[Interest] [Qt3D] QText2DEntity not appears if QLayerFilter is used

[Oleg Evseev]

I think I found internal Qt3D Entity instances that Paul mentioned -
DistanceFieldTextRenderer.
Still have confusion why they are not listed in childNode?

Anyway using recursive property introduced in Qt 5.10 looks like the only
adequate way to use QLayer on QText2DEntity
https://bugreports.qt.io/browse/QTBUG-80092

Thanks for help, Paul.

пн, 18 нояб. 2019 г. в 10:30, Oleg Evseev <ev.mipt at gmail.com>:

> Got it!
>
> Check it in Qt 5.14, recursive property helps, but why? I'm confused,
> walkEntity explicitly specifies there are no children Entities (and Nodes
> either than QTransform).
> (also there was issues with font size and QText2DEntity size, I don't
> feel the scales of it yet)
>
>
> пн, 18 нояб. 2019 г. в 09:56, Oleg Evseev <ev.mipt at gmail.com>:
>
>> Hi Paul,
>>
>> Thank for the feedback!
>> Lack of recursive QLayer is the first think I thought of. That's why
>> there is walkEntity function in test example, and it says that there is
>> only one entity - QText2DEntity :
>>
>> Entity: Qt3DExtras::QText2DEntity(0x33a3d4e0) Components:
>> QVector(Qt3DCore::QTransform(0x33a3d580), Qt3DRender::QLayer(0x33a3d310))
>>
>>
>> No internal entities. Also I had checked QText2DEntity source precisely
>> on this aspect and hadn't seen anything.
>>
>>
>> I'm currently using Qt 5.9.5 and don't have recursive property, I will
>> check it in qt 5.14 latter.
>>
>> пн, 18 нояб. 2019 г. в 09:03, Paul Lemire <paul.lemire at kdab.com>:
>>
>>> Hi Oleg,
>>>
>>> From what I can see in the code, QText2DEntity doesn't draw anything,
>>> but it instead instantiates internal Qt3D Entity instances to do the
>>> drawing.
>>>
>>> Therefore if you set the QLayer on QText2DEntity, it won't be set on the
>>> internal entities and won't draw.
>>>
>>> One option might be to set the recursive property to true on your QLayer
>>> so that setting it on QText2DEntity also makes it pickup all of its
>>> children Entities.
>>>
>>> I hope that helps,
>>>
>>> Paul
>>> On 11/17/19 2:18 AM, Oleg Evseev wrote:
>>>
>>> Hi,
>>>
>>> Did somebody successfully work with QText2DEntity in 3d scenes with
>>> QLayerFilters?
>>>
>>> Here is my project https://bugreports.qt.io/browse/QTBUG-80092.
>>> QText2DEntity doesn't appear.
>>> https://github.com/Nonmant/Qt3DExtras-QText2DEntity-Example without
>>> Layers works fine.
>>>
>>> This is the bug or maybe I set something wrong?
>>>
>>> Thanks in advance for any help.
>>>
>>> ---
>>> With regards, Oleg.
>>>
>>> _______________________________________________
>>> Interest mailing listInterest at qt-project.orghttps://lists.qt-project.org/listinfo/interest
>>>
>>> --
>>> Paul Lemire | paul.lemire at kdab.com | Senior Software Engineer
>>> KDAB (France) S.A.S., a KDAB Group company
>>> Tel: France +33 (0)4 90 84 08 53, http://www.kdab.fr
>>> KDAB - The Qt, C++ and OpenGL Experts
>>>
>>>
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