var mc:MovieClip = MovieClip(this.parent);
trace(map(mc.mouseY, 0, stage.stageHeight, -100, 100));

Working great, thanks.

Have to figure out how to get the mouseY from the stage and not the child. So there’s a reason it »didn’t work«.

I can get it to work in a clean fla. But not in the project I’m working on.

Basically I’m moving a navigation based on the mouseY, and I’m using the script in attempt to add a bit of top- and bottom margin to the navigation. So I’m calling:

private function navigationHandler(event:Event):void
{
trace(mouseY, map(mouseY, 0, stage.stageHeight, -100, 100));
var _offstage = height / stage.stageHeight;
var _ypos = -((_offstage * stage.mouseY) – (stage.mouseY – (map(mouseY, 0, stage.stageHeight, -100, 100))));
TweenLite.to(this, .5, {y: _ypos});
}

private function map(v:Number, a1:Number, b1:Number, a2:Number = 0, b2:Number = 1):Number
{
return (v == a1) ? a2 : (v – a1) * (b2 – a2) / (b1 – a1) + a2;
}

But it simply return an odd value. And by the way it’s 500, not 550 as stated. But that seems not to be of any point; as it should return 100.

this.addEventListener(Event.ENTER_FRAME, mapMouse);

function mapMouse(e:Event):void{
trace(map(mouseY,0,stage.stageHeight,-100,100));
}

function map(v:Number, a:Number, b:Number, x:Number = 0, y:Number = 1):Number {
return (v == a) ? x : (v – a) * (y – x) / (b – a) + x;
}

Are you sure 550 is your stage height? It’s the default flash stage width which might be throwing you off?