On Jul 22, 2016, at 1:08 AM, Trygve Inda <cocoa...@xericdesign.com> wrote: > >> But that’s not a great way to do this. You’ve made an image, you’ve encoded >> it >> as TIFF data, then you’ve made a new image, which has decoded the TIFF data >> to >> make a new image rep/bitmap. >> >> You could just add the representation directly to a new NSImage (warning: >> typed into Mail, check method names): >> >> NSImage* myImage = [[NSImage alloc] initWithSize:NSMakeSize(width,height)]; >> >> [myImage addRepresentation:theBitmapIMadeFirst]; >> >> [theBitmapIMadeFirst release]; // because NSImage retained it > > > I don't think the second part will work because of my workflow: > > At Launch: Create pixel buffer that is 1000 x 1000 pixels > > Looping thread > 1. Fill pixel buffer with pixels based on some algorithm > 2. create an NSImage with these pixels > 3. pass it to the main thread to be drawn in a window > Restart the loop with a slightly modified algorithm > > If calling this: > [myImage addRepresentation:theBitmapIMadeFirst]; > > Only causes the NSImage to retain it, then when I change the pixels in the > bitmap, they get changed in the NSImage. > > I need the NSImage to keep the pixels as they existed when I created it.
Hint: NSBitmapImageRep conforms to the NSCopying protocol. Regards, Ken _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
