reset() {

		this.target.copy( this.target0 );
		this.object.position.copy( this.position0 );
		this.object.zoom = this.zoom0;

		this.object.updateProjectionMatrix();
		this.dispatchEvent( _changeEvent );

		this.update();

		this.state = _STATE.NONE;

	}
Reset the controls to their state from either the last time the `saveState()`
was called, or the initial state.