[name]
		
		This class stores data for an attribute associated with a [page:BufferGeometry]. See that page for details and a usage example. This class is used to store builtin attributes such as vertex position, normals, color, etc., but can also be used in your code to store custom attributes in a [page:BufferGeometry].
		
		Constructor
		[name]([page:Array array], [page:Integer itemSize])
		
		Instantiates this attribute with data from the associated buffer. The array can either be a regular Array or a Typed Array.
		itemSize gives the number of values of the array that should be associated with a particular vertex.
		
		Properties
		[property:Array array]
		
		Stores the data associated with this attribute; can be an Array or a Typed Array. This element should have itemSize * numVertices elements, where numVertices is the number of vertices in the associated [page:BufferGeometry geometry].
		
		[property:Integer itemSize]
		
		Records how many items of the array are associated with a particular vertex. For instance, if this
		attribute is storing a 3-component vector (such as a position, normal, or color), then itemSize should be 3.
		
		[property:Integer length]
		
		Gives the total number of elements in the array.
		
		[property:Boolean needsUpdate]
		
		Flag to indicate that this attribute has changed and should be re-send to the GPU. Set this to true when you modify the value of the array.
		
		[property:Integer version]
		
		A version number, incremented every time the needsUpdate property is set to true.
		
		Methods
		[method:null copyAt] ( [page:Integer index1], attribute, [page:Integer index2] ) 
		
		Copies itemSize values in the array from the vertex at index2 to the vertex at index1.
		
		[method:null set] ( [page:Array value] ) 
		
		Sets the associated array with values from the passed array.
		
		[method:null setX]( index, x ) 
		
		Sets the value of the array at index * itemSize to x
		
		[method:null setY]( index, y ) 
		
		Sets the value of the array at index * itemSize + 1 to y
		
		[method:null setZ]( index, z ) 
		
		Sets the value of the array at index * itemSize + 2 to z
		
		[method:null setXY]( index, x, y ) 
		
		Sets the value of the array at index * itemSize to x and
		sets the value of the array at index * itemSize + 1 to y
		
		[method:null setXYZ]( index, x, y, z ) 
		
		Sets the value of the array at index * itemSize to x,
		the value of the array at index * itemSize + 1 to y, and
		the value of the array at index * itemSize + 2 to z.
		
		[method:null setXYZW]( index, x, y, z, w ) 
		
		Sets the value of the array at index * itemSize to x,
		the value of the array at index * itemSize + 1 to y,
		the value of the array at index * itemSize + 2 to z, and
		the value of the array at index * itemSize + 3 to w.
		
		[method:BufferAttribute clone]() 
		
		Copies this attribute.
		
		Source
		[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]