sign problem with shear angle in transform matrix

[Miklos Vajna]

Hi Regina,

On Mon, Jan 06, 2020 at 02:35:02PM +0100, Regina Henschel <rb.henschel at t-online.de> wrote:
> A) Convert the matrix into a mathematically correct one, where it is needed,
> e.g. in case it will be multiplied by another matrix.
> B) Change core to use the mathematically correct matrix.
> C) Other idea?
> 
> I've used approach A for now. See https://cgit.freedesktop.org/libreoffice/core/commit/?id=f44140bebb9c493d97ba5aef26c9692c53a6b93f
> and my new patch in https://gerrit.libreoffice.org/#/c/core/+/86244/
> I think, because the property "Transformation" might be used by existing
> macros, it would not be good to change its content.

Indeed, in case we have live with this, then not breaking compatibility
with existing UNO API clients is always the best, I think.

Regards,

Miklos
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