[Interest] Drawing Frustum on Scene3D

[Alex john]

But in quick3D that would be done with a class derived from
QQuick3DGeometry with primitives set to lines
"setPrimitiveType(QQuick3DGeometry::PrimitiveType::Lines)"
to construct a cube. Then register that class to qml and use it in
your View3D. Hope it helps.

Any alternative to QQuick3DGeometry as I'm using 5.10?

On Fri, Mar 5, 2021 at 5:00 PM joao morgado <joaodeusmorgado at yahoo.com> wrote:
>
> Hi
>
> That frustum is just a group of lines in cube shape, you see it as a frustum because the camera is in perspective mode.
> I never used Qt3D so cannot help with scene3d.
> But in quick3D that would be done with a class derived from QQuick3DGeometry with primitives set to lines "setPrimitiveType(QQuick3DGeometry::PrimitiveType::Lines)"
> to construct a cube. Then register that class to qml and use it in your View3D. Hope it helps.
>
> João
> Em sexta-feira, 5 de março de 2021 09:46:15 GMT, Alex john <blackbriar153 at gmail.com> escreveu:
>
>
> Hello Qt
>
> I like to render a frustum as here https://imgur.com/a/BzmCQ2D on
> Scene3d. Can you let me know how it can be done? If I have to get the
> custom QML ,do I have to get it from the C++ and then push it to the
> QML context? Any pointers to basic code is appreciated.
>
> Thanks.
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