GraphicsFilter: How do I get an image with a lot of diagonal jaggies in it to scroll without flickering? I think it's more of a general graphics problem than a Flash issue, but I've included the Flash details anyway.
I'm scrolling (by which I mean moving) a large bitmap using Flash CS 3. I'm doing this by putting the bitmap in a MovieClip and then changing the x property of the instance of the MovieClip in an OnEnterFrame listener.
It doesn't look outright horrible, but it definitely flickers in places.
Part of the issue may be the nature of the image. It's drawing-like, rather than photo-like. There are jaggies
, and the areas of the image with the highest concentrations of them flicker the most. (I notice that even the Bros. Chaps' excellent developer whose name I forgot couldn't quite avoid this happening in the foreground of the Stinkoman game
.) This is a requirement, however: The jaggies are intentional.
Some other details:
- Tracing the bitmap into a vector doesn't help.
- I move it 10 pixels per frame. When I change it to move 1 pixel per frame, it's smooth-looking. Unfortunately, I need it to move at a faster rate.
- It doesn't matter whether I set the frame rate to 12 or 60 fps. At 12, it flickers, and at 30 or over, it just looks blurry.
- Same thing with making the movement rate a multiple of four. (Each block in the jaggies is 4x4 pixels in size.)
- I had some other code (but not much) subscribed to the ENTER_FRAME event, but I dropped it so that the only code that executed on each frame entrance was myMovieClip.x += 10;. No help. So, it's not a processor load issue.
- I tried having it move in direct response to a keyboard event instead of the ENTER_FRAME event, but that didn't matter, either.
- Doing this via tweening doesn't seem to help.
Any clues? My Google attacks do not seem to be hooking anything relevant.
I do have a plan B, but I'd really like for this to work.