Problem with Map and MapPolygon

Miime

Hi,
I have some problems with the QML Map. I want to display specific areas like airspaces. I figured out, that the MapPolygon, which was created for testing, is doing strange things (vertical cuts, disappearing), if I zoom in until its borders are no more part of the visible area of the map. I'm using v5.5.1 but could also reproduce it with v5.6. How can I avoid this?

Pictures

Codesnipped:

import QtQuick 2.0
import QtLocation 5.5

Item {
    height: 600
    width: 800
    anchors.centerIn: parent

    Plugin{
        id: osmplugin
        name:"osm"
    }

    Map {
        width: parent.width
        height: parent.height
        plugin: osmplugin
        gesture.enabled: true
        id: map
        zoomLevel: (maximumZoomLevel - minimumZoomLevel)/2

        center {
            latitude: 50.348888888888894
            longitude: 10.918055555555554
        }

        MapPolygon {
            color: "#550000FF"
            
            //Coburg - Germany
            path : [
                { longitude: 10.918055555555554, latitude: 50.348888888888894 },
                { longitude: 11.150833333333333, latitude: 50.2625 },
                { longitude: 11.073333333333332, latitude: 50.17611111111111 },
                { longitude: 10.840833333333334, latitude: 50.26222222222222 },
                { longitude: 10.918055555555554, latitude: 50.348888888888894 }
            ]
        }
    }
}

? Offline

Hi, and welcome to the Qt forum!

I can confirm this behaviour with Qt 5.6.0 on x86_64 Linux with Nvidia graphics drivers. What is your platform?

Miime

@Wieland Thank you :) I've tested it on Windows 7 x86 64. Tomorrow I will check this on armhf with mali, but I'm not very optimistic :/ Any ideas, how to clean up the situation?

? Offline

@Miime said:

Any ideas, how to clean up the situation?

No, sry. My hope was that we could blame the Nvidia drivers (again).

? Offline

You can file a bugreport here: bugreports.qt.io

Miime

@Wieland
Thank you for testing :)
I've done a bugreport: https://bugreports.qt.io/browse/QTBUG-53046