three/build/three.min.js

JavaScript 3D library

// threejs.org/license
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e[0]*=t,e[3]*=t,e[6]*=t,e[1]*=t,e[4]*=t,e[7]*=t,e[2]*=t,e[5]*=t,e[8]*=t,this},e.determinant=function(){var t=this.elements,e=t[0],n=t[1],r=t[2],i=t[3],a=t[4],o=t[5],s=t[6],l=t[7],c=t[8];return e*a*c-e*o*l-n*i*c+n*o*s+r*i*l-r*a*s},e.invert=function(){var t=this.elements,e=t[0],n=t[1],r=t[2],i=t[3],a=t[4],o=t[5],s=t[6],l=t[7],c=t[8],u=c*a-o*l,h=o*s-c*i,d=l*i-a*s,p=e*u+n*h+r*d;if(0===p)return this.set(0,0,0,0,0,0,0,0,0);var f=1/p;return t[0]=u*f,t[1]=(r*l-c*n)*f,t[2]=(o*n-r*a)*f,t[3]=h*f,t[4]=(c*e-r*s)*f,t[5]=(r*i-o*e)*f,t[6]=d*f,t[7]=(n*s-l*e)*f,t[8]=(a*e-n*i)*f,this},e.transpose=function(){var t,e=this.elements;return t=e[1],e[1]=e[3],e[3]=t,t=e[2],e[2]=e[6],e[6]=t,t=e[5],e[5]=e[7],e[7]=t,this},e.getNormalMatrix=function(t){return this.setFromMatrix4(t).invert().transpose()},e.transposeIntoArray=function(t){var e=this.elements;return t[0]=e[0],t[1]=e[3],t[2]=e[6],t[3]=e[1],t[4]=e[4],t[5]=e[7],t[6]=e[2],t[7]=e[5],t[8]=e[8],this},e.setUvTransform=function(t,e,n,r,i,a,o){var s=Math.cos(i),l=Math.sin(i);return this.set(n*s,n*l,-n*(s*a+l*o)+a+t,-r*l,r*s,-r*(-l*a+s*o)+o+e,0,0,1),this},e.scale=function(t,e){var n=this.elements;return n[0]*=t,n[3]*=t,n[6]*=t,n[1]*=e,n[4]*=e,n[7]*=e,this},e.rotate=function(t){var e=Math.cos(t),n=Math.sin(t),r=this.elements,i=r[0],a=r[3],o=r[6],s=r[1],l=r[4],c=r[7];return r[0]=e*i+n*s,r[3]=e*a+n*l,r[6]=e*o+n*c,r[1]=-n*i+e*s,r[4]=-n*a+e*l,r[7]=-n*o+e*c,this},e.translate=function(t,e){var n=this.elements;return n[0]+=t*n[2],n[3]+=t*n[5],n[6]+=t*n[8],n[1]+=e*n[2],n[4]+=e*n[5],n[7]+=e*n[8],this},e.equals=function(t){for(var e=this.elements,n=t.elements,r=0;r<9;r++)if(e[r]!==n[r])return!1;return!0},e.fromArray=function(t,e){void 0===e&&(e=0);for(var n=0;n<9;n++)this.elements[n]=t[n+e];return this},e.toArray=function(t,e){void 0===t&&(t=[]),void 0===e&&(e=0);var n=this.elements;return t[e]=n[0],t[e+1]=n[1],t[e+2]=n[2],t[e+3]=n[3],t[e+4]=n[4],t[e+5]=n[5],t[e+6]=n[6],t[e+7]=n[7],t[e+8]=n[8],t},e.clone=function(){return(new this.constructor).fromArray(this.elements)},t}();_t.prototype.isMatrix3=!0;var bt={getDataURL:function(t){if(/^data:/i.test(t.src))return t.src;if("undefined"==typeof HTMLCanvasElement)return t.src;var e;if(t instanceof HTMLCanvasElement)e=t;else{void 0===xt&&(xt=document.createElementNS("http://www.w3.org/1999/xhtml","canvas")),xt.width=t.width,xt.height=t.height;var n=xt.getContext("2d");t instanceof ImageData?n.putImageData(t,0,0):n.drawImage(t,0,0,t.width,t.height),e=xt}return e.width>2048||e.height>2048?e.toDataURL("image/jpeg",.6):e.toDataURL("image/png")}},wt=0,Mt=function(t){function e(n,r,i,a,o,s,l,c,u,h){var p;return void 0===n&&(n=e.DEFAULT_IMAGE),void 0===r&&(r=e.DEFAULT_MAPPING),void 0===i&&(i=d),void 0===a&&(a=d),void 0===o&&(o=g),void 0===s&&(s=x),void 0===l&&(l=A),void 0===c&&(c=_),void 0===u&&(u=1),void 0===h&&(h=Y),p=t.call(this)||this,Object.defineProperty(ut(p),"id",{value:wt++}),p.uuid=gt.generateUUID(),p.name="",p.image=n,p.mipmaps=[],p.mapping=r,p.wrapS=i,p.wrapT=a,p.magFilter=o,p.minFilter=s,p.anisotropy=u,p.format=l,p.internalFormat=null,p.type=c,p.offset=new yt(0,0),p.repeat=new yt(1,1),p.center=new yt(0,0),p.rotation=0,p.matrixAutoUpdate=!0,p.matrix=new _t,p.generateMipmaps=!0,p.premultiplyAlpha=!1,p.flipY=!0,p.unpackAlignment=4,p.encoding=h,p.version=0,p.onUpdate=null,p}lt(e,t);var n=e.prototype;return n.updateMatrix=function(){this.matrix.setUvTransform(this.offset.x,this.offset.y,this.repeat.x,this.repeat.y,this.rotation,this.center.x,this.center.y)},n.clone=function(){return(new this.constructor).copy(this)},n.copy=function(t){return this.name=t.name,this.image=t.image,this.mipmaps=t.mipmaps.slice(0),this.mapping=t.mapping,this.wrapS=t.wrapS,this.wrapT=t.wrapT,this.magFilter=t.magFilter,this.minFilter=t.minFilter,this.anisotropy=t.anisotropy,this.format=t.format,this.internalFormat=t.internalFormat,this.type=t.type,this.offset.copy(t.offset),this.repeat.copy(t.repeat),this.center.copy(t.center),this.rotation=t.rotation,this.matrixAutoUpdate=t.matrixAutoUpdate,this.matrix.copy(t.matrix),this.generateMipmaps=t.generateMipmaps,this.premultiplyAlpha=t.premultiplyAlpha,this.flipY=t.flipY,this.unpackAlignment=t.unpackAlignment,this.encoding=t.encoding,this},n.toJSON=function(t){var e=void 0===t||"string"==typeof t;if(!e&&void 0!==t.textures[this.uuid])return t.textures[this.uuid];var n={metadata:{version:4.5,type:"Texture",generator:"Texture.toJSON"},uuid:this.uuid,name:this.name,mapping:this.mapping,repeat:[this.repeat.x,this.repeat.y],offset:[this.offset.x,this.offset.y],center:[this.center.x,this.center.y],rotation:this.rotation,wrap:[this.wrapS,this.wrapT],format:this.format,type:this.type,encoding:this.encoding,minFilter:this.minFilter,magFilter:this.magFilter,anisotropy:this.anisotropy,flipY:this.flipY,premultiplyAlpha:this.premultiplyAlpha,unpackAlignment:this.unpackAlignment};if(void 0!==this.image){var r=this.image;if(void 0===r.uuid&&(r.uuid=gt.generateUUID()),!e&&void 0===t.images[r.uuid]){var i;if(Array.isArray(r)){i=[];for(var a=0,o=r.length;a<o;a++)r[a].isDataTexture?i.push(St(r[a].image)):i.push(St(r[a]))}else i=St(r);t.images[r.uuid]={uuid:r.uuid,url:i}}n.image=r.uuid}return e||(t.textures[this.uuid]=n),n},n.dispose=function(){this.dispatchEvent({type:"dispose"})},n.transformUv=function(t){if(this.mapping!==i)return t;if(t.applyMatrix3(this.matrix),t.x<0||t.x>1)switch(this.wrapS){case h:t.x=t.x-Math.floor(t.x);break;case d:t.x=t.x<0?0:1;break;case p:1===Math.abs(Math.floor(t.x)%2)?t.x=Math.ceil(t.x)-t.x:t.x=t.x-Math.floor(t.x)}if(t.y<0||t.y>1)switch(this.wrapT){case h:t.y=t.y-Math.floor(t.y);break;case d:t.y=t.y<0?0:1;break;case p:1===Math.abs(Math.floor(t.y)%2)?t.y=Math.ceil(t.y)-t.y:t.y=t.y-Math.floor(t.y)}return this.flipY&&(t.y=1-t.y),t},st(e,[{key:"needsUpdate",set:function(t){!0===t&&this.version++}}]),e}(pt);function St(t){return"undefined"!=typeof HTMLImageElement&&t instanceof HTMLImageElement||"undefined"!=typeof HTMLCanvasElement&&t instanceof HTMLCanvasElement||"undefined"!=typeof ImageBitmap&&t instanceof ImageBitmap?bt.getDataURL(t):t.data?{data:Array.prototype.slice.call(t.data),width:t.width,height:t.height,type:t.data.constructor.name}:(console.warn("THREE.Texture: Unable to serialize Texture."),{})}Mt.DEFAULT_IMAGE=void 0,Mt.DEFAULT_MAPPING=i,Mt.prototype.isTexture=!0;var Tt=function(){function t(t,e,n,r){void 0===t&&(t=0),void 0===e&&(e=0),void 0===n&&(n=0),void 0===r&&(r=1),this.x=t,this.y=e,this.z=n,this.w=r}var e=t.prototype;return e.set=function(t,e,n,r){return this.x=t,this.y=e,this.z=n,this.w=r,this},e.setScalar=function(t){return this.x=t,this.y=t,this.z=t,this.w=t,this},e.setX=function(t){return this.x=t,this},e.setY=function(t){return this.y=t,this},e.setZ=function(t){return this.z=t,this},e.setW=function(t){return this.w=t,this},e.setComponent=function(t,e){switch(t){case 0:this.x=e;break;case 1:this.y=e;break;case 2:this.z=e;break;case 3:this.w=e;break;default:throw new Error("index is out of range: "+t)}return this},e.getComponent=function(t){switch(t){case 0:return this.x;case 1:return this.y;case 2:return this.z;case 3:return this.w;default:throw new Error("index is out of range: "+t)}},e.clone=function(){return new this.constructor(this.x,this.y,this.z,this.w)},e.copy=function(t){return this.x=t.x,this.y=t.y,this.z=t.z,this.w=void 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Use .addVectors( a, b ) instead."),this.addVectors(t,e)):(this.x+=t.x,this.y+=t.y,this.z+=t.z,this.w+=t.w,this)},e.addScalar=function(t){return this.x+=t,this.y+=t,this.z+=t,this.w+=t,this},e.addVectors=function(t,e){return this.x=t.x+e.x,this.y=t.y+e.y,this.z=t.z+e.z,this.w=t.w+e.w,this},e.addScaledVector=function(t,e){return this.x+=t.x*e,this.y+=t.y*e,this.z+=t.z*e,this.w+=t.w*e,this},e.sub=function(t,e){return void 0!==e?(console.warn("THREE.Vector4: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),this.subVectors(t,e)):(this.x-=t.x,this.y-=t.y,this.z-=t.z,this.w-=t.w,this)},e.subScalar=function(t){return this.x-=t,this.y-=t,this.z-=t,this.w-=t,this},e.subVectors=function(t,e){return this.x=t.x-e.x,this.y=t.y-e.y,this.z=t.z-e.z,this.w=t.w-e.w,this},e.multiply=function(t){return this.x*=t.x,this.y*=t.y,this.z*=t.z,this.w*=t.w,this},e.multiplyScalar=function(t){return this.x*=t,this.y*=t,this.z*=t,this.w*=t,this},e.applyMatrix4=function(t){var e=this.x,n=this.y,r=this.z,i=this.w,a=t.elements;return this.x=a[0]*e+a[4]*n+a[8]*r+a[12]*i,this.y=a[1]*e+a[5]*n+a[9]*r+a[13]*i,this.z=a[2]*e+a[6]*n+a[10]*r+a[14]*i,this.w=a[3]*e+a[7]*n+a[11]*r+a[15]*i,this},e.divideScalar=function(t){return this.multiplyScalar(1/t)},e.setAxisAngleFromQuaternion=function(t){this.w=2*Math.acos(t.w);var e=Math.sqrt(1-t.w*t.w);return e<1e-4?(this.x=1,this.y=0,this.z=0):(this.x=t.x/e,this.y=t.y/e,this.z=t.z/e),this},e.setAxisAngleFromRotationMatrix=function(t){var e,n,r,i,a=.01,o=.1,s=t.elements,l=s[0],c=s[4],u=s[8],h=s[1],d=s[5],p=s[9],f=s[2],m=s[6],v=s[10];if(Math.abs(c-h)<a&&Math.abs(u-f)<a&&Math.abs(p-m)<a){if(Math.abs(c+h)<o&&Math.abs(u+f)<o&&Math.abs(p+m)<o&&Math.abs(l+d+v-3)<o)return this.set(1,0,0,0),this;e=Math.PI;var g=(l+1)/2,y=(d+1)/2,x=(v+1)/2,_=(c+h)/4,b=(u+f)/4,w=(p+m)/4;return g>y&&g>x?g<a?(n=0,r=.707106781,i=.707106781):(r=_/(n=Math.sqrt(g)),i=b/n):y>x?y<a?(n=.707106781,r=0,i=.707106781):(n=_/(r=Math.sqrt(y)),i=w/r):x<a?(n=.707106781,r=.707106781,i=0):(n=b/(i=Math.sqrt(x)),r=w/i),this.set(n,r,i,e),this}var M=Math.sqrt((m-p)*(m-p)+(u-f)*(u-f)+(h-c)*(h-c));return Math.abs(M)<.001&&(M=1),this.x=(m-p)/M,this.y=(u-f)/M,this.z=(h-c)/M,this.w=Math.acos((l+d+v-1)/2),this},e.min=function(t){return this.x=Math.min(this.x,t.x),this.y=Math.min(this.y,t.y),this.z=Math.min(this.z,t.z),this.w=Math.min(this.w,t.w),this},e.max=function(t){return this.x=Math.max(this.x,t.x),this.y=Math.max(this.y,t.y),this.z=Math.max(this.z,t.z),this.w=Math.max(this.w,t.w),this},e.clamp=function(t,e){return this.x=Math.max(t.x,Math.min(e.x,this.x)),this.y=Math.max(t.y,Math.min(e.y,this.y)),this.z=Math.max(t.z,Math.min(e.z,this.z)),this.w=Math.max(t.w,Math.min(e.w,this.w)),this},e.clampScalar=function(t,e){return this.x=Math.max(t,Math.min(e,this.x)),this.y=Math.max(t,Math.min(e,this.y)),this.z=Math.max(t,Math.min(e,this.z)),this.w=Math.max(t,Math.min(e,this.w)),this},e.clampLength=function(t,e){var n=this.length();return this.divideScalar(n||1).multiplyScalar(Math.max(t,Math.min(e,n)))},e.floor=function(){return this.x=Math.floor(this.x),this.y=Math.floor(this.y),this.z=Math.floor(this.z),this.w=Math.floor(this.w),this},e.ceil=function(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this.z=Math.ceil(this.z),this.w=Math.ceil(this.w),this},e.round=function(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this.z=Math.round(this.z),this.w=Math.round(this.w),this},e.roundToZero=function(){return this.x=this.x<0?Math.ceil(this.x):Math.floor(this.x),this.y=this.y<0?Math.ceil(this.y):Math.floor(this.y),this.z=this.z<0?Math.ceil(this.z):Math.floor(this.z),this.w=this.w<0?Math.ceil(this.w):Math.floor(this.w),this},e.negate=function(){return this.x=-this.x,this.y=-this.y,this.z=-this.z,this.w=-this.w,this},e.dot=function(t){return this.x*t.x+this.y*t.y+this.z*t.z+this.w*t.w},e.lengthSq=function(){return this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w},e.length=function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z+this.w*this.w)},e.manhattanLength=function(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)+Math.abs(this.w)},e.normalize=function(){return this.divideScalar(this.length()||1)},e.setLength=function(t){return this.normalize().multiplyScalar(t)},e.lerp=function(t,e){return this.x+=(t.x-this.x)*e,this.y+=(t.y-this.y)*e,this.z+=(t.z-this.z)*e,this.w+=(t.w-this.w)*e,this},e.lerpVectors=function(t,e,n){return this.x=t.x+(e.x-t.x)*n,this.y=t.y+(e.y-t.y)*n,this.z=t.z+(e.z-t.z)*n,this.w=t.w+(e.w-t.w)*n,this},e.equals=function(t){return t.x===this.x&&t.y===this.y&&t.z===this.z&&t.w===this.w},e.fromArray=function(t,e){return void 0===e&&(e=0),this.x=t[e],this.y=t[e+1],this.z=t[e+2],this.w=t[e+3],this},e.toArray=function(t,e){return void 0===t&&(t=[]),void 0===e&&(e=0),t[e]=this.x,t[e+1]=this.y,t[e+2]=this.z,t[e+3]=this.w,t},e.fromBufferAttribute=function(t,e,n){return void 0!==n&&console.warn("THREE.Vector4: offset has been removed from .fromBufferAttribute()."),this.x=t.getX(e),this.y=t.getY(e),this.z=t.getZ(e),this.w=t.getW(e),this},e.random=function(){return this.x=Math.random(),this.y=Math.random(),this.z=Math.random(),this.w=Math.random(),this},st(t,[{key:"width",get:function(){return this.z},set:function(t){this.z=t}},{key:"height",get:function(){return this.w},set:function(t){this.w=t}}]),t}();Tt.prototype.isVector4=!0;var Et=function(t){function e(e,n,r){var i;return(i=t.call(this)||this).width=e,i.height=n,i.depth=1,i.scissor=new Tt(0,0,e,n),i.scissorTest=!1,i.viewport=new Tt(0,0,e,n),r=r||{},i.texture=new Mt(void 0,r.mapping,r.wrapS,r.wrapT,r.magFilter,r.minFilter,r.format,r.type,r.anisotropy,r.encoding),i.texture.image={},i.texture.image.width=e,i.texture.image.height=n,i.texture.image.depth=1,i.texture.generateMipmaps=void 0!==r.generateMipmaps&&r.generateMipmaps,i.texture.minFilter=void 0!==r.minFilter?r.minFilter:g,i.depthBuffer=void 0===r.depthBuffer||r.depthBuffer,i.stencilBuffer=void 0!==r.stencilBuffer&&r.stencilBuffer,i.depthTexture=void 0!==r.depthTexture?r.depthTexture:null,i}lt(e,t);var n=e.prototype;return n.setTexture=function(t){t.image={width:this.width,height:this.height,depth:this.depth},this.texture=t},n.setSize=function(t,e,n){void 0===n&&(n=1),this.width===t&&this.height===e&&this.depth===n||(this.width=t,this.height=e,this.depth=n,this.texture.image.width=t,this.texture.image.height=e,this.texture.image.depth=n,this.dispose()),this.viewport.set(0,0,t,e),this.scissor.set(0,0,t,e)},n.clone=function(){return(new this.constructor).copy(this)},n.copy=function(t){return this.width=t.width,this.height=t.height,this.depth=t.depth,this.viewport.copy(t.viewport),this.texture=t.texture.clone(),this.depthBuffer=t.depthBuffer,this.stencilBuffer=t.stencilBuffer,this.depthTexture=t.depthTexture,this},n.dispose=function(){this.dispatchEvent({type:"dispose"})},e}(pt);Et.prototype.isWebGLRenderTarget=!0;var At=function(t){function e(e,n,r){var i;return(i=t.call(this,e,n,r)||this).samples=4,i}return lt(e,t),e.prototype.copy=function(e){return t.prototype.copy.call(this,e),this.samples=e.samples,this},e}(Et);At.prototype.isWebGLMultisampleRenderTarget=!0;var Lt=function(){function t(t,e,n,r){void 0===t&&(t=0),void 0===e&&(e=0),void 0===n&&(n=0),void 0===r&&(r=1),this._x=t,this._y=e,this._z=n,this._w=r}t.slerp=function(t,e,n,r){return n.copy(t).slerp(e,r)},t.slerpFlat=function(t,e,n,r,i,a,o){var s=n[r+0],l=n[r+1],c=n[r+2],u=n[r+3],h=i[a+0],d=i[a+1],p=i[a+2],f=i[a+3];if(0===o)return t[e+0]=s,t[e+1]=l,t[e+2]=c,void(t[e+3]=u);if(1===o)return t[e+0]=h,t[e+1]=d,t[e+2]=p,void(t[e+3]=f);if(u!==f||s!==h||l!==d||c!==p){var m=1-o,v=s*h+l*d+c*p+u*f,g=v>=0?1:-1,y=1-v*v;if(y>Number.EPSILON){var x=Math.sqrt(y),_=Math.atan2(x,v*g);m=Math.sin(m*_)/x,o=Math.sin(o*_)/x}var b=o*g;if(s=s*m+h*b,l=l*m+d*b,c=c*m+p*b,u=u*m+f*b,m===1-o){var w=1/Math.sqrt(s*s+l*l+c*c+u*u);s*=w,l*=w,c*=w,u*=w}}t[e]=s,t[e+1]=l,t[e+2]=c,t[e+3]=u},t.multiplyQuaternionsFlat=function(t,e,n,r,i,a){var o=n[r],s=n[r+1],l=n[r+2],c=n[r+3],u=i[a],h=i[a+1],d=i[a+2],p=i[a+3];return t[e]=o*p+c*u+s*d-l*h,t[e+1]=s*p+c*h+l*u-o*d,t[e+2]=l*p+c*d+o*h-s*u,t[e+3]=c*p-o*u-s*h-l*d,t};var e=t.prototype;return e.set=function(t,e,n,r){return this._x=t,this._y=e,this._z=n,this._w=r,this._onChangeCallback(),this},e.clone=function(){return new this.constructor(this._x,this._y,this._z,this._w)},e.copy=function(t){return this._x=t.x,this._y=t.y,this._z=t.z,this._w=t.w,this._onChangeCallback(),this},e.setFromEuler=function(t,e){if(!t||!t.isEuler)throw new Error("THREE.Quaternion: .setFromEuler() now expects an Euler rotation rather than a Vector3 and order.");var n=t._x,r=t._y,i=t._z,a=t._order,o=Math.cos,s=Math.sin,l=o(n/2),c=o(r/2),u=o(i/2),h=s(n/2),d=s(r/2),p=s(i/2);switch(a){case"XYZ":this._x=h*c*u+l*d*p,this._y=l*d*u-h*c*p,this._z=l*c*p+h*d*u,this._w=l*c*u-h*d*p;break;case"YXZ":this._x=h*c*u+l*d*p,this._y=l*d*u-h*c*p,this._z=l*c*p-h*d*u,this._w=l*c*u+h*d*p;break;case"ZXY":this._x=h*c*u-l*d*p,this._y=l*d*u+h*c*p,this._z=l*c*p+h*d*u,this._w=l*c*u-h*d*p;break;case"ZYX":this._x=h*c*u-l*d*p,this._y=l*d*u+h*c*p,this._z=l*c*p-h*d*u,this._w=l*c*u+h*d*p;break;case"YZX":this._x=h*c*u+l*d*p,this._y=l*d*u+h*c*p,this._z=l*c*p-h*d*u,this._w=l*c*u-h*d*p;break;case"XZY":this._x=h*c*u-l*d*p,this._y=l*d*u-h*c*p,this._z=l*c*p+h*d*u,this._w=l*c*u+h*d*p;break;default:console.warn("THREE.Quaternion: .setFromEuler() encountered an unknown order: "+a)}return!1!==e&&this._onChangeCallback(),this},e.setFromAxisAngle=function(t,e){var n=e/2,r=Math.sin(n);return this._x=t.x*r,this._y=t.y*r,this._z=t.z*r,this._w=Math.cos(n),this._onChangeCallback(),this},e.setFromRotationMatrix=function(t){var e=t.elements,n=e[0],r=e[4],i=e[8],a=e[1],o=e[5],s=e[9],l=e[2],c=e[6],u=e[10],h=n+o+u;if(h>0){var d=.5/Math.sqrt(h+1);this._w=.25/d,this._x=(c-s)*d,this._y=(i-l)*d,this._z=(a-r)*d}else if(n>o&&n>u){var p=2*Math.sqrt(1+n-o-u);this._w=(c-s)/p,this._x=.25*p,this._y=(r+a)/p,this._z=(i+l)/p}else if(o>u){var f=2*Math.sqrt(1+o-n-u);this._w=(i-l)/f,this._x=(r+a)/f,this._y=.25*f,this._z=(s+c)/f}else{var m=2*Math.sqrt(1+u-n-o);this._w=(a-r)/m,this._x=(i+l)/m,this._y=(s+c)/m,this._z=.25*m}return this._onChangeCallback(),this},e.setFromUnitVectors=function(t,e){var n=t.dot(e)+1;return n<1e-6?(n=0,Math.abs(t.x)>Math.abs(t.z)?(this._x=-t.y,this._y=t.x,this._z=0,this._w=n):(this._x=0,this._y=-t.z,this._z=t.y,this._w=n)):(this._x=t.y*e.z-t.z*e.y,this._y=t.z*e.x-t.x*e.z,this._z=t.x*e.y-t.y*e.x,this._w=n),this.normalize()},e.angleTo=function(t){return 2*Math.acos(Math.abs(gt.clamp(this.dot(t),-1,1)))},e.rotateTowards=function(t,e){var n=this.angleTo(t);if(0===n)return this;var r=Math.min(1,e/n);return this.slerp(t,r),this},e.identity=function(){return this.set(0,0,0,1)},e.invert=function(){return this.conjugate()},e.conjugate=function(){return this._x*=-1,this._y*=-1,this._z*=-1,this._onChangeCallback(),this},e.dot=function(t){return this._x*t._x+this._y*t._y+this._z*t._z+this._w*t._w},e.lengthSq=function(){return this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w},e.length=function(){return Math.sqrt(this._x*this._x+this._y*this._y+this._z*this._z+this._w*this._w)},e.normalize=function(){var t=this.length();return 0===t?(this._x=0,this._y=0,this._z=0,this._w=1):(t=1/t,this._x=this._x*t,this._y=this._y*t,this._z=this._z*t,this._w=this._w*t),this._onChangeCallback(),this},e.multiply=function(t,e){return void 0!==e?(console.warn("THREE.Quaternion: .multiply() now only accepts one argument. Use .multiplyQuaternions( a, b ) instead."),this.multiplyQuaternions(t,e)):this.multiplyQuaternions(this,t)},e.premultiply=function(t){return this.multiplyQuaternions(t,this)},e.multiplyQuaternions=function(t,e){var n=t._x,r=t._y,i=t._z,a=t._w,o=e._x,s=e._y,l=e._z,c=e._w;return this._x=n*c+a*o+r*l-i*s,this._y=r*c+a*s+i*o-n*l,this._z=i*c+a*l+n*s-r*o,this._w=a*c-n*o-r*s-i*l,this._onChangeCallback(),this},e.slerp=function(t,e){if(0===e)return this;if(1===e)return this.copy(t);var n=this._x,r=this._y,i=this._z,a=this._w,o=a*t._w+n*t._x+r*t._y+i*t._z;if(o<0?(this._w=-t._w,this._x=-t._x,this._y=-t._y,this._z=-t._z,o=-o):this.copy(t),o>=1)return this._w=a,this._x=n,this._y=r,this._z=i,this;var s=1-o*o;if(s<=Number.EPSILON){var l=1-e;return this._w=l*a+e*this._w,this._x=l*n+e*this._x,this._y=l*r+e*this._y,this._z=l*i+e*this._z,this.normalize(),this._onChangeCallback(),this}var c=Math.sqrt(s),u=Math.atan2(c,o),h=Math.sin((1-e)*u)/c,d=Math.sin(e*u)/c;return this._w=a*h+this._w*d,this._x=n*h+this._x*d,this._y=r*h+this._y*d,this._z=i*h+this._z*d,this._onChangeCallback(),this},e.equals=function(t){return t._x===this._x&&t._y===this._y&&t._z===this._z&&t._w===this._w},e.fromArray=function(t,e){return void 0===e&&(e=0),this._x=t[e],this._y=t[e+1],this._z=t[e+2],this._w=t[e+3],this._onChangeCallback(),this},e.toArray=function(t,e){return void 0===t&&(t=[]),void 0===e&&(e=0),t[e]=this._x,t[e+1]=this._y,t[e+2]=this._z,t[e+3]=this._w,t},e.fromBufferAttribute=function(t,e){return this._x=t.getX(e),this._y=t.getY(e),this._z=t.getZ(e),this._w=t.getW(e),this},e._onChange=function(t){return this._onChangeCallback=t,this},e._onChangeCallback=function(){},st(t,[{key:"x",get:function(){return this._x},set:function(t){this._x=t,this._onChangeCallback()}},{key:"y",get:function(){return this._y},set:function(t){this._y=t,this._onChangeCallback()}},{key:"z",get:function(){return this._z},set:function(t){this._z=t,this._onChangeCallback()}},{key:"w",get:function(){return this._w},set:function(t){this._w=t,this._onChangeCallback()}}]),t}();Lt.prototype.isQuaternion=!0;var Rt=function(){function t(t,e,n){void 0===t&&(t=0),void 0===e&&(e=0),void 0===n&&(n=0),this.x=t,this.y=e,this.z=n}var e=t.prototype;return e.set=function(t,e,n){return void 0===n&&(n=this.z),this.x=t,this.y=e,this.z=n,this},e.setScalar=function(t){return this.x=t,this.y=t,this.z=t,this},e.setX=function(t){return this.x=t,this},e.setY=function(t){return this.y=t,this},e.setZ=function(t){return this.z=t,this},e.setComponent=function(t,e){switch(t){case 0:this.x=e;break;case 1:this.y=e;break;case 2:this.z=e;break;default:throw new Error("index is out of range: "+t)}return this},e.getComponent=function(t){switch(t){case 0:return this.x;case 1:return this.y;case 2:return this.z;default:throw new Error("index is out of range: "+t)}},e.clone=function(){return new this.constructor(this.x,this.y,this.z)},e.copy=function(t){return this.x=t.x,this.y=t.y,this.z=t.z,this},e.add=function(t,e){return void 0!==e?(console.warn("THREE.Vector3: .add() now only accepts one argument. Use .addVectors( a, b ) instead."),this.addVectors(t,e)):(this.x+=t.x,this.y+=t.y,this.z+=t.z,this)},e.addScalar=function(t){return this.x+=t,this.y+=t,this.z+=t,this},e.addVectors=function(t,e){return this.x=t.x+e.x,this.y=t.y+e.y,this.z=t.z+e.z,this},e.addScaledVector=function(t,e){return this.x+=t.x*e,this.y+=t.y*e,this.z+=t.z*e,this},e.sub=function(t,e){return void 0!==e?(console.warn("THREE.Vector3: .sub() now only accepts one argument. Use .subVectors( a, b ) instead."),this.subVectors(t,e)):(this.x-=t.x,this.y-=t.y,this.z-=t.z,this)},e.subScalar=function(t){return this.x-=t,this.y-=t,this.z-=t,this},e.subVectors=function(t,e){return this.x=t.x-e.x,this.y=t.y-e.y,this.z=t.z-e.z,this},e.multiply=function(t,e){return void 0!==e?(console.warn("THREE.Vector3: .multiply() now only accepts one argument. Use .multiplyVectors( a, b ) instead."),this.multiplyVectors(t,e)):(this.x*=t.x,this.y*=t.y,this.z*=t.z,this)},e.multiplyScalar=function(t){return this.x*=t,this.y*=t,this.z*=t,this},e.multiplyVectors=function(t,e){return this.x=t.x*e.x,this.y=t.y*e.y,this.z=t.z*e.z,this},e.applyEuler=function(t){return t&&t.isEuler||console.error("THREE.Vector3: .applyEuler() now expects an Euler rotation rather than a Vector3 and order."),this.applyQuaternion(Pt.setFromEuler(t))},e.applyAxisAngle=function(t,e){return this.applyQuaternion(Pt.setFromAxisAngle(t,e))},e.applyMatrix3=function(t){var e=this.x,n=this.y,r=this.z,i=t.elements;return this.x=i[0]*e+i[3]*n+i[6]*r,this.y=i[1]*e+i[4]*n+i[7]*r,this.z=i[2]*e+i[5]*n+i[8]*r,this},e.applyNormalMatrix=function(t){return this.applyMatrix3(t).normalize()},e.applyMatrix4=function(t){var e=this.x,n=this.y,r=this.z,i=t.elements,a=1/(i[3]*e+i[7]*n+i[11]*r+i[15]);return this.x=(i[0]*e+i[4]*n+i[8]*r+i[12])*a,this.y=(i[1]*e+i[5]*n+i[9]*r+i[13])*a,this.z=(i[2]*e+i[6]*n+i[10]*r+i[14])*a,this},e.applyQuaternion=function(t){var e=this.x,n=this.y,r=this.z,i=t.x,a=t.y,o=t.z,s=t.w,l=s*e+a*r-o*n,c=s*n+o*e-i*r,u=s*r+i*n-a*e,h=-i*e-a*n-o*r;return this.x=l*s+h*-i+c*-o-u*-a,this.y=c*s+h*-a+u*-i-l*-o,this.z=u*s+h*-o+l*-a-c*-i,this},e.project=function(t){return this.applyMatrix4(t.matrixWorldInverse).applyMatrix4(t.projectionMatrix)},e.unproject=function(t){return this.applyMatrix4(t.projectionMatrixInverse).applyMatrix4(t.matrixWorld)},e.transformDirection=function(t){var e=this.x,n=this.y,r=this.z,i=t.elements;return this.x=i[0]*e+i[4]*n+i[8]*r,this.y=i[1]*e+i[5]*n+i[9]*r,this.z=i[2]*e+i[6]*n+i[10]*r,this.normalize()},e.divide=function(t){return this.x/=t.x,this.y/=t.y,this.z/=t.z,this},e.divideScalar=function(t){return this.multiplyScalar(1/t)},e.min=function(t){return this.x=Math.min(this.x,t.x),this.y=Math.min(this.y,t.y),this.z=Math.min(this.z,t.z),this},e.max=function(t){return this.x=Math.max(this.x,t.x),this.y=Math.max(this.y,t.y),this.z=Math.max(this.z,t.z),this},e.clamp=function(t,e){return this.x=Math.max(t.x,Math.min(e.x,this.x)),this.y=Math.max(t.y,Math.min(e.y,this.y)),this.z=Math.max(t.z,Math.min(e.z,this.z)),this},e.clampScalar=function(t,e){return this.x=Math.max(t,Math.min(e,this.x)),this.y=Math.max(t,Math.min(e,this.y)),this.z=Math.max(t,Math.min(e,this.z)),this},e.clampLength=function(t,e){var n=this.length();return this.divideScalar(n||1).multiplyScalar(Math.max(t,Math.min(e,n)))},e.floor=function(){return this.x=Math.floor(this.x),this.y=Math.floor(this.y),this.z=Math.floor(this.z),this},e.ceil=function(){return this.x=Math.ceil(this.x),this.y=Math.ceil(this.y),this.z=Math.ceil(this.z),this},e.round=function(){return this.x=Math.round(this.x),this.y=Math.round(this.y),this.z=Math.round(this.z),this},e.roundToZero=function(){return this.x=this.x<0?Math.ceil(this.x):Math.floor(this.x),this.y=this.y<0?Math.ceil(this.y):Math.floor(this.y),this.z=this.z<0?Math.ceil(this.z):Math.floor(this.z),this},e.negate=function(){return this.x=-this.x,this.y=-this.y,this.z=-this.z,this},e.dot=function(t){return this.x*t.x+this.y*t.y+this.z*t.z},e.lengthSq=function(){return this.x*this.x+this.y*this.y+this.z*this.z},e.length=function(){return Math.sqrt(this.x*this.x+this.y*this.y+this.z*this.z)},e.manhattanLength=function(){return Math.abs(this.x)+Math.abs(this.y)+Math.abs(this.z)},e.normalize=function(){return this.divideScalar(this.length()||1)},e.setLength=function(t){return this.normalize().multiplyScalar(t)},e.lerp=function(t,e){return this.x+=(t.x-this.x)*e,this.y+=(t.y-this.y)*e,this.z+=(t.z-this.z)*e,this},e.lerpVectors=function(t,e,n){return this.x=t.x+(e.x-t.x)*n,this.y=t.y+(e.y-t.y)*n,this.z=t.z+(e.z-t.z)*n,this},e.cross=function(t,e){return void 0!==e?(console.warn("THREE.Vector3: .cross() now only accepts one argument. Use .crossVectors( a, b ) instead."),this.crossVectors(t,e)):this.crossVectors(this,t)},e.crossVectors=function(t,e){var n=t.x,r=t.y,i=t.z,a=e.x,o=e.y,s=e.z;return this.x=r*s-i*o,this.y=i*a-n*s,this.z=n*o-r*a,this},e.projectOnVector=function(t){var e=t.lengthSq();if(0===e)return this.set(0,0,0);var n=t.dot(this)/e;return this.copy(t).multiplyScalar(n)},e.projectOnPlane=function(t){return Ct.copy(this).projectOnVector(t),this.sub(Ct)},e.reflect=function(t){return this.sub(Ct.copy(t).multiplyScalar(2*this.dot(t)))},e.angleTo=function(t){var e=Math.sqrt(this.lengthSq()*t.lengthSq());if(0===e)return Math.PI/2;var n=this.dot(t)/e;return Math.acos(gt.clamp(n,-1,1))},e.distanceTo=function(t){return Math.sqrt(this.distanceToSquared(t))},e.distanceToSquared=function(t){var e=this.x-t.x,n=this.y-t.y,r=this.z-t.z;return e*e+n*n+r*r},e.manhattanDistanceTo=function(t){return Math.abs(this.x-t.x)+Math.abs(this.y-t.y)+Math.abs(this.z-t.z)},e.setFromSpherical=function(t){return this.setFromSphericalCoords(t.radius,t.phi,t.theta)},e.setFromSphericalCoords=function(t,e,n){var r=Math.sin(e)*t;return this.x=r*Math.sin(n),this.y=Math.cos(e)*t,this.z=r*Math.cos(n),this},e.setFromCylindrical=function(t){return this.setFromCylindricalCoords(t.radius,t.theta,t.y)},e.setFromCylindricalCoords=function(t,e,n){return this.x=t*Math.sin(e),this.y=n,this.z=t*Math.cos(e),this},e.setFromMatrixPosition=function(t){var e=t.elements;return this.x=e[12],this.y=e[13],this.z=e[14],this},e.setFromMatrixScale=function(t){var e=this.setFromMatrixColumn(t,0).length(),n=this.setFromMatrixColumn(t,1).length(),r=this.setFromMatrixColumn(t,2).length();return this.x=e,this.y=n,this.z=r,this},e.setFromMatrixColumn=function(t,e){return this.fromArray(t.elements,4*e)},e.setFromMatrix3Column=function(t,e){return this.fromArray(t.elements,3*e)},e.equals=function(t){return t.x===this.x&&t.y===this.y&&t.z===this.z},e.fromArray=function(t,e){return void 0===e&&(e=0),this.x=t[e],this.y=t[e+1],this.z=t[e+2],this},e.toArray=function(t,e){return void 0===t&&(t=[]),void 0===e&&(e=0),t[e]=this.x,t[e+1]=this.y,t[e+2]=this.z,t},e.fromBufferAttribute=function(t,e,n){return void 0!==n&&console.warn("THREE.Vector3: offset has been removed from .fromBufferAttribute()."),this.x=t.getX(e),this.y=t.getY(e),this.z=t.getZ(e),this},e.random=function(){return this.x=Math.random(),this.y=Math.random(),this.z=Math.random(),this},t}();Rt.prototype.isVector3=!0;var Ct=new Rt,Pt=new Lt,Dt=function(){function t(t,e){void 0===t&&(t=new Rt(1/0,1/0,1/0)),void 0===e&&(e=new Rt(-1/0,-1/0,-1/0)),this.min=t,this.max=e}var e=t.prototype;return e.set=function(t,e){return this.min.copy(t),this.max.copy(e),this},e.setFromArray=function(t){for(var e=1/0,n=1/0,r=1/0,i=-1/0,a=-1/0,o=-1/0,s=0,l=t.length;s<l;s+=3){var c=t[s],u=t[s+1],h=t[s+2];c<e&&(e=c),u<n&&(n=u),h<r&&(r=h),c>i&&(i=c),u>a&&(a=u),h>o&&(o=h)}return this.min.set(e,n,r),this.max.set(i,a,o),this},e.setFromBufferAttribute=function(t){for(var e=1/0,n=1/0,r=1/0,i=-1/0,a=-1/0,o=-1/0,s=0,l=t.count;s<l;s++){var c=t.getX(s),u=t.getY(s),h=t.getZ(s);c<e&&(e=c),u<n&&(n=u),h<r&&(r=h),c>i&&(i=c),u>a&&(a=u),h>o&&(o=h)}return this.min.set(e,n,r),this.max.set(i,a,o),this},e.setFromPoints=function(t){this.makeEmpty();for(var e=0,n=t.length;e<n;e++)this.expandByPoint(t[e]);return this},e.setFromCenterAndSize=function(t,e){var n=Nt.copy(e).multiplyScalar(.5);return this.min.copy(t).sub(n),this.max.copy(t).add(n),this},e.setFromObject=function(t){return this.makeEmpty(),this.expandByObject(t)},e.clone=function(){return(new this.constructor).copy(this)},e.copy=function(t){return this.min.copy(t.min),this.max.copy(t.max),this},e.makeEmpty=function(){return this.min.x=this.min.y=this.min.z=1/0,this.max.x=this.max.y=this.max.z=-1/0,this},e.isEmpty=function(){return this.max.x<this.min.x||this.max.y<this.min.y||this.max.z<this.min.z},e.getCenter=function(t){return void 0===t&&(console.warn("THREE.Box3: .getCenter() target is now required"),t=new Rt),this.isEmpty()?t.set(0,0,0):t.addVectors(this.min,this.max).multiplyScalar(.5)},e.getSize=function(t){return void 0===t&&(console.warn("THREE.Box3: .getSize() target is now required"),t=new Rt),this.isEmpty()?t.set(0,0,0):t.subVectors(this.max,this.min)},e.expandByPoint=function(t){return this.min.min(t),this.max.max(t),this},e.expandByVector=function(t){return this.min.sub(t),this.max.add(t),this},e.expandByScalar=function(t){return this.min.addScalar(-t),this.max.addScalar(t),this},e.expandByObject=function(t){t.updateWorldMatrix(!1,!1);var e=t.geometry;void 0!==e&&(null===e.boundingBox&&e.computeBoundingBox(),Bt.copy(e.boundingBox),Bt.applyMatrix4(t.matrixWorld),this.union(Bt));for(var n=t.children,r=0,i=n.length;r<i;r++)this.expandByObject(n[r]);return this},e.containsPoint=function(t){return!(t.x<this.min.x||t.x>this.max.x||t.y<this.min.y||t.y>this.max.y||t.z<this.min.z||t.z>this.max.z)},e.containsBox=function(t){return this.min.x<=t.min.x&&t.max.x<=this.max.x&&this.min.y<=t.min.y&&t.max.y<=this.max.y&&this.min.z<=t.min.z&&t.max.z<=this.max.z},e.getParameter=function(t,e){return void 0===e&&(console.warn("THREE.Box3: .getParameter() target is now required"),e=new Rt),e.set((t.x-this.min.x)/(this.max.x-this.min.x),(t.y-this.min.y)/(this.max.y-this.min.y),(t.z-this.min.z)/(this.max.z-this.min.z))},e.intersectsBox=function(t){return!(t.max.x<this.min.x||t.min.x>this.max.x||t.max.y<this.min.y||t.min.y>this.max.y||t.max.z<this.min.z||t.min.z>this.max.z)},e.intersectsSphere=function(t){return this.clampPoint(t.center,Nt),Nt.distanceToSquared(t.center)<=t.radius*t.radius},e.intersectsPlane=function(t){var e,n;return t.normal.x>0?(e=t.normal.x*this.min.x,n=t.normal.x*this.max.x):(e=t.normal.x*this.max.x,n=t.normal.x*this.min.x),t.normal.y>0?(e+=t.normal.y*this.min.y,n+=t.normal.y*this.max.y):(e+=t.normal.y*this.max.y,n+=t.normal.y*this.min.y),t.normal.z>0?(e+=t.normal.z*this.min.z,n+=t.normal.z*this.max.z):(e+=t.normal.z*this.max.z,n+=t.normal.z*this.min.z),e<=-t.constant&&n>=-t.constant},e.intersectsTriangle=function(t){if(this.isEmpty())return!1;this.getCenter(kt),Vt.subVectors(this.max,kt),Ot.subVectors(t.a,kt),zt.subVectors(t.b,kt),Ft.subVectors(t.c,kt),Ht.subVectors(zt,Ot),Gt.subVectors(Ft,zt),Ut.subVectors(Ot,Ft);var e=[0,-Ht.z,Ht.y,0,-Gt.z,Gt.y,0,-Ut.z,Ut.y,Ht.z,0,-H