Latest Contributions by AndrewWilcockson

.NET Maps SDK version 200.3.0 I have a fairly complex application that uses multiple ImageOverlays to render video frames on a 3D SceneView. When I want to disable the display of the video, I call SceneView.ImageOverlays.Clear() If there is only 1 or 2 ImageOverlays then this will usually work. If there are 4 ImageOverlays then this will 100% throw the following exception: Unhandled Exception: System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at RuntimeCoreNet.GeneratedWrappers.CoreGeoView.CoreRT_GeoView_pulse(IntPtr thisHandle, IntPtr* outErrorHandle) at RuntimeCoreNet.GeneratedWrappers.CoreGeoView.Pulse() at Esri.ArcGISRuntime.UI.Controls.GeoView.Esri.ArcGISRuntime.Internal.IDxSurfaceSource.Pulse() at Esri.ArcGISRuntime.Internal.HostedSurfaceElement.CompositionTarget_Rendering(Object sender, EventArgs e) at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget) at System.Windows.Media.MediaContext.AnimatedRenderMessageHandler(Object resizedCompositionTarget) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at Esri.ArcGISRuntime.Internal.HostedSurfaceElement.SurfaceBackgroundUiWorker(Object arg) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart(Object obj) I am assuming that there is some non thread safe processing that is occurring to update the map and it is not handling the ImageOverlays collection being cleared while this is happening? Any help or advice would be greatly appreciated. ... View more

Using ArcGISRuntime.WPF version 100.12.0, and .net 8 C# application. I have a LocationViewShed that I am adding to an overlay on my SceneView, and whilst it is "working" there are weird banding artefacts in the resulting graphics. Note that I see similar weird graphical artefacts in the "Viewshed for Camera" sample application. Looking at the image you can see the banding I am talking about, and as the viewpoint shifts (analysis remains the same) the colour bands move within the viewshed results.   ... View more

I am using an ImageOverlay to present UAS video on a 3D SceneView. Whilst this works, I am finding it very resource intensive to convert every frame of video from a System.Drawing.Bitmap to an ImageFrame that I can assign to the ImageOverlay ImageFrame property. In particular, when working with in memory images, the only constructor for the ImageFrame that I can use seems to be the one that takes a RuntimeImage, and the only constructor I can use for that takes a byte array. So as every frame of video is received I have to do the following: using (var ms = new MemoryStream()) {     VideoFrameBitmap.Save(ms, ImageFormat.Bmp);     ImageAsBytes = ms.ToArray(); } imageOverlay.ImageFrame = new ImageFrame(new RuntimeImage(ImageAsBytes), new Polygon(points));   The call to VideoFrameBitmap.Save method is particularly processor intensive, and means I have to skip frames when processing 4K video. Note I have tried ImageConverter.ConvertTo but it is actually around 6 times slower than using the memory stream! So my question is, is there another way to update the ImageFrame on an ImageOverlay, from a Bitmap source without having to go through a conversion to a byte Array? ... View more