Drawing MarkerSymbols on the Vertices of a MultilayerPolygonSymbol

RobinStegemann

Hi everyone!

I have a question about creating and configuring a MultilayerPolygonSymbol in the ArcGIS Maps SDK 200.6.0. My goal is to draw a polygon on the map while using a MarkerSymbolLayer to draw symbols on the vertices, a StrokeSymbolLayer to configure the outline and a FillSymbolLayer to configure the fill style.

Things are working fine for the Outline and the fill part, but the Marker Symbol is used to draw the symbol as a repeating pattern on the inside of the polygon. Now there seem to be properties to configure this type of behaviour in the application (https://pro.arcgis.com/en/pro-app/latest/help/mapping/layer-properties/position-and-place-marker-symbol-layers.htm) and the SymbolLayer API Reference (https://developers.arcgis.com/qt/cpp/api-reference/esri-arcgisruntime-symbollayer.html) mentions properties as well, but I can't seem to find any sort of documentation on how to set the properties using the C++ API or which property names are available.

 

Can anyone help me on whether my approach to this is simply incorrect or I missed a part of the documentation that elaborates on this usecase?

 

Thanks in advance,

Robin

AjithChalliyil

Hello,

C++ API does not currently support properties to control MarkerSymbolsplacement on the Vertices of a MultilayerPolygonSymbol.

However, this functionality is supported from the rendering side through the CIM, using the CIMMarkerPlacementOnVertices property.

To achieve marker placement on vertices, you will need to use a CIM symbol. You could go into Pro and author this symbol and create a MobileStyle file, save the symbol to it and use the Style API to load the symbol.Or you could publish it to a service.
https://github.com/Esri/cim-spec/blob/main/docs/v3/CIMSymbols.md#cimmarkerplacementonvertices

Thanks.