57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
//>>built
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define("dojox/gfx/arc",["./_base","dojo/_base/lang","./matrix"],function(g,_1,m){
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var _2=2*Math.PI,_3=Math.PI/4,_4=Math.PI/8,_5=_3+_4,_6=_7(_4);
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function _7(_8){
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var _9=Math.cos(_8),_a=Math.sin(_8),p2={x:_9+(4/3)*(1-_9),y:_a-(4/3)*_9*(1-_9)/_a};
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return {s:{x:_9,y:-_a},c1:{x:p2.x,y:-p2.y},c2:p2,e:{x:_9,y:_a}};
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};
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var _b=g.arc={unitArcAsBezier:_7,curvePI4:_6,arcAsBezier:function(_c,rx,ry,_d,_e,_f,x,y){
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_e=Boolean(_e);
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_f=Boolean(_f);
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var _10=m._degToRad(_d),rx2=rx*rx,ry2=ry*ry,pa=m.multiplyPoint(m.rotate(-_10),{x:(_c.x-x)/2,y:(_c.y-y)/2}),_11=pa.x*pa.x,_12=pa.y*pa.y,c1=Math.sqrt((rx2*ry2-rx2*_12-ry2*_11)/(rx2*_12+ry2*_11));
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if(isNaN(c1)){
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c1=0;
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}
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var ca={x:c1*rx*pa.y/ry,y:-c1*ry*pa.x/rx};
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if(_e==_f){
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ca={x:-ca.x,y:-ca.y};
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}
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var c=m.multiplyPoint([m.translate((_c.x+x)/2,(_c.y+y)/2),m.rotate(_10)],ca);
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var _13=m.normalize([m.translate(c.x,c.y),m.rotate(_10),m.scale(rx,ry)]);
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var _14=m.invert(_13),sp=m.multiplyPoint(_14,_c),ep=m.multiplyPoint(_14,x,y),_15=Math.atan2(sp.y,sp.x),_16=Math.atan2(ep.y,ep.x),_17=_15-_16;
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if(_f){
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_17=-_17;
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}
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if(_17<0){
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_17+=_2;
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}else{
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if(_17>_2){
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_17-=_2;
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}
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}
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var _18=_4,_19=_6,_1a=_f?_18:-_18,_1b=[];
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for(var _1c=_17;_1c>0;_1c-=_3){
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if(_1c<_5){
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_18=_1c/2;
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_19=_7(_18);
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_1a=_f?_18:-_18;
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_1c=0;
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}
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var c2,e,M=m.normalize([_13,m.rotate(_15+_1a)]);
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if(_f){
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c1=m.multiplyPoint(M,_19.c1);
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c2=m.multiplyPoint(M,_19.c2);
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e=m.multiplyPoint(M,_19.e);
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}else{
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c1=m.multiplyPoint(M,_19.c2);
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c2=m.multiplyPoint(M,_19.c1);
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e=m.multiplyPoint(M,_19.s);
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}
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_1b.push([c1.x,c1.y,c2.x,c2.y,e.x,e.y]);
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_15+=2*_1a;
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}
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return _1b;
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}};
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return _b;
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});
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