topic Re: Round Circle MapView in .NET Maps SDK Questions

Round Circle MapView

pinisolomon1 — Sat, 27 Dec 2025 13:01:43 GMT

Hi, I need to draw a simple circle on the map and I need it to be perfect round (symmetric) on all places on the map, meaning the projection should not be taken into account.

Is it possible?

thanks

Re: Round Circle MapView

DanPatterson — Sat, 27 Dec 2025 14:44:30 GMT

Tissot's indicatrix

Tissot's indicatrix - Wikipedia and this old blog

Tissot's indicatrix helps illustrate map projection distortion

might suggest that that will be a challenge until you specify the overage you intend (global vs local) and whether the circles need to have the same area.

perhaps you could provide more constraints

Re: Round Circle MapView

dotMorten_esri — Sun, 28 Dec 2025 16:04:14 GMT

You can use geometry engines’ buffer method to do so: https://developers.arcgis.com/net/api-reference/api/net/Esri.ArcGISRuntime/Esri.ArcGISRuntime.Geometry.GeometryEngine.Buffer.html

just buffer a point that is in the same spatial reference as the map and it will be perfectly round. If you want perfectly round in the real world (which would likely look distorted in the map, use the BufferGeodesic method instead)

https://developers.arcgis.com/net/api-reference/api/net/Esri.ArcGISRuntime/Esri.ArcGISRuntime.Geometry.GeometryEngine.Buffer.html