Mouse click and drag through turntable animation

Hi all,

First - thanks for taking the time to look through and possibly helping me with this question.

I'm just getting to grips with flash cc actionscript 3.0 - so I apologise in advance to my not so technical jargon.

In the past I have used actionscript 1.0 to create an interactive html file that contains a turntable animation of a 3D model. Users can mouse click and drag to the left or right to 'spin' the model around - however what they are really doing is scrubing through the timeline which contained 360 images of it from 360 degrees. Similar ideas can be found here: Interactive Thyroidectomy

Now annoying I can't use the old code any more as I'm working in the latest flash cc actionscript 3.0

So how do I do the same thing but in actionscript 3.0?

So I've worked this bit out so far

On my main stage I have two layers - actions layer and another layer with my movie clip (movieclip_mc)

In the actions layer so far:

movieclip_mc.addEventListener(MouseEvent.MOUSE_DOWN, onMouseDown);
movieclip_mc.addEventListener(MouseEvent.MOUSE_UP, onMouseUp);


function onMouseDown(event:MouseEvent😞void
{
  movieclip_mc.addEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
  //I should put something in here about mouseX  - but no idea what
}

function onMouseUp(event:MouseEvent😞void
{
  movieclip_mc.removeEventListener(MouseEvent.MOUSE_MOVE, onMouseMove);
}

function onMouseMove(event:MouseEvent😞void
{  
//I have to put something in about total frames - width of movieclip_mc etc but I'm not sure how   

// this is what someone else did on another forum - but I'm not sure what it means:

     var delta:int = backgroundClip.mouseX - clickedMouseX;
   var wantedFrame:uint = (clickedFrame + delta * clip.totalFrames / backgroundClip.width) % clip.totalFrames;
   while (wantedFrame < 1)
   {  
  wantedFrame += clip.totalFrames;
   }
  clip.gotoAndStop(wantedFrame);
}

Also I think i need something in the beginning like.....:

import flash.events.MouseEvent;
import flash.display.MovieClip;
import flash.display.Sprite;

var clickedMouseX:int;
var clickedFrame:uint;
var backgroundClip:Sprite = getChildByName("background") as Sprite;
var clip:MovieClip = getChildByName("animation") as MovieClip;
clip.stop();
clip.mouseEnabled = false;

.....but I'm a bit confused about what all of it means

So I understand the principle but no idea how to actually make it work - Could anyone help explain it to me or help with the code?

Thanks so much to anyone who can offer some help

Catherine