A helping Hand with Graphics speed and masks

[Matt Denton]

Hi there speed fiends,

I'm building a cute little app that displays a series off five animated 
objects, based on a series of timed events, animating usually only one 
object at a time.  I'm having a lot of trouble getting the 'speed' up 
and keeping timing consistent across platforms/machines.  I know some 
clever cookies on this list have worked out or found ways to speed up -- 
sometimes many many multiples of speed increase, such as pencil tool 
instead of line tool for turtle graphics -- all sorts of graphics and 
text handling.  I'm hoping someone can help...

The problem is I have 10 objects, each with masks attached.  Originally 
I fudged the masks, and tried animated GIFs with but that blew out my 
project size as I had to 'render off' about 200 animations, ie no 
masks.  Surprisingly the animated GIFs didn't seem to perform very well 
anyway...??? Not sure why.  I have small objects but I want to get 
around 20-25 frames per second, if possible.  The GIFs, even just on 
their own, seemed to run sluggishly... weird.

BTW, I'm on a 500Mhz Powerbook G4 so you'd expect the GIFs to be OK.  
Also I'm running OSX, however I have stepped back to 9.2.2 to see if it 
was some Quartz/Carbon conversion bottleneck.   Eventually I hope to get 
reasonable animation out of an old 7100 and PII 350 for 'low end 
performance tests'... haven't even copied the project to these yet!

Next I tried using 32bit PNGs and used the 'move command' to animate 
each object (just moves in this case) but the masks seemed to slow 
things down to what appeared to be 6-10 fps.   So I have 10 objects, 
with only three ever overlapping, each with masks but they run like 
molten lava.  I guess PNGs are best 'static'.  I noted on the list that 
Mac masking is slow, but not this slow?  We are talking smallish objects.

  I'm trying to work out the FASTEST way to display graphics across both 
platforms.  I'm trying to avoid QuickTime as I truly want to keep away 
from potential additional installs... this is only a small tool I'm 
writing.  Next step -- which I don't really want to take -- is wired 
sprites and masks in QuickTime.

I've had great joy in programming the back-end code that maintains the 
data, sends messages etc. but had a very frustrating time dealing with 
graphics, or at least 'fast moving' graphics.  Love Revolution for the 
power under the hood, if I could only work out how to get some Fast 
Blast Pixel Blittering Singing Graphics...

Any tips or comments would be appreciated.  There must be some clues 
somewhere...

Many thanks!

M@
Matt Denton