key] = v.map(function(aa) { var o = {}; sExpr(aa, o); return o; }).reduce(function(a, b) { return extend(a, b); }, {}); } function sExpr(v, obj) { var key; if (!Array.isArray(v)) { obj[v] = true; return; } else { key = v.shift(); if (key === 'PARAMETER') { key = v.shift(); } if (v.length === 1) { if (Array.isArray(v[0])) { obj[key] = {}; sExpr(v[0], obj[key]); } else { obj[key] = v[0]; } } else if (!v.length) { obj[key] = true; } else if (key === 'TOWGS84') { obj[key] = v; } else { obj[key] = {}; if (['UNIT', 'PRIMEM', 'VERT_DATUM'].indexOf(key) > -1) { obj[key] = { name: v[0].toLowerCase(), convert: v[1] }; if (v.length === 3) { obj[key].auth = v[2]; } } else if (key === 'SPHEROID') { obj[key] = { name: v[0], a: v[1], rf: v[2] }; if (v.length === 4) { obj[key].auth = v[3]; } } else if (['GEOGCS', 'GEOCCS', 'DATUM', 'VERT_CS', 'COMPD_CS', 'LOCAL_CS', 'FITTED_CS', 'LOCAL_DATUM'].indexOf(key) > -1) { v[0] = ['name', v[0]]; mapit(obj, key, v); } else if (v.every(function(aa) { return Array.isArray(aa); })) { mapit(obj, key, v); } else { sExpr(v, obj[key]); } } } } function rename(obj, params) { var outName = params[0]; var inName = params[1]; if (!(outName in obj) && (inName in obj)) { obj[outName] = obj[inName]; if (params.length === 3) { obj[outName] = params[2](obj[outName]); } } } function d2r(input) { return input * D2R; } function cleanWKT(wkt) { if (wkt.type === 'GEOGCS') { wkt.projName = 'longlat'; } else if (wkt.type === 'LOCAL_CS') { wkt.projName = 'identity'; wkt.local = true; } else { if (typeof wkt.PROJECTION === "object") { wkt.projName = Object.keys(wkt.PROJECTION)[0]; } else { wkt.projName = wkt.PROJECTION; } } if (wkt.UNIT) { wkt.units = wkt.UNIT.name.toLowerCase(); if (wkt.units === 'metre') { wkt.units = 'meter'; } if (wkt.UNIT.convert) { if (wkt.type === 'GEOGCS') { if (wkt.DATUM && wkt.DATUM.SPHEROID) { wkt.to_meter = parseFloat(wkt.UNIT.convert, 10)*wkt.DATUM.SPHEROID.a; } } else { wkt.to_meter = parseFloat(wkt.UNIT.convert, 10); } } } if (wkt.GEOGCS) { //if(wkt.GEOGCS.PRIMEM&&wkt.GEOGCS.PRIMEM.convert){ // wkt.from_greenwich=wkt.GEOGCS.PRIMEM.convert*D2R; //} if (wkt.GEOGCS.DATUM) { wkt.datumCode = wkt.GEOGCS.DATUM.name.toLowerCase(); } else { wkt.datumCode = wkt.GEOGCS.name.toLowerCase(); } if (wkt.datumCode.slice(0, 2) === 'd_') { wkt.datumCode = wkt.datumCode.slice(2); } if (wkt.datumCode === 'new_zealand_geodetic_datum_1949' || wkt.datumCode === 'new_zealand_1949') { wkt.datumCode = 'nzgd49'; } if (wkt.datumCode === "wgs_1984") { if (wkt.PROJECTION === 'Mercator_Auxiliary_Sphere') { wkt.sphere = true; } wkt.datumCode = 'wgs84'; } if (wkt.datumCode.slice(-6) === '_ferro') { wkt.datumCode = wkt.datumCode.slice(0, - 6); } if (wkt.datumCode.slice(-8) === '_jakarta') { wkt.datumCode = wkt.datumCode.slice(0, - 8); } if (~wkt.datumCode.indexOf('belge')) { wkt.datumCode = "rnb72"; } if (wkt.GEOGCS.DATUM && wkt.GEOGCS.DATUM.SPHEROID) { wkt.ellps = wkt.GEOGCS.DATUM.SPHEROID.name.replace('_19', '').replace(/[Cc]larke\_18/, 'clrk'); if (wkt.ellps.toLowerCase().slice(0, 13) === "international") { wkt.ellps = 'intl'; } wkt.a = wkt.GEOGCS.DATUM.SPHEROID.a; wkt.rf = parseFloat(wkt.GEOGCS.DATUM.SPHEROID.rf, 10); } if (~wkt.datumCode.indexOf('osgb_1936')) { wkt.datumCode = "osgb36"; } } if (wkt.b && !isFinite(wkt.b)) { wkt.b = wkt.a; } function toMeter(input) { var ratio = wkt.to_meter || 1; return parseFloat(input, 10) * ratio; } var renamer = function(a) { return rename(wkt, a); }; var list = [ ['standard_parallel_1', 'Standard_Parallel_1'], ['standard_parallel_2', 'Standard_Parallel_2'], ['false_easting', 'False_Easting'], ['false_northing', 'False_Northing'], ['central_meridian', 'Central_Meridian'], ['latitude_of_origin', 'Latitude_Of_Origin'], ['latitude_of_origin', 'Central_Parallel'], ['scale_factor', 'Scale_Factor'], ['k0', 'scale_factor'], ['latitude_of_center', 'Latitude_of_center'], ['lat0', 'latitude_of_center', d2r], ['longitude_of_center', 'Longitude_Of_Center'], ['longc', 'longitude_of_center', d2r], ['x0', 'false_easting', toMeter], ['y0', 'false_northing', toMeter], ['long0', 'central_meridian', d2r], ['lat0', 'latitude_of_origin', d2r], ['lat0', 'standard_parallel_1', d2r], ['lat1', 'standard_parallel_1', d2r], ['lat2', 'standard_parallel_2', d2r], ['alpha', 'azimuth', d2r], ['srsCode', 'name'] ]; list.forEach(renamer); if (!wkt.long0 && wkt.longc && (wkt.projName === 'Albers_Conic_Equal_Area' || wkt.projName === "Lambert_Azimuthal_Equal_Area")) { wkt.long0 = wkt.longc; } if (!wkt.lat_ts && wkt.lat1 && (wkt.projName === 'Stereographic_South_Pole' || wkt.projName === 'Polar Stereographic (variant B)')) { wkt.lat0 = d2r(wkt.lat1 > 0 ? 90 : -90); wkt.lat_ts = wkt.lat1; } } module.exports = function(wkt, self) { var lisp = JSON.parse(("," + wkt).replace(/\s*\,\s*([A-Z_0-9]+?)(\[)/g, ',["$1",').slice(1).replace(/\s*\,\s*([A-Z_0-9]+?)\]/g, ',"$1"]').replace(/,\["VERTCS".+/,'')); var type = lisp.shift(); var name = lisp.shift(); lisp.unshift(['name', name]); lisp.unshift(['type', type]); lisp.unshift('output'); var obj = {}; sExpr(lisp, obj); cleanWKT(obj.output); return extend(self, obj.output); }; },{"./extend":34}],67:[function(_dereq_,module,exports){ /** * UTM zones are grouped, and assigned to one of a group of 6 * sets. * * {int} @private */ var NUM_100K_SETS = 6; /** * The column letters (for easting) of the lower left value, per * set. * * {string} @private */ var SET_ORIGIN_COLUMN_LETTERS = 'AJSAJS'; /** * The row letters (for northing) of the lower left value, per * set. * * {string} @private */ var SET_ORIGIN_ROW_LETTERS = 'AFAFAF'; var A = 65; // A var I = 73; // I var O = 79; // O var V = 86; // V var Z = 90; // Z /** * Conversion of lat/lon to MGRS. * * @param {object} ll Object literal with lat and lon properties on a * WGS84 ellipsoid. * @param {int} accuracy Accuracy in digits (5 for 1 m, 4 for 10 m, 3 for * 100 m, 2 for 1000 m or 1 for 10000 m). Optional, default is 5. * @return {string} the MGRS string for the given location and accuracy. */ exports.forward = function(ll, accuracy) { accuracy = accuracy || 5; // default accuracy 1m return encode(LLtoUTM({ lat: ll[1], lon: ll[0] }), accuracy); }; /** * Conversion of MGRS to lat/lon. * * @param {string} mgrs MGRS string. * @return {array} An array with left (longitude), bottom (latitude), right * (longitude) and top (latitude) values in WGS84, representing the * bounding box for the provided MGRS reference. */ exports.inverse = function(mgrs) { var bbox = UTMtoLL(decode(mgrs.toUpperCase())); if (bbox.lat && bbox.lon) { return [bbox.lon, bbox.lat, bbox.lon, bbox.lat]; } return [bbox.left, bbox.bottom, bbox.right, bbox.top]; }; exports.toPoint = function(mgrs) { var bbox = UTMtoLL(decode(mgrs.toUpperCase())); if (bbox.lat && bbox.lon) { return [bbox.lon, bbox.lat]; } return [(bbox.left + bbox.right) / 2, (bbox.top + bbox.bottom) / 2]; }; /** * Conversion from degrees to radians. * * @private * @param {number} deg the angle in degrees. * @return {number} the angle in radians. */ function degToRad(deg) { return (deg * (Math.PI / 180.0)); } /** * Conversion from radians to degrees. * * @private * @param {number} rad the angle in radians. * @return {number} the angle in degrees. */ function radToDeg(rad) { return (180.0 * (rad / Math.PI)); } /** * Converts a set of Longitude and Latitude co-ordinates to UTM * using the WGS84 ellipsoid. * * @private * @param {object} ll Object literal with lat and lon properties * representing the WGS84 coordinate to be converted. * @return {object} Object literal containing the UTM value with easting, * northing, zoneNumber and zoneLetter properties, and an optional * accuracy property in digits. Returns null if the conversion failed. */ function LLtoUTM(ll) { var Lat = ll.lat; var Long = ll.lon; var a = 6378137.0; //ellip.radius; var eccSquared = 0.00669438; //ellip.eccsq; var k0 = 0.9996; var LongOrigin; var eccPrimeSquared; var N, T, C, A, M; var LatRad = degToRad(Lat); var LongRad = degToRad(Long); var LongOriginRad; var ZoneNumber; // (int) ZoneNumber = Math.floor((Long + 180) / 6) + 1; //Make sure the longitude 180.00 is in Zone 60 if (Long === 180) { ZoneNumber = 60; } // Special zone for Norway if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) { ZoneNumber = 32; } // Special zones for Svalbard if (Lat >= 72.0 && Lat < 84.0) { if (Long >= 0.0 && Long < 9.0) { ZoneNumber = 31; } else if (Long >= 9.0 && Long < 21.0) { ZoneNumber = 33; } else if (Long >= 21.0 && Long < 33.0) { ZoneNumber = 35; } else if (Long >= 33.0 && Long < 42.0) { ZoneNumber = 37; } } LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin // in middle of // zone LongOriginRad = degToRad(LongOrigin); eccPrimeSquared = (eccSquared) / (1 - eccSquared); N = a / Math.sqrt(1 - eccSquared * Math.sin(LatRad) * Math.sin(LatRad)); T = Math.tan(LatRad) * Math.tan(LatRad); C = eccPrimeSquared * Math.cos(LatRad) * Math.cos(LatRad); A = Math.cos(LatRad) * (LongRad - LongOriginRad); M = a * ((1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256) * LatRad - (3 * eccSquared / 8 + 3 * eccSquared * eccSquared / 32 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(2 * LatRad) + (15 * eccSquared * eccSquared / 256 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(4 * LatRad) - (35 * eccSquared * eccSquared * eccSquared / 3072) * Math.sin(6 * LatRad)); var UTMEasting = (k0 * N * (A + (1 - T + C) * A * A * A / 6.0 + (5 - 18 * T + T * T + 72 * C - 58 * eccPrimeSquared) * A * A * A * A * A / 120.0) + 500000.0); var UTMNorthing = (k0 * (M + N * Math.tan(LatRad) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24.0 + (61 - 58 * T + T * T + 600 * C - 330 * eccPrimeSquared) * A * A * A * A * A * A / 720.0))); if (Lat < 0.0) { UTMNorthing += 10000000.0; //10000000 meter offset for // southern hemisphere } return { northing: Math.round(UTMNorthing), easting: Math.round(UTMEasting), zoneNumber: ZoneNumber, zoneLetter: getLetterDesignator(Lat) }; } /** * Converts UTM coords to lat/long, using the WGS84 ellipsoid. This is a convenience * class where the Zone can be specified as a single string eg."60N" which * is then broken down into the ZoneNumber and ZoneLetter. * * @private * @param {object} utm An object literal with northing, easting, zoneNumber * and zoneLetter properties. If an optional accuracy property is * provided (in meters), a bounding box will be returned instead of * latitude and longitude. * @return {object} An object literal containing either lat and lon values * (if no accuracy was provided), or top, right, bottom and left values * for the bounding box calculated according to the provided accuracy. * Returns null if the conversion failed. */ function UTMtoLL(utm) { var UTMNorthing = utm.northing; var UTMEasting = utm.easting; var zoneLetter = utm.zoneLetter; var zoneNumber = utm.zoneNumber; // check the ZoneNummber is valid if (zoneNumber < 0 || zoneNumber > 60) { return null; } var k0 = 0.9996; var a = 6378137.0; //ellip.radius; var eccSquared = 0.00669438; //ellip.eccsq; var eccPrimeSquared; var e1 = (1 - Math.sqrt(1 - eccSquared)) / (1 + Math.sqrt(1 - eccSquared)); var N1, T1, C1, R1, D, M; var LongOrigin; var mu, phi1Rad; // remove 500,000 meter offset for longitude var x = UTMEasting - 500000.0; var y = UTMNorthing; // We must know somehow if we are in the Northern or Southern // hemisphere, this is the only time we use the letter So even // if the Zone letter isn't exactly correct it should indicate // the hemisphere correctly if (zoneLetter < 'N') { y -= 10000000.0; // remove 10,000,000 meter offset used // for southern hemisphere } // There are 60 zones with zone 1 being at West -180 to -174 LongOrigin = (zoneNumber - 1) * 6 - 180 + 3; // +3 puts origin // in middle of // zone eccPrimeSquared = (eccSquared) / (1 - eccSquared); M = y / k0; mu = M / (a * (1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256)); phi1Rad = mu + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.sin(2 * mu) + (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.sin(4 * mu) + (151 * e1 * e1 * e1 / 96) * Math.sin(6 * mu); // double phi1 = ProjMath.radToDeg(phi1Rad); N1 = a / Math.sqrt(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad)); T1 = Math.tan(phi1Rad) * Math.tan(phi1Rad); C1 = eccPrimeSquared * Math.cos(phi1Rad) * Math.cos(phi1Rad); R1 = a * (1 - eccSquared) / Math.pow(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad), 1.5); D = x / (N1 * k0); var lat = phi1Rad - (N1 * Math.tan(phi1Rad) / R1) * (D * D / 2 - (5 + 3 * T1 + 10 * C1 - 4 * C1 * C1 - 9 * eccPrimeSquared) * D * D * D * D / 24 + (61 + 90 * T1 + 298 * C1 + 45 * T1 * T1 - 252 * eccPrimeSquared - 3 * C1 * C1) * D * D * D * D * D * D / 720); lat = radToDeg(lat); var lon = (D - (1 + 2 * T1 + C1) * D * D * D / 6 + (5 - 2 * C1 + 28 * T1 - 3 * C1 * C1 + 8 * eccPrimeSquared + 24 * T1 * T1) * D * D * D * D * D / 120) / Math.cos(phi1Rad); lon = LongOrigin + radToDeg(lon); var result; if (utm.accuracy) { var topRight = UTMtoLL({ northing: utm.northing + utm.accuracy, easting: utm.easting + utm.accuracy, zoneLetter: utm.zoneLetter, zoneNumber: utm.zoneNumber }); result = { top: topRight.lat, right: topRight.lon, bottom: lat, left: lon }; } else { result = { lat: lat, lon: lon }; } return result; } /** * Calculates the MGRS letter designator for the given latitude. * * @private * @param {number} lat The latitude in WGS84 to get the letter designator * for. * @return {char} The letter designator. */ function getLetterDesignator(lat) { //This is here as an error flag to show that the Latitude is //outside MGRS limits var LetterDesignator = 'Z'; if ((84 >= lat) && (lat >= 72)) { LetterDesignator = 'X'; } else if ((72 > lat) && (lat >= 64)) { LetterDesignator = 'W'; } else if ((64 > lat) && (lat >= 56)) { LetterDesignator = 'V'; } else if ((56 > lat) && (lat >= 48)) { LetterDesignator = 'U'; } else if ((48 > lat) && (lat >= 40)) { LetterDesignator = 'T'; } else if ((40 > lat) && (lat >= 32)) { LetterDesignator = 'S'; } else if ((32 > lat) && (lat >= 24)) { LetterDesignator = 'R'; } else if ((24 > lat) && (lat >= 16)) { LetterDesignator = 'Q'; } else if ((16 > lat) && (lat >= 8)) { LetterDesignator = 'P'; } else if ((8 > lat) && (lat >= 0)) { LetterDesignator = 'N'; } else if ((0 > lat) && (lat >= -8)) { LetterDesignator = 'M'; } else if ((-8 > lat) && (lat >= -16)) { LetterDesignator = 'L'; } else if ((-16 > lat) && (lat >= -24)) { LetterDesignator = 'K'; } else if ((-24 > lat) && (lat >= -32)) { LetterDesignator = 'J'; } else if ((-32 > lat) && (lat >= -40)) { LetterDesignator = 'H'; } else if ((-40 > lat) && (lat >= -48)) { LetterDesignator = 'G'; } else if ((-48 > lat) && (lat >= -56)) { LetterDesignator = 'F'; } else if ((-56 > lat) && (lat >= -64)) { LetterDesignator = 'E'; } else if ((-64 > lat) && (lat >= -72)) { LetterDesignator = 'D'; } else if ((-72 > lat) && (lat >= -80)) { LetterDesignator = 'C'; } return LetterDesignator; } /** * Encodes a UTM location as MGRS string. * * @private * @param {object} utm An object literal with easting, northing, * zoneLetter, zoneNumber * @param {number} accuracy Accuracy in digits (1-5). * @return {string} MGRS string for the given UTM location. */ function encode(utm, accuracy) { // prepend with leading zeroes var seasting = "00000" + utm.easting, snorthing = "00000" + utm.northing; return utm.zoneNumber + utm.zoneLetter + get100kID(utm.easting, utm.northing, utm.zoneNumber) + seasting.substr(seasting.length - 5, accuracy) + snorthing.substr(snorthing.length - 5, accuracy); } /** * Get the two letter 100k designator for a given UTM easting, * northing and zone number value. * * @private * @param {number} easting * @param {number} northing * @param {number} zoneNumber * @return the two letter 100k designator for the given UTM location. */ function get100kID(easting, northing, zoneNumber) { var setParm = get100kSetForZone(zoneNumber); var setColumn = Math.floor(easting / 100000); var setRow = Math.floor(northing / 100000) % 20; return getLetter100kID(setColumn, setRow, setParm); } /** * Given a UTM zone number, figure out the MGRS 100K set it is in. * * @private * @param {number} i An UTM zone number. * @return {number} the 100k set the UTM zone is in. */ function get100kSetForZone(i) { var setParm = i % NUM_100K_SETS; if (setParm === 0) { setParm = NUM_100K_SETS; } return setParm; } /** * Get the two-letter MGRS 100k designator given information * translated from the UTM northing, easting and zone number. * * @private * @param {number} column the column index as it relates to the MGRS * 100k set spreadsheet, created from the UTM easting. * Values are 1-8. * @param {number} row the row index as it relates to the MGRS 100k set * spreadsheet, created from the UTM northing value. Values * are from 0-19. * @param {number} parm the set block, as it relates to the MGRS 100k set * spreadsheet, created from the UTM zone. Values are from * 1-60. * @return two letter MGRS 100k code. */ function getLetter100kID(column, row, parm) { // colOrigin and rowOrigin are the letters at the origin of the set var index = parm - 1; var colOrigin = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(index); var rowOrigin = SET_ORIGIN_ROW_LETTERS.charCodeAt(index); // colInt and rowInt are the letters to build to return var colInt = colOrigin + column - 1; var rowInt = rowOrigin + row; var rollover = false; if (colInt > Z) { colInt = colInt - Z + A - 1; rollover = true; } if (colInt === I || (colOrigin < I && colInt > I) || ((colInt > I || colOrigin < I) && rollover)) { colInt++; } if (colInt === O || (colOrigin < O && colInt > O) || ((colInt > O || colOrigin < O) && rollover)) { colInt++; if (colInt === I) { colInt++; } } if (colInt > Z) { colInt = colInt - Z + A - 1; } if (rowInt > V) { rowInt = rowInt - V + A - 1; rollover = true; } else { rollover = false; } if (((rowInt === I) || ((rowOrigin < I) && (rowInt > I))) || (((rowInt > I) || (rowOrigin < I)) && rollover)) { rowInt++; } if (((rowInt === O) || ((rowOrigin < O) && (rowInt > O))) || (((rowInt > O) || (rowOrigin < O)) && rollover)) { rowInt++; if (rowInt === I) { rowInt++; } } if (rowInt > V) { rowInt = rowInt - V + A - 1; } var twoLetter = String.fromCharCode(colInt) + String.fromCharCode(rowInt); return twoLetter; } /** * Decode the UTM parameters from a MGRS string. * * @private * @param {string} mgrsString an UPPERCASE coordinate string is expected. * @return {object} An object literal with easting, northing, zoneLetter, * zoneNumber and accuracy (in meters) properties. */ function decode(mgrsString) { if (mgrsString && mgrsString.length === 0) { throw ("MGRSPoint coverting from nothing"); } var length = mgrsString.length; var hunK = null; var sb = ""; var testChar; var i = 0; // get Zone number while (!(/[A-Z]/).test(testChar = mgrsString.charAt(i))) { if (i >= 2) { throw ("MGRSPoint bad conversion from: " + mgrsString); } sb += testChar; i++; } var zoneNumber = parseInt(sb, 10); if (i === 0 || i + 3 > length) { // A good MGRS string has to be 4-5 digits long, // ##AAA/#AAA at least. throw ("MGRSPoint bad conversion from: " + mgrsString); } var zoneLetter = mgrsString.charAt(i++); // Should we check the zone letter here? Why not. if (zoneLetter <= 'A' || zoneLetter === 'B' || zoneLetter === 'Y' || zoneLetter >= 'Z' || zoneLetter === 'I' || zoneLetter === 'O') { throw ("MGRSPoint zone letter " + zoneLetter + " not handled: " + mgrsString); } hunK = mgrsString.substring(i, i += 2); var set = get100kSetForZone(zoneNumber); var east100k = getEastingFromChar(hunK.charAt(0), set); var north100k = getNorthingFromChar(hunK.charAt(1), set); // We have a bug where the northing may be 2000000 too low. // How // do we know when to roll over? while (north100k < getMinNorthing(zoneLetter)) { north100k += 2000000; } // calculate the char index for easting/northing separator var remainder = length - i; if (remainder % 2 !== 0) { throw ("MGRSPoint has to have an even number \nof digits after the zone letter and two 100km letters - front \nhalf for easting meters, second half for \nnorthing meters" + mgrsString); } var sep = remainder / 2; var sepEasting = 0.0; var sepNorthing = 0.0; var accuracyBonus, sepEastingString, sepNorthingString, easting, northing; if (sep > 0) { accuracyBonus = 100000.0 / Math.pow(10, sep); sepEastingString = mgrsString.substring(i, i + sep); sepEasting = parseFloat(sepEastingString) * accuracyBonus; sepNorthingString = mgrsString.substring(i + sep); sepNorthing = parseFloat(sepNorthingString) * accuracyBonus; } easting = sepEasting + east100k; northing = sepNorthing + north100k; return { easting: easting, northing: northing, zoneLetter: zoneLetter, zoneNumber: zoneNumber, accuracy: accuracyBonus }; } /** * Given the first letter from a two-letter MGRS 100k zone, and given the * MGRS table set for the zone number, figure out the easting value that * should be added to the other, secondary easting value. * * @private * @param {char} e The first letter from a two-letter MGRS 100´k zone. * @param {number} set The MGRS table set for the zone number. * @return {number} The easting value for the given letter and set. */ function getEastingFromChar(e, set) { // colOrigin is the letter at the origin of the set for the // column var curCol = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(set - 1); var eastingValue = 100000.0; var rewindMarker = false; while (curCol !== e.charCodeAt(0)) { curCol++; if (curCol === I) { curCol++; } if (curCol === O) { curCol++; } if (curCol > Z) { if (rewindMarker) { throw ("Bad character: " + e); } curCol = A; rewindMarker = true; } eastingValue += 100000.0; } return eastingValue; } /** * Given the second letter from a two-letter MGRS 100k zone, and given the * MGRS table set for the zone number, figure out the northing value that * should be added to the other, secondary northing value. You have to * remember that Northings are determined from the equator, and the vertical * cycle of letters mean a 2000000 additional northing meters. This happens * approx. every 18 degrees of latitude. This method does *NOT* count any * additional northings. You have to figure out how many 2000000 meters need * to be added for the zone letter of the MGRS coordinate. * * @private * @param {char} n Second letter of the MGRS 100k zone * @param {number} set The MGRS table set number, which is dependent on the * UTM zone number. * @return {number} The northing value for the given letter and set. */ function getNorthingFromChar(n, set) { if (n > 'V') { throw ("MGRSPoint given invalid Northing " + n); } // rowOrigin is the letter at the origin of the set for the // column var curRow = SET_ORIGIN_ROW_LETTERS.charCodeAt(set - 1); var northingValue = 0.0; var rewindMarker = false; while (curRow !== n.charCodeAt(0)) { curRow++; if (curRow === I) { curRow++; } if (curRow === O) { curRow++; } // fixing a bug making whole application hang in this loop // when 'n' is a wrong character if (curRow > V) { if (rewindMarker) { // making sure that this loop ends throw ("Bad character: " + n); } curRow = A; rewindMarker = true; } northingValue += 100000.0; } return northingValue; } /** * The function getMinNorthing returns the minimum northing value of a MGRS * zone. * * Ported from Geotrans' c Lattitude_Band_Value structure table. * * @private * @param {char} zoneLetter The MGRS zone to get the min northing for. * @return {number} */ function getMinNorthing(zoneLetter) { var northing; switch (zoneLetter) { case 'C': northing = 1100000.0; break; case 'D': northing = 2000000.0; break; case 'E': northing = 2800000.0; break; case 'F': northing = 3700000.0; break; case 'G': northing = 4600000.0; break; case 'H': northing = 5500000.0; break; case 'J': northing = 6400000.0; break; case 'K': northing = 7300000.0; break; case 'L': northing = 8200000.0; break; case 'M': northing = 9100000.0; break; case 'N': northing = 0.0; break; case 'P': northing = 800000.0; break; case 'Q': northing = 1700000.0; break; case 'R': northing = 2600000.0; break; case 'S': northing = 3500000.0; break; case 'T': northing = 4400000.0; break; case 'U': northing = 5300000.0; break; case 'V': northing = 6200000.0; break; case 'W': northing = 7000000.0; break; case 'X': northing = 7900000.0; break; default: northing = -1.0; } if (northing >= 0.0) { return northing; } else { throw ("Invalid zone letter: " + zoneLetter); } } },{}],68:[function(_dereq_,module,exports){ module.exports={ "name": "proj4", "version": "2.3.14", "description": "Proj4js is a JavaScript library to transform point coordinates from one coordinate system to another, including datum transformations.", "main": "lib/index.js", "directories": { "test": "test", "doc": "docs" }, "scripts": { "test": "./node_modules/istanbul/lib/cli.js test ./node_modules/mocha/bin/_mocha test/test.js" }, "repository": { "type": "git", "url": "git://github.com/proj4js/proj4js.git" }, "author": "", "license": "MIT", "jam": { "main": "dist/proj4.js", "include": [ "dist/proj4.js", "README.md", "AUTHORS", "LICENSE.md" ] }, "devDependencies": { "grunt-cli": "~0.1.13", "grunt": "~0.4.2", "grunt-contrib-connect": "~0.6.0", "grunt-contrib-jshint": "~0.8.0", "chai": "~1.8.1", "mocha": "~1.17.1", "grunt-mocha-phantomjs": "~0.4.0", "browserify": "~12.0.1", "grunt-browserify": "~4.0.1", "grunt-contrib-uglify": "~0.11.1", "curl": "git://github.com/cujojs/curl.git", "istanbul": "~0.2.4", "tin": "~0.4.0" }, "dependencies": { "mgrs": "~0.0.2" } } },{}],"./includedProjections":[function(_dereq_,module,exports){ module.exports=_dereq_('hTEDpn'); },{}],"hTEDpn":[function(_dereq_,module,exports){ var projs = [ _dereq_('./lib/projections/tmerc'), _dereq_('./lib/projections/utm'), _dereq_('./lib/projections/sterea'), _dereq_('./lib/projections/stere'), _dereq_('./lib/projections/somerc'), _dereq_('./lib/projections/omerc'), _dereq_('./lib/projections/lcc'), _dereq_('./lib/projections/krovak'), _dereq_('./lib/projections/cass'), _dereq_('./lib/projections/laea'), _dereq_('./lib/projections/aea'), _dereq_('./lib/projections/gnom'), _dereq_('./lib/projections/cea'), _dereq_('./lib/projections/eqc'), _dereq_('./lib/projections/poly'), _dereq_('./lib/projections/nzmg'), _dereq_('./lib/projections/mill'), _dereq_('./lib/projections/sinu'), _dereq_('./lib/projections/moll'), _dereq_('./lib/projections/eqdc'), _dereq_('./lib/projections/vandg'), _dereq_('./lib/projections/aeqd') ]; module.exports = function(proj4){ projs.forEach(function(proj){ proj4.Proj.projections.add(proj); }); } },{"./lib/projections/aea":40,"./lib/projections/aeqd":41,"./lib/projections/cass":42,"./lib/projections/cea":43,"./lib/projections/eqc":44,"./lib/projections/eqdc":45,"./lib/projections/gnom":47,"./lib/projections/krovak":48,"./lib/projections/laea":49,"./lib/projections/lcc":50,"./lib/projections/mill":53,"./lib/projections/moll":54,"./lib/projections/nzmg":55,"./lib/projections/omerc":56,"./lib/projections/poly":57,"./lib/projections/sinu":58,"./lib/projections/somerc":59,"./lib/projections/stere":60,"./lib/projections/sterea":61,"./lib/projections/tmerc":62,"./lib/projections/utm":63,"./lib/projections/vandg":64}]},{},[36]) (36) });