Congrats to the Apple Development team. This is a really significant
capability and implementation. I'm in the process of wading through
the documentation with the intent of adding geospatial capabilities
into the system.
We run an open source software project called OSSIM ( www.ossim.org )
which parallels the approach of quartz composer in many ways. I want
to look at what it would take move some of the geospatial file
handlers, sensor models, and map projection transformations into the
quartz architecture.
First look, it appears we both have dynamically connectable image
objects (image chains), non-destructive parameter based processing,
and deferred evaluation.
I'll be back when I've read through some of the programming docs.