[Interest] Replacement for Qt4 QMatrix4x4?
Uwe.Rathmann at tigertal.de
Fri Feb 22 12:01:13 CET 2019
On Fri, 22 Feb 2019 22:27:49 +1300, Christian Gagneraud wrote:
> If you do not want to support qreal=float anymore, please do not allow
> ./configure to make that choice and maybe get rid of qreal typedef,
> and delete qreal from Qt6 API while you're at it.
Actually there are several versions of Qt5 that do not even compile when
setting qreal=float. After reporting such a bug the fix did not even go
into the relevant LTS version ( Qt 5.9 at that time ).
Obviously building with qreal=float seems not to be covered by the Qt
tests and also does not seem to be seen as import by the development.
But the whole concept of qreal is questionable as it implies, that how to
store values is always related to the hardware architecture and/or
rendering. For a library like Qwt this is not the case and and algos like
f.e spline interpolation suffer, when using QPointF an friends.
So yes, please remove the qreal=float option with Qt6.
More information about the Interest