Hi -
I'm having a weird problem with Core Animation. What I've got is a
small particle system, with one layer per particle. There are only
10-20 particles in the system at any given time. The system updates
the layers at 60 Hz from an NSTimer, and disables automatic animations
during the update.
What seems to be happening is that every time a new particle is added,
a few frames get dropped from the display (but, not the calculations).
Logging the time delta's between timer firings shows that the timer is
not missing firings. Turning off layer additions for new particles
prevents the problem (i.e, the particles - with all the associated
infrastructure, collision handling, etc - are instantiated, and added
to the system, only the addSublayer call is skipped). It's like adding
the layer suppresses the redraw of the view for a few cycles... ?!?
Anybody have any ideas?
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