- From: Dr. Olaf Hoffmann <Dr.O.Hoffmann@gmx.de>
- Date: Mon, 13 Oct 2008 12:29:20 +0200
- To: www-svg@w3.org
Anthony Grasso: > > Please let me know if you still have problems viewing it. > Hello, this works, maybe because Opera has no problems with it, it may occur not only with animation or zooming (I think, typically zooming can be excluded, because this is only a scaling with a positive factor and for this an inverse always exists), my suggestion would be to write something like this (This way I think, it is easier to provide a simple method for authors, how to analyse the problem): "Note that the inverse of the CTM may not always exist. This may cause problems for a user-agent, if the constrained transformation is realised using the inverse of the CTM. Authors are encouraged to verify that the resultant CTM is always invertable to avoid unexpected results. Mathematically it is invertable, if the determinant of the CTM is defined and not zero, graphically this is the case, if a two-dimensional shape remains two-dimensionally before the effect of a constrained transformation is applied." Olaf
Received on Monday, 13 October 2008 10:37:46 UTC