Hit Test and Snap to Target

programming flash
1

I would like for a movie clip to only snap to grind points that detected the hit test.

Here is my attempt…


var intXPos:Number = box.x
var intYPos:Number = box.y
myPoint.addEventListener(MouseEvent.MOUSE_DOWN, startEvent)
function startEvent(e:MouseEvent){
    //stage.addEventListener(Event.ENTER_FRAME, drawPath);
    stage.addEventListener(MouseEvent.MOUSE_MOVE, drawPath);
}
myPoint.addEventListener(MouseEvent.MOUSE_UP, stopEvent)

function stopEvent(e:MouseEvent){
    //stage.removeEventListener(Event.ENTER_FRAME, drawPath);
    stage.removeEventListener(MouseEvent.MOUSE_MOVE, drawPath);
    //removeChild(hitArray[k]);
}

function drawPath(e:Event):void{
    var len:uint = hitArray.length
    var blueRect:Rectangle = myPoint.getBounds(this);
    var blueOffset:Matrix = myPoint.transform.matrix;
    blueOffset.tx = myPoint.x - blueRect.x;
    blueOffset.ty = myPoint.y - blueRect.y;    
    var bLoc:Point = new Point(blueRect.x, blueRect.y);        
    var myPointBmpData = new BitmapData(blueRect.width, blueRect.height, true, 0);
    myPointBmpData.draw(myPoint, blueOffset);
  
    var ham:*   
    var rLoc:Point = new Point()
    for (var m:int=0; m<len; m++) {
        ham = hitArray[m]
        var redRect:Rectangle = ham.getBounds(this);
        var redClipBmpData = new BitmapData(redRect.width, redRect.height, true, 0);
        
        var redOffset:Matrix = ham.transform.matrix;
        redOffset.tx = ham.x - redRect.x;
        redOffset.ty = ham.y - redRect.y;    
        
        redClipBmpData.draw(ham, redOffset);    
        
        rLoc.x = redRect.x
        rLoc.y = redRect.y
        
        if(redClipBmpData.hitTest(rLoc,
                                    255,
                                    myPointBmpData,
                                    bLoc,
                                    255
                                  ))
            {
                //trace("hit");
                    ham.visible = true;
                     box.x = ham.x;
                    box.y = ham.y;
            }
            else
            {
                ham.visible = false;
                //removeChild(ham);
            }
      }
      
    myPointBmpData.dispose();
    redClipBmpData.dispose();
}

box.addEventListener(MouseEvent.MOUSE_DOWN, beginDrag)


function beginDrag(e:MouseEvent){
    e.target.startDrag();    
}


box.addEventListener(MouseEvent.MOUSE_UP, endDrag)


function endDrag(e:MouseEvent){
    e.target.stopDrag();
    e.target.x = intXPos;
    e.target.y = intYPos;
}