Comments on: Tutorial – ActionScript 3.0 Masks

By: Christian

Christian — Sun, 14 Mar 2010 08:52:11 +0000

You have saved me. I have been looking for this informaton all night. It works now. Thank you.

By: MGM

MGM — Fri, 14 Aug 2009 17:33:19 +0000

Who ripped who off? Check the dates, V, this was first.

By: V

Tue, 28 Apr 2009 11:22:59 +0000

total rip-off i found:
http://www.pqdvd.com/blog/air/?p=82

By: larry

larry — Thu, 19 Feb 2009 02:26:04 +0000

Thank you, Craig… best explanation i found… helps a lot!

By: djerry

djerry — Mon, 19 Jan 2009 21:54:27 +0000

this is very handy
working on a project at college, thanks for this post, lifesaver ^^

By: lunatik

lunatik — Thu, 08 Jan 2009 17:41:25 +0000

Thanks god!!!
This cacheAsBitmap property is real crap!
I’ve been stuck for hours .
Thank you very much

By: Belinda

Belinda — Wed, 03 Sep 2008 19:47:59 +0000

Hi! I’m just learning flash, so I’m a bit of a newbie. How did you cause the screen to be black instead of white? The best I’ve got so far is to set my picture_mc as having opaque background black. I’d rather set the stage like this, and when I do this (I’m not sure why) my circle isn’t nice and transparent at the edges anymore Any thoughts?
My code is below:

mask_mc.addEventListener(Event.ENTER_FRAME, movemask)
dress_mc.mask = mask_mc
dress_mc.opaqueBackground = 0×000000
dress_mc.cacheAsBitmap = true
mask_mc.cacheAsBitmap = true

function movemask(e:Event):void
{
mask_mc.x = mouseX
mask_mc.y = mouseY
}

By: Kevin

Kevin — Fri, 25 Jul 2008 19:23:56 +0000

Thanks! This was just was I was looking for. I appreciate how you explained the AS3 way of doing this along with what has changed since AS2 and why.

By: ajitpal Singh

ajitpal Singh — Wed, 04 Jun 2008 05:36:54 +0000

hello sir, that is really a nice example… i have one question…. is there is any way in AS3 that we can know, which layer is mask or not…. suppose user give us a swf we loaded it in another swf. so from there can we find which layer is mask or not????? bit difficult.. hope u solve it soon. TC

By: T.G.

T.G. — Fri, 25 Apr 2008 08:55:07 +0000

henri-

I don’t know if you are still checking this post, but if I understand you correctly, I’m trying to do a similar thing as you in a game of my own right now. I have a movie clip which I want to appear black (or you could have it not appear at all) until it walks through a certain area where it will be seen until it passes out of that area.

If you don’t want it to appear at all except within the mask shape, then in your actionscript just create the clip, and create the maks clip (i use a small rectangle), and assign the mask clip to the “.mask” property of your first clip, and add them both to the stage. You should see everything else that has been added to the stage, but you’ll only see the clip you’re masking if it passes over the area of your mask clip. My only problem is that you can’t assign the same mask clip to multiple movie clips…