function Cropping2d( config ) {

	// "Cropping2d" inherits from abstract layer "NativeLayer3d".

	NativeLayer3d.call( this, config );

	/**
	 * Dimension of the cropping along the width and the height.
	 *
	 * @type { Array }
	 */

	this.cropping = undefined;

	/**
	 * Actual cropping size to width and height.
	 *
	 * @type { int }
	 */

	this.croppingWidth = undefined;
	this.croppingHeight = undefined;

	this.layerType = "Cropping2d";

}
Actual cropping size to width and height.

@type { int }