Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Thiago Macieira
On Tuesday, 26 May 2020 10:33:21 PDT Edward Welbourne wrote: > While I'm a linear algebraist ... and aware that the orthodoxy of > graphics programming does things "a bit differently" than linear > algebraists do, but allegedly for good reasons (that I might one day > learn). It's just the same

Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Matthew Woehlke
On 26/05/2020 13.33, Edward Welbourne wrote: It turns out that either way round works fine, as long as you're consistent. Which QTransform appears to be; and its docs correctly describe it the way it is. They are? It was *not at all* clear to me in what order the transforms would be applied.

Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Edward Welbourne
On Tuesday, 26 May 2020 09:17:05 PDT Edward Welbourne wrote: >> (Matrix multiplication isn't commutative.) Thiago Macieira (26 May 2020 18:42) > This more or less summarises all I remember from matrix classes from high > school. While I'm a linear algebraist ... and aware that the orthodoxy of

Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Thiago Macieira
On Tuesday, 26 May 2020 09:17:05 PDT Edward Welbourne wrote: > (Matrix multiplication isn't commutative.) This more or less summarises all I remember from matrix classes from high school. > I'll try to work out whether QMatrix / QTransform are consistent about it Thanks, Eddy. -- Thiago

Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Edward Welbourne
Thiago Macieira (26 May 2020 18:06) wrote: > Neither QMatrix nor QTransform have seen any change since the Qt 5.0 > repository import that was related to the underlying math. Only licensing > and C++ updates. > > The task https://bugreports.qt.io/browse/QTBUG-84441 is claiming there's > some wrong

Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Matthew Woehlke
On 26/05/2020 12.06, Thiago Macieira wrote: On Tuesday, 26 May 2020 08:59:09 PDT Thiago Macieira wrote: Neither QMatrix nor QTransform have seen any change since the Qt 5.0 repository import that was related to the underlying math. Only licensing and C++ updates. The task

Re: [Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84441

2020-05-26 Thread Thiago Macieira
On Tuesday, 26 May 2020 08:59:09 PDT Thiago Macieira wrote: > Neither QMatrix nor QTransform have seen any change since the Qt 5.0 > repository import that was related to the underlying math. Only licensing > and C++ updates. > > The task https://bugreports.qt.io/browse/QTBUG-84457 is claiming

[Development] matrix math help needed - https://bugreports.qt.io/browse/QTBUG-84457

2020-05-26 Thread Thiago Macieira
Neither QMatrix nor QTransform have seen any change since the Qt 5.0 repository import that was related to the underlying math. Only licensing and C++ updates. The task https://bugreports.qt.io/browse/QTBUG-84457 is claiming there's some wrong math or at least unexpected behaviour. Can someone

Re: [Development] QInputEvent refactoring

2020-05-26 Thread Shawn Rutledge
> On 2020 May 26, at 17:27, Shawn Rutledge wrote: > If it worked with a native swipe gesture instead, maybe it would only > receive the gesture if you are swiping from the screen edge, and only on > certain platforms. But the swipe gesture can be something else on touchpads, come to think

Re: [Development] QInputEvent refactoring

2020-05-26 Thread Shawn Rutledge
> On 2020 May 26, at 16:27, Henry Skoglund wrote: > Hi, I tried some QGestureEvents this winter in my first Qt iOS app, and got > bored having to use 3 fingers on my iPhone for swiping (1 finger seems to be > the norm on Android and iPhones). And I discovered that it was pretty easy to >

[Development] Qt Design Studio 1.5 is released

2020-05-26 Thread Thomas Hartmann
Hi all, We released Qt Design Studio 1.5 today, see https://www.qt.io/blog/qt-design-studio-1.5-released Big thanks to everyone involved! Best Regards, Thomas Hartmann ___ Development mailing list Development@qt-project.org

[Development] Qt 5.15.0 released

2020-05-26 Thread Jani Heikkinen
Hi all! We have released Qt 5.15.0 today. More information about the release can be found from Qt 5.15.0 release blog post: https://www.qt.io/blog/qt-5.15-released Big thanks to everyone involved! br, Jani Heikkinen Release Manager ___ Development