50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
//>>built
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define("dojox/geo/openlayers/GreatCircle",["dojo/_base/lang","dojox/geo/openlayers/GeometryFeature","dojox/geo/openlayers/Point","dojox/geo/openlayers/LineString"],function(_1,_2,_3,_4){
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_1.getObject("geo.openlayers",true,dojox);
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dojox.geo.openlayers.GreatCircle={toPointArray:function(p1,p2,_5){
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var _6=p1.x;
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var _7=p2.x;
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var sl=Math.min(_6,_7);
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var el=Math.max(_6,_7);
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var _8=this.DEG2RAD;
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var _9=p1.y*_8;
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var _a=p1.x*_8;
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var _b=p2.y*_8;
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var _c=p2.x*_8;
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if(Math.abs(_a-_c)<=this.TOLERANCE){
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var l=Math.min(_a,_c);
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_c=l+Math.PI;
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}
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if(Math.abs(_c-_a)==Math.PI){
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if(_9+_b==0){
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_b+=Math.PI/180000000;
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}
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}
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var _d=sl*_8;
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var _e=el*_8;
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var _f=_5*_8;
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var wp=[];
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var k=0;
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var r2d=this.RAD2DEG;
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while(_d<=_e){
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lat=Math.atan((Math.sin(_9)*Math.cos(_b)*Math.sin(_d-_c)-Math.sin(_b)*Math.cos(_9)*Math.sin(_d-_a))/(Math.cos(_9)*Math.cos(_b)*Math.sin(_a-_c)));
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var p={x:_d*r2d,y:lat*r2d};
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wp[k++]=p;
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if(_d<_e&&(_d+_f)>=_e){
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_d=_e;
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}else{
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_d=_d+_f;
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}
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}
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return wp;
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},toLineString:function(p1,p2,_10){
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var wp=this.toPointArray(p1,p2,_10);
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var ls=new OpenLayers.Geometry.LineString(wp);
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return ls;
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},toGeometryFeature:function(p1,p2,_11){
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var ls=this.toLineString(p1,p2,_11);
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return new _2(ls);
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},DEG2RAD:Math.PI/180,RAD2DEG:180/Math.PI,TOLERANCE:0.00001};
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return dojox.geo.openlayers.GreatCircle;
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});
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