CGAffineTransformMakeRotation 360 degree rotation

Have you figured this out?

I'm trying to do the same thing, and I can't get the rotation passed 180 degrees.

Thanks,
Felix

Have you tried negativ values? The first half goes from 0 - Pi, the second half from -Pi to 0. This should form a 360 degree turn.

Hey thanks for the reply..Just gave it a try,and it didn't help. Here is my code:

CABasicAnimation *rotateAnimation = |CABasicAnimation animationWithKeyPath:@"transform"|;
rotateAnimation.duration = 1;
rotateAnimation.repeatCount = 1;
rotateAnimation.autoreverses = NO;
rotateAnimation.toValue = |NSValue valueWithCATransform3D:CATransform3DRotate(touchedLayer.transform, DegreesToRadians(180), 1.0 ,0.0 ,0.0)|;

CABasicAnimation *rotateBackAnimation = |CABasicAnimation animationWithKeyPath:@"transform2"|;
rotateBackAnimation.duration = 1;
rotateBackAnimation.repeatCount = 1;
rotateBackAnimation.autoreverses = NO;
rotateBackAnimation.toValue = |NSValue valueWithCATransform3D:CATransform3DRotate(touchedLayer.transform, DegreesToRadians(-180), 1.0 ,0.0 ,0.0)|;

|touchedLayer addAnimation:rotateAnimation forKey:@"rotate"|;
|touchedLayer addAnimation:rotateBackAnimation forKey:@"rotateback"|;

Any ideas?

A 360 degree transformation is no transformation, but you cn rotate something a full 360 degrees by applying a smaller rotation multiple times. I would compute the transformation for a 90degree rotation and apply that 4 times in the time you wanted to apply the 360 rotation once.

I tried that... I set rotateAnimation.repeatCount = 4; and the angle to 90 degrees..

Basically it just rotates my view 90 degrees 4 times from the same position. Meaning the transformation isn't combining, but rather it rotates 90 degrees resets back to 0 and does it again 3 more times.

Any idea how to "combine" transformations?

Thanks,
Felix

I dont have any experience here so i could be blowing smoke- but i think you would have to save the matrix after every transformation- and combine it with the current matrix when doing a new transformation.

Yea you are probably right...the CGAffineTransformMakeRotation actually returns a matrix...then i can use

CGAffineTransform CGAffineTransformRotate (
CGAffineTransform t,
CGFloat angle
);

To transform the original Matrix.

I will give it a shot and report back.

That works..thanks for the help.

Felix