ckground=e.background.clone()),e.environment!==null&&(this.environment=e.environment.clone()),e.fog!==null&&(this.fog=e.fog.clone()),this.backgroundBlurriness=e.backgroundBlurriness,this.backgroundIntensity=e.backgroundIntensity,this.backgroundRotation.copy(e.backgroundRotation),this.environmentIntensity=e.environmentIntensity,this.environmentRotation.copy(e.environmentRotation),e.overrideMaterial!==null&&(this.overrideMaterial=e.overrideMaterial.clone()),this.matrixAutoUpdate=e.matrixAutoUpdate,this}toJSON(e){let t=super.toJSON(e);return this.fog!==null&&(t.object.fog=this.fog.toJSON()),t.object.backgroundBlurriness=this.backgroundBlurriness,t.object.backgroundIntensity=this.backgroundIntensity,t.object.backgroundRotation=this.backgroundRotation.toArray(),t.object.environmentIntensity=this.environmentIntensity,t.object.environmentRotation=this.environmentRotation.toArray(),t}},Gn=new P,mi=new P,Cc=new P,gi=new P,ws=new P,As=new P,zu=new P,Ic=new P,Pc=new P,Lc=new P,Dc=new Ct,Nc=new Ct,Uc=new Ct,vi=class i{constructor(e=new P,t=new P,n=new P){this.a=e,this.b=t,this.c=n}static getNormal(e,t,n,s){s.subVectors(n,t),Gn.subVectors(e,t),s.cross(Gn);let r=s.lengthSq();return r>0?s.multiplyScalar(1/Math.sqrt(r)):s.set(0,0,0)}static getBarycoord(e,t,n,s,r){Gn.subVectors(s,t),mi.subVectors(n,t),Cc.subVectors(e,t);let a=Gn.dot(Gn),o=Gn.dot(mi),l=Gn.dot(Cc),c=mi.dot(mi),h=mi.dot(Cc),f=a*c-o*o;if(f===0)return r.set(0,0,0),null;let u=1/f,d=(c*l-o*h)*u,g=(a*h-o*l)*u;return r.set(1-d-g,g,d)}static containsPoint(e,t,n,s){return this.getBarycoord(e,t,n,s,gi)===null?!1:gi.x>=0&&gi.y>=0&&gi.x+gi.y<=1}static getInterpolation(e,t,n,s,r,a,o,l){return this.getBarycoord(e,t,n,s,gi)===null?(l.x=0,l.y=0,"z"in l&&(l.z=0),"w"in l&&(l.w=0),null):(l.setScalar(0),l.addScaledVector(r,gi.x),l.addScaledVector(a,gi.y),l.addScaledVector(o,gi.z),l)}static getInterpolatedAttribute(e,t,n,s,r,a){return Dc.setScalar(0),Nc.setScalar(0),Uc.setScalar(0),Dc.fromBufferAttribute(e,t),Nc.fromBufferAttribute(e,n),Uc.fromBufferAttribute(e,s),a.setScalar(0),a.addScaledVector(Dc,r.x),a.addScaledVector(Nc,r.y),a.addScaledVector(Uc,r.z),a}static isFrontFacing(e,t,n,s){return Gn.subVectors(n,t),mi.subVectors(e,t),Gn.cross(mi).dot(s)<0}set(e,t,n){return this.a.copy(e),this.b.copy(t),this.c.copy(n),this}setFromPointsAndIndices(e,t,n,s){return this.a.copy(e[t]),this.b.copy(e[n]),this.c.copy(e[s]),this}setFromAttributeAndIndices(e,t,n,s){return this.a.fromBufferAttribute(e,t),this.b.fromBufferAttribute(e,n),this.c.fromBufferAttribute(e,s),this}clone(){return new this.constructor().copy(this)}copy(e){return this.a.copy(e.a),this.b.copy(e.b),this.c.copy(e.c),this}getArea(){return Gn.subVectors(this.c,this.b),mi.subVectors(this.a,this.b),Gn.cross(mi).length()*.5}getMidpoint(e){return e.addVectors(this.a,this.b).add(this.c).multiplyScalar(1/3)}getNormal(e){return i.getNormal(this.a,this.b,this.c,e)}getPlane(e){return e.setFromCoplanarPoints(this.a,this.b,this.c)}getBarycoord(e,t){return i.getBarycoord(e,this.a,this.b,this.c,t)}getInterpolation(e,t,n,s,r){return i.getInterpolation(e,this.a,this.b,this.c,t,n,s,r)}containsPoint(e){return i.containsPoint(e,this.a,this.b,this.c)}isFrontFacing(e){return i.isFrontFacing(this.a,this.b,this.c,e)}intersectsBox(e){return e.intersectsTriangle(this)}closestPointToPoint(e,t){let n=this.a,s=this.b,r=this.c,a,o;ws.subVectors(s,n),As.subVectors(r,n),Ic.subVectors(e,n);let l=ws.dot(Ic),c=As.dot(Ic);if(l<=0&&c<=0)return t.copy(n);Pc.subVectors(e,s);let h=ws.dot(Pc),f=As.dot(Pc);if(h>=0&&f<=h)return t.copy(s);let u=l*f-h*c;if(u<=0&&l>=0&&h<=0)return a=l/(l-h),t.copy(n).addScaledVector(ws,a);Lc.subVectors(e,r);let d=ws.dot(Lc),g=As.dot(Lc);if(g>=0&&d<=g)return t.copy(r);let M=d*c-l*g;if(M<=0&&c>=0&&g<=0)return o=c/(c-g),t.copy(n).addScaledVector(As,o);let m=h*g-d*f;if(m<=0&&f-h>=0&&d-g>=0)return zu.subVectors(r,s),o=(f-h)/(f-h+(d-g)),t.copy(s).addScaledVector(zu,o);let p=1/(m+M+u);return a=M*p,o=u*p,t.copy(n).addScaledVector(ws,a).addScaledVector(As,o)}equals(e){return e.a.equals(this.a)&&e.b.equals(this.b)&&e.c.equals(this.c)}},oi=class{constructor(e=new P(1/0,1/0,1/0),t=new P(-1/0,-1/0,-1/0)){this.isBox3=!0,this.min=e,this.max=t}set(e,t){return this.min.copy(e),this.max.copy(t),this}setFromArray(e){this.makeEmpty();for(let t=0,n=e.length;t