On Jan 28, 2010, at 12:48 PM, vincent habchi wrote: > Of course. But then, admitting I do indeed draw offscreen and then load > contents in the CALayer, on what object shall I draw? A CGLayer? Something > else?
There are only 2 types of context you can create (bitmap & pdf) and only one that can give you a CGImage as a result of the drawing (bitmap). >> If you mean to see the drawing as it progresses, you will need to manage >> that yourself. You would likely want to completely overhaul your rendering >> process to do it however, as using a small fixed number of tiles would make >> this very slow as you would end up needing to respecify content you've >> already specified (basically draw-upload-draw-upload). > > The trick would obviously be drawing offscreen and then fire a timer each > second or so to upload content until the full drawing is done. Why not? The problem isn't so much in implementing that as the performance implications of doing that. You may very well get it working quickly, but at the same time you may not like the results or the performance. Or you may find it is fine for what you are doing. It will depend a lot on how much content you have and the specifications of the system you are running on. -- David Duncan Apple DTS Animation and Printing _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
