> On 26 Mar 2023, at 17:34, Maxime Roussin-Bélanger
> <maxime.roussinbelan...@gmail.com> wrote:
>
> On Sun, Mar 26, 2023 at 3:35 AM Mike Krus <mike.k...@kdab.com> wrote:
>>
>> But doesn’t the system know you are changing the entities?
>> You say mouse click changes the entities, what does it do exactly, are you
>> using a QObjectPicker or something?
>
>
> No QObjectPicker, well maybe in the future, but at the moment we are
> only using menus, but I was curious how to find
> the whole bounding volume of the scene, but I think we can simplify it.
>
> Imagine instead of the whole scene we have `Qt3DCore::QGeometry`; on
> this object, we have
> {min,max}ExtentChanged. Instead, I would like to listen to the
> bounding volume changed signal instead of being double-tapped by
> those two signals. I found https://bugreports.qt.io/browse/QTBUG-54584
> which would be helpful for something
> we are trying to do.
I’ve updated that ticket with info on what was added since it’s creation.
> If we can get the entity bounding sphere changed signal I don't think
> I would need it on the scene.\
Could listen to QGeometry::minExtentChanged signals…
But again, from your menu action, you could first change the geometry and then
tell the camera to recenter (might have to delay that a short while, Qt3D
asynchronously updates bounding volumes).
Mike
> Max.
>
>
>>
>> Mike
>>
>>
>>> On 26 Mar 2023, at 07:38, Maxime Roussin-Bélanger
>>> <maxime.roussinbelan...@gmail.com> wrote:
>>>
>>> On Sat, Mar 25, 2023 at 11:55 AM Mike Krus <mike.k...@kdab.com> wrote:
>>>>
>>>>
>>>>
>>>>> On 25 Mar 2023, at 15:04, Maxime Roussin-Bélanger
>>>>> <maxime.roussinbelan...@gmail.com> wrote:
>>>>>
>>>>> Hello,
>>>>>
>>>>> The entity change is caused by user input, the user moves the mouse over
>>>>> the entity and changes its shape, or it can use
>>>>> a menu to change the entity shape. I think I would have to inject the
>>>>> camera into _every_ entity object?
>>>> If the user moves the mouse, something in your application must be
>>>> changing the shape, that can also reset the camera…
>>>> I think I need example code of what you are trying to achieve.
>>>>
>>>
>>> I don't want my entities to know about the camera, ideally, I would
>>> like the system, qt, to tell me that the bounding sphere has changed
>>> in some ways.
>>>
>>> Max.
>>>
>>>>
>>>> Mike
>>>>
>>
>> —
>> Mike Krus | mike.k...@kdab.com | Senior Software Engineer & Teamlead
>> KDAB (UK) Ltd., a KDAB Group company
>> Tel: UK Office +44 1625 809908 Mobile +44 7833 491941
>> KDAB - The Qt Experts, C++, OpenGL Experts
>>
—
Mike Krus | mike.k...@kdab.com | Senior Software Engineer & Teamlead
KDAB (UK) Ltd., a KDAB Group company
Tel: UK Office +44 1625 809908 Mobile +44 7833 491941
KDAB - The Qt Experts, C++, OpenGL Experts
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