I have a graphic that is being updated at a regular interval (15-20hz) that I would really like to use a KML overlay for, but cannot since updating KML Overlays doesn't work in 2d maps. (Prior Conversation on GeoNet)
So I've been using a PictureMarkerSymbol with some success, but I am now observing some weirdness with it. I'm wondering if it's something I am doing wrong or if I've stumbled on another bug.
The basic workflow is the sensor (a sonar) that we're tracking feeds us a stream of QImages. I scale the QImage to the appropriate size according to our current zoom level and map scaling and create a PictureMarkerSymbol using this code block:
Esri::ArcGISRuntime::Graphic m_graphic; // declared elsewhere
Esri::ArcGISRuntime::GraphicsOverlay m_overlay; // Set up elsewhere
Esri::ArcGISRuntime::Point point; // Set up elsewhere
m_graphic = new Esri::ArcGISRuntime::Graphic(point, &pms);
The functionality is great to an extent. But when the image exceeds a certain size (in this case, 20 meters), the PictureMarkerSymbol seems to unexpectedly change its shape as demonstrated in the 3 images I have attached. The first image shows a sonar at range of 16 meters, the second a range of 19 meters; you can see the aspect ratio of the image/PictureMarkerSymbol (dim red rectangle with the sonar fan in the front of it) is a distinct rectangle.
When the range reaches 20 meters, the aspect ratio of the image / PictureMarkerSymbol changes into a square!! I know this is not in the QImage scaling code, as I've stepped through and observed the QImage itself scaling properly. The "change" happens within the PictureMarkerSymbol.