[Interest] [Qt3d] Scene camera manipulation

Vincent Hui vincenthk007 at gmail.com
Tue Mar 13 14:31:46 CET 2018


Hi Saif,

Perhaps, you can find answers from source code of qt3d-editor
<http://code.qt.io/cgit/qt-labs/qt3d-editor.git/> and qt 3d studio. Those
are built on top of Qt 3D.

Cheers,
Vincent

On 13 March 2018 at 21:03, Saif Suleiman <saifqaher94 at gmail.com> wrote:

> Hi every one,
>
> Currently I am working on project that needs some camera manipulations,
> like :
>
>    - Fit scene in camera frustum.
>
>    - Fit Entity or more than one in camera frustum.
>
>    - Camera transition must done with animation, like when user fit
>    entity, the camera goes to its new position with animation.
>
> What I found were two functions, viewAll, viewEntity.
>
> My questions are :
>
>    - How I fit two separated entities without making a dummy parent
>    entity for them then calling camera function,  viewEntity().
>
>    - How I could get the new position from viewAll, or viewEntity so I
>    can animate the transition between old camera position and the new one.
>
> I am asking these questions because I do not want to go out of Qt3d
> implementation, and could not figure out how to do it with Qt3d.
>
> thanks in advance.
>
> best regards for Qt/Qt3d teams.
>
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