将3D对象数据移动到单独的XAML文件中

Question

我有一个视图的XAML文件，其中定义了复杂的3D模型。问题是定义模型的部分非常大，它有0.5 MB以上的文件，并且很难浏览这个文件。有什么方法可以将Model3DGroup移动到另一个文件中，然后将其包含在我的主XAML文件中？我使用SketchUp to XAML转换器，它创建了以<Model3DGroup xmlns="..." xmlns:x="...">作为其根源的文件，因此我几乎可以确定它可以通过一种方便的方式完成。

我现在的XAML文件看起来像这样：

<UserControl x:Class="BigAtom.Views.WorkspaceView" 
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:TestProj" 
      mc:Ignorable="d" 
      d:DesignHeight="278" d:DesignWidth="274"> 

    <Grid x:Name="RootVisual" Background="Beige" ClipToBounds="True"> 
     <Canvas Name="DrawingCanvas" Grid.Row="0" Grid.Column="0" Width="0" Height="0" RenderTransform="1,0,0,-1,0,0" Margin="10"> 
      <Viewport3D Name="Object3D" Width="50" Height="50" Margin="-25,-25" ClipToBounds="False"> 
       <Viewport3D.Camera> 
        <OrthographicCamera x:Name="CamMain" Position="0 60 100" LookDirection="0 -60 -100"></OrthographicCamera> 
       </Viewport3D.Camera> 
       <ModelVisual3D> 
        <ModelVisual3D.Content> 
         <DirectionalLight x:Name="DirLightMain" Direction="-1,-1,-1"/> 
        </ModelVisual3D.Content> 
       </ModelVisual3D> 
       <ModelVisual3D x:Name="MyModel"> 
        <ModelVisual3D.Content> 
         <Model3DGroup> 
          <GeometryModel3D> 
           <GeometryModel3D.Geometry> 
            <MeshGeometry3D Positions="-5.6166 10.4050 153.1136 [very long line]" TextureCoordinates="-5.616612 -10.405044 -3.582495 [very long line]" TriangleIndices="164 17 57 [very long line]"/> 
           </GeometryModel3D.Geometry> 
           <GeometryModel3D.Material> 
            <DiffuseMaterial Color="White" Brush="#ffffff"/> 
           </GeometryModel3D.Material> 
           <GeometryModel3D.BackMaterial> 
            <DiffuseMaterial Color="White" Brush="White"/> 
           </GeometryModel3D.BackMaterial> 
          </GeometryModel3D> 
         </Model3DGroup> 
        </ModelVisual3D.Content> 
       </ModelVisual3D> 
      </Viewport3D> 
     </Canvas> 
    </Grid> 
</UserControl> 

，我想实现这样的事情：

<UserControl x:Class="BigAtom.Views.WorkspaceView" 
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:TestProj" 
      mc:Ignorable="d" 
      d:DesignHeight="278" d:DesignWidth="274"> 

    <Grid x:Name="RootVisual" Background="Beige" ClipToBounds="True"> 
     <Canvas Name="DrawingCanvas" Grid.Row="0" Grid.Column="0" Width="0" Height="0" RenderTransform="1,0,0,-1,0,0" Margin="10"> 
      <Viewport3D Name="Object3D" Width="50" Height="50" Margin="-25,-25" ClipToBounds="False"> 
       <Viewport3D.Camera> 
        <OrthographicCamera x:Name="CamMain" Position="0 60 100" LookDirection="0 -60 -100"></OrthographicCamera> 
       </Viewport3D.Camera> 
       <ModelVisual3D> 
        <ModelVisual3D.Content> 
         <DirectionalLight x:Name="DirLightMain" Direction="-1,-1,-1"/> 
        </ModelVisual3D.Content> 
       </ModelVisual3D> 
       <ModelVisual3D x:Name="MyModel"> 
        <ModelVisual3D.Content> 
         <Model3DGroup --- some kind of reference to the file which keeps the 3D model --- /> 
        </ModelVisual3D.Content> 
       </ModelVisual3D> 
      </Viewport3D> 
     </Canvas> 
    </Grid> 
</UserControl> 

@edit

McGarnagle的回答一般是OK，但在我的情况下，我也有一些DataTemplate定义在我的UserControl.Resources。正因为如此，我不得不创建这样的结构：

<UserControl.Resources> 
    <ResourceDictionary> 
     <DataTemplate DataType="{x:Type local:SomeType}" x:Key="SomeTypeTemplate"> 
      .... 
     </DataTemplate> 
     <ResourceDictionary.MergedDictionaries> 
      <ResourceDictionary Source="Models.xaml" /> 
     </ResourceDictionary.MergedDictionaries> 
    </ResourceDictionary> 
</UserControl.Resources> 

Answer 1

我想你应该能够为此使用资源字典。添加一个文件，说：“Models.xaml”与定义：

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"> 

    <Model3DGroup x:Key="TheModelContent"> 
     ... 
    </Model3DGroup> 
</ResourceDictionary> 

然后引用您的用户控件文件，并使用StaticResource关键字参考型号：

<UserControl> 
    <UserControl.Resources> 
     <ResourceDictionary> 
      <ResourceDictionary.MergedDictionaries> 
       <ResourceDictionary Source="Models.xaml" /> 
      </ResourceDictionary.MergedDictionaries> 

      <!-- other resources here --> 
     </ResourceDictionary> 
    </UserControl.Resources> 
    ... 

    <ModelVisual3D Content="{StaticResource TheModelContent}"> 
    ... 

</UserControl>