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API's for Drawing shapes and HitTest

VishnuB

Hi,

I am using ArcGIS Runtime 100.2.1 for Qt. Few days back i have gone through some sample runtime application for WPF. In that i saw many useful and easy API's for creating geometries and identifying graphics layers

// Wait for user to draw
var geom = await MyMapView.Editor.RequestShapeAsync(DrawShape.Polygon);

//Hit test whlie mouse hovering

var graphic = await _graphicsLayer.HitTestAsync(MyMapView, screenPoint);

Is there any similar kind of API's available in Runtime sdk for Qt?

Thank You

Vishnu B

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BradDuBois

Hello Lucas,

I’m working on providing a routing interface for flight plans. I am using the C++ and QML combination for the application so I have a MissionMap class that holds a SceneQuickView and is instantiated from QML. I want to be able to draw and edit a collection of lines with a symbol at the vertices and line ends that are not connected. I’d like to be able to click on the symbol to move the line end(s) around and redraw the line(s) as it’s being dragged. I am currently using a GraphicsOverlay and I’m just starting working through the live drawing of a route using the mouse. I am able to draw lines using the mouse click but I wanted to also be able to move the lines as discussed above but not sure how best to detect that a line has been clicked (I’m not drawing the vertex symbol yet, maybe I should work on that first so I can be more deterministic about which end of the line I want to move).

I also need to be able to draw the lines in 3D space, when I add a complete line programmatically and set the surfacePlacement to Absolute (I’ve tried various, and extreme z values, and the other surface placement types), it does not draw above the surface of map. I’m sure I’m doing something wrong, but I was able to use the corollary from QML and display lines in 3D space.

I still need to create some data structures to wrap around these overlay objects so I can get back to them and edit as needed.

Any help is greatly appreciated to be able to use this SDK to its fullest potential!

Thanks,

Brad DuBois

Lucas Danzinger

SketchEditor still is not yet available, but you can still use the GeometryBuilder classes to build whatever geometries you want. Can you share some details about what workflows you are trying to achieve so we can prioritize the necessary work?

BradDuBois

What is the status of this for the Qt SDK?

Lucas Danzinger

Hi Vishnu,

This looks like you are comparing the 10.2.x version to the 100.x version. GraphicsLayer has been replaced by GraphicsOverlay and hitTest has been replaced with MapView.identifyLayer/MapView.identifyGraphics.

With that said, Qt does not yet have these helpers to draw shapes easily, whereas .NET and other SDKs already do have the implemented. You can use the GeometryBuilder classes to draw geometries on your own, but the simplified helpers are not there yet. This is a feature that we call the "SketchEditor". We hope to have them soon in the Qt SDK.

Thanks,

Lucas

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