diff --git a/build/three.js b/build/three.js
index fd3c4ef83d63c3414c0af040d6f519b18a59de71..77b437c8939e3f30ef72a5ded7de0e9d47feecba 100644
--- a/build/three.js
+++ b/build/three.js
@@ -3466,48 +3466,52 @@ THREE.Box3.prototype = {
 
 	},
 
-	setFromPoints: function ( points ) {
+	addPoint: function ( point ) {
 
-		if ( points.length > 0 ) {
+		if ( point.x < this.min.x ) {
 
-			var point = points[ 0 ];
+			this.min.x = point.x;
 
-			this.min.copy( point );
-			this.max.copy( point );
+		} else if ( point.x > this.max.x ) {
 
-			for ( var i = 1, il = points.length; i < il; i ++ ) {
+			this.max.x = point.x;
 
-				point = points[ i ];
+		}
 
-				if ( point.x < this.min.x ) {
+		if ( point.y < this.min.y ) {
 
-					this.min.x = point.x;
+			this.min.y = point.y;
 
-				} else if ( point.x > this.max.x ) {
+		} else if ( point.y > this.max.y ) {
 
-					this.max.x = point.x;
+			this.max.y = point.y;
 
-				}
+		}
 
-				if ( point.y < this.min.y ) {
+		if ( point.z < this.min.z ) {
 
-					this.min.y = point.y;
+			this.min.z = point.z;
 
-				} else if ( point.y > this.max.y ) {
+		} else if ( point.z > this.max.z ) {
 
-					this.max.y = point.y;
+			this.max.z = point.z;
 
-				}
+		}
 
-				if ( point.z < this.min.z ) {
+	},
 
-					this.min.z = point.z;
+	setFromPoints: function ( points ) {
 
-				} else if ( point.z > this.max.z ) {
+		if ( points.length > 0 ) {
 
-					this.max.z = point.z;
+			var point = points[ 0 ];
 
-				}
+			this.min.copy( point );
+			this.max.copy( point );
+
+			for ( var i = 1, il = points.length; i < il; i ++ ) {
+
+				this.addPoint( points[ i ] )
 
 			}
 
@@ -5505,25 +5509,30 @@ THREE.Sphere.prototype = {
 
 	setFromPoints: function () {
 
-		var _box = new THREE.Box3();
-		var _center = new THREE.Vector3();
+		var box = new THREE.Box3();
 
 		return function ( points, optionalCenter )  {
 
-			// use boundingBox center as sphere center
+			var center = this.center;
+
+			if ( optionalCenter !== undefined ) {
 
-			var center = optionalCenter || _box.setFromPoints( points ).center( _center );
+				center.copy( optionalCenter );
+
+			} else {
+
+				box.setFromPoints( points ).center( center );
+
+			}
 
 			var maxRadiusSq = 0;
 
 			for ( var i = 0, il = points.length; i < il; i ++ ) {
 
-				var radiusSq = center.distanceToSquared( points[ i ] );
-				maxRadiusSq = Math.max( maxRadiusSq, radiusSq );
+				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );
 
 			}
 
-			this.center.copy( center );
 			this.radius = Math.sqrt( maxRadiusSq );
 
 			return this;			
@@ -9108,35 +9117,48 @@ THREE.BufferGeometry.prototype = {
 
 	computeBoundingSphere: function () {
 
-		if ( this.boundingSphere === null ) {
+		var box = new THREE.Box3();
+		var vector = new THREE.Vector3();
 
-			this.boundingSphere = new THREE.Sphere();
+		return function () {
 
-		}
+			if ( this.boundingSphere === null ) {
 
-		var positions = this.attributes[ "position" ].array;
+				this.boundingSphere = new THREE.Sphere();
 
-		if ( positions ) {
+			}
 
-			var radiusSq, maxRadiusSq = 0;
-			var x, y, z;
+			var positions = this.attributes[ "position" ].array;
 
-			for ( var i = 0, il = positions.length; i < il; i += 3 ) {
+			if ( positions ) {
 
-				x = positions[ i ];
-				y = positions[ i + 1 ];
-				z = positions[ i + 2 ];
+				var center = this.boundingSphere.center;
 
-				radiusSq =  x * x + y * y + z * z;
-				if ( radiusSq > maxRadiusSq ) maxRadiusSq = radiusSq;
+				for ( var i = 0, il = positions.length; i < il; i += 3 ) {
 
-			}
+					vector.set( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] );
+					box.addPoint( vector );
+
+				}
+
+				box.center( center );
+
+				var maxRadiusSq = 0;
+
+				for ( var i = 0, il = positions.length; i < il; i += 3 ) {
 
-			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+					vector.set( positions[ i ], positions[ i + 1 ], positions[ i + 2 ] );
+					maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( vector ) );
+
+				}
+
+				this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+
+			}
 
 		}
 
-	},
+	}(),
 
 	computeVertexNormals: function () {
 
@@ -11223,7 +11245,7 @@ THREE.BufferGeometryLoader.prototype = {
 
 		if ( boundingSphere !== undefined ) {
 
-			geometry.boundingSphere = new THREE.Sphere( undefined, boundingSphere.radius );
+			geometry.boundingSphere = new THREE.Sphere( boundingSphere.center, boundingSphere.radius );
 
 		}
 
diff --git a/build/three.min.js b/build/three.min.js
index 39a2d90a5f7a0350429c83840659ea3f8782aa3b..d157c1728ed24705b00cebb3cc323a1e189527d8 100644
--- a/build/three.min.js
+++ b/build/three.min.js
@@ -71,9 +71,9 @@ this.min.copy(b).sub(d);this.max.copy(b).add(d);return this}}(),copy:function(a)
 this.max.max(a);return this},expandByVector:function(a){this.min.sub(a);this.max.add(a);return this},expandByScalar:function(a){this.min.addScalar(-a);this.max.addScalar(a);return this},containsPoint:function(a){return a.x<this.min.x||a.x>this.max.x||a.y<this.min.y||a.y>this.max.y?!1:!0},containsBox:function(a){return this.min.x<=a.min.x&&a.max.x<=this.max.x&&this.min.y<=a.min.y&&a.max.y<=this.max.y?!0:!1},getParameter:function(a){return new THREE.Vector2((a.x-this.min.x)/(this.max.x-this.min.x),
 (a.y-this.min.y)/(this.max.y-this.min.y))},isIntersectionBox:function(a){return a.max.x<this.min.x||a.min.x>this.max.x||a.max.y<this.min.y||a.min.y>this.max.y?!1:!0},clampPoint:function(a,b){return(b||new THREE.Vector2).copy(a).clamp(this.min,this.max)},distanceToPoint:function(){var a=new THREE.Vector2;return function(b){return a.copy(b).clamp(this.min,this.max).sub(b).length()}}(),intersect:function(a){this.min.max(a.min);this.max.min(a.max);return this},union:function(a){this.min.min(a.min);this.max.max(a.max);
 return this},translate:function(a){this.min.add(a);this.max.add(a);return this},equals:function(a){return a.min.equals(this.min)&&a.max.equals(this.max)},clone:function(){return(new THREE.Box2).copy(this)}};THREE.Box3=function(a,b){this.min=void 0!==a?a:new THREE.Vector3(Infinity,Infinity,Infinity);this.max=void 0!==b?b:new THREE.Vector3(-Infinity,-Infinity,-Infinity)};
-THREE.Box3.prototype={constructor:THREE.Box3,set:function(a,b){this.min.copy(a);this.max.copy(b);return this},setFromPoints:function(a){if(0<a.length){var b=a[0];this.min.copy(b);this.max.copy(b);for(var c=1,d=a.length;c<d;c++)b=a[c],b.x<this.min.x?this.min.x=b.x:b.x>this.max.x&&(this.max.x=b.x),b.y<this.min.y?this.min.y=b.y:b.y>this.max.y&&(this.max.y=b.y),b.z<this.min.z?this.min.z=b.z:b.z>this.max.z&&(this.max.z=b.z)}else this.makeEmpty();return this},setFromCenterAndSize:function(){var a=new THREE.Vector3;
-return function(b,c){var d=a.copy(c).multiplyScalar(0.5);this.min.copy(b).sub(d);this.max.copy(b).add(d);return this}}(),setFromObject:function(){var a=new THREE.Vector3;return function(b){var c=this;b.updateMatrixWorld(!0);this.makeEmpty();b.traverse(function(b){if(void 0!==b.geometry&&void 0!==b.geometry.vertices)for(var e=b.geometry.vertices,f=0,h=e.length;f<h;f++)a.copy(e[f]),a.applyMatrix4(b.matrixWorld),c.expandByPoint(a)});return this}}(),copy:function(a){this.min.copy(a.min);this.max.copy(a.max);
-return this},makeEmpty:function(){this.min.x=this.min.y=this.min.z=Infinity;this.max.x=this.max.y=this.max.z=-Infinity;return this},empty:function(){return this.max.x<this.min.x||this.max.y<this.min.y||this.max.z<this.min.z},center:function(a){return(a||new THREE.Vector3).addVectors(this.min,this.max).multiplyScalar(0.5)},size:function(a){return(a||new THREE.Vector3).subVectors(this.max,this.min)},expandByPoint:function(a){this.min.min(a);this.max.max(a);return this},expandByVector:function(a){this.min.sub(a);
+THREE.Box3.prototype={constructor:THREE.Box3,set:function(a,b){this.min.copy(a);this.max.copy(b);return this},addPoint:function(a){a.x<this.min.x?this.min.x=a.x:a.x>this.max.x&&(this.max.x=a.x);a.y<this.min.y?this.min.y=a.y:a.y>this.max.y&&(this.max.y=a.y);a.z<this.min.z?this.min.z=a.z:a.z>this.max.z&&(this.max.z=a.z)},setFromPoints:function(a){if(0<a.length){var b=a[0];this.min.copy(b);this.max.copy(b);for(var b=1,c=a.length;b<c;b++)this.addPoint(a[b])}else this.makeEmpty();return this},setFromCenterAndSize:function(){var a=
+new THREE.Vector3;return function(b,c){var d=a.copy(c).multiplyScalar(0.5);this.min.copy(b).sub(d);this.max.copy(b).add(d);return this}}(),setFromObject:function(){var a=new THREE.Vector3;return function(b){var c=this;b.updateMatrixWorld(!0);this.makeEmpty();b.traverse(function(b){if(void 0!==b.geometry&&void 0!==b.geometry.vertices)for(var e=b.geometry.vertices,f=0,h=e.length;f<h;f++)a.copy(e[f]),a.applyMatrix4(b.matrixWorld),c.expandByPoint(a)});return this}}(),copy:function(a){this.min.copy(a.min);
+this.max.copy(a.max);return this},makeEmpty:function(){this.min.x=this.min.y=this.min.z=Infinity;this.max.x=this.max.y=this.max.z=-Infinity;return this},empty:function(){return this.max.x<this.min.x||this.max.y<this.min.y||this.max.z<this.min.z},center:function(a){return(a||new THREE.Vector3).addVectors(this.min,this.max).multiplyScalar(0.5)},size:function(a){return(a||new THREE.Vector3).subVectors(this.max,this.min)},expandByPoint:function(a){this.min.min(a);this.max.max(a);return this},expandByVector:function(a){this.min.sub(a);
 this.max.add(a);return this},expandByScalar:function(a){this.min.addScalar(-a);this.max.addScalar(a);return this},containsPoint:function(a){return a.x<this.min.x||a.x>this.max.x||a.y<this.min.y||a.y>this.max.y||a.z<this.min.z||a.z>this.max.z?!1:!0},containsBox:function(a){return this.min.x<=a.min.x&&a.max.x<=this.max.x&&this.min.y<=a.min.y&&a.max.y<=this.max.y&&this.min.z<=a.min.z&&a.max.z<=this.max.z?!0:!1},getParameter:function(a){return new THREE.Vector3((a.x-this.min.x)/(this.max.x-this.min.x),
 (a.y-this.min.y)/(this.max.y-this.min.y),(a.z-this.min.z)/(this.max.z-this.min.z))},isIntersectionBox:function(a){return a.max.x<this.min.x||a.min.x>this.max.x||a.max.y<this.min.y||a.min.y>this.max.y||a.max.z<this.min.z||a.min.z>this.max.z?!1:!0},clampPoint:function(a,b){return(b||new THREE.Vector3).copy(a).clamp(this.min,this.max)},distanceToPoint:function(){var a=new THREE.Vector3;return function(b){return a.copy(b).clamp(this.min,this.max).sub(b).length()}}(),getBoundingSphere:function(){var a=
 new THREE.Vector3;return function(b){b=b||new THREE.Sphere;b.center=this.center();b.radius=0.5*this.size(a).length();return b}}(),intersect:function(a){this.min.max(a.min);this.max.min(a.max);return this},union:function(a){this.min.min(a.min);this.max.max(a.max);return this},applyMatrix4:function(){var a=[new THREE.Vector3,new THREE.Vector3,new THREE.Vector3,new THREE.Vector3,new THREE.Vector3,new THREE.Vector3,new THREE.Vector3,new THREE.Vector3];return function(b){a[0].set(this.min.x,this.min.y,
@@ -113,7 +113,7 @@ g=this.origin.clone().sub(e),a=-this.direction.dot(f),b=g.dot(this.direction),i=
 a.max.y-g.y):(e=(a.max.y-g.y)*f,f*=a.min.y-g.y);if(c>f||e>d)return null;if(e>c||c!==c)c=e;if(f<d||d!==d)d=f;0<=h?(e=(a.min.z-g.z)*h,h*=a.max.z-g.z):(e=(a.max.z-g.z)*h,h*=a.min.z-g.z);if(c>h||e>d)return null;if(e>c||c!==c)c=e;if(h<d||d!==d)d=h;return 0>d?null:this.at(0<=c?c:d,b)},intersectTriangle:function(){var a=new THREE.Vector3,b=new THREE.Vector3,c=new THREE.Vector3,d=new THREE.Vector3;return function(e,f,h,g,i){b.subVectors(f,e);c.subVectors(h,e);d.crossVectors(b,c);f=this.direction.dot(d);if(0<
 f){if(g)return null;g=1}else if(0>f)g=-1,f=-f;else return null;a.subVectors(this.origin,e);e=g*this.direction.dot(c.crossVectors(a,c));if(0>e)return null;h=g*this.direction.dot(b.cross(a));if(0>h||e+h>f)return null;e=-g*a.dot(d);return 0>e?null:this.at(e/f,i)}}(),applyMatrix4:function(a){this.direction.add(this.origin).applyMatrix4(a);this.origin.applyMatrix4(a);this.direction.sub(this.origin);this.direction.normalize();return this},equals:function(a){return a.origin.equals(this.origin)&&a.direction.equals(this.direction)},
 clone:function(){return(new THREE.Ray).copy(this)}};THREE.Sphere=function(a,b){this.center=void 0!==a?a:new THREE.Vector3;this.radius=void 0!==b?b:0};
-THREE.Sphere.prototype={constructor:THREE.Sphere,set:function(a,b){this.center.copy(a);this.radius=b;return this},setFromPoints:function(){var a=new THREE.Box3,b=new THREE.Vector3;return function(c,d){for(var e=d||a.setFromPoints(c).center(b),f=0,h=0,g=c.length;h<g;h++)var i=e.distanceToSquared(c[h]),f=Math.max(f,i);this.center.copy(e);this.radius=Math.sqrt(f);return this}}(),copy:function(a){this.center.copy(a.center);this.radius=a.radius;return this},empty:function(){return 0>=this.radius},containsPoint:function(a){return a.distanceToSquared(this.center)<=
+THREE.Sphere.prototype={constructor:THREE.Sphere,set:function(a,b){this.center.copy(a);this.radius=b;return this},setFromPoints:function(){var a=new THREE.Box3;return function(b,c){var d=this.center;void 0!==c?d.copy(c):a.setFromPoints(b).center(d);for(var e=0,f=0,h=b.length;f<h;f++)e=Math.max(e,d.distanceToSquared(b[f]));this.radius=Math.sqrt(e);return this}}(),copy:function(a){this.center.copy(a.center);this.radius=a.radius;return this},empty:function(){return 0>=this.radius},containsPoint:function(a){return a.distanceToSquared(this.center)<=
 this.radius*this.radius},distanceToPoint:function(a){return a.distanceTo(this.center)-this.radius},intersectsSphere:function(a){var b=this.radius+a.radius;return a.center.distanceToSquared(this.center)<=b*b},clampPoint:function(a,b){var c=this.center.distanceToSquared(a),d=b||new THREE.Vector3;d.copy(a);c>this.radius*this.radius&&(d.sub(this.center).normalize(),d.multiplyScalar(this.radius).add(this.center));return d},getBoundingBox:function(a){a=a||new THREE.Box3;a.set(this.center,this.center);a.expandByScalar(this.radius);
 return a},applyMatrix4:function(a){this.center.applyMatrix4(a);this.radius*=a.getMaxScaleOnAxis();return this},translate:function(a){this.center.add(a);return this},equals:function(a){return a.center.equals(this.center)&&a.radius===this.radius},clone:function(){return(new THREE.Sphere).copy(this)}};THREE.Frustum=function(a,b,c,d,e,f){this.planes=[void 0!==a?a:new THREE.Plane,void 0!==b?b:new THREE.Plane,void 0!==c?c:new THREE.Plane,void 0!==d?d:new THREE.Plane,void 0!==e?e:new THREE.Plane,void 0!==f?f:new THREE.Plane]};
 THREE.Frustum.prototype={constructor:THREE.Frustum,set:function(a,b,c,d,e,f){var h=this.planes;h[0].copy(a);h[1].copy(b);h[2].copy(c);h[3].copy(d);h[4].copy(e);h[5].copy(f);return this},copy:function(a){for(var b=this.planes,c=0;6>c;c++)b[c].copy(a.planes[c]);return this},setFromMatrix:function(a){var b=this.planes,c=a.elements,a=c[0],d=c[1],e=c[2],f=c[3],h=c[4],g=c[5],i=c[6],k=c[7],m=c[8],l=c[9],n=c[10],s=c[11],q=c[12],p=c[13],r=c[14],c=c[15];b[0].setComponents(f-a,k-h,s-m,c-q).normalize();b[1].setComponents(f+
@@ -184,14 +184,15 @@ a},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new
 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(h=this.faces.length;f<h;f++){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];for(d=0;3>d;d++)if(e[d]==e[(d+1)%3]){a.push(f);break}}for(f=a.length-1;0<=f;f--){this.faces.splice(f,1);c=0;for(h=this.faceVertexUvs.length;c<h;c++)this.faceVertexUvs[c].splice(f,1)}f=this.vertices.length-b.length;this.vertices=b;return f},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());b=this.faceVertexUvs[0];c=0;for(d=b.length;c<d;c++){for(var e=b[c],f=[],h=0,g=e.length;h<g;h++)f.push(new THREE.Vector2(e[h].x,e[h].y));a.faceVertexUvs[0].push(f)}return a},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.Geometry.prototype);THREE.GeometryIdCount=0;THREE.BufferGeometry=function(){this.id=THREE.GeometryIdCount++;this.uuid=THREE.Math.generateUUID();this.name="";this.attributes={};this.dynamic=!0;this.offsets=[];this.boundingSphere=this.boundingBox=null;this.hasTangents=!1;this.morphTargets=[]};
 THREE.BufferGeometry.prototype={constructor:THREE.BufferGeometry,applyMatrix:function(a){var b,c;this.attributes.position&&(b=this.attributes.position.array);this.attributes.normal&&(c=this.attributes.normal.array);void 0!==b&&(a.multiplyVector3Array(b),this.verticesNeedUpdate=!0);void 0!==c&&((new THREE.Matrix3).getNormalMatrix(a).multiplyVector3Array(c),this.normalizeNormals(),this.normalsNeedUpdate=!0)},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new THREE.Box3);var a=
-this.attributes.position.array;if(a){var b=this.boundingBox,c,d,e;3<=a.length&&(b.min.x=b.max.x=a[0],b.min.y=b.max.y=a[1],b.min.z=b.max.z=a[2]);for(var f=3,h=a.length;f<h;f+=3)c=a[f],d=a[f+1],e=a[f+2],c<b.min.x?b.min.x=c:c>b.max.x&&(b.max.x=c),d<b.min.y?b.min.y=d:d>b.max.y&&(b.max.y=d),e<b.min.z?b.min.z=e:e>b.max.z&&(b.max.z=e)}if(void 0===a||0===a.length)this.boundingBox.min.set(0,0,0),this.boundingBox.max.set(0,0,0)},computeBoundingSphere:function(){null===this.boundingSphere&&(this.boundingSphere=
-new THREE.Sphere);var a=this.attributes.position.array;if(a){for(var b,c=0,d,e,f=0,h=a.length;f<h;f+=3)b=a[f],d=a[f+1],e=a[f+2],b=b*b+d*d+e*e,b>c&&(c=b);this.boundingSphere.radius=Math.sqrt(c)}},computeVertexNormals:function(){if(this.attributes.position){var a,b,c,d;a=this.attributes.position.array.length;if(void 0===this.attributes.normal)this.attributes.normal={itemSize:3,array:new Float32Array(a)};else{a=0;for(b=this.attributes.normal.array.length;a<b;a++)this.attributes.normal.array[a]=0}var e=
-this.attributes.position.array,f=this.attributes.normal.array,h,g,i,k,m,l,n=new THREE.Vector3,s=new THREE.Vector3,q=new THREE.Vector3,p=new THREE.Vector3,r=new THREE.Vector3;if(this.attributes.index){var t=this.attributes.index.array,u=this.offsets;c=0;for(d=u.length;c<d;++c){b=u[c].start;h=u[c].count;var w=u[c].index;a=b;for(b+=h;a<b;a+=3)h=w+t[a],g=w+t[a+1],i=w+t[a+2],k=e[3*h],m=e[3*h+1],l=e[3*h+2],n.set(k,m,l),k=e[3*g],m=e[3*g+1],l=e[3*g+2],s.set(k,m,l),k=e[3*i],m=e[3*i+1],l=e[3*i+2],q.set(k,m,
-l),p.subVectors(q,s),r.subVectors(n,s),p.cross(r),f[3*h]+=p.x,f[3*h+1]+=p.y,f[3*h+2]+=p.z,f[3*g]+=p.x,f[3*g+1]+=p.y,f[3*g+2]+=p.z,f[3*i]+=p.x,f[3*i+1]+=p.y,f[3*i+2]+=p.z}}else{a=0;for(b=e.length;a<b;a+=9)k=e[a],m=e[a+1],l=e[a+2],n.set(k,m,l),k=e[a+3],m=e[a+4],l=e[a+5],s.set(k,m,l),k=e[a+6],m=e[a+7],l=e[a+8],q.set(k,m,l),p.subVectors(q,s),r.subVectors(n,s),p.cross(r),f[a]=p.x,f[a+1]=p.y,f[a+2]=p.z,f[a+3]=p.x,f[a+4]=p.y,f[a+5]=p.z,f[a+6]=p.x,f[a+7]=p.y,f[a+8]=p.z}this.normalizeNormals();this.normalsNeedUpdate=
-!0}},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},computeTangents:function(){function a(a){qa.x=d[3*a];qa.y=d[3*a+1];qa.z=d[3*a+2];ra.copy(qa);M=g[a];J.copy(M);J.sub(qa.multiplyScalar(qa.dot(M))).normalize();ca.crossVectors(ra,M);Q=ca.dot(i[a]);N=0>Q?-1:1;h[4*a]=J.x;h[4*a+1]=J.y;h[4*a+2]=J.z;h[4*a+3]=N}if(void 0===this.attributes.index||void 0===this.attributes.position||
-void 0===this.attributes.normal||void 0===this.attributes.uv)console.warn("Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");else{var b=this.attributes.index.array,c=this.attributes.position.array,d=this.attributes.normal.array,e=this.attributes.uv.array,f=c.length/3;void 0===this.attributes.tangent&&(this.attributes.tangent={itemSize:4,array:new Float32Array(4*f)});for(var h=this.attributes.tangent.array,g=[],i=[],k=0;k<f;k++)g[k]=new THREE.Vector3,
-i[k]=new THREE.Vector3;var m,l,n,s,q,p,r,t,u,w,F,B,z,G,E,f=new THREE.Vector3,k=new THREE.Vector3,v,O,A,D,I,C,x,y=this.offsets;A=0;for(D=y.length;A<D;++A){O=y[A].start;I=y[A].count;var R=y[A].index;v=O;for(O+=I;v<O;v+=3)I=R+b[v],C=R+b[v+1],x=R+b[v+2],m=c[3*I],l=c[3*I+1],n=c[3*I+2],s=c[3*C],q=c[3*C+1],p=c[3*C+2],r=c[3*x],t=c[3*x+1],u=c[3*x+2],w=e[2*I],F=e[2*I+1],B=e[2*C],z=e[2*C+1],G=e[2*x],E=e[2*x+1],s-=m,m=r-m,q-=l,l=t-l,p-=n,n=u-n,B-=w,w=G-w,z-=F,F=E-F,E=1/(B*F-w*z),f.set((F*s-z*m)*E,(F*q-z*l)*E,
-(F*p-z*n)*E),k.set((B*m-w*s)*E,(B*l-w*q)*E,(B*n-w*p)*E),g[I].add(f),g[C].add(f),g[x].add(f),i[I].add(k),i[C].add(k),i[x].add(k)}var J=new THREE.Vector3,ca=new THREE.Vector3,qa=new THREE.Vector3,ra=new THREE.Vector3,N,M,Q;A=0;for(D=y.length;A<D;++A){O=y[A].start;I=y[A].count;R=y[A].index;v=O;for(O+=I;v<O;v+=3)I=R+b[v],C=R+b[v+1],x=R+b[v+2],a(I),a(C),a(x)}this.tangentsNeedUpdate=this.hasTangents=!0}},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.BufferGeometry.prototype);THREE.Camera=function(){THREE.Object3D.call(this);this.matrixWorldInverse=new THREE.Matrix4;this.projectionMatrix=new THREE.Matrix4;this.projectionMatrixInverse=new THREE.Matrix4};THREE.Camera.prototype=Object.create(THREE.Object3D.prototype);THREE.Camera.prototype.lookAt=function(){var a=new THREE.Matrix4;return function(b){a.lookAt(this.position,b,this.up);this.quaternion.setFromRotationMatrix(a)}}();
+this.attributes.position.array;if(a){var b=this.boundingBox,c,d,e;3<=a.length&&(b.min.x=b.max.x=a[0],b.min.y=b.max.y=a[1],b.min.z=b.max.z=a[2]);for(var f=3,h=a.length;f<h;f+=3)c=a[f],d=a[f+1],e=a[f+2],c<b.min.x?b.min.x=c:c>b.max.x&&(b.max.x=c),d<b.min.y?b.min.y=d:d>b.max.y&&(b.max.y=d),e<b.min.z?b.min.z=e:e>b.max.z&&(b.max.z=e)}if(void 0===a||0===a.length)this.boundingBox.min.set(0,0,0),this.boundingBox.max.set(0,0,0)},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){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.addPoint(b);a.center(d);for(var h=0,e=0,f=c.length;e<f;e+=3)b.set(c[e],c[e+1],c[e+2]),h=Math.max(h,d.distanceToSquared(b));this.boundingSphere.radius=Math.sqrt(h)}}}(),computeVertexNormals:function(){if(this.attributes.position){var a,b,c,d;a=this.attributes.position.array.length;if(void 0===this.attributes.normal)this.attributes.normal=
+{itemSize:3,array:new Float32Array(a)};else{a=0;for(b=this.attributes.normal.array.length;a<b;a++)this.attributes.normal.array[a]=0}var e=this.attributes.position.array,f=this.attributes.normal.array,h,g,i,k,m,l,n=new THREE.Vector3,s=new THREE.Vector3,q=new THREE.Vector3,p=new THREE.Vector3,r=new THREE.Vector3;if(this.attributes.index){var t=this.attributes.index.array,u=this.offsets;c=0;for(d=u.length;c<d;++c){b=u[c].start;h=u[c].count;var w=u[c].index;a=b;for(b+=h;a<b;a+=3)h=w+t[a],g=w+t[a+1],i=
+w+t[a+2],k=e[3*h],m=e[3*h+1],l=e[3*h+2],n.set(k,m,l),k=e[3*g],m=e[3*g+1],l=e[3*g+2],s.set(k,m,l),k=e[3*i],m=e[3*i+1],l=e[3*i+2],q.set(k,m,l),p.subVectors(q,s),r.subVectors(n,s),p.cross(r),f[3*h]+=p.x,f[3*h+1]+=p.y,f[3*h+2]+=p.z,f[3*g]+=p.x,f[3*g+1]+=p.y,f[3*g+2]+=p.z,f[3*i]+=p.x,f[3*i+1]+=p.y,f[3*i+2]+=p.z}}else{a=0;for(b=e.length;a<b;a+=9)k=e[a],m=e[a+1],l=e[a+2],n.set(k,m,l),k=e[a+3],m=e[a+4],l=e[a+5],s.set(k,m,l),k=e[a+6],m=e[a+7],l=e[a+8],q.set(k,m,l),p.subVectors(q,s),r.subVectors(n,s),p.cross(r),
+f[a]=p.x,f[a+1]=p.y,f[a+2]=p.z,f[a+3]=p.x,f[a+4]=p.y,f[a+5]=p.z,f[a+6]=p.x,f[a+7]=p.y,f[a+8]=p.z}this.normalizeNormals();this.normalsNeedUpdate=!0}},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},computeTangents:function(){function a(a){qa.x=d[3*a];qa.y=d[3*a+1];qa.z=d[3*a+2];ra.copy(qa);M=g[a];J.copy(M);J.sub(qa.multiplyScalar(qa.dot(M))).normalize();ca.crossVectors(ra,
+M);Q=ca.dot(i[a]);N=0>Q?-1:1;h[4*a]=J.x;h[4*a+1]=J.y;h[4*a+2]=J.z;h[4*a+3]=N}if(void 0===this.attributes.index||void 0===this.attributes.position||void 0===this.attributes.normal||void 0===this.attributes.uv)console.warn("Missing required attributes (index, position, normal or uv) in BufferGeometry.computeTangents()");else{var b=this.attributes.index.array,c=this.attributes.position.array,d=this.attributes.normal.array,e=this.attributes.uv.array,f=c.length/3;void 0===this.attributes.tangent&&(this.attributes.tangent=
+{itemSize:4,array:new Float32Array(4*f)});for(var h=this.attributes.tangent.array,g=[],i=[],k=0;k<f;k++)g[k]=new THREE.Vector3,i[k]=new THREE.Vector3;var m,l,n,s,q,p,r,t,u,w,F,B,z,G,E,f=new THREE.Vector3,k=new THREE.Vector3,v,O,A,D,I,C,x,y=this.offsets;A=0;for(D=y.length;A<D;++A){O=y[A].start;I=y[A].count;var R=y[A].index;v=O;for(O+=I;v<O;v+=3)I=R+b[v],C=R+b[v+1],x=R+b[v+2],m=c[3*I],l=c[3*I+1],n=c[3*I+2],s=c[3*C],q=c[3*C+1],p=c[3*C+2],r=c[3*x],t=c[3*x+1],u=c[3*x+2],w=e[2*I],F=e[2*I+1],B=e[2*C],z=
+e[2*C+1],G=e[2*x],E=e[2*x+1],s-=m,m=r-m,q-=l,l=t-l,p-=n,n=u-n,B-=w,w=G-w,z-=F,F=E-F,E=1/(B*F-w*z),f.set((F*s-z*m)*E,(F*q-z*l)*E,(F*p-z*n)*E),k.set((B*m-w*s)*E,(B*l-w*q)*E,(B*n-w*p)*E),g[I].add(f),g[C].add(f),g[x].add(f),i[I].add(k),i[C].add(k),i[x].add(k)}var J=new THREE.Vector3,ca=new THREE.Vector3,qa=new THREE.Vector3,ra=new THREE.Vector3,N,M,Q;A=0;for(D=y.length;A<D;++A){O=y[A].start;I=y[A].count;R=y[A].index;v=O;for(O+=I;v<O;v+=3)I=R+b[v],C=R+b[v+1],x=R+b[v+2],a(I),a(C),a(x)}this.tangentsNeedUpdate=
+this.hasTangents=!0}},dispose:function(){this.dispatchEvent({type:"dispose"})}};THREE.EventDispatcher.prototype.apply(THREE.BufferGeometry.prototype);THREE.Camera=function(){THREE.Object3D.call(this);this.matrixWorldInverse=new THREE.Matrix4;this.projectionMatrix=new THREE.Matrix4;this.projectionMatrixInverse=new THREE.Matrix4};THREE.Camera.prototype=Object.create(THREE.Object3D.prototype);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);a.projectionMatrixInverse.copy(this.projectionMatrixInverse);return a};THREE.OrthographicCamera=function(a,b,c,d,e,f){THREE.Camera.call(this);this.left=a;this.right=b;this.top=c;this.bottom=d;this.near=void 0!==e?e:0.1;this.far=void 0!==f?f:2E3;this.updateProjectionMatrix()};THREE.OrthographicCamera.prototype=Object.create(THREE.Camera.prototype);THREE.OrthographicCamera.prototype.updateProjectionMatrix=function(){this.projectionMatrix.makeOrthographic(this.left,this.right,this.top,this.bottom,this.near,this.far)};
 THREE.OrthographicCamera.prototype.clone=function(){var a=new THREE.OrthographicCamera;THREE.Camera.prototype.clone.call(this,a);a.left=this.left;a.right=this.right;a.top=this.top;a.bottom=this.bottom;a.near=this.near;a.far=this.far;return a};THREE.PerspectiveCamera=function(a,b,c,d){THREE.Camera.call(this);this.fov=void 0!==a?a:50;this.aspect=void 0!==b?b:1;this.near=void 0!==c?c:0.1;this.far=void 0!==d?d:2E3;this.updateProjectionMatrix()};THREE.PerspectiveCamera.prototype=Object.create(THREE.Camera.prototype);THREE.PerspectiveCamera.prototype.setLens=function(a,b){void 0===b&&(b=24);this.fov=2*THREE.Math.radToDeg(Math.atan(b/(2*a)));this.updateProjectionMatrix()};
 THREE.PerspectiveCamera.prototype.setViewOffset=function(a,b,c,d,e,f){this.fullWidth=a;this.fullHeight=b;this.x=c;this.y=d;this.width=e;this.height=f;this.updateProjectionMatrix()};
@@ -220,7 +221,7 @@ t=new THREE.Vector2(t,l),c.faceVertexUvs[e][h].push(t)}m&&(m=3*u[g++],s.normal.s
 i;g+=2)u=a.skinIndices[g],w=a.skinIndices[g+1],c.skinIndices.push(new THREE.Vector4(u,w,0,0))}c.bones=a.bones;c.animation=a.animation;if(void 0!==a.morphTargets){g=0;for(i=a.morphTargets.length;g<i;g++){c.morphTargets[g]={};c.morphTargets[g].name=a.morphTargets[g].name;c.morphTargets[g].vertices=[];F=c.morphTargets[g].vertices;B=a.morphTargets[g].vertices;u=0;for(w=B.length;u<w;u+=3)n=new THREE.Vector3,n.x=B[u]*d,n.y=B[u+1]*d,n.z=B[u+2]*d,F.push(n)}}if(void 0!==a.morphColors){g=0;for(i=a.morphColors.length;g<
 i;g++){c.morphColors[g]={};c.morphColors[g].name=a.morphColors[g].name;c.morphColors[g].colors=[];w=c.morphColors[g].colors;F=a.morphColors[g].colors;d=0;for(u=F.length;d<u;d+=3)B=new THREE.Color(16755200),B.setRGB(F[d],F[d+1],F[d+2]),w.push(B)}}c.computeCentroids();c.computeFaceNormals();c.computeBoundingSphere();if(void 0===a.materials)return{geometry:c};d=this.initMaterials(a.materials,b);this.needsTangents(d)&&c.computeTangents();return{geometry:c,materials:d}};THREE.LoadingManager=function(a,b,c){var d=this,e=0,f=0;this.onLoad=a;this.onProgress=b;this.onError=c;this.itemStart=function(){f++};this.itemEnd=function(a){e++;if(void 0!==d.onProgress)d.onProgress(a,e,f);if(e===f&&void 0!==d.onLoad)d.onLoad()}};THREE.DefaultLoadingManager=new THREE.LoadingManager;THREE.BufferGeometryLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};
 THREE.BufferGeometryLoader.prototype={constructor:THREE.BufferGeometryLoader,load:function(a,b){var c=this,d=new THREE.XHRLoader;d.setCrossOrigin(this.crossOrigin);d.load(a,function(a){b(c.parse(JSON.parse(a)))})},setCrossOrigin:function(a){this.crossOrigin=a},parse:function(a){var b=new THREE.BufferGeometry,c=a.attributes,d=a.offsets,a=a.boundingSphere,e;for(e in c){var f=c[e];b.attributes[e]={itemSize:f.itemSize,array:new self[f.type](f.array)}}void 0!==d&&(b.offsets=JSON.parse(JSON.stringify(d)));
-void 0!==a&&(b.boundingSphere=new THREE.Sphere(void 0,a.radius));return b}};THREE.GeometryLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};THREE.GeometryLoader.prototype={constructor:THREE.GeometryLoader,load:function(a,b){var c=this,d=new THREE.XHRLoader;d.setCrossOrigin(this.crossOrigin);d.load(a,function(a){b(c.parse(JSON.parse(a)))})},setCrossOrigin:function(a){this.crossOrigin=a},parse:function(){}};THREE.MaterialLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};
+void 0!==a&&(b.boundingSphere=new THREE.Sphere(a.center,a.radius));return b}};THREE.GeometryLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};THREE.GeometryLoader.prototype={constructor:THREE.GeometryLoader,load:function(a,b){var c=this,d=new THREE.XHRLoader;d.setCrossOrigin(this.crossOrigin);d.load(a,function(a){b(c.parse(JSON.parse(a)))})},setCrossOrigin:function(a){this.crossOrigin=a},parse:function(){}};THREE.MaterialLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};
 THREE.MaterialLoader.prototype={constructor:THREE.MaterialLoader,load:function(a,b){var c=this,d=new THREE.XHRLoader;d.setCrossOrigin(this.crossOrigin);d.load(a,function(a){b(c.parse(JSON.parse(a)))})},setCrossOrigin:function(a){this.crossOrigin=a},parse:function(a){var b=new THREE[a.type];void 0!==a.color&&b.color.setHex(a.color);void 0!==a.ambient&&b.ambient.setHex(a.ambient);void 0!==a.emissive&&b.emissive.setHex(a.emissive);void 0!==a.specular&&b.specular.setHex(a.specular);void 0!==a.shininess&&
 (b.shininess=a.shininess);void 0!==a.vertexColors&&(b.vertexColors=a.vertexColors);void 0!==a.blending&&(b.blending=a.blending);void 0!==a.opacity&&(b.opacity=a.opacity);void 0!==a.transparent&&(b.transparent=a.transparent);void 0!==a.wireframe&&(b.wireframe=a.wireframe);if(void 0!==a.materials)for(var c=0,d=a.materials.length;c<d;c++)b.materials.push(this.parse(a.materials[c]));return b}};THREE.ObjectLoader=function(a){this.manager=void 0!==a?a:THREE.DefaultLoadingManager};
 THREE.ObjectLoader.prototype={constructor:THREE.ObjectLoader,load:function(a,b){var c=this,d=new THREE.XHRLoader(c.manager);d.setCrossOrigin(this.crossOrigin);d.load(a,function(a){b(c.parse(JSON.parse(a)))})},setCrossOrigin:function(a){this.crossOrigin=a},parse:function(a){var b=this.parseGeometries(a.geometries),c=this.parseMaterials(a.materials);return this.parseObject(a.object,b,c)},parseGeometries:function(a){var b={};if(void 0!==a)for(var c=new THREE.JSONLoader,d=new THREE.BufferGeometryLoader,