Merge pull request #10445 from Mugen87/dev

BufferGeometry: Fixed .copy()

src/core/BufferGeometry.js

@@ -999,6 +999,23 @@ BufferGeometry.prototype = {
 
 	copy: function ( source ) {
 
+		var name, i, l;
+
+		// reset
+
+		this.index = null;
+		this.attributes = {};
+		this.morphAttributes = {};
+		this.groups = [];
+		this.boundingBox = null;
+		this.boundingSphere = null;
+
+		// name
+
+		this.name = source.name;
+
+		// index
+
 		var index = source.index;
 
 		if ( index !== null ) {
@@ -1007,24 +1024,72 @@ BufferGeometry.prototype = {
 
 		}
 
+		// attributes
+
 		var attributes = source.attributes;
 
-		for ( var name in attributes ) {
+		for ( name in attributes ) {
 
 			var attribute = attributes[ name ];
 			this.addAttribute( name, attribute.clone() );
 
 		}
 
+		// morph attributes
+
+		var morphAttributes = source.morphAttributes;
+
+		for ( name in morphAttributes ) {
+
+			var array = [];
+			var morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes
+
+			for ( i = 0, l = morphAttribute.length; i < l; i ++ ) {
+
+				array.push( morphAttribute[ i ].clone() );
+
+			}
+
+			this.morphAttributes[ name ] = array;
+
+		}
+
+		// groups
+
 		var groups = source.groups;
 
-		for ( var i = 0, l = groups.length; i < l; i ++ ) {
+		for ( i = 0, l = groups.length; i < l; i ++ ) {
 
 			var group = groups[ i ];
 			this.addGroup( group.start, group.count, group.materialIndex );
 
 		}
 
+		// bounding box
+
+		var boundingBox = source.boundingBox;
+
+		if ( boundingBox !== null ) {
+
+			this.boundingBox = boundingBox.clone();
+
+		}
+
+		// bounding sphere
+
+		var boundingSphere = source.boundingSphere;
+
+		if ( boundingSphere !== null ) {
+
+			this.boundingSphere = boundingSphere.clone();
+
+		}
+
+		// draw range
+
+		this.drawRange.start = source.drawRange.start;
+		this.drawRange.count = source.drawRange.count;
+
 		return this;
 
 	},