Exception: Index was outside the bounds of the array

[DaveInCaz]

I received an exception using https://github.com/EchoParkLabs/geometry-api-cs which is a port of this library, so I'm not sure if reporting it here will be useful or not. Here are the details in case it is...

I received the exception below on a line like this:

var results = com.epl.geometry.GeometryEngine.Cut(polyline1, polyline2, null);

The problem seemed to be related to the fact that:

• polyline1 and polyline2 contained the same sequence of two points
• The start & end points of each polyline were the same

Specifically, each polyline ran from {610, 552} to {610, 552}.

(This has been reproduced also with alternative numeric values).

   at com.epl.geometry.MultiVertexGeometryImpl.GetXY(Int32 index, Point2D pt)
   at com.epl.geometry.MultiVertexGeometryImpl.GetXY(Int32 index)
   at com.epl.geometry.EditShape.GetXY(Int32 vertex, Point2D ptOut)
   at com.epl.geometry.Cutter._getCutEvents(Int32 orderIndex, EditShape editShape)
   at com.epl.geometry.Cutter.CutPolyline(Boolean bConsiderTouch, Polyline cuttee, Polyline cutter, Double tolerance, List`1 cutPairs, AttributeStreamOfInt32 segmentCounts, ProgressTracker progressTracker)
   at com.epl.geometry.OperatorCutCursor.Generate_polyline_cuts_()
   at com.epl.geometry.OperatorCutCursor.GenerateCuts_()
   at com.epl.geometry.OperatorCutCursor.Next()
   at com.epl.geometry.GeometryEngine.Cut(Geometry cuttee, Polyline cutter, SpatialReference spatialReference)
   at Carrier.HAP.BuildingGeometry.GeometryProcessor.<SplitLine>d__7.MoveNext() in D:\hggeom\libraries\HAPCalcNxG\Source\Configuration\Buildings\GeometryProcessor.cs:line 73
   at System.Linq.Enumerable.Count[TSource](IEnumerable`1 source)
   at Carrier.HAP.BuildingGeometry.GeometryProcessor.PrepareBuildingForInput(IntegerLine input) in D:\hggeom\libraries\HAPCalcNxG\Source\Configuration\Buildings\GeometryProcessor.cs:line 140
   at Carrier.HAP.BuildingGeometry.GeometryProcessor.AddGeometry(IntegerLine rawInput) in D:\hggeom\libraries\HAPCalcNxG\Source\Configuration\Buildings\GeometryProcessor.cs:line 198
   at Carrier.HAP.PolylineTool.ProcessPolylineIntoRepository() in D:\hggeom\libraries\HAPGUI600\Source\FloorPlan\PolylineTool.cs:line 238
   at Carrier.HAP.PolylineTool.ConcludeCapturing() in D:\hggeom\libraries\HAPGUI600\Source\FloorPlan\PolylineTool.cs:line 129
   at Carrier.HAP.PolylineTool.MouseLeftButtonDownHandler(Object sender, MouseButtonEventArgs e) in D:\hggeom\libraries\HAPGUI600\Source\FloorPlan\PolylineTool.cs:line 78
   at Carrier.HAP.FloorplanControl.mainCanvas_MouseLeftButtonDown(Object sender, MouseButtonEventArgs e) in D:\hggeom\libraries\HAPGUI600\Source\FloorPlan\FloorplanControl.xaml.cs:line 159
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(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 System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ThreadContext.LocalModalMessageLoop(Form form)

[stolstov]

@DaveInCaz I can reproduce this crash in java. Thank you for reporting this. We'll provide a fix here in geometry-api-java.