QML MapQuickItem Animation

saitej

Hi

My appn receives real time gps data and I need to animate the MapQuickItem with the location. What is the best way to do so?

? Offline

Hi! Something like this:

PositionSource {
    id: src
    // ...
}

MapQuickItem {
    id: myMarker
    coordinate: src.position.coordinate;
    // ...
}

saitej

@Wieland

Hi ...
Thanks for the reply. I had tried that but I am not able to set the coordinate of the source as it is saying it is read only.

I was trying to use an array of latitudes and longitudes for dev sake.

This is how I have done.
Mapquickitem

MapQuickItem {
property var rlat : [23.192993,23.212900,23.212358,23.211176,23.209993,
        23.208810,23.207627,23.206444,23.205261,23.204079,23.202896,
        23.201713, 23.200530,23.199347,23.198165,23.196982,23.195799,23.194616,23.193433,23.192250]
    property var rlon : [75.788412,75.783390,75.783406, 75.783441, 75.783476, 75.783511, 75.783545, 75.783580,
        75.783615, 75.783650, 75.783685, 75.783719, 75.783754, 75.783789, 75.783824,  75.783859
        , 75.783894, 75.783928, 75.783963,75.783998 ]
    property int temp: 0

coordinate: src.position.coordinate


PositionSource{
        id:src
    }

Timer{
        id: timer
        interval: 5000
        //        running: true
        onTriggered: {

            if(temp == rlat.length -1)
                timer.stop()
            else
            {
                src.position.coordinate = QtPositioning.coordinate(rlat[temp],rlon[temp])
                src.update()
            }
            temp++


        }
    }
Component.onCompleted: {
        timer.start()
    }
}

ldanzinger

@saitej if you are interested in using the ArcGIS Runtime SDK, that should be pretty easy with the LocationDisplay. It hooks into a map view, and directly takes in a PositionSource, and displays that on the screen - https://github.com/Esri/arcgis-runtime-samples-qt/tree/master/ArcGISRuntimeSDKQt_QMLSamples/Maps/DisplayDeviceLocation

You could then log your GPS tracks by keeping an array of coordinates, and adding graphics to the map - https://github.com/Esri/arcgis-runtime-samples-qt/blob/master/ArcGISRuntimeSDKQt_QMLSamples/DisplayInformation/GOSymbols/GOSymbols.qml

saitej

@ldanzinger

I tried the ArcGIS Runtime SDK in windows but I am getting import errors like:

module "Esri.ArcGISRuntime" is not installed
module "Esri.ArcGISExtras" is not installed

I have installed the ARCGIS SDK with QtCreator and I have given the path also correctly. ARCGIS Runtime QML appears in the project templates also!!

vladstelmahovsky

@saitej have you checked this? http://doc.qt.io/qt-5/qml-qtpositioning-coordinateanimation.html