217 lines
12 KiB
JavaScript
217 lines
12 KiB
JavaScript
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/* @preserve
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* gcoord 0.2.2, geographic coordinate library
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* Copyright (c) 2019 Jiulong Hu <me@hujiulong.com>
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*/
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!function (e, t) {
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"object" == typeof exports && "undefined" != typeof module ? t(exports) : "function" == typeof define && define.amd ? define(["exports"], t) : t(e.gcoord = {})
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}(this, function (e) {
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"use strict";
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var t = "WGS84", r = t, n = t, o = "GCJ02", a = o, i = "BD09", u = i, f = i, c = i, s = "BD09MC", l = s,
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M = "EPSG3857", g = M, h = M, v = M, d = M;
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function m(e) {
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throw new Error(e)
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}
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function G(e) {
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return !isNaN(e) && null !== e && !S(e)
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}
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function S(e) {
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return !!e && "[object Array]" === Object.prototype.toString.call(e)
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}
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function P() {
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for (var o = [], e = 0; e < arguments.length; e++) o[e] = arguments[e];
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var a = o.length - 1;
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return function () {
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for (var e = [], t = 0; t < arguments.length; t++) e[t] = arguments[t];
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for (var r = a, n = o[a].apply(null, e); r--;) n = o[r].call(null, n);
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return n
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}
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}
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var b = Math.sin, y = Math.cos, p = Math.sqrt, B = Math.abs, D = Math.PI, C = 6378245, E = .006693421622965823;
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function W(e) {
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var t = e[0], r = e[1];
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if (!J(t, r)) return [t, r];
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for (var n = [t, r], o = n[0], a = n[1], i = x([o, a]), u = i[0] - t, f = i[1] - r; 1e-6 < B(u) || 1e-6 < B(f);) u = (i = x([o -= u, a -= f]))[0] - t, f = i[1] - r;
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return [o, a]
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}
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function x(e) {
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var t = e[0], r = e[1];
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if (!J(t, r)) return [t, r];
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var n = function (e, t) {
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var r = function (e, t) {
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var r = 300 + e + 2 * t + .1 * e * e + .1 * e * t + .1 * p(B(e));
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return r += 2 * (20 * b(6 * e * D) + 20 * b(2 * e * D)) / 3, r += 2 * (20 * b(e * D) + 40 * b(e / 3 * D)) / 3, r += 2 * (150 * b(e / 12 * D) + 300 * b(e / 30 * D)) / 3
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}(e - 105, t - 35), n = function (e, t) {
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var r = 2 * e - 100 + 3 * t + .2 * t * t + .1 * e * t + .2 * p(B(e));
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return r += 2 * (20 * b(6 * e * D) + 20 * b(2 * e * D)) / 3, r += 2 * (20 * b(t * D) + 40 * b(t / 3 * D)) / 3, r += 2 * (160 * b(t / 12 * D) + 320 * b(t * D / 30)) / 3
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}(e - 105, t - 35), o = t / 180 * D, a = b(o), i = p(a = 1 - E * a * a);
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return [r = 180 * r / (C / i * y(o) * D), n = 180 * n / (C * (1 - E) / (a * i) * D)]
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}(t, r);
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return [t + n[0], r + n[1]]
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}
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function J(e, t) {
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return 72.004 <= e && e <= 137.8347 && .8293 <= t && t <= 55.8271
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}
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var k = Math.sin, L = Math.cos, j = Math.atan2, I = Math.sqrt, q = 3e3 * Math.PI / 180;
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function w(e) {
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var t = e[0] - .0065, r = e[1] - .006, n = I(t * t + r * r) - 2e-5 * k(r * q), o = j(r, t) - 3e-6 * L(t * q);
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return [n * L(o), n * k(o)]
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}
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function N(e) {
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var t = e[0], r = e[1], n = I(t * t + r * r) + 2e-5 * k(r * q), o = j(r, t) + 3e-6 * L(t * q);
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return [n * L(o) + .0065, n * k(o) + .006]
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}
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var O = 180 / Math.PI, A = Math.PI / 180, F = 6378137, _ = 20037508.342789244;
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function z(e) {
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return [e[0] * O / F, (.5 * Math.PI - 2 * Math.atan(Math.exp(-e[1] / F))) * O]
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}
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function T(e) {
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var t = Math.abs(e[0]) <= 180 ? e[0] : e[0] - 360 * (e[0] < 0 ? -1 : 1),
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r = [F * t * A, F * Math.log(Math.tan(.25 * Math.PI + .5 * e[1] * A))];
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return r[0] > _ && (r[0] = _), r[0] < -_ && (r[0] = -_), r[1] > _ && (r[1] = _), r[1] < -_ && (r[1] = -_), r
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}
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var U = Math.abs, H = Math.pow, K = [12890594.86, 8362377.87, 5591021, 3481989.83, 1678043.12, 0],
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Q = [75, 60, 45, 30, 15, 0],
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R = [[1.410526172116255e-8, 898305509648872e-20, -1.9939833816331, 200.9824383106796, -187.2403703815547, 91.6087516669843, -23.38765649603339, 2.57121317296198, -.03801003308653, 17337981.2], [-7.435856389565537e-9, 8983055097726239e-21, -.78625201886289, 96.32687599759846, -1.85204757529826, -59.36935905485877, 47.40033549296737, -16.50741931063887, 2.28786674699375, 10260144.86], [-3.030883460898826e-8, 898305509983578e-20, .30071316287616, 59.74293618442277, 7.357984074871, -25.38371002664745, 13.45380521110908, -3.29883767235584, .32710905363475, 6856817.37], [-1.981981304930552e-8, 8983055099779535e-21, .03278182852591, 40.31678527705744, .65659298677277, -4.44255534477492, .85341911805263, .12923347998204, -.04625736007561, 4482777.06], [3.09191371068437e-9, 8983055096812155e-21, 6995724062e-14, 23.10934304144901, -.00023663490511, -.6321817810242, -.00663494467273, .03430082397953, -.00466043876332, 2555164.4], [2.890871144776878e-9, 8983055095805407e-21, -3.068298e-8, 7.47137025468032, -353937994e-14, -.02145144861037, -1234426596e-14, .00010322952773, -323890364e-14, 826088.5]],
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V = [[-.0015702102444, 111320.7020616939, 0x60e374c3105a3, -0x24bb4115e2e164, 0x5cc55543bb0ae8, -0x7ce070193f3784, 0x5e7ca61ddf8150, -0x261a578d8b24d0, 0x665d60f3742ca, 82.5], [.0008277824516172526, 111320.7020463578, 647795574.6671607, -4082003173.641316, 10774905663.51142, -15171875531.51559, 12053065338.62167, -5124939663.577472, 913311935.9512032, 67.5], [.00337398766765, 111320.7020202162, 4481351.045890365, -23393751.19931662, 79682215.47186455, -115964993.2797253, 97236711.15602145, -43661946.33752821, 8477230.501135234, 52.5], [.00220636496208, 111320.7020209128, 51751.86112841131, 3796837.749470245, 992013.7397791013, -1221952.21711287, 1340652.697009075, -620943.6990984312, 144416.9293806241, 37.5], [-.0003441963504368392, 111320.7020576856, 278.2353980772752, 2485758.690035394, 6070.750963243378, 54821.18345352118, 9540.606633304236, -2710.55326746645, 1405.483844121726, 22.5], [-.0003218135878613132, 111320.7020701615, .00369383431289, 823725.6402795718, .46104986909093, 2351.343141331292, 1.58060784298199, 8.77738589078284, .37238884252424, 7.45]];
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function X(e, t, r) {
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var n = U(t) / r[9], o = r[0] + r[1] * U(e),
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a = r[2] + r[3] * n + r[4] * H(n, 2) + r[5] * H(n, 3) + r[6] * H(n, 4) + r[7] * H(n, 5) + r[8] * H(n, 6);
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return [o *= e < 0 ? -1 : 1, a *= t < 0 ? -1 : 1]
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}
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function Y(e) {
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for (var t = e[0], r = e[1], n = [], o = 0; o < Q.length; o++) if (U(r) > Q[o]) {
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n = V[o];
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break
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}
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return X(t, r, n)
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}
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function Z(e) {
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for (var t = e[0], r = e[1], n = [], o = 0; o < K.length; o++) if (K[o] <= r) {
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n = R[o];
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break
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}
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return X(t, r, n)
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}
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var $ = {to: {GCJ02: x, BD09: P(N, x), BD09MC: P(Y, N, x), EPSG3857: T}},
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ee = {to: {WGS84: W, BD09: N, BD09MC: P(Y, N), EPSG3857: P(T, W)}},
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te = {to: {WGS84: P(W, w), GCJ02: w, EPSG3857: P(T, W, w), BD09MC: Y}},
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re = {to: {WGS84: z, GCJ02: P(x, z), BD09: P(N, x, z), BD09MC: P(Y, N, x, z)}},
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ne = {to: {WGS84: P(W, w, Z), GCJ02: P(w, Z), EPSG3857: P(T, W, w, Z), BD09: Z}},
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oe = Object.freeze({WGS84: $, GCJ02: ee, BD09: te, EPSG3857: re, BD09MC: ne});
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function ae(e, t, r) {
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e || m("coordinate is required"), t || m("original coordinate system is required"), r || m("target coordinate system is required");
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var n = oe[t];
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if (n || m("original coordinate system is invalid"), t === r) return e;
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var o = n.to[r];
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o || m("target coordinate system is invalid");
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var a = typeof e;
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if ("string" != a && "object" != a && m("coordinate must be an geojson or an array of position"), "string" == a) try {
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e = JSON.parse(e)
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} catch (e) {
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m("input is not a legal JSON string")
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}
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var i = !1;
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S(e) && (e.length < 2 && m("position must be at 2 numbers long"), G(e[0]) && G(e[1]) || m("position must contain numbers"), e = e.map(Number), i = !0);
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var u = o;
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return i ? u(e) : (function e(t, r, n) {
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if (void 0 === n && (n = !1), null !== t) for (var o, a, i, u, f, c, s, l, M = 0, g = 0, h = t.type, v = "FeatureCollection" === h, d = "Feature" === h, G = v ? t.features.length : 1, S = 0; S < G; S++) {
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f = (l = !!(s = v ? t.features[S].geometry : d ? t.geometry : t) && "GeometryCollection" === s.type) ? s.geometries.length : 1;
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for (var P = 0; P < f; P++) {
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var b = 0, y = 0;
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if (null !== (u = l ? s.geometries[P] : s)) {
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var p = u.type;
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switch (M = !n || "Polygon" !== p && "MultiPolygon" !== p ? 0 : 1, p) {
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case null:
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break;
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case"Point":
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if (!1 === r(c = u.coordinates, g, S, b, y)) return !1;
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g++, b++;
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break;
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case"LineString":
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case"MultiPoint":
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for (c = u.coordinates, o = 0; o < c.length; o++) {
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if (!1 === r(c[o], g, S, b, y)) return !1;
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g++, "MultiPoint" === p && b++
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}
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"LineString" === p && b++;
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break;
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case"Polygon":
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case"MultiLineString":
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for (c = u.coordinates, o = 0; o < c.length; o++) {
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for (a = 0; a < c[o].length - M; a++) {
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if (!1 === r(c[o][a], g, S, b, y)) return !1;
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g++
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}
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"MultiLineString" === p && b++, "Polygon" === p && y++
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}
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"Polygon" === p && b++;
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break;
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case"MultiPolygon":
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for (c = u.coordinates, o = 0; o < c.length; o++) {
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for (a = y = 0; a < c[o].length; a++) {
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for (i = 0; i < c[o][a].length - M; i++) {
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if (!1 === r(c[o][a][i], g, S, b, y)) return !1;
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g++
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}
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y++
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}
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b++
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}
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break;
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case"GeometryCollection":
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for (o = 0; o < u.geometries.length; o++) if (!1 === e(u.geometries[o], r, n)) return !1;
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break;
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default:
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m("Unknown Geometry Type")
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}
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}
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}
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}
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}(e, function (e) {
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var t;
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t = u(e), e[0] = t[0], e[1] = t[1]
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}), e)
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}
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var ie = {
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WGS84: t,
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WGS1984: r,
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EPSG4326: n,
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GCJ02: o,
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AMap: a,
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BD09: i,
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BD09LL: u,
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Baidu: f,
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BMap: c,
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BD09MC: s,
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BD09Meter: l,
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EPSG3857: M,
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EPSG900913: g,
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EPSG102100: h,
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WebMercator: v,
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WM: d,
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transform: ae
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};
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e.WGS84 = t, e.WGS1984 = r, e.EPSG4326 = n, e.GCJ02 = o, e.AMap = a, e.BD09 = i, e.BD09LL = u, e.Baidu = f, e.BMap = c, e.BD09MC = s, e.BD09Meter = l, e.EPSG3857 = M, e.EPSG900913 = g, e.EPSG102100 = h, e.WebMercator = v, e.WM = d, e.transform = ae, e.default = ie, Object.defineProperty(e, "__esModule", {value: !0})
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});
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