Helix Toolkit 最近在 WPF 应用程序中添加了管对象，是否不触发事件或对鼠标交互做出反应？

Question

我正在使用带有 Helix Toolkit 的 WPF 应用程序，我在其中将多个 3D 对象动态添加到视口中。对象的视觉效果已成功添加，但最近添加的一些对象（在本例中为管对象）没有触发事件，也没有显示相应的工具提示消息。在与应用程序的 GUI 进行一些交互并将新的附加 3D 对象添加到视口之后，已添加的旧对象正在触发事件并显示其工具提示消息...... 我还注意到，如果我添加一些其他新的 3D 对象，并且如果我在按下鼠标右键的情况下旋转相机，它们就会响应！

那么是什么导致了这个问题？是否存在渲染或相机问题或其他问题？

我正在使用这段关于带有 SortingVisual3D 的视口的代码，其中所有对象都添加在透明表面后面：


<helix:HelixViewport3D Grid.Column="0" Grid.Row="1" Grid.RowSpan="10" Background="GhostWhite"  Name="_viewport"  ShowFrameRate="True"  ShowTriangleCountInfo="True" ShowViewCube="True"  IsHitTestVisible="True" CalculateCursorPosition="True" ShowCoordinateSystem="True" >

<helix:DefaultLights/>

<helix:SortingVisual3D x:Name="sortingVisual1"  Method="BoundingBoxCorners" IsSorting="True"  SortingFrequency="4"  >
                <helix:MeshGeometryVisual3D x:Name="_cubeObjects">
                </helix:MeshGeometryVisual3D>                

                <helix:MeshGeometryVisual3D x:Name="_tubeObjects">

                </helix:MeshGeometryVisual3D>             

               //Transparent surface

                <helix:MeshGeometryVisual3D x:Name="_transparentSurface"  >

                </helix:MeshGeometryVisual3D>            

            </helix:SortingVisual3D>
        </helix:HelixViewport3D>
      </strike>

这是我动态添加对象的方式：

AddObject tubeObject = new AddObject(points3dCollection, "Tube Object", tubeDiameter, 36, objectMaterial);
                                     
                   tubeObject.MouseLeftButtonDown += new MouseButtonEventHandler(tubeObjectClick);
                    tubeObject.IsHitTestVisible = true;              
                    tubeObject.SetName("Tube Object");

 ContainerUIElement3D cui = new ContainerUIElement3D();               
                cui.Children.Add(tubeObject);
                _tubeObjects.Children.Add(cui);


'-------------------This is the class AddObject definition:-------------------------------'


class AddObject : UIElement3D,INotifyCollectionChanged
    {       

        private readonly Timer _timer;
        private readonly ToolTip _toolTip;

        public AddObject DataContext { get; }
            
      
        public AddObject(Point3DCollection path, string objectName, double diametar_1, int thetaDiv, Material material)
        {
            MeshBuilder builder = new MeshBuilder();       
                           
               
                List<Point3D> list = new List<Point3D>();

                for (int i = 0; i < path.Count; i++)
                {

                    list.Add(path[i]);

                }               

                list = CanonicalSplineHelper.CreateSpline(list, 0.5, null, false, 0.9);
            
                builder.AddTube(list, diametar_1, thetaDiv, false, true, true);          
           
                GeometryModel3D model = new GeometryModel3D(builder.ToMesh(), material);             
                model.SetName(objectName);
                Visual3DModel = model;            
             
                _toolTip = new ToolTip();
              
                _timer = new Timer { AutoReset = false };
                _timer.Elapsed += ShowToolTip;

                DataContext = this;        
          


        }

 public event NotifyCollectionChangedEventHandler CollectionChanged
        {
            add
            {
                ((INotifyCollectionChanged)DataContext).CollectionChanged += value;
            }

            remove
            {
                ((INotifyCollectionChanged)DataContext).CollectionChanged -= value;
            }
        }

        public object ToolTipContent { get { return _toolTip.Content; } set { _toolTip.Content = value; } }    

        private void ShowToolTip(object sender, ElapsedEventArgs e)
        {
            _timer.Stop();
            if (_toolTip != null)
                _toolTip.Dispatcher.Invoke(new Action(() => { _toolTip.IsOpen = true; }));
        }

       protected override void OnMouseEnter(MouseEventArgs e)
        {
            base.OnMouseEnter(e);

            var gm = Visual3DModel as GeometryModel3D;        

            gm.Material = gm.Material == materialtype ? Materials.Yellow : materialtype;

            if (_toolTip != null)
            {
                _toolTip.IsOpen = true;
                _toolTip.Content = gm.GetName().ToString().Trim() + " vein "; }
            //  _timer.Interval = ToolTipService.GetInitialShowDelay(Application.Current.MainWindow);
            _timer.Interval = 50;
            _timer.Start();          

            e.Handled = true;
        }

        protected override void OnMouseLeave(MouseEventArgs e)
        {
            base.OnMouseLeave(e);

            var gm = Visual3DModel as GeometryModel3D;
            gm.Material = gm.Material == materialtype ? Materials.Yellow : materialtype;

            _timer.Stop();
            if (_toolTip != null)
            { _toolTip.IsOpen = false;
                _toolTip.Content = "";            
            }           

            e.Handled = true;

        }

}


What should I check at first? Any idea is welcomed ! Please help !

Answer 1

最近插入的对象立即响应问题用这段代码解决：

<helix:MeshGeometryVisual3D >
                <ContainerUIElement3D x:Name="_cubeObjects">
            </ContainerUIElement3D>
                </helix:MeshGeometryVisual3D>
            <helix:MeshGeometryVisual3D >
                <ContainerUIElement3D x:Name="_ballClickPoints">
                </ContainerUIElement3D>

            </helix:MeshGeometryVisual3D>
                <helix:MeshGeometryVisual3D >
                <ContainerUIElement3D x:Name="_tubeObjects">
                </ContainerUIElement3D>

            </helix:MeshGeometryVisual3D>
           
                        <helix:MeshGeometryVisual3D x:Name="_transparentSurface">

            </helix:MeshGeometryVisual3D>

因此，更改是将 ContainerUIElement3D 用于 MeshGeometryVisual3D。对象会立即响应鼠标事件。

Helix Toolkit 最近在 WPF 应用程序中添加了管对象，是否不触发事件或对鼠标交互做出反应？

Helix Toolkit recently added tube objects in WPF application, are not firing events or reacts on mouse interaction?

c#

wpf

events

helix-3d-toolkit

helix