Function handleMouseWheel

examples/js/controls/OrbitControls.js:498–514

( event )

	}

	function handleMouseWheel( event ) {

		// console.log( 'handleMouseWheel' );

		if ( event.deltaY < 0 ) {

			dollyOut( getZoomScale() );

		} else if ( event.deltaY > 0 ) {

			dollyIn( getZoomScale() );

		}

		scope.update();

	}

	function handleKeyDown( event ) {