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gcoord.js

gcoord.js 8.5 KB
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  1. /* @preserve
    2. 

  2.  * gcoord 0.3.2, geographic coordinate library
    3. 

  3.  * Copyright (c) 2021 Jiulong Hu <me@hujiulong.com>
    4. 

  4.  */
    5. 

  5. !function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).gcoord=t()}(this,(function(){"use strict";
    6. 

  6.     /*! *****************************************************************************
    7. 

  7.         Copyright (c) Microsoft Corporation.
    8. 

  8. 

  9.         Permission to use, copy, modify, and/or distribute this software for any
    10. 

  10.         purpose with or without fee is hereby granted.
    11. 

  11. 

  12.         THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
    13. 

  13.         REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
    14. 

  14.         AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
    15. 

  15.         INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
    16. 

  16.         LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
    17. 

  17.         OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
    18. 

  18.         PERFORMANCE OF THIS SOFTWARE.
    19. 

  19.         ***************************************************************************** */var e=function(){return(e=Object.assign||function(e){for(var t,r=1,n=arguments.length;r<n;r++)for(var o in t=arguments[r])Object.prototype.hasOwnProperty.call(t,o)&&(e[o]=t[o]);return e}).apply(this,arguments)},t=Math.sin,r=Math.cos,n=Math.sqrt,o=Math.abs,a=Math.PI,i=6378245,u=.006693421622965823;function f(e,t){return e>=72.004&&e<=137.8347&&t>=.8293&&t<=55.8271}function c(e,f){var c,l,s,h=(s=300+(c=e-105)+2*(l=f-35)+.1*c*c+.1*c*l+.1*n(o(c)),s+=2*(20*t(6*c*a)+20*t(2*c*a))/3,(s+=2*(20*t(c*a)+40*t(c/3*a))/3)+2*(150*t(c/12*a)+300*t(c/30*a))/3),g=function(e,r){var i=2*e-100+3*r+.2*r*r+.1*e*r+.2*n(o(e));return i+=2*(20*t(6*e*a)+20*t(2*e*a))/3,i+=2*(20*t(r*a)+40*t(r/3*a))/3,i+2*(160*t(r/12*a)+320*t(r*a/30))/3}(e-105,f-35),M=f/180*a,d=t(M),v=n(d=1-u*d*d);return[h=180*h/(i/v*r(M)*a),g=180*g/(i*(1-u)/(d*v)*a)]}function l(e){var t=e[0],r=e[1];if(!f(t,r))return[t,r];var n=c(t,r);return[t+n[0],r+n[1]]}function s(e){var t=e[0],r=e[1];if(!f(t,r))return[t,r];for(var n=[t,r],a=n[0],i=n[1],u=l([a,i]),c=u[0]-t,s=u[1]-r;o(c)>1e-6||o(s)>1e-6;)c=(u=l([a-=c,i-=s]))[0]-t,s=u[1]-r;return[a,i]}var h=Math.sin,g=Math.cos,M=Math.atan2,d=Math.sqrt,v=3e3*Math.PI/180;function p(e){var t=e[0]-.0065,r=e[1]-.006,n=d(t*t+r*r)-2e-5*h(r*v),o=M(r,t)-3e-6*g(t*v);return[n*g(o),n*h(o)]}function G(e){var t=e[0],r=e[1],n=d(t*t+r*r)+2e-5*h(r*v),o=M(r,t)+3e-6*g(t*v);return[n*g(o)+.0065,n*h(o)+.006]}var y=180/Math.PI,S=Math.PI/180,P=6378137,b=20037508.342789244;function B(e){return[e[0]*y/P,(.5*Math.PI-2*Math.atan(Math.exp(-e[1]/P)))*y]}function m(e){var t=Math.abs(e[0])<=180?e[0]:e[0]-360*(e[0]<0?-1:1),r=[P*t*S,P*Math.log(Math.tan(.25*Math.PI+.5*e[1]*S))];return r[0]>b&&(r[0]=b),r[0]<-b&&(r[0]=-b),r[1]>b&&(r[1]=b),r[1]<-b&&(r[1]=-b),r}var C,D,E,w,I,W,x=Math.abs,k=[12890594.86,8362377.87,5591021,3481989.83,1678043.12,0],J=[75,60,45,30,15,0],T=[[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]],j=[[-.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]];function L(e,t,r){var n=x(t)/r[9],o=r[0]+r[1]*x(e),a=r[2]+r[3]*n+r[4]*Math.pow(n,2)+r[5]*Math.pow(n,3)+r[6]*Math.pow(n,4)+r[7]*Math.pow(n,5)+r[8]*Math.pow(n,6);return[o*=e<0?-1:1,a*=t<0?-1:1]}function q(e){for(var t=e[0],r=e[1],n=[],o=0;o<J.length;o++)if(x(r)>J[o]){n=j[o];break}return L(t,r,n)}function N(e){for(var t=e[0],r=e[1],n=[],o=0;o<k.length;o++)if(r>=k[o]){n=T[o];break}return L(t,r,n)}function O(e,t){if(!e)throw new Error(t)}function A(e){return!!e&&"[object Array]"===Object.prototype.toString.call(e)}function F(e){return!isNaN(Number(e))&&null!==e&&!A(e)}function R(){for(var e=[],t=0;t<arguments.length;t++)e[t]=arguments[t];var r=e.length-1;return function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];for(var o=r,a=e[r].apply(null,t);o--;)a=e[o].call(null,a);return a}}function U(e,t,r){if(void 0===r&&(r=!1),null!==e)for(var n,o,a,i,u,f,c,l,s=0,h=0,g=e.type,M="FeatureCollection"===g,d="Feature"===g,v=M?e.features.length:1,p=0;p<v;p++){u=(l=!!(c=M?e.features[p].geometry:d?e.geometry:e)&&"GeometryCollection"===c.type)?c.geometries.length:1;for(var G=0;G<u;G++){var y=0,S=0;if(null!==(i=l?c.geometries[G]:c)){var P=i.type;switch(s=!r||"Polygon"!==P&&"MultiPolygon"!==P?0:1,P){case null:break;case"Point":if(!1===t(f=i.coordinates,h,p,y,S))return!1;h++,y++;break;case"LineString":case"MultiPoint":for(f=i.coordinates,n=0;n<f.length;n++){if(!1===t(f[n],h,p,y,S))return!1;h++,"MultiPoint"===P&&y++}"LineString"===P&&y++;break;case"Polygon":case"MultiLineString":for(f=i.coordinates,n=0;n<f.length;n++){for(o=0;o<f[n].length-s;o++){if(!1===t(f[n][o],h,p,y,S))return!1;h++}"MultiLineString"===P&&y++,"Polygon"===P&&S++}"Polygon"===P&&y++;break;case"MultiPolygon":for(f=i.coordinates,n=0;n<f.length;n++){for(S=0,o=0;o<f[n].length;o++){for(a=0;a<f[n][o].length-s;a++){if(!1===t(f[n][o][a],h,p,y,S))return!1;h++}S++}y++}break;case"GeometryCollection":for(n=0;n<i.geometries.length;n++)if(!1===U(i.geometries[n],t,r))return!1;break;default:throw new Error("Unknown Geometry Type")}}}}}!function(e){e.WGS84="WGS84",e.WGS1984="WGS84",e.EPSG4326="WGS84",e.GCJ02="GCJ02",e.AMap="GCJ02",e.BD09="BD09",e.BD09LL="BD09",e.Baidu="BD09",e.BMap="BD09",e.BD09MC="BD09MC",e.BD09Meter="BD09MC",e.EPSG3857="EPSG3857",e.EPSG900913="EPSG3857",e.EPSG102100="EPSG3857",e.WebMercator="EPSG3857",e.WM="EPSG3857"}(W||(W={}));var z={WGS84:{to:(C={},C[W.GCJ02]=l,C[W.BD09]=R(G,l),C[W.BD09MC]=R(q,G,l),C[W.EPSG3857]=m,C)},GCJ02:{to:(D={},D[W.WGS84]=s,D[W.BD09]=G,D[W.BD09MC]=R(q,G),D[W.EPSG3857]=R(m,s),D)},BD09:{to:(E={},E[W.WGS84]=R(s,p),E[W.GCJ02]=p,E[W.EPSG3857]=R(m,s,p),E[W.BD09MC]=q,E)},EPSG3857:{to:(w={},w[W.WGS84]=B,w[W.GCJ02]=R(l,B),w[W.BD09]=R(G,l,B),w[W.BD09MC]=R(q,G,l,B),w)},BD09MC:{to:(I={},I[W.WGS84]=R(s,p,N),I[W.GCJ02]=R(p,N),I[W.EPSG3857]=R(m,s,p,N),I[W.BD09]=N,I)}};return e(e({},W),{CRSTypes:W,transform:function(e,t,r){if(O(!!e,"The args[0] input coordinate is required"),O(!!t,"The args[1] original coordinate system is required"),O(!!r,"The args[2] target coordinate system is required"),t===r)return e;var n=z[t];O(!!n,"Invalid original coordinate system: "+t);var o=n.to[r];O(!!o,"Invalid target coordinate system: "+r);var a=typeof e;if(O("string"===a||"object"===a,"Invalid input coordinate type: "+a),"string"===a)try{e=JSON.parse(e)}catch(t){throw new Error("Invalid input coordinate: "+e)}var i=!1;A(e)&&(O(e.length>=2,"Invalid input coordinate: "+e),O(F(e[0])&&F(e[1]),"Invalid input coordinate: "+e),e=e.map(Number),i=!0);var u=o;return i?u(e):(U(e,(function(e){var t;t=u(e),e[0]=t[0],e[1]=t[1]})),e)}})}));
    20. 

  20. //# sourceMappingURL=gcoord.js.map
    21.