RE: [flasher] Re: X and Y coordinates - Confusion!

[Paul Willoughby]

Call me stupid and/or lazy but I just don't get F5's localToGlobal, the

example code in the manual seems excessive for such a meagre task (although

I admit manual examples aren't always the best written!). I prefer to use

the old Flash 4 hack of just adding the parent clip and local clips x

position. Try this code on the nested movie clip on an enterFrame action

when you're dragging a parent clip around:


// local to global


myLocalX = this._x;

myGlobalX = _parent._x - this._x;

trace("the nested clips local x is: " + myLocalX);

trace("the nested clips global x is: " + myGlobalX);

trace("-------------------------------------------");


this can get a bit hairy if you need to get the global position of a clip

nested 6 deep, but it gets the job done ;)


hth


paul


BTW why are there 9 little boxes on the object panel when you can only

select the middle or top left as the registration point?



> -----Original Message-----

>

From: Muzak [muzakpandora [dot] be (mailto:muzakpandora [dot] be)]

> Sent: 26 February 2001 12:36

> To: flasher from chinwag

> Subject: [flasher] Re: X and Y coordinates - Confusion!

> 

> 

> If you select an object on the stage. The x and y coordinates 

> shown will be the top left corner of the object. If you then select

> the little white square in the middle of the 9 boxes, it will 

> turn black and the x and y coordinates of the object shown in the info

> panel are now the center point of the object (in refence to 

> it's parent) instead of the top left corner.

> 

> When using the get property for the x and y position of an 

> object, the returned values are those of the objects center point, not

> it's top left corner --> unless of course you have moved the 

> center point of the object to the top left corner of the 

> object (or the

> other way around - hope that's clear - don't know how else to 

> explain this).

> If you have a MC in another MC, the position of the movieclip 

> will be in reference of it's parent movieclip and not the main

> timeline. You can use globalToLocal() to 'convert' it's x and 

> y coordinates in reference to the _root and localToGlobal() does the

> opposite.

> Look up MovieClip.loacalToGlobal() and 

> MovieClip.globalToLocal() in the Actionscript dictionary for 

> more on that.