I've been doing exactly this recently, and have had excellent success
with using CALayers (Core Animation). An NSTimer with a fast repeat
rate is triggering a method that assigns in one of an array of
CGImageRef's to the layer's contents property has made for a really
decent "flipbook" style of animation. I've been able to get 60 frames
per second without issue.
I believe you can load up the CGImageRef's from NSImage through
CGBitmapContext and CGBitmapContextCreateImage. I've been working with
a *cough* different framework to get the images and display them - one
that's significantly less powerful than a standard Mac desktop - but
the throughput has been effectively the same.
-joe
On Aug 2, 2008, at 3:01 PM, Charles Steinman wrote:
--- On Sat, 8/2/08, Matt R <[EMAIL PROTECTED]> wrote:
I have read through Apple's drawing optimization guide
and have been
searching for a way of speeding these operations up, they
are unacceptably
slow. I have several 72dpi PNG image files (about 1024x768
each) which I
need to draw repeatedly into a standard NSView subclass
over time. I would
like to avoid using OpenGL directly if possible, it seems
like there should
be a faster way of drawing these other than NSImage's
draw or composite
methods.
You might try a CGLayer. It's designed for fast repeated drawing.
Cheers,
Chuck
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