Updated builds.

build/three.js

@@ -799,6 +799,11 @@
 			return this;
 		}
 
+		*[Symbol.iterator]() {
+			yield this.x;
+			yield this.y;
+		}
+
 	}
 
 	Vector2.prototype.isVector2 = true;
@@ -1878,6 +1883,13 @@
 			return this;
 		}
 
+		*[Symbol.iterator]() {
+			yield this.x;
+			yield this.y;
+			yield this.z;
+			yield this.w;
+		}
+
 	}
 
 	Vector4.prototype.isVector4 = true;
@@ -3096,6 +3108,12 @@
 			return this;
 		}
 
+		*[Symbol.iterator]() {
+			yield this.x;
+			yield this.y;
+			yield this.z;
+		}
+
 	}
 
 	Vector3.prototype.isVector3 = true;
@@ -8000,21 +8018,7 @@
 		}
 
 		clone() {
-			/*
-			 // Handle primitives
-				 const parameters = this.parameters;
-				 if ( parameters !== undefined ) {
-				 const values = [];
-				 for ( const key in parameters ) {
-				 values.push( parameters[ key ] );
-				 }
-				 const geometry = Object.create( this.constructor.prototype );
-			 this.constructor.apply( geometry, values );
-			 return geometry;
-				 }
-				 return new this.constructor().copy( this );
-			 */
-			return new BufferGeometry().copy(this);
+			return new this.constructor().copy(this);
 		}
 
 		copy(source) {
@@ -8085,7 +8089,9 @@
 			this.drawRange.start = source.drawRange.start;
 			this.drawRange.count = source.drawRange.count; // user data
 
-			this.userData = source.userData;
+			this.userData = source.userData; // geometry generator parameters
+
+			if (source.parameters !== undefined) this.parameters = Object.assign({}, source.parameters);
 			return this;
 		}
 
@@ -19672,7 +19678,7 @@
 			const encoding = _currentRenderTarget === null ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
 			const envMap = (material.isMeshStandardMaterial ? cubeuvmaps : cubemaps).get(material.envMap || environment);
 			const vertexAlphas = material.vertexColors === true && !!object.geometry && !!object.geometry.attributes.color && object.geometry.attributes.color.itemSize === 4;
-			const vertexTangents = !!object.geometry && !!object.geometry.attributes.tangent;
+			const vertexTangents = !!material.normalMap && !!object.geometry && !!object.geometry.attributes.tangent;
 			const morphTargets = !!object.geometry && !!object.geometry.morphAttributes.position;
 			const morphNormals = !!object.geometry && !!object.geometry.morphAttributes.normal;
 			const morphTargetsCount = !!object.geometry && !!object.geometry.morphAttributes.position ? object.geometry.morphAttributes.position.length : 0;
@@ -22107,7 +22113,7 @@
 	}
 
 	class PolyhedronGeometry extends BufferGeometry {
-		constructor(vertices, indices, radius = 1, detail = 0) {
+		constructor(vertices = [], indices = [], radius = 1, detail = 0) {
 			super();
 			this.type = 'PolyhedronGeometry';
 			this.parameters = {

build/three.module.js

@@ -1029,6 +1029,13 @@ class Vector2 {
 
 	}
 
+	*[ Symbol.iterator ]() {
+
+		yield this.x;
+		yield this.y;
+
+	}
+
 }
 
 Vector2.prototype.isVector2 = true;
@@ -2477,6 +2484,15 @@ class Vector4 {
 
 	}
 
+	*[ Symbol.iterator ]() {
+
+		yield this.x;
+		yield this.y;
+		yield this.z;
+		yield this.w;
+
+	}
+
 }
 
 Vector4.prototype.isVector4 = true;
@@ -4096,6 +4112,14 @@ class Vector3 {
 
 	}
 
+	*[ Symbol.iterator ]() {
+
+		yield this.x;
+		yield this.y;
+		yield this.z;
+
+	}
+
 }
 
 Vector3.prototype.isVector3 = true;
@@ -10472,31 +10496,7 @@ class BufferGeometry extends EventDispatcher {
 
 	clone() {
 
-		/*
-		 // Handle primitives
-
-		 const parameters = this.parameters;
-
-		 if ( parameters !== undefined ) {
-
-		 const values = [];
-
-		 for ( const key in parameters ) {
-
-		 values.push( parameters[ key ] );
-
-		 }
-
-		 const geometry = Object.create( this.constructor.prototype );
-		 this.constructor.apply( geometry, values );
-		 return geometry;
-
-		 }
-
 		 return new this.constructor().copy( this );
-		 */
-
-		return new BufferGeometry().copy( this );
 
 	}
 
@@ -10601,6 +10601,10 @@ class BufferGeometry extends EventDispatcher {
 
 		this.userData = source.userData;
 
+		// geometry generator parameters
+
+		if ( source.parameters !== undefined ) this.parameters = Object.assign( {}, source.parameters );
+
 		return this;
 
 	}
@@ -26611,7 +26615,7 @@ function WebGLRenderer( parameters = {} ) {
 		const encoding = ( _currentRenderTarget === null ) ? _this.outputEncoding : _currentRenderTarget.texture.encoding;
 		const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
 		const vertexAlphas = material.vertexColors === true && !! object.geometry && !! object.geometry.attributes.color && object.geometry.attributes.color.itemSize === 4;
-		const vertexTangents = !! object.geometry && !! object.geometry.attributes.tangent;
+		const vertexTangents = !! material.normalMap && !! object.geometry && !! object.geometry.attributes.tangent;
 		const morphTargets = !! object.geometry && !! object.geometry.morphAttributes.position;
 		const morphNormals = !! object.geometry && !! object.geometry.morphAttributes.normal;
 		const morphTargetsCount = ( !! object.geometry && !! object.geometry.morphAttributes.position ) ? object.geometry.morphAttributes.position.length : 0;
@@ -30031,7 +30035,7 @@ class ConeGeometry extends CylinderGeometry {
 
 class PolyhedronGeometry extends BufferGeometry {
 
-	constructor( vertices, indices, radius = 1, detail = 0 ) {
+	constructor( vertices = [], indices = [], radius = 1, detail = 0 ) {
 
 		super();