如何在螺旋线WPF中自动旋转三维模型

Question

你好，我正在从事显示3D模型的项目，我使用了helix 3D工具包，所以这里有xaml代码：

 <h:HelixViewport3D Name="hlx" ZoomExtentsWhenLoaded="True" RotateAroundMouseDownPoint="False"  ShowViewCube="False"  Opacity="0.8"  Grid.Column="4" Grid.ColumnSpan="2" Grid.Row="4" Grid.RowSpan="3">
        <h:DefaultLights/>

    </h:HelixViewport3D>

这里的C#代码是：

   void C()
    {
        ModelVisual3D model = new ModelVisual3D();

        model.Content = Display3d(@"D:\tests for projects\Em organic compounds\Em organic compounds\Car.3DS");

        hlx.Children.Add(model);

    }
    private Model3D Display3d(string mdl)
    {
        Model3D device = null;
        try
        {

            hlx.RotateGesture = new MouseGesture(MouseAction.LeftClick);


            ModelImporter import = new ModelImporter();


            device = import.Load(mdl);
        }
        catch (Exception e)
        {
            MessageBox.Show("Exception Error : " + e.StackTrace);
        }
        return device;
    }

工作得很好。问题是，我想把3D模型旋转360度，就像一个汽车展厅，但我不知道该怎么做。

Answer 1

您可以使用RotateManipulator控件，它允许用户在特定轴上旋转模型。

void C()
        {
            ModelVisual3D model = new ModelVisual3D();

            model.Content = Display3d(@"D:\tests for projects\Em organic compounds\Em organic compounds\Car.3DS");

            RotateManipulator manipulator = new RotateManipulator()
            {
                //rotate on X axis
                Axis = new Vector3D(1, 0, 0),
                Diameter = 5 //
            };
            Binding b = new Binding()
            {
                ElementName = nameof(model),
                Path = new PropertyPath("Transform")
            };
            BindingOperations.SetBinding(manipulator, RotateManipulator.TransformProperty, b);
            BindingOperations.SetBinding(manipulator, RotateManipulator.TargetTransformProperty, b);

            view1.Children.Add(manipulator);

            view1.Children.Add(model);

        }
        private Model3D Display3d(string mdl)
        {
            Model3D device = null;
            try
            {

                // view1.RotateGesture = new MouseGesture(MouseAction.LeftClick);
                ModelImporter import = new ModelImporter();


                device = import.Load(mdl);
            }
            catch (Exception e)
            {
                MessageBox.Show("Exception Error : " + e.StackTrace);
            }
            return device;
        }