Comments on: Masking Transparent Bitmaps

By: Winford Mathews

Winford Mathews — Fri, 05 Feb 2010 13:54:59 +0000

Hello. greatjob. I did not expect this blogs on a sat.

By: Ahmad Bagadood

Ahmad Bagadood — Sun, 05 Jul 2009 10:15:01 +0000

I was able to do the text mask but when publish to a page internet explorer still shows the mask layer as a layer not a mask! any help is appreciated.

By: Ahmad Bagadood

Ahmad Bagadood — Sun, 05 Jul 2009 09:11:20 +0000

How about masking text “graneintly”?

By: Oscar H

Oscar H — Fri, 12 Jun 2009 16:25:29 +0000

running debug player on firefox and I’m getting this error.

ArgumentError: Error #2015: Invalid BitmapData.
at flash.display::BitmapData()
at Main()

I thought you should know..

By: Oscar H

Oscar H — Fri, 12 Jun 2009 16:23:53 +0000

awesome! great help. good techniques..

By: Soulwire

Soulwire — Fri, 09 Jan 2009 19:00:41 +0000

Cheers Rob! The whole bitmap cached bitmap thing makes much more sense now. Thanks for the note :)

By: Rob

Rob — Fri, 09 Jan 2009 18:36:05 +0000

Bitmaps are rendered as bitmap-filled shapes so that they can be anti-aliased onto sub-pixels – turning on caching snaps them to exact pixels.

Anyhow – very cool technique, thanks for posting!

By: TroyWorks

TroyWorks — Fri, 26 Dec 2008 06:54:54 +0000

How funny, I ran into something similar last week. What I did was probably more hacky,

Since I wasn’t looking for a gradient mask, I drew the vector mask into the green channel of a temporary bitmap and the alpha of the real bitmap into the blue channel, into the other then thresholded to get the areas that overlapped blue and green, then copied that into the alphachannel of the end bitmap.

By: Soulwire

Soulwire — Fri, 12 Dec 2008 16:30:19 +0000

“Unfortunately that’s not the only strange thing in as…”

Haha; Amen to that mate! ;)

By: tf

tf — Fri, 12 Dec 2008 16:17:44 +0000

you’re welcome :)

You’re right, each approach has it’s own pros and cons.
It’s also true that having a Bitmap object that can be not cachedAsBitmap sounds really strange o_0
Unfortunately that’s not the only strange thing in as…

anyway, thanks a lot for sharing your experience