Keep a list of Polybuilder addPoints for use in another method?

NothernCoder — Sun, 05 Feb 2023 18:31:47 GMT

Good afternoon, I got the following code which starts at constructor AppEditor() and I'm handling mouse clicks to place markerGraphics at the clicked position. All works well so far except the method stopPlacingMarkers(), which is called from a button on the UI, display an empty polyBuilder-ToGeometry(). Shouldn't the markerPosition X and Y addPoint be in there?

How would I go about appending all mouse click markerGraphics so that it is available in the last method qDebug()?

void AppEditor::AppEditor() { Esri::ArcGISRuntime::PolylineBuilder* polyBuilder = new PolylineBuilder(SpatialReference::wgs84(), this); Esri::ArcGISRuntime::SimpleMarkerSymbol* markerSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbolStyle::Square, QColor(Qt::black), 2.0, this); } void AppEditor::createdMarkerOnMap(Point markerPosition) { polyBuilder->addPoint(markerPosition.x(), markerPosition.y()); // create a graphic from clicked marker position Esri::ArcGISRuntime::Graphic* markerGraphic = new Graphic(polyBuilder->toGeometry(), markerSymbol, this); // add to graphics overlay and display on map graphicsOverlay->graphics()->append(markerGraphic); } void AppEditor::stopPlacingMarkers() { // output polyBuilder point(s) qDebug() << polyBuilder->toGeometry(); }

Thanks for any tips / help.

Re: Keep a list of Polybuilder addPoints for use in another method?

PaulSturm — Mon, 06 Feb 2023 16:23:50 GMT

A quick way to see the x/y values of a polyBuilder would be to convert the geometry to JSON:

qDebug() << PolyBuilder->toGeometry().toJson();

This will give you something like:

"{\"hasZ\":true,\"paths\":[[[-160,34,0],[-175,40,25],[-182,36,0]]],\"spatialReference\":{\"wkid\":4326}}"

Re: Keep a list of Polybuilder addPoints for use in another method?

NothernCoder — Mon, 06 Feb 2023 16:25:58 GMT

Good catch, never noticed that .toJson() method.

Thank you!

topic Keep a list of Polybuilder addPoints for use in another method? in Qt Maps SDK Questions

Keep a list of Polybuilder addPoints for use in another method?

Re: Keep a list of Polybuilder addPoints for use in another method?

Re: Keep a list of Polybuilder addPoints for use in another method?