topic Re: PositionDisplay is not auto panning map in Qt Maps SDK Questions

PositionDisplay is not auto panning map

GuilhermeSG — Fri, 27 May 2016 14:18:37 GMT

I have a Map like so:

Map {

id: basemap

focus: true

positionDisplay {

showPosition: true

positionSource: PositionSource {

id: positionSrc

name: "MyPlugin"

updateInterval: 500 //ms

onPositionChanged: { console.log("current pos:", position.coordinate.latitude, position.coordinate.longitude); }

}

ArcGISLocalTiledLayer {

path: "./Topographic.tpk"

}

I created a PositionSource plugin and it updates fine, printing the new position at every 500ms. However the positionDisplay does not update its mapPoint and does not AutoPan

I have even modified the 'mode' property to every possible value:

AutoPanModeOff

AutoPanModeDefault

AutoPanModeNavigation

AutoPanModeCompass

What is missing? I expected it to zoom in to my location and follow it as latitude and longitude updates inside positionSrc

P.S.: If I print basemap.positionDisplay.mapPoint the result is 'null'

Re: PositionDisplay is not auto panning map

LucasDanzinger — Fri, 27 May 2016 16:15:35 GMT

Did you develop your own custom position plugin? Or are you just using the out of the box plugin? Just curious because of the "MyPlugin" name specified. Otherwise, seems like it should work. Does the Position display sample in the QML sample app work for you? What platform are you on?

Re: PositionDisplay is not auto panning map

GuilhermeSG — Fri, 27 May 2016 17:09:32 GMT

Yes, it is the plugin that I developed on my own. It works, because it prints a new position every 500ms.
I am on Windows 7, Qt 5.6.0 32bit

I have tested the sample app provided with the installation of the SDK.

The live example fails to get my current position using the default plugin (even though I have it set up on my windows control panel).
But the simulated example that uses nmeasource works.

Re: PositionDisplay is not auto panning map

GuilhermeSG — Fri, 27 May 2016 17:15:59 GMT

I just copied this code from the sample into mine:

Text {

text: locationPoint.isEmpty || !locationPoint.valid

? "Invalid Coordinates"

: locationPoint.toDegreesMinutesSeconds(2) +

(positionSource.position.horizontalAccuracyValid

? " ± " + Math.round(positionSource.position.horizontalAccuracy.toString()) + "m"

: "")

color: locationPoint.valid ? "white": "red"

font {

bold: true

pointSize: 16

}

And it prints my coordinates correctly

Re: PositionDisplay is not auto panning map

LucasDanzinger — Fri, 27 May 2016 19:40:09 GMT

Are you setting the mode to Enums.AutoPanModeNavigation, or just the "AutoPanModeNavigation" string?