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!