diff --git a/build/three.js b/build/three.js
index d731683e47f135609c80126c0c1d5d92ca68e874..5477219052f46dec823fc06530b5d54c13da4345 100644
--- a/build/three.js
+++ b/build/three.js
@@ -8557,13 +8557,13 @@ THREE.BufferGeometry.prototype = {
 
 		}
 
-		if ( this.boundingBox instanceof THREE.Box3 ) {
+		if ( this.boundingBox !== null ) {
 
 			this.computeBoundingBox();
 
 		}
 
-		if ( this.boundingSphere instanceof THREE.Sphere ) {
+		if ( this.boundingSphere !== null ) {
 
 			this.computeBoundingSphere();
 
@@ -8573,7 +8573,13 @@ THREE.BufferGeometry.prototype = {
 
 	center: function () {
 
-		// TODO
+		this.computeBoundingBox();
+
+		var offset = this.boundingBox.center().negate();
+
+		this.applyMatrix( new THREE.Matrix4().setPosition( offset ) );
+
+		return offset;
 
 	},
 
@@ -9369,13 +9375,7 @@ THREE.BufferGeometry.prototype = {
 
 			var attribute = attributes[ key ];
 
-			var array = [], typeArray = attribute.array;
-
-			for ( var i = 0, l = typeArray.length; i < l; i ++ ) {
-
-				array[ i ] = typeArray[ i ];
-
-			}
+			var array = Array.prototype.slice.call( attribute.array );
 
 			output.data.attributes[ key ] = {
 				itemSize: attribute.itemSize,
@@ -9528,18 +9528,21 @@ THREE.Geometry.prototype = {
 
 		}
 
-		if ( this.boundingBox instanceof THREE.Box3 ) {
+		if ( this.boundingBox !== null ) {
 
 			this.computeBoundingBox();
 
 		}
 
-		if ( this.boundingSphere instanceof THREE.Sphere ) {
+		if ( this.boundingSphere !== null ) {
 
 			this.computeBoundingSphere();
 
 		}
 
+		this.verticesNeedUpdate = true;
+		this.normalsNeedUpdate = true;
+
 	},
 
 	fromBufferGeometry: function ( geometry ) {
@@ -9636,13 +9639,9 @@ THREE.Geometry.prototype = {
 
 		this.computeBoundingBox();
 
-		var offset = new THREE.Vector3();
-
-		offset.addVectors( this.boundingBox.min, this.boundingBox.max );
-		offset.multiplyScalar( - 0.5 );
+		var offset = this.boundingBox.center().negate();
 
-		this.applyMatrix( new THREE.Matrix4().makeTranslation( offset.x, offset.y, offset.z ) );
-		this.computeBoundingBox();
+		this.applyMatrix( new THREE.Matrix4().setPosition( offset ) );
 
 		return offset;
 
diff --git a/build/three.min.js b/build/three.min.js
index 7823c76477e3f16a3d0ec13798e134811f23bb9f..99a89150589a76551a9a73cd56b58f33d78e53cd 100644
--- a/build/three.min.js
+++ b/build/three.min.js
@@ -185,47 +185,47 @@ THREE.Uint32Attribute=function(a,b){THREE.warn("THREE.Uint32Attribute has been r
 THREE.Float64Attribute=function(a,b){THREE.warn("THREE.Float64Attribute has been removed. Use THREE.BufferAttribute( array, itemSize ) instead.");return new THREE.BufferAttribute(a,b)};THREE.DynamicBufferAttribute=function(a,b){THREE.BufferAttribute.call(this,a,b);this.updateRange={offset:0,count:-1}};THREE.DynamicBufferAttribute.prototype=Object.create(THREE.BufferAttribute.prototype);THREE.DynamicBufferAttribute.prototype.constructor=THREE.DynamicBufferAttribute;
 THREE.DynamicBufferAttribute.prototype.clone=function(){return new THREE.DynamicBufferAttribute(new this.array.constructor(this.array),this.itemSize)};THREE.BufferGeometry=function(){Object.defineProperty(this,"id",{value:THREE.GeometryIdCount++});this.uuid=THREE.Math.generateUUID();this.name="";this.type="BufferGeometry";this.attributes={};this.attributesKeys=[];this.offsets=this.drawcalls=[];this.boundingSphere=this.boundingBox=null};
 THREE.BufferGeometry.prototype={constructor:THREE.BufferGeometry,addAttribute:function(a,b,c){!1===b instanceof THREE.BufferAttribute?(THREE.warn("THREE.BufferGeometry: .addAttribute() now expects ( name, attribute )."),this.attributes[a]={array:b,itemSize:c}):(this.attributes[a]=b,this.attributesKeys=Object.keys(this.attributes))},getAttribute:function(a){return this.attributes[a]},addDrawCall:function(a,b,c){this.drawcalls.push({start:a,count:b,index:void 0!==c?c:0})},applyMatrix:function(a){var b=
-this.attributes.position;void 0!==b&&(a.applyToVector3Array(b.array),b.needsUpdate=!0);b=this.attributes.normal;void 0!==b&&((new THREE.Matrix3).getNormalMatrix(a).applyToVector3Array(b.array),b.needsUpdate=!0);this.boundingBox instanceof THREE.Box3&&this.computeBoundingBox();this.boundingSphere instanceof THREE.Sphere&&this.computeBoundingSphere()},center:function(){},fromGeometry:function(a,b){b=b||{vertexColors:THREE.NoColors};var c=a.vertices,d=a.faces,e=a.faceVertexUvs,f=b.vertexColors,g=0<e[0].length,
-h=3==d[0].vertexNormals.length,k=new Float32Array(9*d.length);this.addAttribute("position",new THREE.BufferAttribute(k,3));var l=new Float32Array(9*d.length);this.addAttribute("normal",new THREE.BufferAttribute(l,3));if(f!==THREE.NoColors){var p=new Float32Array(9*d.length);this.addAttribute("color",new THREE.BufferAttribute(p,3))}if(!0===g){var q=new Float32Array(6*d.length);this.addAttribute("uv",new THREE.BufferAttribute(q,2))}for(var n=0,t=0,s=0;n<d.length;n++,t+=6,s+=9){var r=d[n],u=c[r.a],v=
-c[r.b],x=c[r.c];k[s]=u.x;k[s+1]=u.y;k[s+2]=u.z;k[s+3]=v.x;k[s+4]=v.y;k[s+5]=v.z;k[s+6]=x.x;k[s+7]=x.y;k[s+8]=x.z;!0===h?(u=r.vertexNormals[0],v=r.vertexNormals[1],x=r.vertexNormals[2],l[s]=u.x,l[s+1]=u.y,l[s+2]=u.z,l[s+3]=v.x,l[s+4]=v.y,l[s+5]=v.z,l[s+6]=x.x,l[s+7]=x.y,l[s+8]=x.z):(u=r.normal,l[s]=u.x,l[s+1]=u.y,l[s+2]=u.z,l[s+3]=u.x,l[s+4]=u.y,l[s+5]=u.z,l[s+6]=u.x,l[s+7]=u.y,l[s+8]=u.z);f===THREE.FaceColors?(r=r.color,p[s]=r.r,p[s+1]=r.g,p[s+2]=r.b,p[s+3]=r.r,p[s+4]=r.g,p[s+5]=r.b,p[s+6]=r.r,p[s+
-7]=r.g,p[s+8]=r.b):f===THREE.VertexColors&&(u=r.vertexColors[0],v=r.vertexColors[1],r=r.vertexColors[2],p[s]=u.r,p[s+1]=u.g,p[s+2]=u.b,p[s+3]=v.r,p[s+4]=v.g,p[s+5]=v.b,p[s+6]=r.r,p[s+7]=r.g,p[s+8]=r.b);!0===g&&(r=e[0][n][0],u=e[0][n][1],v=e[0][n][2],q[t]=r.x,q[t+1]=r.y,q[t+2]=u.x,q[t+3]=u.y,q[t+4]=v.x,q[t+5]=v.y)}this.computeBoundingSphere();return this},computeBoundingBox:function(){var a=new THREE.Vector3;return function(){null===this.boundingBox&&(this.boundingBox=new THREE.Box3);var b=this.attributes.position.array;
-if(b){var c=this.boundingBox;c.makeEmpty();for(var d=0,e=b.length;d<e;d+=3)a.set(b[d],b[d+1],b[d+2]),c.expandByPoint(a)}if(void 0===b||0===b.length)this.boundingBox.min.set(0,0,0),this.boundingBox.max.set(0,0,0);(isNaN(this.boundingBox.min.x)||isNaN(this.boundingBox.min.y)||isNaN(this.boundingBox.min.z))&&THREE.error('THREE.BufferGeometry.computeBoundingBox: Computed min/max have NaN values. The "position" attribute is likely to have NaN values.')}}(),computeBoundingSphere:function(){var a=new THREE.Box3,
-b=new THREE.Vector3;return function(){null===this.boundingSphere&&(this.boundingSphere=new THREE.Sphere);var c=this.attributes.position.array;if(c){a.makeEmpty();for(var d=this.boundingSphere.center,e=0,f=c.length;e<f;e+=3)b.set(c[e],c[e+1],c[e+2]),a.expandByPoint(b);a.center(d);for(var g=0,e=0,f=c.length;e<f;e+=3)b.set(c[e],c[e+1],c[e+2]),g=Math.max(g,d.distanceToSquared(b));this.boundingSphere.radius=Math.sqrt(g);isNaN(this.boundingSphere.radius)&&THREE.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.')}}}(),
-computeFaceNormals:function(){},computeVertexNormals:function(){var a=this.attributes;if(a.position){var b=a.position.array;if(void 0===a.normal)this.addAttribute("normal",new THREE.BufferAttribute(new Float32Array(b.length),3));else for(var c=a.normal.array,d=0,e=c.length;d<e;d++)c[d]=0;var c=a.normal.array,f,g,h,k=new THREE.Vector3,l=new THREE.Vector3,p=new THREE.Vector3,q=new THREE.Vector3,n=new THREE.Vector3;if(a.index)for(var t=a.index.array,s=0<this.offsets.length?this.offsets:[{start:0,count:t.length,
-index:0}],r=0,u=s.length;r<u;++r){e=s[r].start;f=s[r].count;for(var v=s[r].index,d=e,e=e+f;d<e;d+=3)f=3*(v+t[d]),g=3*(v+t[d+1]),h=3*(v+t[d+2]),k.fromArray(b,f),l.fromArray(b,g),p.fromArray(b,h),q.subVectors(p,l),n.subVectors(k,l),q.cross(n),c[f]+=q.x,c[f+1]+=q.y,c[f+2]+=q.z,c[g]+=q.x,c[g+1]+=q.y,c[g+2]+=q.z,c[h]+=q.x,c[h+1]+=q.y,c[h+2]+=q.z}else for(d=0,e=b.length;d<e;d+=9)k.fromArray(b,d),l.fromArray(b,d+3),p.fromArray(b,d+6),q.subVectors(p,l),n.subVectors(k,l),q.cross(n),c[d]=q.x,c[d+1]=q.y,c[d+
-2]=q.z,c[d+3]=q.x,c[d+4]=q.y,c[d+5]=q.z,c[d+6]=q.x,c[d+7]=q.y,c[d+8]=q.z;this.normalizeNormals();a.normal.needsUpdate=!0}},computeTangents:function(){function a(a,b,c){q.fromArray(d,3*a);n.fromArray(d,3*b);t.fromArray(d,3*c);s.fromArray(f,2*a);r.fromArray(f,2*b);u.fromArray(f,2*c);v=n.x-q.x;x=t.x-q.x;D=n.y-q.y;w=t.y-q.y;y=n.z-q.z;A=t.z-q.z;E=r.x-s.x;G=u.x-s.x;F=r.y-s.y;z=u.y-s.y;I=1/(E*z-G*F);U.set((z*v-F*x)*I,(z*D-F*w)*I,(z*y-F*A)*I);M.set((E*x-G*v)*I,(E*w-G*D)*I,(E*A-G*y)*I);k[a].add(U);k[b].add(U);
-k[c].add(U);l[a].add(M);l[b].add(M);l[c].add(M)}function b(a){ha.fromArray(e,3*a);O.copy(ha);ba=k[a];oa.copy(ba);oa.sub(ha.multiplyScalar(ha.dot(ba))).normalize();ja.crossVectors(O,ba);qa=ja.dot(l[a]);ca=0>qa?-1:1;h[4*a]=oa.x;h[4*a+1]=oa.y;h[4*a+2]=oa.z;h[4*a+3]=ca}if(void 0===this.attributes.index||void 0===this.attributes.position||void 0===this.attributes.normal||void 0===this.attributes.uv)THREE.warn("THREE.BufferGeometry: Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");
-else{var c=this.attributes.index.array,d=this.attributes.position.array,e=this.attributes.normal.array,f=this.attributes.uv.array,g=d.length/3;void 0===this.attributes.tangent&&this.addAttribute("tangent",new THREE.BufferAttribute(new Float32Array(4*g),4));for(var h=this.attributes.tangent.array,k=[],l=[],p=0;p<g;p++)k[p]=new THREE.Vector3,l[p]=new THREE.Vector3;var q=new THREE.Vector3,n=new THREE.Vector3,t=new THREE.Vector3,s=new THREE.Vector2,r=new THREE.Vector2,u=new THREE.Vector2,v,x,D,w,y,A,
-E,G,F,z,I,U=new THREE.Vector3,M=new THREE.Vector3,H,L,P,N,R;0===this.drawcalls.length&&this.addDrawCall(0,c.length,0);var V=this.drawcalls,p=0;for(L=V.length;p<L;++p){H=V[p].start;P=V[p].count;var J=V[p].index,g=H;for(H+=P;g<H;g+=3)P=J+c[g],N=J+c[g+1],R=J+c[g+2],a(P,N,R)}var oa=new THREE.Vector3,ja=new THREE.Vector3,ha=new THREE.Vector3,O=new THREE.Vector3,ca,ba,qa,p=0;for(L=V.length;p<L;++p)for(H=V[p].start,P=V[p].count,J=V[p].index,g=H,H+=P;g<H;g+=3)P=J+c[g],N=J+c[g+1],R=J+c[g+2],b(P),b(N),b(R)}},
-computeOffsets:function(a){var b=a;void 0===a&&(b=65535);Date.now();a=this.attributes.index.array;for(var c=this.attributes.position.array,d=a.length/3,e=new Uint16Array(a.length),f=0,g=0,h=[{start:0,count:0,index:0}],k=h[0],l=0,p=0,q=new Int32Array(6),n=new Int32Array(c.length),t=new Int32Array(c.length),s=0;s<c.length;s++)n[s]=-1,t[s]=-1;for(c=0;c<d;c++){for(var r=p=0;3>r;r++)s=a[3*c+r],-1==n[s]?(q[2*r]=s,q[2*r+1]=-1,p++):n[s]<k.index?(q[2*r]=s,q[2*r+1]=-1,l++):(q[2*r]=s,q[2*r+1]=n[s]);if(g+p>k.index+
-b)for(k={start:f,count:0,index:g},h.push(k),p=0;6>p;p+=2)r=q[p+1],-1<r&&r<k.index&&(q[p+1]=-1);for(p=0;6>p;p+=2)s=q[p],r=q[p+1],-1===r&&(r=g++),n[s]=r,t[r]=s,e[f++]=r-k.index,k.count++}this.reorderBuffers(e,t,g);return this.offsets=h},merge:function(a,b){if(!1===a instanceof THREE.BufferGeometry)THREE.error("THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.",a);else{void 0===b&&(b=0);var c=this.attributes,d;for(d in c)if(void 0!==a.attributes[d])for(var e=c[d].array,
-f=a.attributes[d],g=f.array,h=0,f=f.itemSize*b;h<g.length;h++,f++)e[f]=g[h];return this}},normalizeNormals:function(){for(var a=this.attributes.normal.array,b,c,d,e=0,f=a.length;e<f;e+=3)b=a[e],c=a[e+1],d=a[e+2],b=1/Math.sqrt(b*b+c*c+d*d),a[e]*=b,a[e+1]*=b,a[e+2]*=b},reorderBuffers:function(a,b,c){var d={},e;for(e in this.attributes)"index"!=e&&(d[e]=new this.attributes[e].array.constructor(this.attributes[e].itemSize*c));for(var f=0;f<c;f++){var g=b[f];for(e in this.attributes)if("index"!=e)for(var h=
-this.attributes[e].array,k=this.attributes[e].itemSize,l=d[e],p=0;p<k;p++)l[f*k+p]=h[g*k+p]}this.attributes.index.array=a;for(e in this.attributes)"index"!=e&&(this.attributes[e].array=d[e],this.attributes[e].numItems=this.attributes[e].itemSize*c)},toJSON:function(){var a={metadata:{version:4,type:"BufferGeometry",generator:"BufferGeometryExporter"},uuid:this.uuid,type:this.type,data:{attributes:{}}},b=this.attributes,c=this.offsets,d=this.boundingSphere,e;for(e in b){for(var f=b[e],g=[],h=f.array,
-k=0,l=h.length;k<l;k++)g[k]=h[k];a.data.attributes[e]={itemSize:f.itemSize,type:f.array.constructor.name,array:g}}0<c.length&&(a.data.offsets=JSON.parse(JSON.stringify(c)));null!==d&&(a.data.boundingSphere={center:d.center.toArray(),radius:d.radius});return a},clone:function(){var a=new THREE.BufferGeometry,b;for(b in this.attributes)a.addAttribute(b,this.attributes[b].clone());b=0;for(var c=this.offsets.length;b<c;b++){var d=this.offsets[b];a.offsets.push({start:d.start,index:d.index,count:d.count})}return a},
-dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.BufferGeometry.prototype);
+this.attributes.position;void 0!==b&&(a.applyToVector3Array(b.array),b.needsUpdate=!0);b=this.attributes.normal;void 0!==b&&((new THREE.Matrix3).getNormalMatrix(a).applyToVector3Array(b.array),b.needsUpdate=!0);null!==this.boundingBox&&this.computeBoundingBox();null!==this.boundingSphere&&this.computeBoundingSphere()},center:function(){this.computeBoundingBox();var a=this.boundingBox.center().negate();this.applyMatrix((new THREE.Matrix4).setPosition(a));return a},fromGeometry:function(a,b){b=b||{vertexColors:THREE.NoColors};
+var c=a.vertices,d=a.faces,e=a.faceVertexUvs,f=b.vertexColors,g=0<e[0].length,h=3==d[0].vertexNormals.length,k=new Float32Array(9*d.length);this.addAttribute("position",new THREE.BufferAttribute(k,3));var l=new Float32Array(9*d.length);this.addAttribute("normal",new THREE.BufferAttribute(l,3));if(f!==THREE.NoColors){var p=new Float32Array(9*d.length);this.addAttribute("color",new THREE.BufferAttribute(p,3))}if(!0===g){var q=new Float32Array(6*d.length);this.addAttribute("uv",new THREE.BufferAttribute(q,
+2))}for(var n=0,t=0,s=0;n<d.length;n++,t+=6,s+=9){var r=d[n],u=c[r.a],v=c[r.b],x=c[r.c];k[s]=u.x;k[s+1]=u.y;k[s+2]=u.z;k[s+3]=v.x;k[s+4]=v.y;k[s+5]=v.z;k[s+6]=x.x;k[s+7]=x.y;k[s+8]=x.z;!0===h?(u=r.vertexNormals[0],v=r.vertexNormals[1],x=r.vertexNormals[2],l[s]=u.x,l[s+1]=u.y,l[s+2]=u.z,l[s+3]=v.x,l[s+4]=v.y,l[s+5]=v.z,l[s+6]=x.x,l[s+7]=x.y,l[s+8]=x.z):(u=r.normal,l[s]=u.x,l[s+1]=u.y,l[s+2]=u.z,l[s+3]=u.x,l[s+4]=u.y,l[s+5]=u.z,l[s+6]=u.x,l[s+7]=u.y,l[s+8]=u.z);f===THREE.FaceColors?(r=r.color,p[s]=
+r.r,p[s+1]=r.g,p[s+2]=r.b,p[s+3]=r.r,p[s+4]=r.g,p[s+5]=r.b,p[s+6]=r.r,p[s+7]=r.g,p[s+8]=r.b):f===THREE.VertexColors&&(u=r.vertexColors[0],v=r.vertexColors[1],r=r.vertexColors[2],p[s]=u.r,p[s+1]=u.g,p[s+2]=u.b,p[s+3]=v.r,p[s+4]=v.g,p[s+5]=v.b,p[s+6]=r.r,p[s+7]=r.g,p[s+8]=r.b);!0===g&&(r=e[0][n][0],u=e[0][n][1],v=e[0][n][2],q[t]=r.x,q[t+1]=r.y,q[t+2]=u.x,q[t+3]=u.y,q[t+4]=v.x,q[t+5]=v.y)}this.computeBoundingSphere();return this},computeBoundingBox:function(){var a=new THREE.Vector3;return function(){null===
+this.boundingBox&&(this.boundingBox=new THREE.Box3);var b=this.attributes.position.array;if(b){var c=this.boundingBox;c.makeEmpty();for(var d=0,e=b.length;d<e;d+=3)a.set(b[d],b[d+1],b[d+2]),c.expandByPoint(a)}if(void 0===b||0===b.length)this.boundingBox.min.set(0,0,0),this.boundingBox.max.set(0,0,0);(isNaN(this.boundingBox.min.x)||isNaN(this.boundingBox.min.y)||isNaN(this.boundingBox.min.z))&&THREE.error('THREE.BufferGeometry.computeBoundingBox: Computed min/max have NaN values. The "position" attribute is likely to have NaN values.')}}(),
+computeBoundingSphere:function(){var a=new THREE.Box3,b=new THREE.Vector3;return function(){null===this.boundingSphere&&(this.boundingSphere=new THREE.Sphere);var c=this.attributes.position.array;if(c){a.makeEmpty();for(var d=this.boundingSphere.center,e=0,f=c.length;e<f;e+=3)b.set(c[e],c[e+1],c[e+2]),a.expandByPoint(b);a.center(d);for(var g=0,e=0,f=c.length;e<f;e+=3)b.set(c[e],c[e+1],c[e+2]),g=Math.max(g,d.distanceToSquared(b));this.boundingSphere.radius=Math.sqrt(g);isNaN(this.boundingSphere.radius)&&
+THREE.error('THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.')}}}(),computeFaceNormals:function(){},computeVertexNormals:function(){var a=this.attributes;if(a.position){var b=a.position.array;if(void 0===a.normal)this.addAttribute("normal",new THREE.BufferAttribute(new Float32Array(b.length),3));else for(var c=a.normal.array,d=0,e=c.length;d<e;d++)c[d]=0;var c=a.normal.array,f,g,h,k=new THREE.Vector3,l=new THREE.Vector3,
+p=new THREE.Vector3,q=new THREE.Vector3,n=new THREE.Vector3;if(a.index)for(var t=a.index.array,s=0<this.offsets.length?this.offsets:[{start:0,count:t.length,index:0}],r=0,u=s.length;r<u;++r){e=s[r].start;f=s[r].count;for(var v=s[r].index,d=e,e=e+f;d<e;d+=3)f=3*(v+t[d]),g=3*(v+t[d+1]),h=3*(v+t[d+2]),k.fromArray(b,f),l.fromArray(b,g),p.fromArray(b,h),q.subVectors(p,l),n.subVectors(k,l),q.cross(n),c[f]+=q.x,c[f+1]+=q.y,c[f+2]+=q.z,c[g]+=q.x,c[g+1]+=q.y,c[g+2]+=q.z,c[h]+=q.x,c[h+1]+=q.y,c[h+2]+=q.z}else for(d=
+0,e=b.length;d<e;d+=9)k.fromArray(b,d),l.fromArray(b,d+3),p.fromArray(b,d+6),q.subVectors(p,l),n.subVectors(k,l),q.cross(n),c[d]=q.x,c[d+1]=q.y,c[d+2]=q.z,c[d+3]=q.x,c[d+4]=q.y,c[d+5]=q.z,c[d+6]=q.x,c[d+7]=q.y,c[d+8]=q.z;this.normalizeNormals();a.normal.needsUpdate=!0}},computeTangents:function(){function a(a,b,c){q.fromArray(d,3*a);n.fromArray(d,3*b);t.fromArray(d,3*c);s.fromArray(f,2*a);r.fromArray(f,2*b);u.fromArray(f,2*c);v=n.x-q.x;x=t.x-q.x;D=n.y-q.y;w=t.y-q.y;y=n.z-q.z;A=t.z-q.z;E=r.x-s.x;G=
+u.x-s.x;F=r.y-s.y;z=u.y-s.y;I=1/(E*z-G*F);U.set((z*v-F*x)*I,(z*D-F*w)*I,(z*y-F*A)*I);M.set((E*x-G*v)*I,(E*w-G*D)*I,(E*A-G*y)*I);k[a].add(U);k[b].add(U);k[c].add(U);l[a].add(M);l[b].add(M);l[c].add(M)}function b(a){ha.fromArray(e,3*a);O.copy(ha);ba=k[a];oa.copy(ba);oa.sub(ha.multiplyScalar(ha.dot(ba))).normalize();ja.crossVectors(O,ba);qa=ja.dot(l[a]);ca=0>qa?-1:1;h[4*a]=oa.x;h[4*a+1]=oa.y;h[4*a+2]=oa.z;h[4*a+3]=ca}if(void 0===this.attributes.index||void 0===this.attributes.position||void 0===this.attributes.normal||
+void 0===this.attributes.uv)THREE.warn("THREE.BufferGeometry: Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");else{var c=this.attributes.index.array,d=this.attributes.position.array,e=this.attributes.normal.array,f=this.attributes.uv.array,g=d.length/3;void 0===this.attributes.tangent&&this.addAttribute("tangent",new THREE.BufferAttribute(new Float32Array(4*g),4));for(var h=this.attributes.tangent.array,k=[],l=[],p=0;p<g;p++)k[p]=new THREE.Vector3,
+l[p]=new THREE.Vector3;var q=new THREE.Vector3,n=new THREE.Vector3,t=new THREE.Vector3,s=new THREE.Vector2,r=new THREE.Vector2,u=new THREE.Vector2,v,x,D,w,y,A,E,G,F,z,I,U=new THREE.Vector3,M=new THREE.Vector3,H,L,P,N,R;0===this.drawcalls.length&&this.addDrawCall(0,c.length,0);var V=this.drawcalls,p=0;for(L=V.length;p<L;++p){H=V[p].start;P=V[p].count;var J=V[p].index,g=H;for(H+=P;g<H;g+=3)P=J+c[g],N=J+c[g+1],R=J+c[g+2],a(P,N,R)}var oa=new THREE.Vector3,ja=new THREE.Vector3,ha=new THREE.Vector3,O=new THREE.Vector3,
+ca,ba,qa,p=0;for(L=V.length;p<L;++p)for(H=V[p].start,P=V[p].count,J=V[p].index,g=H,H+=P;g<H;g+=3)P=J+c[g],N=J+c[g+1],R=J+c[g+2],b(P),b(N),b(R)}},computeOffsets:function(a){var b=a;void 0===a&&(b=65535);Date.now();a=this.attributes.index.array;for(var c=this.attributes.position.array,d=a.length/3,e=new Uint16Array(a.length),f=0,g=0,h=[{start:0,count:0,index:0}],k=h[0],l=0,p=0,q=new Int32Array(6),n=new Int32Array(c.length),t=new Int32Array(c.length),s=0;s<c.length;s++)n[s]=-1,t[s]=-1;for(c=0;c<d;c++){for(var r=
+p=0;3>r;r++)s=a[3*c+r],-1==n[s]?(q[2*r]=s,q[2*r+1]=-1,p++):n[s]<k.index?(q[2*r]=s,q[2*r+1]=-1,l++):(q[2*r]=s,q[2*r+1]=n[s]);if(g+p>k.index+b)for(k={start:f,count:0,index:g},h.push(k),p=0;6>p;p+=2)r=q[p+1],-1<r&&r<k.index&&(q[p+1]=-1);for(p=0;6>p;p+=2)s=q[p],r=q[p+1],-1===r&&(r=g++),n[s]=r,t[r]=s,e[f++]=r-k.index,k.count++}this.reorderBuffers(e,t,g);return this.offsets=h},merge:function(a,b){if(!1===a instanceof THREE.BufferGeometry)THREE.error("THREE.BufferGeometry.merge(): geometry not an instance of THREE.BufferGeometry.",
+a);else{void 0===b&&(b=0);var c=this.attributes,d;for(d in c)if(void 0!==a.attributes[d])for(var e=c[d].array,f=a.attributes[d],g=f.array,h=0,f=f.itemSize*b;h<g.length;h++,f++)e[f]=g[h];return this}},normalizeNormals:function(){for(var a=this.attributes.normal.array,b,c,d,e=0,f=a.length;e<f;e+=3)b=a[e],c=a[e+1],d=a[e+2],b=1/Math.sqrt(b*b+c*c+d*d),a[e]*=b,a[e+1]*=b,a[e+2]*=b},reorderBuffers:function(a,b,c){var d={},e;for(e in this.attributes)"index"!=e&&(d[e]=new this.attributes[e].array.constructor(this.attributes[e].itemSize*
+c));for(var f=0;f<c;f++){var g=b[f];for(e in this.attributes)if("index"!=e)for(var h=this.attributes[e].array,k=this.attributes[e].itemSize,l=d[e],p=0;p<k;p++)l[f*k+p]=h[g*k+p]}this.attributes.index.array=a;for(e in this.attributes)"index"!=e&&(this.attributes[e].array=d[e],this.attributes[e].numItems=this.attributes[e].itemSize*c)},toJSON:function(){var a={metadata:{version:4,type:"BufferGeometry",generator:"BufferGeometryExporter"},uuid:this.uuid,type:this.type,data:{attributes:{}}},b=this.attributes,
+c=this.offsets,d=this.boundingSphere,e;for(e in b){var f=b[e],g=Array.prototype.slice.call(f.array);a.data.attributes[e]={itemSize:f.itemSize,type:f.array.constructor.name,array:g}}0<c.length&&(a.data.offsets=JSON.parse(JSON.stringify(c)));null!==d&&(a.data.boundingSphere={center:d.center.toArray(),radius:d.radius});return a},clone:function(){var a=new THREE.BufferGeometry,b;for(b in this.attributes)a.addAttribute(b,this.attributes[b].clone());b=0;for(var c=this.offsets.length;b<c;b++){var d=this.offsets[b];
+a.offsets.push({start:d.start,index:d.index,count:d.count})}return a},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.BufferGeometry.prototype);
 THREE.Geometry=function(){Object.defineProperty(this,"id",{value:THREE.GeometryIdCount++});this.uuid=THREE.Math.generateUUID();this.name="";this.type="Geometry";this.vertices=[];this.colors=[];this.faces=[];this.faceVertexUvs=[[]];this.morphTargets=[];this.morphColors=[];this.morphNormals=[];this.skinWeights=[];this.skinIndices=[];this.lineDistances=[];this.boundingSphere=this.boundingBox=null;this.hasTangents=!1;this.dynamic=!0;this.groupsNeedUpdate=this.lineDistancesNeedUpdate=this.colorsNeedUpdate=
 this.tangentsNeedUpdate=this.normalsNeedUpdate=this.uvsNeedUpdate=this.elementsNeedUpdate=this.verticesNeedUpdate=!1};
-THREE.Geometry.prototype={constructor:THREE.Geometry,applyMatrix:function(a){for(var b=(new THREE.Matrix3).getNormalMatrix(a),c=0,d=this.vertices.length;c<d;c++)this.vertices[c].applyMatrix4(a);c=0;for(d=this.faces.length;c<d;c++){a=this.faces[c];a.normal.applyMatrix3(b).normalize();for(var e=0,f=a.vertexNormals.length;e<f;e++)a.vertexNormals[e].applyMatrix3(b).normalize()}this.boundingBox instanceof THREE.Box3&&this.computeBoundingBox();this.boundingSphere instanceof THREE.Sphere&&this.computeBoundingSphere()},
-fromBufferGeometry:function(a){for(var b=this,c=a.attributes,d=c.position.array,e=void 0!==c.index?c.index.array:void 0,f=void 0!==c.normal?c.normal.array:void 0,g=void 0!==c.color?c.color.array:void 0,h=void 0!==c.uv?c.uv.array:void 0,k=[],l=[],p=c=0;c<d.length;c+=3,p+=2)b.vertices.push(new THREE.Vector3(d[c],d[c+1],d[c+2])),void 0!==f&&k.push(new THREE.Vector3(f[c],f[c+1],f[c+2])),void 0!==g&&b.colors.push(new THREE.Color(g[c],g[c+1],g[c+2])),void 0!==h&&l.push(new THREE.Vector2(h[p],h[p+1]));p=
-function(a,c,d){var e=void 0!==f?[k[a].clone(),k[c].clone(),k[d].clone()]:[],p=void 0!==g?[b.colors[a].clone(),b.colors[c].clone(),b.colors[d].clone()]:[];b.faces.push(new THREE.Face3(a,c,d,e,p));void 0!==h&&b.faceVertexUvs[0].push([l[a].clone(),l[c].clone(),l[d].clone()])};if(void 0!==e)for(c=0;c<e.length;c+=3)p(e[c],e[c+1],e[c+2]);else for(c=0;c<d.length/3;c+=3)p(c,c+1,c+2);this.computeFaceNormals();null!==a.boundingBox&&(this.boundingBox=a.boundingBox.clone());null!==a.boundingSphere&&(this.boundingSphere=
-a.boundingSphere.clone());return this},center:function(){this.computeBoundingBox();var a=new THREE.Vector3;a.addVectors(this.boundingBox.min,this.boundingBox.max);a.multiplyScalar(-.5);this.applyMatrix((new THREE.Matrix4).makeTranslation(a.x,a.y,a.z));this.computeBoundingBox();return a},computeFaceNormals:function(){for(var a=new THREE.Vector3,b=new THREE.Vector3,c=0,d=this.faces.length;c<d;c++){var e=this.faces[c],f=this.vertices[e.a],g=this.vertices[e.b];a.subVectors(this.vertices[e.c],g);b.subVectors(f,
-g);a.cross(b);a.normalize();e.normal.copy(a)}},computeVertexNormals:function(a){var b,c,d;d=Array(this.vertices.length);b=0;for(c=this.vertices.length;b<c;b++)d[b]=new THREE.Vector3;if(a){var e,f,g,h=new THREE.Vector3,k=new THREE.Vector3;new THREE.Vector3;new THREE.Vector3;new THREE.Vector3;a=0;for(b=this.faces.length;a<b;a++)c=this.faces[a],e=this.vertices[c.a],f=this.vertices[c.b],g=this.vertices[c.c],h.subVectors(g,f),k.subVectors(e,f),h.cross(k),d[c.a].add(h),d[c.b].add(h),d[c.c].add(h)}else for(a=
-0,b=this.faces.length;a<b;a++)c=this.faces[a],d[c.a].add(c.normal),d[c.b].add(c.normal),d[c.c].add(c.normal);b=0;for(c=this.vertices.length;b<c;b++)d[b].normalize();a=0;for(b=this.faces.length;a<b;a++)c=this.faces[a],c.vertexNormals[0]=d[c.a].clone(),c.vertexNormals[1]=d[c.b].clone(),c.vertexNormals[2]=d[c.c].clone()},computeMorphNormals:function(){var a,b,c,d,e;c=0;for(d=this.faces.length;c<d;c++)for(e=this.faces[c],e.__originalFaceNormal?e.__originalFaceNormal.copy(e.normal):e.__originalFaceNormal=
-e.normal.clone(),e.__originalVertexNormals||(e.__originalVertexNormals=[]),a=0,b=e.vertexNormals.length;a<b;a++)e.__originalVertexNormals[a]?e.__originalVertexNormals[a].copy(e.vertexNormals[a]):e.__originalVertexNormals[a]=e.vertexNormals[a].clone();var f=new THREE.Geometry;f.faces=this.faces;a=0;for(b=this.morphTargets.length;a<b;a++){if(!this.morphNormals[a]){this.morphNormals[a]={};this.morphNormals[a].faceNormals=[];this.morphNormals[a].vertexNormals=[];e=this.morphNormals[a].faceNormals;var g=
-this.morphNormals[a].vertexNormals,h,k;c=0;for(d=this.faces.length;c<d;c++)h=new THREE.Vector3,k={a:new THREE.Vector3,b:new THREE.Vector3,c:new THREE.Vector3},e.push(h),g.push(k)}g=this.morphNormals[a];f.vertices=this.morphTargets[a].vertices;f.computeFaceNormals();f.computeVertexNormals();c=0;for(d=this.faces.length;c<d;c++)e=this.faces[c],h=g.faceNormals[c],k=g.vertexNormals[c],h.copy(e.normal),k.a.copy(e.vertexNormals[0]),k.b.copy(e.vertexNormals[1]),k.c.copy(e.vertexNormals[2])}c=0;for(d=this.faces.length;c<
-d;c++)e=this.faces[c],e.normal=e.__originalFaceNormal,e.vertexNormals=e.__originalVertexNormals},computeTangents:function(){var a,b,c,d,e,f,g,h,k,l,p,q,n,t,s,r,u,v=[],x=[];c=new THREE.Vector3;var D=new THREE.Vector3,w=new THREE.Vector3,y=new THREE.Vector3,A=new THREE.Vector3;a=0;for(b=this.vertices.length;a<b;a++)v[a]=new THREE.Vector3,x[a]=new THREE.Vector3;a=0;for(b=this.faces.length;a<b;a++)e=this.faces[a],f=this.faceVertexUvs[0][a],d=e.a,u=e.b,e=e.c,g=this.vertices[d],h=this.vertices[u],k=this.vertices[e],
-l=f[0],p=f[1],q=f[2],f=h.x-g.x,n=k.x-g.x,t=h.y-g.y,s=k.y-g.y,h=h.z-g.z,g=k.z-g.z,k=p.x-l.x,r=q.x-l.x,p=p.y-l.y,l=q.y-l.y,q=1/(k*l-r*p),c.set((l*f-p*n)*q,(l*t-p*s)*q,(l*h-p*g)*q),D.set((k*n-r*f)*q,(k*s-r*t)*q,(k*g-r*h)*q),v[d].add(c),v[u].add(c),v[e].add(c),x[d].add(D),x[u].add(D),x[e].add(D);D=["a","b","c","d"];a=0;for(b=this.faces.length;a<b;a++)for(e=this.faces[a],c=0;c<Math.min(e.vertexNormals.length,3);c++)A.copy(e.vertexNormals[c]),d=e[D[c]],u=v[d],w.copy(u),w.sub(A.multiplyScalar(A.dot(u))).normalize(),
-y.crossVectors(e.vertexNormals[c],u),d=y.dot(x[d]),d=0>d?-1:1,e.vertexTangents[c]=new THREE.Vector4(w.x,w.y,w.z,d);this.hasTangents=!0},computeLineDistances:function(){for(var a=0,b=this.vertices,c=0,d=b.length;c<d;c++)0<c&&(a+=b[c].distanceTo(b[c-1])),this.lineDistances[c]=a},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new THREE.Box3);this.boundingBox.setFromPoints(this.vertices)},computeBoundingSphere:function(){null===this.boundingSphere&&(this.boundingSphere=new THREE.Sphere);
-this.boundingSphere.setFromPoints(this.vertices)},merge:function(a,b,c){if(!1===a instanceof THREE.Geometry)THREE.error("THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.",a);else{var d,e=this.vertices.length,f=this.vertices,g=a.vertices,h=this.faces,k=a.faces,l=this.faceVertexUvs[0];a=a.faceVertexUvs[0];void 0===c&&(c=0);void 0!==b&&(d=(new THREE.Matrix3).getNormalMatrix(b));for(var p=0,q=g.length;p<q;p++){var n=g[p].clone();void 0!==b&&n.applyMatrix4(b);f.push(n)}p=0;for(q=k.length;p<
-q;p++){var g=k[p],t,s=g.vertexNormals,r=g.vertexColors,n=new THREE.Face3(g.a+e,g.b+e,g.c+e);n.normal.copy(g.normal);void 0!==d&&n.normal.applyMatrix3(d).normalize();b=0;for(f=s.length;b<f;b++)t=s[b].clone(),void 0!==d&&t.applyMatrix3(d).normalize(),n.vertexNormals.push(t);n.color.copy(g.color);b=0;for(f=r.length;b<f;b++)t=r[b],n.vertexColors.push(t.clone());n.materialIndex=g.materialIndex+c;h.push(n)}p=0;for(q=a.length;p<q;p++)if(c=a[p],d=[],void 0!==c){b=0;for(f=c.length;b<f;b++)d.push(c[b].clone());
-l.push(d)}}},mergeMesh:function(a){!1===a instanceof THREE.Mesh?THREE.error("THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.",a):(a.matrixAutoUpdate&&a.updateMatrix(),this.merge(a.geometry,a.matrix))},mergeVertices:function(){var a={},b=[],c=[],d,e=Math.pow(10,4),f,g;f=0;for(g=this.vertices.length;f<g;f++)d=this.vertices[f],d=Math.round(d.x*e)+"_"+Math.round(d.y*e)+"_"+Math.round(d.z*e),void 0===a[d]?(a[d]=f,b.push(this.vertices[f]),c[f]=b.length-1):c[f]=c[a[d]];a=[];f=0;for(g=this.faces.length;f<
-g;f++)for(e=this.faces[f],e.a=c[e.a],e.b=c[e.b],e.c=c[e.c],e=[e.a,e.b,e.c],d=0;3>d;d++)if(e[d]==e[(d+1)%3]){a.push(f);break}for(f=a.length-1;0<=f;f--)for(e=a[f],this.faces.splice(e,1),c=0,g=this.faceVertexUvs.length;c<g;c++)this.faceVertexUvs[c].splice(e,1);f=this.vertices.length-b.length;this.vertices=b;return f},toJSON:function(){function a(a,b,c){return c?a|1<<b:a&~(1<<b)}function b(a){var b=a.x.toString()+a.y.toString()+a.z.toString();if(void 0!==l[b])return l[b];l[b]=k.length/3;k.push(a.x,a.y,
-a.z);return l[b]}function c(a){var b=a.r.toString()+a.g.toString()+a.b.toString();if(void 0!==q[b])return q[b];q[b]=p.length;p.push(a.getHex());return q[b]}function d(a){var b=a.x.toString()+a.y.toString();if(void 0!==t[b])return t[b];t[b]=n.length/2;n.push(a.x,a.y);return t[b]}var e={metadata:{version:4,type:"BufferGeometry",generator:"BufferGeometryExporter"},uuid:this.uuid,type:this.type};""!==this.name&&(e.name=this.name);if(void 0!==this.parameters){var f=this.parameters,g;for(g in f)void 0!==
-f[g]&&(e[g]=f[g]);return e}f=[];for(g=0;g<this.vertices.length;g++){var h=this.vertices[g];f.push(h.x,h.y,h.z)}var h=[],k=[],l={},p=[],q={},n=[],t={};for(g=0;g<this.faces.length;g++){var s=this.faces[g],r=void 0!==this.faceVertexUvs[0][g],u=0<s.normal.length(),v=0<s.vertexNormals.length,x=1!==s.color.r||1!==s.color.g||1!==s.color.b,D=0<s.vertexColors.length,w=0,w=a(w,0,0),w=a(w,1,!1),w=a(w,2,!1),w=a(w,3,r),w=a(w,4,u),w=a(w,5,v),w=a(w,6,x),w=a(w,7,D);h.push(w);h.push(s.a,s.b,s.c);r&&(r=this.faceVertexUvs[0][g],
-h.push(d(r[0]),d(r[1]),d(r[2])));u&&h.push(b(s.normal));v&&(u=s.vertexNormals,h.push(b(u[0]),b(u[1]),b(u[2])));x&&h.push(c(s.color));D&&(s=s.vertexColors,h.push(c(s[0]),c(s[1]),c(s[2])))}e.data={};e.data.vertices=f;e.data.normals=k;0<p.length&&(e.data.colors=p);0<n.length&&(e.data.uvs=[n]);e.data.faces=h;return e},clone:function(){for(var a=new THREE.Geometry,b=this.vertices,c=0,d=b.length;c<d;c++)a.vertices.push(b[c].clone());b=this.faces;c=0;for(d=b.length;c<d;c++)a.faces.push(b[c].clone());c=0;
-for(d=this.faceVertexUvs.length;c<d;c++){b=this.faceVertexUvs[c];void 0===a.faceVertexUvs[c]&&(a.faceVertexUvs[c]=[]);for(var e=0,f=b.length;e<f;e++){for(var g=b[e],h=[],k=0,l=g.length;k<l;k++)h.push(g[k].clone());a.faceVertexUvs[c].push(h)}}return a},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.Geometry.prototype);THREE.GeometryIdCount=0;
-THREE.Camera=function(){THREE.Object3D.call(this);this.type="Camera";this.matrixWorldInverse=new THREE.Matrix4;this.projectionMatrix=new THREE.Matrix4};THREE.Camera.prototype=Object.create(THREE.Object3D.prototype);THREE.Camera.prototype.constructor=THREE.Camera;THREE.Camera.prototype.getWorldDirection=function(){var a=new THREE.Quaternion;return function(b){b=b||new THREE.Vector3;this.getWorldQuaternion(a);return b.set(0,0,-1).applyQuaternion(a)}}();
-THREE.Camera.prototype.lookAt=function(){var a=new THREE.Matrix4;return function(b){a.lookAt(this.position,b,this.up);this.quaternion.setFromRotationMatrix(a)}}();THREE.Camera.prototype.clone=function(a){void 0===a&&(a=new THREE.Camera);THREE.Object3D.prototype.clone.call(this,a);a.matrixWorldInverse.copy(this.matrixWorldInverse);a.projectionMatrix.copy(this.projectionMatrix);return a};
+THREE.Geometry.prototype={constructor:THREE.Geometry,applyMatrix:function(a){for(var b=(new THREE.Matrix3).getNormalMatrix(a),c=0,d=this.vertices.length;c<d;c++)this.vertices[c].applyMatrix4(a);c=0;for(d=this.faces.length;c<d;c++){a=this.faces[c];a.normal.applyMatrix3(b).normalize();for(var e=0,f=a.vertexNormals.length;e<f;e++)a.vertexNormals[e].applyMatrix3(b).normalize()}null!==this.boundingBox&&this.computeBoundingBox();null!==this.boundingSphere&&this.computeBoundingSphere();this.normalsNeedUpdate=
+this.verticesNeedUpdate=!0},fromBufferGeometry:function(a){for(var b=this,c=a.attributes,d=c.position.array,e=void 0!==c.index?c.index.array:void 0,f=void 0!==c.normal?c.normal.array:void 0,g=void 0!==c.color?c.color.array:void 0,h=void 0!==c.uv?c.uv.array:void 0,k=[],l=[],p=c=0;c<d.length;c+=3,p+=2)b.vertices.push(new THREE.Vector3(d[c],d[c+1],d[c+2])),void 0!==f&&k.push(new THREE.Vector3(f[c],f[c+1],f[c+2])),void 0!==g&&b.colors.push(new THREE.Color(g[c],g[c+1],g[c+2])),void 0!==h&&l.push(new THREE.Vector2(h[p],
+h[p+1]));p=function(a,c,d){var e=void 0!==f?[k[a].clone(),k[c].clone(),k[d].clone()]:[],p=void 0!==g?[b.colors[a].clone(),b.colors[c].clone(),b.colors[d].clone()]:[];b.faces.push(new THREE.Face3(a,c,d,e,p));void 0!==h&&b.faceVertexUvs[0].push([l[a].clone(),l[c].clone(),l[d].clone()])};if(void 0!==e)for(c=0;c<e.length;c+=3)p(e[c],e[c+1],e[c+2]);else for(c=0;c<d.length/3;c+=3)p(c,c+1,c+2);this.computeFaceNormals();null!==a.boundingBox&&(this.boundingBox=a.boundingBox.clone());null!==a.boundingSphere&&
+(this.boundingSphere=a.boundingSphere.clone());return this},center:function(){this.computeBoundingBox();var a=this.boundingBox.center().negate();this.applyMatrix((new THREE.Matrix4).setPosition(a));return a},computeFaceNormals:function(){for(var a=new THREE.Vector3,b=new THREE.Vector3,c=0,d=this.faces.length;c<d;c++){var e=this.faces[c],f=this.vertices[e.a],g=this.vertices[e.b];a.subVectors(this.vertices[e.c],g);b.subVectors(f,g);a.cross(b);a.normalize();e.normal.copy(a)}},computeVertexNormals:function(a){var b,
+c,d;d=Array(this.vertices.length);b=0;for(c=this.vertices.length;b<c;b++)d[b]=new THREE.Vector3;if(a){var e,f,g,h=new THREE.Vector3,k=new THREE.Vector3;new THREE.Vector3;new THREE.Vector3;new THREE.Vector3;a=0;for(b=this.faces.length;a<b;a++)c=this.faces[a],e=this.vertices[c.a],f=this.vertices[c.b],g=this.vertices[c.c],h.subVectors(g,f),k.subVectors(e,f),h.cross(k),d[c.a].add(h),d[c.b].add(h),d[c.c].add(h)}else for(a=0,b=this.faces.length;a<b;a++)c=this.faces[a],d[c.a].add(c.normal),d[c.b].add(c.normal),
+d[c.c].add(c.normal);b=0;for(c=this.vertices.length;b<c;b++)d[b].normalize();a=0;for(b=this.faces.length;a<b;a++)c=this.faces[a],c.vertexNormals[0]=d[c.a].clone(),c.vertexNormals[1]=d[c.b].clone(),c.vertexNormals[2]=d[c.c].clone()},computeMorphNormals:function(){var a,b,c,d,e;c=0;for(d=this.faces.length;c<d;c++)for(e=this.faces[c],e.__originalFaceNormal?e.__originalFaceNormal.copy(e.normal):e.__originalFaceNormal=e.normal.clone(),e.__originalVertexNormals||(e.__originalVertexNormals=[]),a=0,b=e.vertexNormals.length;a<
+b;a++)e.__originalVertexNormals[a]?e.__originalVertexNormals[a].copy(e.vertexNormals[a]):e.__originalVertexNormals[a]=e.vertexNormals[a].clone();var f=new THREE.Geometry;f.faces=this.faces;a=0;for(b=this.morphTargets.length;a<b;a++){if(!this.morphNormals[a]){this.morphNormals[a]={};this.morphNormals[a].faceNormals=[];this.morphNormals[a].vertexNormals=[];e=this.morphNormals[a].faceNormals;var g=this.morphNormals[a].vertexNormals,h,k;c=0;for(d=this.faces.length;c<d;c++)h=new THREE.Vector3,k={a:new THREE.Vector3,
+b:new THREE.Vector3,c:new THREE.Vector3},e.push(h),g.push(k)}g=this.morphNormals[a];f.vertices=this.morphTargets[a].vertices;f.computeFaceNormals();f.computeVertexNormals();c=0;for(d=this.faces.length;c<d;c++)e=this.faces[c],h=g.faceNormals[c],k=g.vertexNormals[c],h.copy(e.normal),k.a.copy(e.vertexNormals[0]),k.b.copy(e.vertexNormals[1]),k.c.copy(e.vertexNormals[2])}c=0;for(d=this.faces.length;c<d;c++)e=this.faces[c],e.normal=e.__originalFaceNormal,e.vertexNormals=e.__originalVertexNormals},computeTangents:function(){var a,
+b,c,d,e,f,g,h,k,l,p,q,n,t,s,r,u,v=[],x=[];c=new THREE.Vector3;var D=new THREE.Vector3,w=new THREE.Vector3,y=new THREE.Vector3,A=new THREE.Vector3;a=0;for(b=this.vertices.length;a<b;a++)v[a]=new THREE.Vector3,x[a]=new THREE.Vector3;a=0;for(b=this.faces.length;a<b;a++)e=this.faces[a],f=this.faceVertexUvs[0][a],d=e.a,u=e.b,e=e.c,g=this.vertices[d],h=this.vertices[u],k=this.vertices[e],l=f[0],p=f[1],q=f[2],f=h.x-g.x,n=k.x-g.x,t=h.y-g.y,s=k.y-g.y,h=h.z-g.z,g=k.z-g.z,k=p.x-l.x,r=q.x-l.x,p=p.y-l.y,l=q.y-
+l.y,q=1/(k*l-r*p),c.set((l*f-p*n)*q,(l*t-p*s)*q,(l*h-p*g)*q),D.set((k*n-r*f)*q,(k*s-r*t)*q,(k*g-r*h)*q),v[d].add(c),v[u].add(c),v[e].add(c),x[d].add(D),x[u].add(D),x[e].add(D);D=["a","b","c","d"];a=0;for(b=this.faces.length;a<b;a++)for(e=this.faces[a],c=0;c<Math.min(e.vertexNormals.length,3);c++)A.copy(e.vertexNormals[c]),d=e[D[c]],u=v[d],w.copy(u),w.sub(A.multiplyScalar(A.dot(u))).normalize(),y.crossVectors(e.vertexNormals[c],u),d=y.dot(x[d]),d=0>d?-1:1,e.vertexTangents[c]=new THREE.Vector4(w.x,
+w.y,w.z,d);this.hasTangents=!0},computeLineDistances:function(){for(var a=0,b=this.vertices,c=0,d=b.length;c<d;c++)0<c&&(a+=b[c].distanceTo(b[c-1])),this.lineDistances[c]=a},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new THREE.Box3);this.boundingBox.setFromPoints(this.vertices)},computeBoundingSphere:function(){null===this.boundingSphere&&(this.boundingSphere=new THREE.Sphere);this.boundingSphere.setFromPoints(this.vertices)},merge:function(a,b,c){if(!1===a instanceof
+THREE.Geometry)THREE.error("THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.",a);else{var d,e=this.vertices.length,f=this.vertices,g=a.vertices,h=this.faces,k=a.faces,l=this.faceVertexUvs[0];a=a.faceVertexUvs[0];void 0===c&&(c=0);void 0!==b&&(d=(new THREE.Matrix3).getNormalMatrix(b));for(var p=0,q=g.length;p<q;p++){var n=g[p].clone();void 0!==b&&n.applyMatrix4(b);f.push(n)}p=0;for(q=k.length;p<q;p++){var g=k[p],t,s=g.vertexNormals,r=g.vertexColors,n=new THREE.Face3(g.a+e,g.b+e,
+g.c+e);n.normal.copy(g.normal);void 0!==d&&n.normal.applyMatrix3(d).normalize();b=0;for(f=s.length;b<f;b++)t=s[b].clone(),void 0!==d&&t.applyMatrix3(d).normalize(),n.vertexNormals.push(t);n.color.copy(g.color);b=0;for(f=r.length;b<f;b++)t=r[b],n.vertexColors.push(t.clone());n.materialIndex=g.materialIndex+c;h.push(n)}p=0;for(q=a.length;p<q;p++)if(c=a[p],d=[],void 0!==c){b=0;for(f=c.length;b<f;b++)d.push(c[b].clone());l.push(d)}}},mergeMesh:function(a){!1===a instanceof THREE.Mesh?THREE.error("THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.",
+a):(a.matrixAutoUpdate&&a.updateMatrix(),this.merge(a.geometry,a.matrix))},mergeVertices:function(){var a={},b=[],c=[],d,e=Math.pow(10,4),f,g;f=0;for(g=this.vertices.length;f<g;f++)d=this.vertices[f],d=Math.round(d.x*e)+"_"+Math.round(d.y*e)+"_"+Math.round(d.z*e),void 0===a[d]?(a[d]=f,b.push(this.vertices[f]),c[f]=b.length-1):c[f]=c[a[d]];a=[];f=0;for(g=this.faces.length;f<g;f++)for(e=this.faces[f],e.a=c[e.a],e.b=c[e.b],e.c=c[e.c],e=[e.a,e.b,e.c],d=0;3>d;d++)if(e[d]==e[(d+1)%3]){a.push(f);break}for(f=
+a.length-1;0<=f;f--)for(e=a[f],this.faces.splice(e,1),c=0,g=this.faceVertexUvs.length;c<g;c++)this.faceVertexUvs[c].splice(e,1);f=this.vertices.length-b.length;this.vertices=b;return f},toJSON:function(){function a(a,b,c){return c?a|1<<b:a&~(1<<b)}function b(a){var b=a.x.toString()+a.y.toString()+a.z.toString();if(void 0!==l[b])return l[b];l[b]=k.length/3;k.push(a.x,a.y,a.z);return l[b]}function c(a){var b=a.r.toString()+a.g.toString()+a.b.toString();if(void 0!==q[b])return q[b];q[b]=p.length;p.push(a.getHex());
+return q[b]}function d(a){var b=a.x.toString()+a.y.toString();if(void 0!==t[b])return t[b];t[b]=n.length/2;n.push(a.x,a.y);return t[b]}var e={metadata:{version:4,type:"BufferGeometry",generator:"BufferGeometryExporter"},uuid:this.uuid,type:this.type};""!==this.name&&(e.name=this.name);if(void 0!==this.parameters){var f=this.parameters,g;for(g in f)void 0!==f[g]&&(e[g]=f[g]);return e}f=[];for(g=0;g<this.vertices.length;g++){var h=this.vertices[g];f.push(h.x,h.y,h.z)}var h=[],k=[],l={},p=[],q={},n=
+[],t={};for(g=0;g<this.faces.length;g++){var s=this.faces[g],r=void 0!==this.faceVertexUvs[0][g],u=0<s.normal.length(),v=0<s.vertexNormals.length,x=1!==s.color.r||1!==s.color.g||1!==s.color.b,D=0<s.vertexColors.length,w=0,w=a(w,0,0),w=a(w,1,!1),w=a(w,2,!1),w=a(w,3,r),w=a(w,4,u),w=a(w,5,v),w=a(w,6,x),w=a(w,7,D);h.push(w);h.push(s.a,s.b,s.c);r&&(r=this.faceVertexUvs[0][g],h.push(d(r[0]),d(r[1]),d(r[2])));u&&h.push(b(s.normal));v&&(u=s.vertexNormals,h.push(b(u[0]),b(u[1]),b(u[2])));x&&h.push(c(s.color));
+D&&(s=s.vertexColors,h.push(c(s[0]),c(s[1]),c(s[2])))}e.data={};e.data.vertices=f;e.data.normals=k;0<p.length&&(e.data.colors=p);0<n.length&&(e.data.uvs=[n]);e.data.faces=h;return e},clone:function(){for(var a=new THREE.Geometry,b=this.vertices,c=0,d=b.length;c<d;c++)a.vertices.push(b[c].clone());b=this.faces;c=0;for(d=b.length;c<d;c++)a.faces.push(b[c].clone());c=0;for(d=this.faceVertexUvs.length;c<d;c++){b=this.faceVertexUvs[c];void 0===a.faceVertexUvs[c]&&(a.faceVertexUvs[c]=[]);for(var e=0,f=
+b.length;e<f;e++){for(var g=b[e],h=[],k=0,l=g.length;k<l;k++)h.push(g[k].clone());a.faceVertexUvs[c].push(h)}}return a},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.Geometry.prototype);THREE.GeometryIdCount=0;THREE.Camera=function(){THREE.Object3D.call(this);this.type="Camera";this.matrixWorldInverse=new THREE.Matrix4;this.projectionMatrix=new THREE.Matrix4};THREE.Camera.prototype=Object.create(THREE.Object3D.prototype);
+THREE.Camera.prototype.constructor=THREE.Camera;THREE.Camera.prototype.getWorldDirection=function(){var a=new THREE.Quaternion;return function(b){b=b||new THREE.Vector3;this.getWorldQuaternion(a);return b.set(0,0,-1).applyQuaternion(a)}}();THREE.Camera.prototype.lookAt=function(){var a=new THREE.Matrix4;return function(b){a.lookAt(this.position,b,this.up);this.quaternion.setFromRotationMatrix(a)}}();
+THREE.Camera.prototype.clone=function(a){void 0===a&&(a=new THREE.Camera);THREE.Object3D.prototype.clone.call(this,a);a.matrixWorldInverse.copy(this.matrixWorldInverse);a.projectionMatrix.copy(this.projectionMatrix);return a};
 THREE.CubeCamera=function(a,b,c){THREE.Object3D.call(this);this.type="CubeCamera";var d=new THREE.PerspectiveCamera(90,1,a,b);d.up.set(0,-1,0);d.lookAt(new THREE.Vector3(1,0,0));this.add(d);var e=new THREE.PerspectiveCamera(90,1,a,b);e.up.set(0,-1,0);e.lookAt(new THREE.Vector3(-1,0,0));this.add(e);var f=new THREE.PerspectiveCamera(90,1,a,b);f.up.set(0,0,1);f.lookAt(new THREE.Vector3(0,1,0));this.add(f);var g=new THREE.PerspectiveCamera(90,1,a,b);g.up.set(0,0,-1);g.lookAt(new THREE.Vector3(0,-1,0));
 this.add(g);var h=new THREE.PerspectiveCamera(90,1,a,b);h.up.set(0,-1,0);h.lookAt(new THREE.Vector3(0,0,1));this.add(h);var k=new THREE.PerspectiveCamera(90,1,a,b);k.up.set(0,-1,0);k.lookAt(new THREE.Vector3(0,0,-1));this.add(k);this.renderTarget=new THREE.WebGLRenderTargetCube(c,c,{format:THREE.RGBFormat,magFilter:THREE.LinearFilter,minFilter:THREE.LinearFilter});this.updateCubeMap=function(a,b){var c=this.renderTarget,n=c.generateMipmaps;c.generateMipmaps=!1;c.activeCubeFace=0;a.render(b,d,c);c.activeCubeFace=
 1;a.render(b,e,c);c.activeCubeFace=2;a.render(b,f,c);c.activeCubeFace=3;a.render(b,g,c);c.activeCubeFace=4;a.render(b,h,c);c.generateMipmaps=n;c.activeCubeFace=5;a.render(b,k,c)}};THREE.CubeCamera.prototype=Object.create(THREE.Object3D.prototype);THREE.CubeCamera.prototype.constructor=THREE.CubeCamera;