Document Revision History

This table describes the changes to CGAffineTransform Reference.

DateNotes
2009-05-26Updated function descriptions to account for differences between OS X and iPhone coordinate systems.
2008-04-08Made minor corrections.
 

Updated float data types for CGAffineTransform to CGFloat.

2007-12-04Added information about the relationship between matrices and the affine transform structure.
2006-12-22Updated for OS X v10.5.
 

Changed all instances of the float data type to CGFloat data type.

2005-04-29 Updated for OS X v10.4.
 

Added documentation for the functions CGAffineTransformIsIdentity, CGAffineTransformEqualToTransform, and CGRectApplyAffineTransform.

 

Added introductory material and the constant CGAffineTransformIdentity.

2004-02-26

First version of this document. An earlier version of this information appeared in Quartz 2D Reference.