11 lines
10 KiB
JavaScript
11 lines
10 KiB
JavaScript
/*! geolib 2.0.9 by Manuel Bieh
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* Library to provide geo functions like distance calculation,
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* conversion of decimal coordinates to sexagesimal and vice versa, etc.
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* WGS 84 (World Geodetic System 1984)
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*
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* @author Manuel Bieh
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* @url http://www.manuelbieh.com/
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* @version 2.0.9
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* @license MIT
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**/
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!function(a,b){"use strict";function c(){}var d=Object.create(c.prototype,{version:{value:"2.0.9"},radius:{value:6378137},minLat:{value:-90},maxLat:{value:90},minLon:{value:-180},maxLon:{value:180},sexagesimalPattern:{value:/^([0-9]{1,3})°\s*([0-9]{1,3}(?:\.(?:[0-9]{1,2}))?)'\s*(([0-9]{1,3}(\.([0-9]{1,2}))?)"\s*)?([NEOSW]?)$/},measures:{value:Object.create(Object.prototype,{m:{value:1},km:{value:.001},cm:{value:100},mm:{value:1e3},mi:{value:1/1609.344},sm:{value:1/1852.216},ft:{value:100/30.48},"in":{value:100/2.54},yd:{value:1/.9144}})},prototype:{value:c.prototype},extend:{value:function(a,b){for(var c in a)("undefined"==typeof d.prototype[c]||b===!0)&&(d.prototype[c]=a[c])}}});"undefined"==typeof Number.prototype.toRad&&(Number.prototype.toRad=function(){return this*Math.PI/180}),"undefined"==typeof Number.prototype.toDeg&&(Number.prototype.toDeg=function(){return 180*this/Math.PI}),d.extend({decimal:{},sexagesimal:{},distance:null,getKeys:function(a){if("[object Array]"==Object.prototype.toString.call(a))return{longitude:a.length>=1?0:b,latitude:a.length>=2?1:b,elevation:a.length>=3?2:b};var c=function(b){var c;return b.every(function(b){return"object"!=typeof a?!0:a.hasOwnProperty(b)?function(){return c=b,!1}():!0}),c},d=c(["lng","lon","longitude"]),e=c(["lat","latitude"]),f=c(["alt","altitude","elevation","elev"]);return"undefined"==typeof e&&"undefined"==typeof d&&"undefined"==typeof f?b:{latitude:e,longitude:d,elevation:f}},getLat:function(a,b){return b===!0?a[this.getKeys(a).latitude]:this.useDecimal(a[this.getKeys(a).latitude])},latitude:function(a){return this.getLat.call(this,a)},getLon:function(a,b){return b===!0?a[this.getKeys(a).longitude]:this.useDecimal(a[this.getKeys(a).longitude])},longitude:function(a){return this.getLon.call(this,a)},getElev:function(a){return a[this.getKeys(a).elevation]},elevation:function(a){return this.getElev.call(this,a)},coords:function(a,b){var c={latitude:b===!0?a[this.getKeys(a).latitude]:this.useDecimal(a[this.getKeys(a).latitude]),longitude:b===!0?a[this.getKeys(a).longitude]:this.useDecimal(a[this.getKeys(a).longitude])},d=a[this.getKeys(a).elevation];return"undefined"!=typeof d&&(c.elevation=d),c},validate:function(a){var b=this.getKeys(a);if("undefined"==typeof b||"undefined"==typeof b.latitude||"undefined"===b.longitude)return!1;var c=a[b.latitude],d=a[b.longitude];return"undefined"==typeof c||!this.isDecimal(c)&&!this.isSexagesimal(c)?!1:"undefined"==typeof d||!this.isDecimal(d)&&!this.isSexagesimal(d)?!1:(c=this.useDecimal(c),d=this.useDecimal(d),c<this.minLat||c>this.maxLat||d<this.minLon||d>this.maxLon?!1:!0)},getDistance:function(a,b,c){c=Math.floor(c)||1;var e,f,g,h,i,j,k,l=this.coords(a),m=this.coords(b),n=6378137,o=6356752.314245,p=1/298.257223563,q=(m.longitude-l.longitude).toRad(),r=Math.atan((1-p)*Math.tan(parseFloat(l.latitude).toRad())),s=Math.atan((1-p)*Math.tan(parseFloat(m.latitude).toRad())),t=Math.sin(r),u=Math.cos(r),v=Math.sin(s),w=Math.cos(s),x=q,y=100;do{var z=Math.sin(x),A=Math.cos(x);if(j=Math.sqrt(w*z*w*z+(u*v-t*w*A)*(u*v-t*w*A)),0===j)return d.distance=0;e=t*v+u*w*A,f=Math.atan2(j,e),g=u*w*z/j,h=1-g*g,i=e-2*t*v/h,isNaN(i)&&(i=0);var B=p/16*h*(4+p*(4-3*h));k=x,x=q+(1-B)*p*g*(f+B*j*(i+B*e*(-1+2*i*i)))}while(Math.abs(x-k)>1e-12&&--y>0);if(0===y)return 0/0;var C=h*(n*n-o*o)/(o*o),D=1+C/16384*(4096+C*(-768+C*(320-175*C))),E=C/1024*(256+C*(-128+C*(74-47*C))),F=E*j*(i+E/4*(e*(-1+2*i*i)-E/6*i*(-3+4*j*j)*(-3+4*i*i))),G=o*D*(f-F);if(G=G.toFixed(3),"undefined"!=typeof this.elevation(a)&&"undefined"!=typeof this.elevation(b)){var H=Math.abs(this.elevation(a)-this.elevation(b));G=Math.sqrt(G*G+H*H)}return this.distance=Math.floor(Math.round(G/c)*c)},getDistanceSimple:function(a,b,c){c=Math.floor(c)||1;var e=Math.round(Math.acos(Math.sin(this.latitude(b).toRad())*Math.sin(this.latitude(a).toRad())+Math.cos(this.latitude(b).toRad())*Math.cos(this.latitude(a).toRad())*Math.cos(this.longitude(a).toRad()-this.longitude(b).toRad()))*this.radius);return d.distance=Math.floor(Math.round(e/c)*c)},getCenter:function(a){if(!a.length)return!1;var b,c,d=function(a){return Math.max.apply(Math,a)},e=function(a){return Math.min.apply(Math,a)},f={latitude:[],longitude:[]};for(var g in a)f.latitude.push(this.latitude(a[g])),f.longitude.push(this.longitude(a[g]));var h=e(f.latitude),i=e(f.longitude),j=d(f.latitude),k=d(f.longitude);b=((h+j)/2).toFixed(6),c=((i+k)/2).toFixed(6);var l=this.convertUnit("km",this.getDistance({latitude:h,longitude:i},{latitude:j,longitude:k}));return{latitude:b,longitude:c,distance:l}},getBounds:function(a){if(!a.length)return!1;var b=this.elevation(a[0]),c={maxLat:-1/0,minLat:1/0,maxLng:-1/0,minLng:1/0};"undefined"!=typeof b&&(c.maxElev=0,c.minElev=1/0);for(var d=0,e=a.length;e>d;++d)c.maxLat=Math.max(this.latitude(a[d]),c.maxLat),c.minLat=Math.min(this.latitude(a[d]),c.minLat),c.maxLng=Math.max(this.longitude(a[d]),c.maxLng),c.minLng=Math.min(this.longitude(a[d]),c.minLng),b&&(c.maxElev=Math.max(this.elevation(a[d]),c.maxElev),c.minElev=Math.min(this.elevation(a[d]),c.minElev));return c},getBoundsOfDistance:function(a,b){var c,d,e=this.latitude(a),f=this.longitude(a),g=e.toRad(),h=f.toRad(),i=b/this.radius,j=g-i,k=g+i,l=this.maxLat.toRad(),m=this.minLat.toRad(),n=this.maxLon.toRad(),o=this.minLon.toRad();if(j>m&&l>k){var p=Math.asin(Math.sin(i)/Math.cos(g));c=h-p,o>c&&(c+=2*Math.PI),d=h+p,d>n&&(d-=2*Math.PI)}else j=Math.max(j,m),k=Math.min(k,l),c=o,d=n;return[{latitude:j.toDeg(),longitude:c.toDeg()},{latitude:k.toDeg(),longitude:d.toDeg()}]},isPointInside:function(a,b){for(var c=!1,d=-1,e=b.length,f=e-1;++d<e;f=d)(this.longitude(b[d])<=this.longitude(a)&&this.longitude(a)<this.longitude(b[f])||this.longitude(b[f])<=this.longitude(a)&&this.longitude(a)<this.longitude(b[d]))&&this.latitude(a)<(this.latitude(b[f])-this.latitude(b[d]))*(this.longitude(a)-this.longitude(b[d]))/(this.longitude(b[f])-this.longitude(b[d]))+this.latitude(b[d])&&(c=!c);return c},isInside:function(){return this.isPointInside.apply(this,arguments)},isPointInCircle:function(a,b,c){return this.getDistance(a,b)<c},withinRadius:function(){return this.isPointInCircle.apply(this,arguments)},getRhumbLineBearing:function(a,b){var c=this.longitude(b).toRad()-this.longitude(a).toRad(),d=Math.log(Math.tan(this.latitude(b).toRad()/2+Math.PI/4)/Math.tan(this.latitude(a).toRad()/2+Math.PI/4));return Math.abs(c)>Math.PI&&(c=c>0?-1*(2*Math.PI-c):2*Math.PI+c),(Math.atan2(c,d).toDeg()+360)%360},getBearing:function(a,b){b.latitude=this.latitude(b),b.longitude=this.longitude(b),a.latitude=this.latitude(a),a.longitude=this.longitude(a);var c=(Math.atan2(Math.sin(b.longitude.toRad()-a.longitude.toRad())*Math.cos(b.latitude.toRad()),Math.cos(a.latitude.toRad())*Math.sin(b.latitude.toRad())-Math.sin(a.latitude.toRad())*Math.cos(b.latitude.toRad())*Math.cos(b.longitude.toRad()-a.longitude.toRad())).toDeg()+360)%360;return c},getCompassDirection:function(a,b,c){var d,e;switch(e="circle"==c?this.getBearing(a,b):this.getRhumbLineBearing(a,b),Math.round(e/22.5)){case 1:d={exact:"NNE",rough:"N"};break;case 2:d={exact:"NE",rough:"N"};break;case 3:d={exact:"ENE",rough:"E"};break;case 4:d={exact:"E",rough:"E"};break;case 5:d={exact:"ESE",rough:"E"};break;case 6:d={exact:"SE",rough:"E"};break;case 7:d={exact:"SSE",rough:"S"};break;case 8:d={exact:"S",rough:"S"};break;case 9:d={exact:"SSW",rough:"S"};break;case 10:d={exact:"SW",rough:"S"};break;case 11:d={exact:"WSW",rough:"W"};break;case 12:d={exact:"W",rough:"W"};break;case 13:d={exact:"WNW",rough:"W"};break;case 14:d={exact:"NW",rough:"W"};break;case 15:d={exact:"NNW",rough:"N"};break;default:d={exact:"N",rough:"N"}}return d.bearing=e,d},getDirection:function(){return this.getCompassDirection.apply(this,arguments)},orderByDistance:function(a,b){var c=[];for(var d in b){var e=this.getDistance(a,b[d]);c.push({key:d,latitude:this.latitude(b[d]),longitude:this.longitude(b[d]),distance:e})}return c.sort(function(a,b){return a.distance-b.distance})},findNearest:function(a,b,c,d){c=c||0,d=d||1;var e=this.orderByDistance(a,b);return 1===d?e[c]:e.splice(c,d)},getPathLength:function(a){for(var b,c=0,d=0,e=a.length;e>d;++d)b&&(c+=this.getDistance(this.coords(a[d]),b)),b=this.coords(a[d]);return c},getSpeed:function(a,b,c){var e=c&&c.unit||"km";"mph"==e?e="mi":"kmh"==e&&(e="km");var f=d.getDistance(a,b),g=1*b.time/1e3-1*a.time/1e3,h=f/g*3600,i=Math.round(h*this.measures[e]*1e4)/1e4;return i},convertUnit:function(a,b,c){if(0===b||"undefined"==typeof b){if(0===this.distance)return 0;b=this.distance}if(a=a||"m",c=null==c?4:c,"undefined"!=typeof this.measures[a])return this.round(b*this.measures[a],c);throw new Error("Unknown unit for conversion.")},useDecimal:function(a){if("[object Array]"===Object.prototype.toString.call(a)){var b=this;return a=a.map(function(a){if(b.isDecimal(a))return b.useDecimal(a);if("object"==typeof a){if(b.validate(a))return b.coords(a);for(var c in a)a[c]=b.useDecimal(a[c]);return a}return b.isSexagesimal(a)?b.sexagesimal2decimal(a):a})}if("object"==typeof a&&this.validate(a))return this.coords(a);if("object"==typeof a){for(var c in a)a[c]=this.useDecimal(a[c]);return a}if(this.isDecimal(a))return parseFloat(a);if(this.isSexagesimal(a)===!0)return parseFloat(this.sexagesimal2decimal(a));throw new Error("Unknown format.")},decimal2sexagesimal:function(a){if(a in this.sexagesimal)return this.sexagesimal[a];var b=a.toString().split("."),c=Math.abs(b[0]),d=60*("0."+b[1]),e=d.toString().split(".");return d=Math.floor(d),e=(60*("0."+e[1])).toFixed(2),this.sexagesimal[a]=c+"° "+d+"' "+e+'"',this.sexagesimal[a]},sexagesimal2decimal:function(a){if(a in this.decimal)return this.decimal[a];var b=new RegExp(this.sexagesimalPattern),c=b.exec(a),d=0,e=0;c&&(d=parseFloat(c[2]/60),e=parseFloat(c[4]/3600)||0);var f=(parseFloat(c[1])+d+e).toFixed(8);return f=parseFloat("S"==c[7]||"W"==c[7]?-f:f),this.decimal[a]=f,f},isDecimal:function(a){return a=a.toString().replace(/\s*/,""),!isNaN(parseFloat(a))&&parseFloat(a)==a},isSexagesimal:function(a){return a=a.toString().replace(/\s*/,""),this.sexagesimalPattern.test(a)},round:function(a,b){var c=Math.pow(10,b);return Math.round(a*c)/c}}),"undefined"!=typeof module&&"undefined"!=typeof module.exports?a.geolib=module.exports=d:"function"==typeof define&&define.amd?define("geolib",[],function(){return d}):a.geolib=d}(this); |