Scalar(2*this.dot(e)))}angleTo(e){let t=Math.sqrt(this.lengthSq()*e.lengthSq());if(t===0)return Math.PI/2;let n=this.dot(e)/t;return Math.acos(st(n,-1,1))}distanceTo(e){return Math.sqrt(this.distanceToSquared(e))}distanceToSquared(e){let t=this.x-e.x,n=this.y-e.y,s=this.z-e.z;return t*t+n*n+s*s}manhattanDistanceTo(e){return Math.abs(this.x-e.x)+Math.abs(this.y-e.y)+Math.abs(this.z-e.z)}setFromSpherical(e){return this.setFromSphericalCoords(e.radius,e.phi,e.theta)}setFromSphericalCoords(e,t,n){let s=Math.sin(t)*e;return this.x=s*Math.sin(n),this.y=Math.cos(t)*e,this.z=s*Math.cos(n),this}setFromCylindrical(e){return this.setFromCylindricalCoords(e.radius,e.theta,e.y)}setFromCylindricalCoords(e,t,n){return this.x=e*Math.sin(t),this.y=n,this.z=e*Math.cos(t),this}setFromMatrixPosition(e){let t=e.elements;return this.x=t[12],this.y=t[13],this.z=t[14],this}setFromMatrixScale(e){let t=this.setFromMatrixColumn(e,0).length(),n=this.setFromMatrixColumn(e,1).length(),s=this.setFromMatrixColumn(e,2).length();return this.x=t,this.y=n,this.z=s,this}setFromMatrixColumn(e,t){return this.fromArray(e.elements,t*4)}setFromMatrix3Column(e,t){return this.fromArray(e.elements,t*3)}setFromEuler(e){return this.x=e._x,this.y=e._y,this.z=e._z,this}setFromColor(e){return this.x=e.r,this.y=e.g,this.z=e.b,this}equals(e){return e.x===this.x&&e.y===this.y&&e.z===this.z}fromArray(e,t=0){return this.x=e[t],this.y=e[t+1],this.z=e[t+2],this}toArray(e=[],t=0){return e[t]=this.x,e[t+1]=this.y,e[t+2]=this.z,e}fromBufferAttribute(e,t){return this.x=e.getX(t),this.y=e.getY(t),this.z=e.getZ(t),this}random(){return this.x=Math.random(),this.y=Math.random(),this.z=Math.random(),this}randomDirection(){let e=Math.random()*Math.PI*2,t=Math.random()*2-1,n=Math.sqrt(1-t*t);return this.x=n*Math.cos(e),this.y=t,this.z=n*Math.sin(e),this}*[Symbol.iterator](){yield this.x,yield this.y,yield this.z}};Dh.prototype.isVector3=!0;var P=Dh,bc=new P,Cu=new fn,Nh=class Nh{constructor(e,t,n,s,r,a,o,l,c){this.elements=[1,0,0,0,1,0,0,0,1],e!==void 0&&this.set(e,t,n,s,r,a,o,l,c)}set(e,t,n,s,r,a,o,l,c){let h=this.elements;return h[0]=e,h[1]=s,h[2]=o,h[3]=t,h[4]=r,h[5]=l,h[6]=n,h[7]=a,h[8]=c,this}identity(){return this.set(1,0,0,0,1,0,0,0,1),this}copy(e){let t=this.elements,n=e.elements;return t[0]=n[0],t[1]=n[1],t[2]=n[2],t[3]=n[3],t[4]=n[4],t[5]=n[5],t[6]=n[6],t[7]=n[7],t[8]=n[8],this}extractBasis(e,t,n){return e.setFromMatrix3Column(this,0),t.setFromMatrix3Column(this,1),n.setFromMatrix3Column(this,2),this}setFromMatrix4(e){let t=e.elements;return this.set(t[0],t[4],t[8],t[1],t[5],t[9],t[2],t[6],t[10]),this}multiply(e){return this.multiplyMatrices(this,e)}premultiply(e){return this.multiplyMatrices(e,this)}multiplyMatrices(e,t){let n=e.elements,s=t.elements,r=this.elements,a=n[0],o=n[3],l=n[6],c=n[1],h=n[4],f=n[7],u=n[2],d=n[5],g=n[8],M=s[0],m=s[3],p=s[6],b=s[1],A=s[4],v=s[7],T=s[2],E=s[5],C=s[8];return r[0]=a*M+o*b+l*T,r[3]=a*m+o*A+l*E,r[6]=a*p+o*v+l*C,r[1]=c*M+h*b+f*T,r[4]=c*m+h*A+f*E,r[7]=c*p+h*v+f*C,r[2]=u*M+d*b+g*T,r[5]=u*m+d*A+g*E,r[8]=u*p+d*v+g*C,this}multiplyScalar(e){let t=this.elements;return t[0]*=e,t[3]*=e,t[6]*=e,t[1]*=e,t[4]*=e,t[7]*=e,t[2]*=e,t[5]*=e,t[8]*=e,this}determinant(){let e=this.elements,t=e[0],n=e[1],s=e[2],r=e[3],a=e[4],o=e[5],l=e[6],c=e[7],h=e[8];return t*a*h-t*o*c-n*r*h+n*o*l+s*r*c-s*a*l}invert(){let e=this.elements,t=e[0],n=e[1],s=e[2],r=e[3],a=e[4],o=e[5],l=e[6],c=e[7],h=e[8],f=h*a-o*c,u=o*l-h*r,d=c*r-a*l,g=t*f+n*u+s*d;if(g===0)return this.set(0,0,0,0,0,0,0,0,0);let M=1/g;return e[0]=f*M,e[1]=(s*c-h*n)*M,e[2]=(o*n-s*a)*M,e[3]=u*M,e[4]=(h*t-s*l)*M,e[5]=(s*r-o*t)*M,e[6]=d*M,e[7]=(n*l-c*t)*M,e[8]=(a*t-n*r)*M,this}transpose(){let e,t=this.elements;return e=t[1],t[1]=t[3],t[3]=e,e=t[2],t[2]=t[6],t[6]=e,e=t[5],t[5]=t[7],t[7]=e,this}getNormalMatrix(e){return this.setFromMatrix4(e).invert().transpose()}transposeIntoArray(e){let t=this.elements;return e[0]=t[0],e[1]=t[3],e[2]=t[6],e[3]=t[1],e[4]=t[4],e[5]=t[7],e[6]=t[2],e[7]=t[5],e[8]=t[8],this}setUvTransform(e,t,n,s,r,a,o){let l=Math.cos(r),c=Math.sin(r);return this.set(n*l,n*c,-n*(l*a+c*o)+a+e,-s*c,s*l,-s*(-c*a+l*o)+o+t,0,0,1),this}scale(e,t){return ss("Matrix3: .scale() is deprecated. Use .makeScale() instead."),this.premultiply(Ec.makeScale(e,t)),this}rotate(e){return ss("Matrix3: .rotate() is deprecated. Use .makeRotation() instead."),this.premultiply(Ec.makeRotation(-e)),this}translate(e,t){return ss("Matrix3: .translate() is deprecated. Use .makeTranslation() instead."),this.premultiply(Ec.makeTranslation(e,t)),this}makeTranslation(e,t){return e.isVector2?this.set(1,0,e.x,0,1,e.y,0,0,1):this.set(1,0,e,0,1,t,0,0,1),this}makeRotation(e){let t=Math.cos(e),n=Math.sin(e);return this.set(t,-n,0,n,t,0,0,0,1),this}makeScale(e,t){return this.set(e,0,0,0,t,0,0,0,1),this}equals(e){let t=this.elements,n=e.elements;for(let s=0;s<9;s++)if(t[s]!==n[s])return!1;return!0}fromArray(e,t=0){for(let n=0;n<9;n++)this.elements[n]=e[n+t];return this}toArray(e=[],t=0){let n=this.eleme