Surface3D and CustomItems

[MrDaniel]

Hello,

I am working with Qml Types for a UI as a front end to a C++ application.

QT is really neat! I got a 3D surface with a texture, and i can also super-impose a heat map! It's awesome!

Now. I am interested in marking specific points. There could be a lot of them so am unsure how to handle this.

If we take the example of the QML Type example it creates a cool output.

https://doc.qt.io/qt-5/qtdatavisualization-qmlsurface-example.html

Now. How to add points. Let's say we want a label on each of the highest peaks of the terrain. Assume the calculation is done, and we want to place 4 markers inside of the Surface3D.

Simplest example would be to put a "O" at each location. This does not appear in the Surface3D displayed when it is run.

        Custom3DLabel
        {
            visible: true
            position: vector3d(3, 3, 3)
            scaling: 10
            text: "O"
            textColor: "black"
        }

I think the vector3d is an issue, but not sure what to replace it with.

So if i can get a label at each point i desire on the terrain. Could this be made to use a sphere? If there's 100s of points i don't want performance to be a BIG issue. ;)

Please let me know you're thoughts. I'm stuck with this for now.

UPDATE:

Also, i would like to add these dynamically during an onClicked event for a button. And removed by another onClicked event. Any thoughts on managing this?

Update:
customItemList: [
Custom3DLabel
{
visible: true
position: "0,0,0"
scaling: 1
text: "O"
textColor: "black"
}
]

Now i'm adding it to the customItemList of the Surface3D but still can't see the text.

Regards

[MrDaniel]

This was too computationally expensive.

customItemList should be define in the qml and then you can add to it!