reset() {

		this.state = _STATE.NONE;
		this.keyState = _STATE.NONE;

		this.target.copy( this._target0 );
		this.object.position.copy( this._position0 );
		this.object.up.copy( this._up0 );
		this.object.zoom = this._zoom0;

		this.object.updateProjectionMatrix();

		this._eye.subVectors( this.object.position, this.target );

		this.object.lookAt( this.target );

		this.dispatchEvent( _changeEvent );

		this._lastPosition.copy( this.object.position );
		this._lastZoom = this.object.zoom;

	}
Resets the controls to its initial state.