* A function that just returns its argument. */

* Represents an array of indices. Optionally, multiple instances of this class can share * the same data. Index arrays can be copied around without i

* Represents an array of vertices. Optionally, multiple instances of this class can share * the same data. Vertex arrays can be copied around without

* Manages ranges of primitives that consist of vertices stored in a vertex array. For * each primitive type, multiple ranges of vertices can be store

* Event to signal that a mouse drag was cancelled by the windowing system, e.g. when the * window lost focus. */

* Represents an opened (logical) file. A logical file can be backed by a physical file on * the disk, a memory buffer, or a portion thereof. */

* Manages ranges of primitives to be rendered using indices stored in an IndexArray * instance. To avoid costly material switching, the instances are

* Manages one or multiple connections of observer calllbacks to notifiers. * * All connections are disconnected when an instance of this class is de

* A set containing a subset of (X, Y, Z). Identifies which axes will be scaled. * Used for recording which axes the Shift key affects in 2D views. *

* Tag references are used to store the tags attached to an object implementing the * Taggable interface. */

* Implementing this interface gives a class the ability to be tagged. */