At the moment I'm starting creating a context and drawing basic shapes, is there another way to draw basic shapes on a bitmap?
Cheers, chr On Wed, Oct 8, 2008 at 4:32 PM, Christian Giordano <[EMAIL PROTECTED]> wrote: > I started questioning myself if maybe I need something else, but > clearly I have no idea which other options I have. Maybe using OpenGL > (ES)? The ultimate aim is of course to renderer the result of all the > manipulation, at the moment this happens in a UIView.drawRect. > > Cheers, chr > > > On Wed, Oct 8, 2008 at 4:25 PM, Jean-Daniel Dupas > <[EMAIL PROTECTED]> wrote: >> CGImage does not provide an efficient way to update , but maybe CGImage is >> not what you want. >> Where your image come from, why do you need a CGImageRef and what are you >> trying to do with it ? >> >> >> Le 8 oct. 08 à 17:01, Christian Giordano a écrit : >> >>> I'm modifying frequently the pixels of the images, the way I found is >>> creating a copy of the data >>> (CGDataProviderCopyData(CGImageGetDataProvider(image));) modify the >>> pixels and then create a new one. I'm facing performance issues and I >>> fear that all this allocating and deallocating is not helping. Is >>> there a way I could have access and modify the pixels of a CGImage >>> without copying them? >>> >>> Thanks, chr >>> _______________________________________________ >>> >>> 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/devlists%40shadowlab.org >>> >>> This email sent to [EMAIL PROTECTED] >>> >> >> > _______________________________________________ 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 [EMAIL PROTECTED]
