Hello, I am playing with the CIMicroPaint sample code ( https://developer.apple.com/library/mac/samplecode/CIMicroPaint). This is basically a simple paint editor (you can draw on a view with a mouse using CoreImage).
I would like to save whatever is drawn into a file. So what I do is call this, when the save button is pressed: -(IBAction)saveButton:(id)sender { NSBitmapImageRep *bir = [[NSBitmapImageRep alloc] initWithCIImage:self. imageAccumulator.image]; NSData *bmpData = [bir representationUsingType:NSBMPFileType properties: nil]; //THIS LINE CORRUPTS THE CIImageAccumulator.image. WHY? [bmpData writeToFile:[@"~/test.bmp" stringByExpandingTildeInPath] atomically:YES]; //NSImage *img = [[NSImage alloc] initWithData:bmpData]; //imageView.image = img; } This is the only code i added to the original Apple sample code. The problem i have is that i can call representationUsingType only once to get the bmpData that i can save to disk as an image. If i draw something, and call it again later, i will get the old image, not the updated one. Also the commented imageView code shows the same problem - the NSImageView gets updated only the first time, not the subsequent times. What can be the cause of this? It really looks like a bug in Apple framework code. Or is it me doing something wrong? I have found similar problem/questions, but they hasn't been answered: http://stackoverflow.com/questions/23009472/ciimage-converted-to-nsdata-or-nsimage-seems-to-lose-changes-made-to-the-ciimage http://stackoverflow.com/questions/26075375/ciimage-obtained-from-ciimageaccumulator-after-converting-to-nsdata-is-corrupted Thank you! _______________________________________________ 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