[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 attibute 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.
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]