Update builds.

build/three.js

@@ -11374,6 +11374,13 @@
 			var indices = geometry.index !== null ? geometry.index.array : undefined;
 			var attributes = geometry.attributes;
 
+			if ( attributes.position === undefined ) {
+
+				console.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );
+				return this;
+
+			}
+
 			var positions = attributes.position.array;
 			var normals = attributes.normal !== undefined ? attributes.normal.array : undefined;
 			var colors = attributes.color !== undefined ? attributes.color.array : undefined;

build/three.min.js

@@ -539,33 +539,33 @@ p.count,k.start+k.count);z<t;z+=3){if(c=z,y=z+1,x=z+2,c=Fe(this,v,a,tc,e,g,h,l,c
 c&&(l=g[p.a],m=g[p.b],k=g[p.c],c=jh(this,c,a,tc,l,m,k,Dd)))f&&f[r]&&(v=f[r],Ac.copy(v[0]),Bc.copy(v[1]),Cc.copy(v[2]),c.uv=R.getUV(Dd,l,m,k,Ac,Bc,Cc,new w)),c.face=p,c.faceIndex=r,b.push(c)},clone:function(){return(new this.constructor(this.geometry,this.material)).copy(this)}});var Si=0,lb=new V,Wg=new B,yf=new n;F.prototype=Object.assign(Object.create(Ba.prototype),{constructor:F,isGeometry:!0,applyMatrix:function(a){for(var b=(new da).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;return this},rotateX:function(a){lb.makeRotationX(a);this.applyMatrix(lb);return this},rotateY:function(a){lb.makeRotationY(a);this.applyMatrix(lb);return this},
 rotateZ:function(a){lb.makeRotationZ(a);this.applyMatrix(lb);return this},translate:function(a,b,c){lb.makeTranslation(a,b,c);this.applyMatrix(lb);return this},scale:function(a,b,c){lb.makeScale(a,b,c);this.applyMatrix(lb);return this},lookAt:function(a){Wg.lookAt(a);Wg.updateMatrix();this.applyMatrix(Wg.matrix);return this},fromBufferGeometry:function(a){function b(a,b,d,e){var f=void 0===h?[]:[c.colors[a].clone(),c.colors[b].clone(),c.colors[d].clone()],k=void 0===g?[]:[(new n).fromArray(g,3*a),
-(new n).fromArray(g,3*b),(new n).fromArray(g,3*d)];e=new zc(a,b,d,k,f,e);c.faces.push(e);void 0!==l&&c.faceVertexUvs[0].push([(new w).fromArray(l,2*a),(new w).fromArray(l,2*b),(new w).fromArray(l,2*d)]);void 0!==m&&c.faceVertexUvs[1].push([(new w).fromArray(m,2*a),(new w).fromArray(m,2*b),(new w).fromArray(m,2*d)])}var c=this,d=null!==a.index?a.index.array:void 0,e=a.attributes,f=e.position.array,g=void 0!==e.normal?e.normal.array:void 0,h=void 0!==e.color?e.color.array:void 0,l=void 0!==e.uv?e.uv.array:
-void 0,m=void 0!==e.uv2?e.uv2.array:void 0;void 0!==m&&(this.faceVertexUvs[1]=[]);for(e=0;e<f.length;e+=3)c.vertices.push((new n).fromArray(f,e)),void 0!==h&&c.colors.push((new H).fromArray(h,e));var k=a.groups;if(0<k.length)for(e=0;e<k.length;e++){f=k[e];var u=f.start,t=u;for(u+=f.count;t<u;t+=3)void 0!==d?b(d[t],d[t+1],d[t+2],f.materialIndex):b(t,t+1,t+2,f.materialIndex)}else if(void 0!==d)for(e=0;e<d.length;e+=3)b(d[e],d[e+1],d[e+2]);else for(e=0;e<f.length/3;e+=3)b(e,e+1,e+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();this.boundingBox.getCenter(yf).negate();this.translate(yf.x,yf.y,yf.z);return this},normalize:function(){this.computeBoundingSphere();var a=this.boundingSphere.center,b=this.boundingSphere.radius;b=0===b?1:1/b;var c=new V;c.set(b,0,0,-b*a.x,0,b,0,-b*a.y,0,0,b,-b*a.z,0,0,0,1);this.applyMatrix(c);return this},
-computeFaceNormals:function(){for(var a=new n,b=new n,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){void 0===a&&(a=!0);var b;var c=Array(this.vertices.length);var d=0;for(b=this.vertices.length;d<b;d++)c[d]=new n;if(a){var e=new n,f=new n;a=0;for(d=this.faces.length;a<d;a++){b=this.faces[a];var g=this.vertices[b.a];var h=
-this.vertices[b.b];var l=this.vertices[b.c];e.subVectors(l,h);f.subVectors(g,h);e.cross(f);c[b.a].add(e);c[b.b].add(e);c[b.c].add(e)}}else for(this.computeFaceNormals(),a=0,d=this.faces.length;a<d;a++)b=this.faces[a],c[b.a].add(b.normal),c[b.b].add(b.normal),c[b.c].add(b.normal);d=0;for(b=this.vertices.length;d<b;d++)c[d].normalize();a=0;for(d=this.faces.length;a<d;a++)b=this.faces[a],g=b.vertexNormals,3===g.length?(g[0].copy(c[b.a]),g[1].copy(c[b.b]),g[2].copy(c[b.c])):(g[0]=c[b.a].clone(),g[1]=
-c[b.b].clone(),g[2]=c[b.c].clone());0<this.faces.length&&(this.normalsNeedUpdate=!0)},computeFlatVertexNormals:function(){var a;this.computeFaceNormals();var b=0;for(a=this.faces.length;b<a;b++){var c=this.faces[b];var d=c.vertexNormals;3===d.length?(d[0].copy(c.normal),d[1].copy(c.normal),d[2].copy(c.normal)):(d[0]=c.normal.clone(),d[1]=c.normal.clone(),d[2]=c.normal.clone())}0<this.faces.length&&(this.normalsNeedUpdate=!0)},computeMorphNormals:function(){var a,b;var c=0;for(b=this.faces.length;c<
-b;c++){var d=this.faces[c];d.__originalFaceNormal?d.__originalFaceNormal.copy(d.normal):d.__originalFaceNormal=d.normal.clone();d.__originalVertexNormals||(d.__originalVertexNormals=[]);var e=0;for(a=d.vertexNormals.length;e<a;e++)d.__originalVertexNormals[e]?d.__originalVertexNormals[e].copy(d.vertexNormals[e]):d.__originalVertexNormals[e]=d.vertexNormals[e].clone()}var f=new F;f.faces=this.faces;e=0;for(a=this.morphTargets.length;e<a;e++){if(!this.morphNormals[e]){this.morphNormals[e]={};this.morphNormals[e].faceNormals=
-[];this.morphNormals[e].vertexNormals=[];d=this.morphNormals[e].faceNormals;var g=this.morphNormals[e].vertexNormals;c=0;for(b=this.faces.length;c<b;c++){var h=new n;var l={a:new n,b:new n,c:new n};d.push(h);g.push(l)}}g=this.morphNormals[e];f.vertices=this.morphTargets[e].vertices;f.computeFaceNormals();f.computeVertexNormals();c=0;for(b=this.faces.length;c<b;c++)d=this.faces[c],h=g.faceNormals[c],l=g.vertexNormals[c],h.copy(d.normal),l.a.copy(d.vertexNormals[0]),l.b.copy(d.vertexNormals[1]),l.c.copy(d.vertexNormals[2])}c=
-0;for(b=this.faces.length;c<b;c++)d=this.faces[c],d.normal=d.__originalFaceNormal,d.vertexNormals=d.__originalVertexNormals},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new ab);this.boundingBox.setFromPoints(this.vertices)},computeBoundingSphere:function(){null===this.boundingSphere&&(this.boundingSphere=new nb);this.boundingSphere.setFromPoints(this.vertices)},merge:function(a,b,c){if(a&&a.isGeometry){var d,e=this.vertices.length,f=this.vertices,g=a.vertices,h=this.faces,
-l=a.faces,k=this.colors,n=a.colors;void 0===c&&(c=0);void 0!==b&&(d=(new da).getNormalMatrix(b));for(var u=0,t=g.length;u<t;u++){var r=g[u].clone();void 0!==b&&r.applyMatrix4(b);f.push(r)}u=0;for(t=n.length;u<t;u++)k.push(n[u].clone());u=0;for(t=l.length;u<t;u++){g=l[u];var p=g.vertexNormals;n=g.vertexColors;k=new zc(g.a+e,g.b+e,g.c+e);k.normal.copy(g.normal);void 0!==d&&k.normal.applyMatrix3(d).normalize();b=0;for(f=p.length;b<f;b++)r=p[b].clone(),void 0!==d&&r.applyMatrix3(d).normalize(),k.vertexNormals.push(r);
-k.color.copy(g.color);b=0;for(f=n.length;b<f;b++)r=n[b],k.vertexColors.push(r.clone());k.materialIndex=g.materialIndex+c;h.push(k)}u=0;for(t=a.faceVertexUvs.length;u<t;u++)for(c=a.faceVertexUvs[u],void 0===this.faceVertexUvs[u]&&(this.faceVertexUvs[u]=[]),b=0,f=c.length;b<f;b++){d=c[b];e=[];h=0;for(l=d.length;h<l;h++)e.push(d[h].clone());this.faceVertexUvs[u].push(e)}}else console.error("THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.",a)},mergeMesh:function(a){a&&a.isMesh?(a.matrixAutoUpdate&&
-a.updateMatrix(),this.merge(a.geometry,a.matrix)):console.error("THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.",a)},mergeVertices:function(){var a={},b=[],c=[],d=Math.pow(10,4),e;var f=0;for(e=this.vertices.length;f<e;f++){var g=this.vertices[f];g=Math.round(g.x*d)+"_"+Math.round(g.y*d)+"_"+Math.round(g.z*d);void 0===a[g]?(a[g]=f,b.push(this.vertices[f]),c[f]=b.length-1):c[f]=c[a[g]]}a=[];f=0;for(e=this.faces.length;f<e;f++)for(d=this.faces[f],d.a=c[d.a],d.b=c[d.b],d.c=c[d.c],d=
-[d.a,d.b,d.c],g=0;3>g;g++)if(d[g]===d[(g+1)%3]){a.push(f);break}for(f=a.length-1;0<=f;f--)for(d=a[f],this.faces.splice(d,1),c=0,e=this.faceVertexUvs.length;c<e;c++)this.faceVertexUvs[c].splice(d,1);f=this.vertices.length-b.length;this.vertices=b;return f},setFromPoints:function(a){this.vertices=[];for(var b=0,c=a.length;b<c;b++){var d=a[b];this.vertices.push(new n(d.x,d.y,d.z||0))}return this},sortFacesByMaterialIndex:function(){for(var a=this.faces,b=a.length,c=0;c<b;c++)a[c]._id=c;a.sort(function(a,
-b){return a.materialIndex-b.materialIndex});var d=this.faceVertexUvs[0],e=this.faceVertexUvs[1],f,g;d&&d.length===b&&(f=[]);e&&e.length===b&&(g=[]);for(c=0;c<b;c++){var h=a[c]._id;f&&f.push(d[h]);g&&g.push(e[h])}f&&(this.faceVertexUvs[0]=f);g&&(this.faceVertexUvs[1]=g)},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!==k[b])return k[b];k[b]=l.length/3;l.push(a.x,a.y,a.z);return k[b]}function c(a){var b=a.r.toString()+
-a.g.toString()+a.b.toString();if(void 0!==u[b])return u[b];u[b]=n.length;n.push(a.getHex());return u[b]}function d(a){var b=a.x.toString()+a.y.toString();if(void 0!==r[b])return r[b];r[b]=t.length/2;t.push(a.x,a.y);return r[b]}var e={metadata:{version:4.5,type:"Geometry",generator:"Geometry.toJSON"}};e.uuid=this.uuid;e.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)}h=[];var l=[],k={},n=[],u={},t=[],r={};for(g=0;g<this.faces.length;g++){var p=this.faces[g],v=void 0!==this.faceVertexUvs[0][g],z=0<p.normal.length(),y=0<p.vertexNormals.length,x=1!==p.color.r||1!==p.color.g||1!==p.color.b,w=0<p.vertexColors.length,A=0;A=a(A,0,0);A=a(A,1,!0);A=a(A,2,!1);A=a(A,3,v);A=a(A,4,z);A=a(A,5,y);A=a(A,6,x);A=a(A,7,w);h.push(A);h.push(p.a,p.b,p.c);h.push(p.materialIndex);v&&(v=this.faceVertexUvs[0][g],h.push(d(v[0]),d(v[1]),d(v[2])));z&&
-h.push(b(p.normal));y&&(z=p.vertexNormals,h.push(b(z[0]),b(z[1]),b(z[2])));x&&h.push(c(p.color));w&&(p=p.vertexColors,h.push(c(p[0]),c(p[1]),c(p[2])))}e.data={};e.data.vertices=f;e.data.normals=l;0<n.length&&(e.data.colors=n);0<t.length&&(e.data.uvs=[t]);e.data.faces=h;return e},clone:function(){return(new F).copy(this)},copy:function(a){var b,c,d;this.vertices=[];this.colors=[];this.faces=[];this.faceVertexUvs=[[]];this.morphTargets=[];this.morphNormals=[];this.skinWeights=[];this.skinIndices=[];
-this.lineDistances=[];this.boundingSphere=this.boundingBox=null;this.name=a.name;var e=a.vertices;var f=0;for(b=e.length;f<b;f++)this.vertices.push(e[f].clone());e=a.colors;f=0;for(b=e.length;f<b;f++)this.colors.push(e[f].clone());e=a.faces;f=0;for(b=e.length;f<b;f++)this.faces.push(e[f].clone());f=0;for(b=a.faceVertexUvs.length;f<b;f++){var g=a.faceVertexUvs[f];void 0===this.faceVertexUvs[f]&&(this.faceVertexUvs[f]=[]);e=0;for(c=g.length;e<c;e++){var h=g[e],l=[];var k=0;for(d=h.length;k<d;k++)l.push(h[k].clone());
-this.faceVertexUvs[f].push(l)}}k=a.morphTargets;f=0;for(b=k.length;f<b;f++){d={};d.name=k[f].name;if(void 0!==k[f].vertices)for(d.vertices=[],e=0,c=k[f].vertices.length;e<c;e++)d.vertices.push(k[f].vertices[e].clone());if(void 0!==k[f].normals)for(d.normals=[],e=0,c=k[f].normals.length;e<c;e++)d.normals.push(k[f].normals[e].clone());this.morphTargets.push(d)}k=a.morphNormals;f=0;for(b=k.length;f<b;f++){d={};if(void 0!==k[f].vertexNormals)for(d.vertexNormals=[],e=0,c=k[f].vertexNormals.length;e<c;e++)g=
-k[f].vertexNormals[e],h={},h.a=g.a.clone(),h.b=g.b.clone(),h.c=g.c.clone(),d.vertexNormals.push(h);if(void 0!==k[f].faceNormals)for(d.faceNormals=[],e=0,c=k[f].faceNormals.length;e<c;e++)d.faceNormals.push(k[f].faceNormals[e].clone());this.morphNormals.push(d)}e=a.skinWeights;f=0;for(b=e.length;f<b;f++)this.skinWeights.push(e[f].clone());e=a.skinIndices;f=0;for(b=e.length;f<b;f++)this.skinIndices.push(e[f].clone());e=a.lineDistances;f=0;for(b=e.length;f<b;f++)this.lineDistances.push(e[f]);f=a.boundingBox;
-null!==f&&(this.boundingBox=f.clone());f=a.boundingSphere;null!==f&&(this.boundingSphere=f.clone());this.elementsNeedUpdate=a.elementsNeedUpdate;this.verticesNeedUpdate=a.verticesNeedUpdate;this.uvsNeedUpdate=a.uvsNeedUpdate;this.normalsNeedUpdate=a.normalsNeedUpdate;this.colorsNeedUpdate=a.colorsNeedUpdate;this.lineDistancesNeedUpdate=a.lineDistancesNeedUpdate;this.groupsNeedUpdate=a.groupsNeedUpdate;return this},dispose:function(){this.dispatchEvent({type:"dispose"})}});var Xg=function(a){function b(b,
-d,e,f,g,h){a.call(this);this.type="BoxGeometry";this.parameters={width:b,height:d,depth:e,widthSegments:f,heightSegments:g,depthSegments:h};this.fromBufferGeometry(new Gd(b,d,e,f,g,h));this.mergeVertices()}a&&(b.__proto__=a);b.prototype=Object.create(a&&a.prototype);return b.prototype.constructor=b}(F),Gd=function(a){function b(b,d,e,f,g,h){function c(a,b,c,d,e,f,g,h,l,m,w){var z=f/l,y=g/m,x=f/2,A=g/2,C=h/2;g=l+1;var B=m+1,E=f=0,D,F,G=new n;for(F=0;F<B;F++){var H=F*y-A;for(D=0;D<g;D++)G[a]=(D*z-x)*
-d,G[b]=H*e,G[c]=C,u.push(G.x,G.y,G.z),G[a]=0,G[b]=0,G[c]=0<h?1:-1,t.push(G.x,G.y,G.z),r.push(D/l),r.push(1-F/m),f+=1}for(F=0;F<m;F++)for(D=0;D<l;D++)a=p+D+g*(F+1),b=p+(D+1)+g*(F+1),c=p+(D+1)+g*F,q.push(p+D+g*F,a,c),q.push(a,b,c),E+=6;k.addGroup(v,E,w);v+=E;p+=f}a.call(this);this.type="BoxBufferGeometry";this.parameters={width:b,height:d,depth:e,widthSegments:f,heightSegments:g,depthSegments:h};var k=this;b=b||1;d=d||1;e=e||1;f=Math.floor(f)||1;g=Math.floor(g)||1;h=Math.floor(h)||1;var q=[],u=[],t=
-[],r=[],p=0,v=0;c("z","y","x",-1,-1,e,d,b,h,g,0);c("z","y","x",1,-1,e,d,-b,h,g,1);c("x","z","y",1,1,b,e,d,f,h,2);c("x","z","y",1,-1,b,e,-d,f,h,3);c("x","y","z",1,-1,b,d,e,f,g,4);c("x","y","z",-1,-1,b,d,-e,f,g,5);this.setIndex(q);this.addAttribute("position",new A(u,3));this.addAttribute("normal",new A(t,3));this.addAttribute("uv",new A(r,2))}a&&(b.__proto__=a);b.prototype=Object.create(a&&a.prototype);return b.prototype.constructor=b}(E),xk={clone:Yb,merge:Ea};la.prototype=Object.create(O.prototype);
-la.prototype.constructor=la;la.prototype.isShaderMaterial=!0;la.prototype.copy=function(a){O.prototype.copy.call(this,a);this.fragmentShader=a.fragmentShader;this.vertexShader=a.vertexShader;this.uniforms=Yb(a.uniforms);this.defines=Object.assign({},a.defines);this.wireframe=a.wireframe;this.wireframeLinewidth=a.wireframeLinewidth;this.lights=a.lights;this.clipping=a.clipping;this.skinning=a.skinning;this.morphTargets=a.morphTargets;this.morphNormals=a.morphNormals;this.extensions=a.extensions;return this};
-la.prototype.toJSON=function(a){var b=O.prototype.toJSON.call(this,a);b.uniforms={};for(var c in this.uniforms){var d=this.uniforms[c].value;b.uniforms[c]=d&&d.isTexture?{type:"t",value:d.toJSON(a).uuid}:d&&d.isColor?{type:"c",value:d.getHex()}:d&&d.isVector2?{type:"v2",value:d.toArray()}:d&&d.isVector3?{type:"v3",value:d.toArray()}:d&&d.isVector4?{type:"v4",value:d.toArray()}:d&&d.isMatrix3?{type:"m3",value:d.toArray()}:d&&d.isMatrix4?{type:"m4",value:d.toArray()}:{value:d}}0<Object.keys(this.defines).length&&
-(b.defines=this.defines);b.vertexShader=this.vertexShader;b.fragmentShader=this.fragmentShader;a={};for(var e in this.extensions)!0===this.extensions[e]&&(a[e]=!0);0<Object.keys(a).length&&(b.extensions=a);return b};bb.prototype=Object.assign(Object.create(B.prototype),{constructor:bb,isCamera:!0,copy:function(a,b){B.prototype.copy.call(this,a,b);this.matrixWorldInverse.copy(a.matrixWorldInverse);this.projectionMatrix.copy(a.projectionMatrix);this.projectionMatrixInverse.copy(a.projectionMatrixInverse);
+(new n).fromArray(g,3*b),(new n).fromArray(g,3*d)];e=new zc(a,b,d,k,f,e);c.faces.push(e);void 0!==l&&c.faceVertexUvs[0].push([(new w).fromArray(l,2*a),(new w).fromArray(l,2*b),(new w).fromArray(l,2*d)]);void 0!==m&&c.faceVertexUvs[1].push([(new w).fromArray(m,2*a),(new w).fromArray(m,2*b),(new w).fromArray(m,2*d)])}var c=this,d=null!==a.index?a.index.array:void 0,e=a.attributes;if(void 0===e.position)return console.error("THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion."),
+this;var f=e.position.array,g=void 0!==e.normal?e.normal.array:void 0,h=void 0!==e.color?e.color.array:void 0,l=void 0!==e.uv?e.uv.array:void 0,m=void 0!==e.uv2?e.uv2.array:void 0;void 0!==m&&(this.faceVertexUvs[1]=[]);for(e=0;e<f.length;e+=3)c.vertices.push((new n).fromArray(f,e)),void 0!==h&&c.colors.push((new H).fromArray(h,e));var k=a.groups;if(0<k.length)for(e=0;e<k.length;e++){f=k[e];var u=f.start,t=u;for(u+=f.count;t<u;t+=3)void 0!==d?b(d[t],d[t+1],d[t+2],f.materialIndex):b(t,t+1,t+2,f.materialIndex)}else if(void 0!==
+d)for(e=0;e<d.length;e+=3)b(d[e],d[e+1],d[e+2]);else for(e=0;e<f.length/3;e+=3)b(e,e+1,e+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();this.boundingBox.getCenter(yf).negate();this.translate(yf.x,yf.y,yf.z);return this},normalize:function(){this.computeBoundingSphere();var a=this.boundingSphere.center,b=this.boundingSphere.radius;
+b=0===b?1:1/b;var c=new V;c.set(b,0,0,-b*a.x,0,b,0,-b*a.y,0,0,b,-b*a.z,0,0,0,1);this.applyMatrix(c);return this},computeFaceNormals:function(){for(var a=new n,b=new n,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){void 0===a&&(a=!0);var b;var c=Array(this.vertices.length);var d=0;for(b=this.vertices.length;d<b;d++)c[d]=new n;
+if(a){var e=new n,f=new n;a=0;for(d=this.faces.length;a<d;a++){b=this.faces[a];var g=this.vertices[b.a];var h=this.vertices[b.b];var l=this.vertices[b.c];e.subVectors(l,h);f.subVectors(g,h);e.cross(f);c[b.a].add(e);c[b.b].add(e);c[b.c].add(e)}}else for(this.computeFaceNormals(),a=0,d=this.faces.length;a<d;a++)b=this.faces[a],c[b.a].add(b.normal),c[b.b].add(b.normal),c[b.c].add(b.normal);d=0;for(b=this.vertices.length;d<b;d++)c[d].normalize();a=0;for(d=this.faces.length;a<d;a++)b=this.faces[a],g=b.vertexNormals,
+3===g.length?(g[0].copy(c[b.a]),g[1].copy(c[b.b]),g[2].copy(c[b.c])):(g[0]=c[b.a].clone(),g[1]=c[b.b].clone(),g[2]=c[b.c].clone());0<this.faces.length&&(this.normalsNeedUpdate=!0)},computeFlatVertexNormals:function(){var a;this.computeFaceNormals();var b=0;for(a=this.faces.length;b<a;b++){var c=this.faces[b];var d=c.vertexNormals;3===d.length?(d[0].copy(c.normal),d[1].copy(c.normal),d[2].copy(c.normal)):(d[0]=c.normal.clone(),d[1]=c.normal.clone(),d[2]=c.normal.clone())}0<this.faces.length&&(this.normalsNeedUpdate=
+!0)},computeMorphNormals:function(){var a,b;var c=0;for(b=this.faces.length;c<b;c++){var d=this.faces[c];d.__originalFaceNormal?d.__originalFaceNormal.copy(d.normal):d.__originalFaceNormal=d.normal.clone();d.__originalVertexNormals||(d.__originalVertexNormals=[]);var e=0;for(a=d.vertexNormals.length;e<a;e++)d.__originalVertexNormals[e]?d.__originalVertexNormals[e].copy(d.vertexNormals[e]):d.__originalVertexNormals[e]=d.vertexNormals[e].clone()}var f=new F;f.faces=this.faces;e=0;for(a=this.morphTargets.length;e<
+a;e++){if(!this.morphNormals[e]){this.morphNormals[e]={};this.morphNormals[e].faceNormals=[];this.morphNormals[e].vertexNormals=[];d=this.morphNormals[e].faceNormals;var g=this.morphNormals[e].vertexNormals;c=0;for(b=this.faces.length;c<b;c++){var h=new n;var l={a:new n,b:new n,c:new n};d.push(h);g.push(l)}}g=this.morphNormals[e];f.vertices=this.morphTargets[e].vertices;f.computeFaceNormals();f.computeVertexNormals();c=0;for(b=this.faces.length;c<b;c++)d=this.faces[c],h=g.faceNormals[c],l=g.vertexNormals[c],
+h.copy(d.normal),l.a.copy(d.vertexNormals[0]),l.b.copy(d.vertexNormals[1]),l.c.copy(d.vertexNormals[2])}c=0;for(b=this.faces.length;c<b;c++)d=this.faces[c],d.normal=d.__originalFaceNormal,d.vertexNormals=d.__originalVertexNormals},computeBoundingBox:function(){null===this.boundingBox&&(this.boundingBox=new ab);this.boundingBox.setFromPoints(this.vertices)},computeBoundingSphere:function(){null===this.boundingSphere&&(this.boundingSphere=new nb);this.boundingSphere.setFromPoints(this.vertices)},merge:function(a,
+b,c){if(a&&a.isGeometry){var d,e=this.vertices.length,f=this.vertices,g=a.vertices,h=this.faces,l=a.faces,k=this.colors,n=a.colors;void 0===c&&(c=0);void 0!==b&&(d=(new da).getNormalMatrix(b));for(var u=0,t=g.length;u<t;u++){var r=g[u].clone();void 0!==b&&r.applyMatrix4(b);f.push(r)}u=0;for(t=n.length;u<t;u++)k.push(n[u].clone());u=0;for(t=l.length;u<t;u++){g=l[u];var p=g.vertexNormals;n=g.vertexColors;k=new zc(g.a+e,g.b+e,g.c+e);k.normal.copy(g.normal);void 0!==d&&k.normal.applyMatrix3(d).normalize();
+b=0;for(f=p.length;b<f;b++)r=p[b].clone(),void 0!==d&&r.applyMatrix3(d).normalize(),k.vertexNormals.push(r);k.color.copy(g.color);b=0;for(f=n.length;b<f;b++)r=n[b],k.vertexColors.push(r.clone());k.materialIndex=g.materialIndex+c;h.push(k)}u=0;for(t=a.faceVertexUvs.length;u<t;u++)for(c=a.faceVertexUvs[u],void 0===this.faceVertexUvs[u]&&(this.faceVertexUvs[u]=[]),b=0,f=c.length;b<f;b++){d=c[b];e=[];h=0;for(l=d.length;h<l;h++)e.push(d[h].clone());this.faceVertexUvs[u].push(e)}}else console.error("THREE.Geometry.merge(): geometry not an instance of THREE.Geometry.",
+a)},mergeMesh:function(a){a&&a.isMesh?(a.matrixAutoUpdate&&a.updateMatrix(),this.merge(a.geometry,a.matrix)):console.error("THREE.Geometry.mergeMesh(): mesh not an instance of THREE.Mesh.",a)},mergeVertices:function(){var a={},b=[],c=[],d=Math.pow(10,4),e;var f=0;for(e=this.vertices.length;f<e;f++){var g=this.vertices[f];g=Math.round(g.x*d)+"_"+Math.round(g.y*d)+"_"+Math.round(g.z*d);void 0===a[g]?(a[g]=f,b.push(this.vertices[f]),c[f]=b.length-1):c[f]=c[a[g]]}a=[];f=0;for(e=this.faces.length;f<e;f++)for(d=
+this.faces[f],d.a=c[d.a],d.b=c[d.b],d.c=c[d.c],d=[d.a,d.b,d.c],g=0;3>g;g++)if(d[g]===d[(g+1)%3]){a.push(f);break}for(f=a.length-1;0<=f;f--)for(d=a[f],this.faces.splice(d,1),c=0,e=this.faceVertexUvs.length;c<e;c++)this.faceVertexUvs[c].splice(d,1);f=this.vertices.length-b.length;this.vertices=b;return f},setFromPoints:function(a){this.vertices=[];for(var b=0,c=a.length;b<c;b++){var d=a[b];this.vertices.push(new n(d.x,d.y,d.z||0))}return this},sortFacesByMaterialIndex:function(){for(var a=this.faces,
+b=a.length,c=0;c<b;c++)a[c]._id=c;a.sort(function(a,b){return a.materialIndex-b.materialIndex});var d=this.faceVertexUvs[0],e=this.faceVertexUvs[1],f,g;d&&d.length===b&&(f=[]);e&&e.length===b&&(g=[]);for(c=0;c<b;c++){var h=a[c]._id;f&&f.push(d[h]);g&&g.push(e[h])}f&&(this.faceVertexUvs[0]=f);g&&(this.faceVertexUvs[1]=g)},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!==k[b])return k[b];k[b]=l.length/3;l.push(a.x,
+a.y,a.z);return k[b]}function c(a){var b=a.r.toString()+a.g.toString()+a.b.toString();if(void 0!==u[b])return u[b];u[b]=n.length;n.push(a.getHex());return u[b]}function d(a){var b=a.x.toString()+a.y.toString();if(void 0!==r[b])return r[b];r[b]=t.length/2;t.push(a.x,a.y);return r[b]}var e={metadata:{version:4.5,type:"Geometry",generator:"Geometry.toJSON"}};e.uuid=this.uuid;e.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)}h=[];var l=[],k={},n=[],u={},t=[],r={};for(g=0;g<this.faces.length;g++){var p=this.faces[g],v=void 0!==this.faceVertexUvs[0][g],z=0<p.normal.length(),y=0<p.vertexNormals.length,x=1!==p.color.r||1!==p.color.g||1!==p.color.b,w=0<p.vertexColors.length,A=0;A=a(A,0,0);A=a(A,1,!0);A=a(A,2,!1);A=a(A,3,v);A=a(A,4,z);A=a(A,5,y);A=a(A,6,x);A=a(A,7,w);h.push(A);h.push(p.a,p.b,p.c);h.push(p.materialIndex);
+v&&(v=this.faceVertexUvs[0][g],h.push(d(v[0]),d(v[1]),d(v[2])));z&&h.push(b(p.normal));y&&(z=p.vertexNormals,h.push(b(z[0]),b(z[1]),b(z[2])));x&&h.push(c(p.color));w&&(p=p.vertexColors,h.push(c(p[0]),c(p[1]),c(p[2])))}e.data={};e.data.vertices=f;e.data.normals=l;0<n.length&&(e.data.colors=n);0<t.length&&(e.data.uvs=[t]);e.data.faces=h;return e},clone:function(){return(new F).copy(this)},copy:function(a){var b,c,d;this.vertices=[];this.colors=[];this.faces=[];this.faceVertexUvs=[[]];this.morphTargets=
+[];this.morphNormals=[];this.skinWeights=[];this.skinIndices=[];this.lineDistances=[];this.boundingSphere=this.boundingBox=null;this.name=a.name;var e=a.vertices;var f=0;for(b=e.length;f<b;f++)this.vertices.push(e[f].clone());e=a.colors;f=0;for(b=e.length;f<b;f++)this.colors.push(e[f].clone());e=a.faces;f=0;for(b=e.length;f<b;f++)this.faces.push(e[f].clone());f=0;for(b=a.faceVertexUvs.length;f<b;f++){var g=a.faceVertexUvs[f];void 0===this.faceVertexUvs[f]&&(this.faceVertexUvs[f]=[]);e=0;for(c=g.length;e<
+c;e++){var h=g[e],l=[];var k=0;for(d=h.length;k<d;k++)l.push(h[k].clone());this.faceVertexUvs[f].push(l)}}k=a.morphTargets;f=0;for(b=k.length;f<b;f++){d={};d.name=k[f].name;if(void 0!==k[f].vertices)for(d.vertices=[],e=0,c=k[f].vertices.length;e<c;e++)d.vertices.push(k[f].vertices[e].clone());if(void 0!==k[f].normals)for(d.normals=[],e=0,c=k[f].normals.length;e<c;e++)d.normals.push(k[f].normals[e].clone());this.morphTargets.push(d)}k=a.morphNormals;f=0;for(b=k.length;f<b;f++){d={};if(void 0!==k[f].vertexNormals)for(d.vertexNormals=
+[],e=0,c=k[f].vertexNormals.length;e<c;e++)g=k[f].vertexNormals[e],h={},h.a=g.a.clone(),h.b=g.b.clone(),h.c=g.c.clone(),d.vertexNormals.push(h);if(void 0!==k[f].faceNormals)for(d.faceNormals=[],e=0,c=k[f].faceNormals.length;e<c;e++)d.faceNormals.push(k[f].faceNormals[e].clone());this.morphNormals.push(d)}e=a.skinWeights;f=0;for(b=e.length;f<b;f++)this.skinWeights.push(e[f].clone());e=a.skinIndices;f=0;for(b=e.length;f<b;f++)this.skinIndices.push(e[f].clone());e=a.lineDistances;f=0;for(b=e.length;f<
+b;f++)this.lineDistances.push(e[f]);f=a.boundingBox;null!==f&&(this.boundingBox=f.clone());f=a.boundingSphere;null!==f&&(this.boundingSphere=f.clone());this.elementsNeedUpdate=a.elementsNeedUpdate;this.verticesNeedUpdate=a.verticesNeedUpdate;this.uvsNeedUpdate=a.uvsNeedUpdate;this.normalsNeedUpdate=a.normalsNeedUpdate;this.colorsNeedUpdate=a.colorsNeedUpdate;this.lineDistancesNeedUpdate=a.lineDistancesNeedUpdate;this.groupsNeedUpdate=a.groupsNeedUpdate;return this},dispose:function(){this.dispatchEvent({type:"dispose"})}});
+var Xg=function(a){function b(b,d,e,f,g,h){a.call(this);this.type="BoxGeometry";this.parameters={width:b,height:d,depth:e,widthSegments:f,heightSegments:g,depthSegments:h};this.fromBufferGeometry(new Gd(b,d,e,f,g,h));this.mergeVertices()}a&&(b.__proto__=a);b.prototype=Object.create(a&&a.prototype);return b.prototype.constructor=b}(F),Gd=function(a){function b(b,d,e,f,g,h){function c(a,b,c,d,e,f,g,h,l,m,w){var z=f/l,y=g/m,x=f/2,A=g/2,C=h/2;g=l+1;var B=m+1,E=f=0,D,F,G=new n;for(F=0;F<B;F++){var H=F*
+y-A;for(D=0;D<g;D++)G[a]=(D*z-x)*d,G[b]=H*e,G[c]=C,u.push(G.x,G.y,G.z),G[a]=0,G[b]=0,G[c]=0<h?1:-1,t.push(G.x,G.y,G.z),r.push(D/l),r.push(1-F/m),f+=1}for(F=0;F<m;F++)for(D=0;D<l;D++)a=p+D+g*(F+1),b=p+(D+1)+g*(F+1),c=p+(D+1)+g*F,q.push(p+D+g*F,a,c),q.push(a,b,c),E+=6;k.addGroup(v,E,w);v+=E;p+=f}a.call(this);this.type="BoxBufferGeometry";this.parameters={width:b,height:d,depth:e,widthSegments:f,heightSegments:g,depthSegments:h};var k=this;b=b||1;d=d||1;e=e||1;f=Math.floor(f)||1;g=Math.floor(g)||1;h=
+Math.floor(h)||1;var q=[],u=[],t=[],r=[],p=0,v=0;c("z","y","x",-1,-1,e,d,b,h,g,0);c("z","y","x",1,-1,e,d,-b,h,g,1);c("x","z","y",1,1,b,e,d,f,h,2);c("x","z","y",1,-1,b,e,-d,f,h,3);c("x","y","z",1,-1,b,d,e,f,g,4);c("x","y","z",-1,-1,b,d,-e,f,g,5);this.setIndex(q);this.addAttribute("position",new A(u,3));this.addAttribute("normal",new A(t,3));this.addAttribute("uv",new A(r,2))}a&&(b.__proto__=a);b.prototype=Object.create(a&&a.prototype);return b.prototype.constructor=b}(E),xk={clone:Yb,merge:Ea};la.prototype=
+Object.create(O.prototype);la.prototype.constructor=la;la.prototype.isShaderMaterial=!0;la.prototype.copy=function(a){O.prototype.copy.call(this,a);this.fragmentShader=a.fragmentShader;this.vertexShader=a.vertexShader;this.uniforms=Yb(a.uniforms);this.defines=Object.assign({},a.defines);this.wireframe=a.wireframe;this.wireframeLinewidth=a.wireframeLinewidth;this.lights=a.lights;this.clipping=a.clipping;this.skinning=a.skinning;this.morphTargets=a.morphTargets;this.morphNormals=a.morphNormals;this.extensions=
+a.extensions;return this};la.prototype.toJSON=function(a){var b=O.prototype.toJSON.call(this,a);b.uniforms={};for(var c in this.uniforms){var d=this.uniforms[c].value;b.uniforms[c]=d&&d.isTexture?{type:"t",value:d.toJSON(a).uuid}:d&&d.isColor?{type:"c",value:d.getHex()}:d&&d.isVector2?{type:"v2",value:d.toArray()}:d&&d.isVector3?{type:"v3",value:d.toArray()}:d&&d.isVector4?{type:"v4",value:d.toArray()}:d&&d.isMatrix3?{type:"m3",value:d.toArray()}:d&&d.isMatrix4?{type:"m4",value:d.toArray()}:{value:d}}0<
+Object.keys(this.defines).length&&(b.defines=this.defines);b.vertexShader=this.vertexShader;b.fragmentShader=this.fragmentShader;a={};for(var e in this.extensions)!0===this.extensions[e]&&(a[e]=!0);0<Object.keys(a).length&&(b.extensions=a);return b};bb.prototype=Object.assign(Object.create(B.prototype),{constructor:bb,isCamera:!0,copy:function(a,b){B.prototype.copy.call(this,a,b);this.matrixWorldInverse.copy(a.matrixWorldInverse);this.projectionMatrix.copy(a.projectionMatrix);this.projectionMatrixInverse.copy(a.projectionMatrixInverse);
 return this},getWorldDirection:function(a){void 0===a&&(console.warn("THREE.Camera: .getWorldDirection() target is now required"),a=new n);this.updateMatrixWorld(!0);var b=this.matrixWorld.elements;return a.set(-b[8],-b[9],-b[10]).normalize()},updateMatrixWorld:function(a){B.prototype.updateMatrixWorld.call(this,a);this.matrixWorldInverse.getInverse(this.matrixWorld)},clone:function(){return(new this.constructor).copy(this)}});ja.prototype=Object.assign(Object.create(bb.prototype),{constructor:ja,
 isPerspectiveCamera:!0,copy:function(a,b){bb.prototype.copy.call(this,a,b);this.fov=a.fov;this.zoom=a.zoom;this.near=a.near;this.far=a.far;this.focus=a.focus;this.aspect=a.aspect;this.view=null===a.view?null:Object.assign({},a.view);this.filmGauge=a.filmGauge;this.filmOffset=a.filmOffset;return this},setFocalLength:function(a){a=.5*this.getFilmHeight()/a;this.fov=2*L.RAD2DEG*Math.atan(a);this.updateProjectionMatrix()},getFocalLength:function(){var a=Math.tan(.5*L.DEG2RAD*this.fov);return.5*this.getFilmHeight()/
 a},getEffectiveFOV:function(){return 2*L.RAD2DEG*Math.atan(Math.tan(.5*L.DEG2RAD*this.fov)/this.zoom)},getFilmWidth:function(){return this.filmGauge*Math.min(this.aspect,1)},getFilmHeight:function(){return this.filmGauge/Math.max(this.aspect,1)},setViewOffset:function(a,b,c,d,e,f){this.aspect=a/b;null===this.view&&(this.view={enabled:!0,fullWidth:1,fullHeight:1,offsetX:0,offsetY:0,width:1,height:1});this.view.enabled=!0;this.view.fullWidth=a;this.view.fullHeight=b;this.view.offsetX=c;this.view.offsetY=

build/three.module.js

@@ -11368,6 +11368,13 @@ Geometry.prototype = Object.assign( Object.create( EventDispatcher.prototype ),
 		var indices = geometry.index !== null ? geometry.index.array : undefined;
 		var attributes = geometry.attributes;
 
+		if ( attributes.position === undefined ) {
+
+			console.error( 'THREE.Geometry.fromBufferGeometry(): Position attribute required for conversion.' );
+			return this;
+
+		}
+
 		var positions = attributes.position.array;
 		var normals = attributes.normal !== undefined ? attributes.normal.array : undefined;
 		var colors = attributes.color !== undefined ? attributes.color.array : undefined;