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34 lines
1.4 KiB
34 lines
1.4 KiB
//使用球上面的两个圆生成圆锥，这里有比较大的问题，应该三是椭圆锥
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// InfCone CIRC2andSPHERE(const Sphere &s,const Circ &x,const Circ &y){
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// //检测这2个圆是不是在球上
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// double d1=(s.center-x.center).norm();
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// double approx_r1=d1*d1+x.r*x.r;
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// double d2=(s.center-y.center).norm();
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// double approx_r2=d2*d2+y.r*y.r;
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// InfCone result;
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// if(!(APequal(approx_r1,s.r)&&APequal(approx_r2,s.r))){
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// cout<<"这个圆不在球上面";
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// cout<<s;
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// cout<<x;
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// cout<<y;
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// return result;
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// }
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// //计算平面向量与平面上的一个点
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// Plane p=getPlanefromPoint(s.center,x.center,y.center);
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// //计算四个点的位置（面与圆交）
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// vector<Point3D> points1=getPonintfromPlanandCirc(p,x);
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// vector<Point3D> points2=getPonintfromPlanandCirc(p,y);
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// //交换四个点的顺序
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// pointSeq(points1,points2);
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// //计算圆锥的顶点在哪里
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// Point3D top=findPoint(points1,points2);
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// //计算方向与半角度
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// Vector3d temp1=points1[0]-points2[0];
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// Vector3d temp2=points1[1]-points2[1];
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// double angle=acos(temp1.dot(temp2)/(temp1.norm()*temp2.norm()));
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// Vector3d dir=findAngularBisector(points1[0],points2[0],top);
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// result.top=top;
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// result.dir=dir;
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// result.angle=angle;
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// return result;
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// }
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