setViewOffset( fullWidth, fullHeight, x, y, width, height ) {

		if ( this.view === null ) {

			this.view = {
				enabled: true,
				fullWidth: 1,
				fullHeight: 1,
				offsetX: 0,
				offsetY: 0,
				width: 1,
				height: 1
			};

		}

		this.view.enabled = true;
		this.view.fullWidth = fullWidth;
		this.view.fullHeight = fullHeight;
		this.view.offsetX = x;
		this.view.offsetY = y;
		this.view.width = width;
		this.view.height = height;

		this.updateProjectionMatrix();

	}
Sets an offset in a larger frustum. This is useful for multi-window or
multi-monitor/multi-machine setups.

@param {number} fullWidth - The full width of multiview setup.
@param {number} fullHeight - The full height of multiview setup.
@param {number} x - The horizontal offset of the subcamera.
@param {number} y - The vertical offset of the subcamera.
@param {number} width - The width of subcamera.
@param {number} height - The height of subcamera.
@see {@link PerspectiveCamera#setViewOffset}