问题描述
- Viewport3D 导入3d信息 的时候报错，但是可以运行。
-
问题：我把3d图形转成xaml，拷贝进来之后，发现会报错误，但是点击运行，可以运行，我测试过，如果把<DiffuseMaterial > <DiffuseMaterial.Brush > <SolidColorBrush Color="#B2B200" Opacity="1.000000"/> </DiffuseMaterial.Brush> </DiffuseMaterial>删除掉，就不会报错。不知道是什么原因。
报错内容如下
**引发异常 **NullReferenceException: 未将对象引用设置到对象的实例。
InnerException: 无
StackTrace
在 Microsoft.Expression.DesignSurface.View.XamlHitTestHelper.WalkHitTestPath(Viewport3D rootViewport, ViewNode currentViewNode, List1 path)1& invisibleHits)
在 Microsoft.Expression.DesignSurface.View.XamlHitTestHelper.Record3DHitTestResult(Viewport3D rootViewport, RectangleHitTestResult summary)
在 Microsoft.Expression.DesignSurface.View.XamlHitTestHelper.FilterPotentialHit(IViewObject viewObject, IParentChainProvider parentChain)
在 Microsoft.Expression.WpfPlatform.ViewObjects.WpfViewVisual.HitTestFilterCallback(DependencyObject potentialHitTestTarget)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTestPoint(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, PointHitTestParameters pointParams)
在 System.Windows.Media.Visual.HitTest(HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, HitTestParameters hitTestParameters)
在 System.Windows.Media.VisualTreeHelper.HitTest(Visual reference, HitTestFilterCallback filterCallback, HitTestResultCallback resultCallback, HitTestParameters hitTestParameters)
在 Microsoft.Expression.WpfPlatform.ViewObjects.WpfViewVisual.HitTest(ViewHitTestFilterCallback filterCallback, ViewHitTestResultCallback resultCallback, HitTestParameters hitTestParameters, List
在 Microsoft.Expression.DesignSurface.View.XamlHitTestHelper.PerformHitTest(HitTestParameters hitTestParameters, HitTestModifier hitTestModifier, InvisibleObjectHitTestModifier invisibleObjectHitTestModifier, ICollection1 ignoredElements, Boolean stopAfterFirstHit, Boolean skipFullyContainedSelectionInObject, ViewHitTestFilterCallback filterCallback)1 ignoredElements)
在 Microsoft.Expression.DesignSurface.View.XamlSceneView.GetElementAtPoint(Point point, HitTestModifier hitTestModifier, InvisibleObjectHitTestModifier invisibleObjectHitTestModifier, ICollection
在 Microsoft.Expression.DesignSurface.View.XamlSceneView.HitElementHelper.GetSelectableElementAtPoint(Point point)
在 Microsoft.Expression.DesignSurface.View.XamlSceneView.GetSelectableElementAtPoint(Point point, SelectionFor3D selectionFor3D, Boolean selectedOnly, Boolean smartInvisiblePanelSelect)
在 Microsoft.Expression.DesignSurface.View.SceneView.GetCachedSelectableElementAtPoint(Point point, SelectionFor3D selectionFor3D)
在 Microsoft.Expression.DesignSurface.Tools.ToolBehavior.CachedHitTest(Point pointerPosition)
在 Microsoft.Expression.DesignSurface.Tools.Selection.ElementEditorBehavior.OnHoverOverNonAdorner(Point pointerPosition)
在 Microsoft.Expression.DesignSurface.Tools.ElementToolBehavior.OnHover(Point pointerPosition)
在 Microsoft.Expression.DesignSurface.Tools.EventRouter.ScopeElement_MouseMove(Object sender, MouseEventArgs args)
在 System.Windows.Input.MouseEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
在 System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
在 System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
在 System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
在 System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
在 System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
在 System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
在 System.Windows.Input.InputManager.ProcessStagingArea()
在 System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
在 System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
在 System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
在 System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
在 System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
在 MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
在 MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
在 System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
在 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)下面这个是源代码：
<Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="596.269" Width="1025"> <Grid> <Viewport3D > <Viewport3D.Camera> <OrthographicCamera Position="0.005436,0.006462,0.004638" LookDirection="-0.577382,-0.577288,-0.577382" UpDirection="-0.408204,0.816541,-0.408204" NearPlaneDistance="0.003497" FarPlaneDistance="0.010491" Width="0.026994"/> </Viewport3D.Camera> <Viewport3D.Children> <ModelVisual3D > <ModelVisual3D.Transform> <RotateTransform3D> <RotateTransform3D.Rotation> <AxisAngleRotation3D Angle="0" Axis="0,1,0"/> </RotateTransform3D.Rotation> </RotateTransform3D> </ModelVisual3D.Transform> <ModelVisual3D.Children> <ModelVisual3D> <ModelVisual3D.Content> <Model3DGroup x:Name="test"> <Model3DGroup.Children> <AmbientLight Color="#262626"/> <DirectionalLight Color="#6F6F6F" Direction="3.150000,-8.090000,-4.960000"/> <DirectionalLight Color="#454545" Direction="8.610000,4.820000,-1.640000"/> <DirectionalLight Color="#332835" Direction="-9.490000,3.090000,0.600000"/> </Model3DGroup.Children> </Model3DGroup> </ModelVisual3D.Content> </ModelVisual3D> <ModelVisual3D> <ModelVisual3D.Transform> <MatrixTransform3D Matrix="1.000000 0.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 0.000000 1.000000 "/> </ModelVisual3D.Transform> <ModelVisual3D.Content> <Model3DGroup> <Model3DGroup.Children> <GeometryModel3D> <GeometryModel3D.Material > <MaterialGroup> <DiffuseMaterial > <DiffuseMaterial.Brush > <SolidColorBrush Color="#B2B200" Opacity="1.000000"/> </DiffuseMaterial.Brush> </DiffuseMaterial> <SpecularMaterial SpecularPower="0.200000"> <SpecularMaterial.Brush > <SolidColorBrush Color="#333300" Opacity="1.000000"/> </SpecularMaterial.Brush> </SpecularMaterial> </MaterialGroup> </GeometryModel3D.Material> <GeometryModel3D.Geometry> <MeshGeometry3D 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