How to create CGAffineTransform from CGAffineTransformMake?

Question

I went through apple documentation for CGAffineTransform. But I couldn't able to figure out what are the values need to be passed to CGAffineTransformMake method to create CGAffineTransform.

There are six values need to be passed for creation of CGAffineTransform. They are a,b,c,d,tx and ty.

Could anyone brief me about the parameters?

Answer 1

Generally speaking, unless you understand that matrix manipulations well (or are a masochist), you want to use the CGAffineTransformMake Rotation / Scale / Translation methods which provide a much cleaner and obvious interface for the standard tasks you want to complete.

You can also chain the transformations together with CGAffineTransform Rotate / Scale / Translate so that you can 'build' a single complex transform (or append to a previous existing transform).