Comments on: Flash Motion Blur Sprite Source

By: Rossie

Rossie — Fri, 22 Jul 2011 11:25:53 +0000

Hi Rob!

This is an excellent class! Thank you for sharing!

I fount a small bug, it throwed me a BitmapData argument error, when it occured to the bitmapWith or bitmapHeight property to be less than 1.
I worked it around with a pach at line 129 and 130:
from:
bitmapWidth = (Math.max(tlX, brX) + distance)*2;
bitmapHeight = Math.max(tlY, brY)*2;
to:
bitmapWidth = Math.ceil((Math.max(tlX, brX) + distance)*2);
bitmapHeight = Math.ceil(Math.max(tlY, brY)*2);

I hope this helps others..
Thank you!

Gergely Rossel.

By: Rob Muller

Rob Muller — Tue, 14 Jun 2011 01:02:24 +0000

Hi Joe,

Sorry – you can’t extend an existing sprite with this class. Think of it more like a container sprite – i.e. you should create an instance of your sprite then add it as a child to an instance of MotionBlurSprite. I’ll update the notes.

By: Joe

Joe — Sun, 12 Jun 2011 00:38:18 +0000

Amazing work, but I can’t figure out how to use it. I have a sprite extending this class, and I’m calling blur2() in an enterFrame function, passing in the correct dx and dy values, but there’s no blur! Could I have a quick example of the implementation?

By: codeslaw

codeslaw — Thu, 02 Jun 2011 19:39:57 +0000

This is great, thanks.

By: Nolsto

Nolsto — Mon, 27 Sep 2010 04:10:09 +0000

Cool. I wonder if there would be an efficient way to blur the sprite based on its global transform matrix. In effect making the blur scale constant across all sprites, more like a camera aperture.

By: Rob Muller

Rob Muller — Sun, 04 Apr 2010 09:18:39 +0000

No, you weren’t hallucinating. Here it is: http://rmd.com.au/archives/flash-radial-spin-zoom-motion-blur

By: boxbuilder

boxbuilder — Fri, 02 Apr 2010 09:57:38 +0000

hi! was I hallucinated? Yesterday I saw on your blog a beautiful experiment about 3D motion blur. Is it possible I saw a firefox logo jumping around?

By: flanture

flanture — Sun, 30 Aug 2009 15:50:06 +0000

great class!

this was actually something I needed earlier when I was coding movie clip shadows, but this is much better and code is clean

thanks for sharing

By: Og2t

Og2t — Tue, 25 Aug 2009 08:47:57 +0000

At last! ;) It’s great, thanks for sharing Rob.