function handleMouseDown(event) {
        mouseDown = true;
        lastMouseX = event.clientX;
        lastMouseY = event.clientY;
    }
/**
     * Handles the mouse down event. In this case, we cache the position of the mouse so it can be used in rotation calculations later.
     * @method handleMouseDown
     * @param  {event} event The mouse event.
     */
Handles the mouse down event. In this case, we cache the position of the mouse so it can be used in rotation calculations later.
Handles the mouse down event . In this case we cache the position of the mouse so it can be used in rotation calculations later .
function handleMouseDown(event) {
        mouseDown = true;
        lastMouseX = event.clientX;
        lastMouseY = event.clientY;
    }
function handleMouseDown ( event ) { mouseDown = true ; lastMouseX = event . clientX ; lastMouseY = event . clientY ; }
Handles the mouse down event.
Handles the mouse down event .