[Interest] Qt5.6 Qt3D* module names?

Sean Harmer sean.harmer at kdab.com
Mon Dec 21 14:36:17 CET 2015


On Monday 21 December 2015 14:31:48 Brett wrote:
> Very useful info, thanks.

No problem. We will have a push on documentation in the new year.

> Is there a specific mailing list, forum or chat dedicated to Qt3D*? Or is
> this list the best place?

Here is fine.

Cheers,

Sean

> > On Dec 21, 2015, at 2:24 PM, Sean Harmer <sean.harmer at kdab.com> wrote:
> > 
> > On Monday 21 December 2015 13:05:19 Brett wrote:
> >> Looks like “3drenderer” is now “3drender”.
> > 
> > Yes that is correct.
> > 
> >> I changed that and lots of
> >> errors. Appears lots of changes to the underlying method names, classes,
> >> etc.
> > 
> > The modules now match between C++ and QML in terms of namespaces. So
> > whereas before all C++ classes were in the Qt3D namespace, they are now
> > in Qt3DCore, Qt3DRender, Qt3DInput or Qt3DLogic. The corresponding QML
> > imports are Qt3D.Core, Qt3D.Render, Qt3D.Input and Qt3D.Logic.
> > 
> > If you are using C++, the easiest way to adapt is to remove any Qt3D::
> > namespace prefixes and add using Qt3DCore etc to those compilation units.
> > 
> > If you are using QML, just search/replace Qt3D.Renderer/Qt3D.Render.
> > 
> > The other main location of API changes from 5.5 is in the
> > Qt3DCore::QTransform (Transform in qml) component. Instead of building
> > your transform up from a list of "sub" transforms the QTransform
> > component itself now does much more.
> > 
> > If wanting to apply transforms in the common scale, rotate, translate
> > (SRT)
> > ordering (i.e. an simple affine transformation) then you can directly set
> > the scale/scale3d, rotation, and translation properties. There are
> > helpers on QTransform (invokable from qml) to help you construct rotation
> > quaternions.
> > 
> > If you want to do something more complex, such as rotating about a point
> > or
> > some other combination of affine transformations (which at the end of the
> > day still results in another affine transformation) then you can set the
> > matrix property of Qt3DCore::QTransform.
> > 
> > How you do this again depends upon your needs. If rotating about a point,
> > there is another invokable helper on Qt3DCore::QTransform. If you want
> > something else then you can build up your own QMatrix4x4 for the matrix
> > property as shown in many of the examples. This last option is completely
> > analogous to the older api that is now removed but saves creating a lot of
> > QObjects.
> > 
> > In the majority of cases the new transform API results in far less code
> > being required and also opens the door for some other features we'd like
> > to add in next year (updates to frontend transformations from the backend
> > aspects).
> > 
> > There's also a bunch of other new stuff in 5.6 such as a mostly complete
> > input aspect (remaining missing bits will come with 5.7); thanks to
> > Laszlo, we now have much better support for lights; we now support
> > instanced rendering for drawing potentially many 10's of thousands of
> > copies of a mesh. Plus the usual pile of bug fixes.
> > 
> > This is still a tech preview although we don't expect the API to change
> > much at all between 5.6 and 5.7. The main points being worked on are the
> > top level "entry points" and convenience classes.
> > 
> >> Is there an upgrade guide for Qt3d and all the changes somewhere?
> > 
> > The above or git log :)
> > 
> > If you have any more questions, feel free to fire them here.
> > 
> > Cheers,
> > 
> > Sean
> > 
> >>> On Dec 21, 2015, at 12:50 PM, Brett (Gmail) <brettbibby at gmail.com>
> >>> wrote:
> >>> 
> >>> Hi,
> >>> Did the module names change for Qt3d in 5.6?
> >>> 
> >>> My 5.5 project has:
> >>> 
> >>> QT += core gui sql 3dcore 3drenderer 3dinput
> >>> 
> >>> But now I’m getting "Unknown module(s) in QT: 3drenderer” type of errors
> >>> when I try to compile. I see the frameworks in clang_64/lib so they got
> >>> installed but not getting found.
> >>> 
> >>> Thanks,
> >>> Brett
> > 
> > --
> > Dr Sean Harmer | sean.harmer at kdab.com | Managing Director UK
> > Klarälvdalens Datakonsult AB, a KDAB Group company
> > Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322)
> > KDAB - Qt Experts - Platform-independent software solutions
> 
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--
Dr Sean Harmer | sean.harmer at kdab.com | Managing Director UK
Klarälvdalens Datakonsult AB, a KDAB Group company
Tel. Sweden (HQ) +46-563-540090, USA +1-866-777-KDAB(5322)
KDAB - Qt Experts - Platform-independent software solutions



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