QmlPolygon parsing within IdentifyTask?

ChuckBenton — Thu, 28 May 2015 17:23:56 GMT

I'm using a REST MapServer which provides a layer of parcel (property line) data on my map, all under Qt.

I need to parse the parcel boundaries into a list of vertices (for rending in an Augmented Reality view) and am using IdentifyTask to get the data. I get the top-level information ok, but then find a QMLPolygon and am unable to figure out how to parse the data out it.

This is the key code:

        IdentifyTask {

                id: identifyTask

                url: serviceLayerUrl

                onIdentifyTaskStatusChanged: {

                    if (identifyTaskStatus === Enums.IdentifyTaskStatusCompleted) {

                        for (var index in identifyResult) {

                            var result = identifyResult[index];

                            console.log("Name, Value:", result.layerName, result.value.toString());

                            console.log("Geometry:", result.feature.geometry);

                    } else if (identifyTaskStatus === Enums.IdentifyTaskStatusErrored) {

                        resultText.text = identifyError.message;

This is the output:

qml: Name, Value: ME_Acton_Cape_Polygons_Merge U13-57

qml: Geometry: QmlPolygon(0x7ffc69fc1e80)

I'm not finding any documentation on QmlPolygon. From related projects written in Objective-C and Java (iPhone and Android) I know there's a PointCount followed by a list of vertices. Any suggestions on how to access them?

Apologies in advance if this is a simple question, REST service use within ArcGIS is new to me.

Thanks! Chuck

Re: QmlPolygon parsing within IdentifyTask?

ChuckBenton — Thu, 28 May 2015 18:43:46 GMT

Figured it out (that's what happens when you post a question!)

Using properties from ArcGIS Runtime SDK for Qt (QML API): MultiPath solved it, for example

console.log("Points:", result.feature.geometry.pointCount.toString());

yields

qml: Points: 6

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QmlPolygon parsing within IdentifyTask?

Re: QmlPolygon parsing within IdentifyTask?