wpf上的图片问题

Question

为什么这里面的图片都是透明的，只显示一种颜色，什么问题？大神求解。废话不多说了，贴上控件的源码。<UserControl x:Class="WPF111.Rectange"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/up-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="UserControl.Loaded" >
            <EventTrigger.Actions>
                <BeginStoryboard>
                    <Storyboard>
                        <ParallelTimeline RepeatBehavior="Forever"  Storyboard.TargetName="myRotate" Storyboard.TargetProperty="Angle" >
                            <DoubleAnimation From="0" To="360" Duration="0:0:30" RepeatBehavior="Forever"/>
                        </ParallelTimeline>
                        <ParallelTimeline RepeatBehavior="Forever"  Storyboard.TargetName="myRotate2" Storyboard.TargetProperty="Angle" >
                            <DoubleAnimation From="0" To="360" Duration="0:0:30" RepeatBehavior="Forever"/>
                        </ParallelTimeline>
                        <ParallelTimeline RepeatBehavior="Forever"  Storyboard.TargetName="myScale" Storyboard.TargetProperty="ScaleX" >
                            <DoubleAnimation From="0.5" To="1.5" Duration="0:0:10" AutoReverse="True" RepeatBehavior="Forever"/>
                        </ParallelTimeline>
                        <ParallelTimeline RepeatBehavior="Forever"  Storyboard.TargetName="myScale" Storyboard.TargetProperty="ScaleY" >
                            <DoubleAnimation From="0.5" To="1.5" Duration="0:0:10" AutoReverse="True" RepeatBehavior="Forever"/>
                        </ParallelTimeline>
                        <ParallelTimeline RepeatBehavior="Forever"  Storyboard.TargetName="myScale" Storyboard.TargetProperty="ScaleZ" >
                            <DoubleAnimation From="0.5" To="1.5" Duration="0:0:10" AutoReverse="True" RepeatBehavior="Forever"/>
                        </ParallelTimeline>
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger.Actions>
        </EventTrigger>
    </UserControl.Triggers>
    <UserControl.Resources>
        <Storyboard x:Key="RotateStoryboard">
            <ParallelTimeline RepeatBehavior="Forever"  Storyboard.TargetName="myRotate" Storyboard.TargetProperty="Angle" >
                <DoubleAnimation From="0" To="360" Duration="0:0:30"/>
            </ParallelTimeline>
        </Storyboard>        <MeshGeometry3D x:Key="PlaneMesh"
            Positions="-1 -1 0  1 -1 0  -1 1 0  1 1 0"
            Normals="0 0 1  0 0 1  0 0 1  0 0 1"
            TextureCoordinates="0 1  1 1  0 0  1 0   "
            TriangleIndices="0 1 2  1 3 2" />        <MeshGeometry3D x:Key="CubeMesh"
      TriangleIndices="0,1,2 3,4,5 6,7,8 9,10,11 12,13,14 15,16,17 18,19,20 21,22,23 24,25,26 27,28,29 30,31,32 33,34,35 "
      Normals="0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,-1,0 0,-1,0 0,-1,0 0,-1,0 0,-1,0 0,-1,0 1,0,0 1,0,0 1,0,0 1,0,0 1,0,0 1,0,0 0,1,0 0,1,0 0,1,0 0,1,0 0,1,0 0,1,0 -1,0,0 -1,0,0 -1,0,0 -1,0,0 -1,0,0 -1,0,0 "
      TextureCoordinates="1,0 1,1 0,1 0,1 0,0 1,0 0,0 1,0 1,1 1,1 0,1 0,0 0,0 1,0 1,1 1,1 0,1 0,0 1,0 1,1 0,1 0,1 0,0 1,0 1,1 0,1 0,0 0,0 1,0 1,1 0,1 0,0 1,0 1,0 1,1 0,1 "
      Positions="-0.5,-0.5,-0.5 -0.5,0.5,-0.5 0.5,0.5,-0.5 0.5,0.5,-0.5 0.5,-0.5,-0.5 -0.5,-0.5,-0.5 -0.5,-0.5,0.5 0.5,-0.5,0.5 0.5,0.5,0.5 0.5,0.5,0.5 -0.5,0.5,0.5 -0.5,-0.5,0.5 -0.5,-0.5,-0.5 0.5,-0.5,-0.5 0.5,-0.5,0.5 0.5,-0.5,0.5 -0.5,-0.5,0.5 -0.5,-0.5,-0.5 0.5,-0.5,-0.5 0.5,0.5,-0.5 0.5,0.5,0.5 0.5,0.5,0.5 0.5,-0.5,0.5 0.5,-0.5,-0.5 0.5,0.5,-0.5 -0.5,0.5,-0.5 -0.5,0.5,0.5 -0.5,0.5,0.5 0.5,0.5,0.5 0.5,0.5,-0.5 -0.5,0.5,-0.5 -0.5,-0.5,-0.5 -0.5,-0.5,0.5 -0.5,-0.5,0.5 -0.5,0.5,0.5 -0.5,0.5,-0.5 "
/>        <MeshGeometry3D x:Key="CubeInvertedMesh"
      TriangleIndices="0,1,2 3,4,5 6,7,8 9,10,11 12,13,14 15,16,17 18,19,20 21,22,23 24,25,26 27,28,29 30,31,32 33,34,35 "
      Normals="0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,1,0 0,1,0 0,1,0 0,1,0 0,1,0 0,1,0 -1,0,0 -1,0,0 -1,0,0 -1,0,0 -1,0,0 -1,0,0 0,-1,0 0,-1,0 0,-1,0 0,-1,0 0,-1,0 0,-1,0 1,0,0 1,0,0 1,0,0 1,0,0 1,0,0 1,0,0 "
      TextureCoordinates="0,1 1,1 1,0 1,0 0,0 0,1 1,1 1,0 0,0 0,0 0,1 1,1 1,1 1,0 0,0 0,0 0,1 1,1 0,1 1,1 1,0 1,0 0,0 0,1 0,0 0,1 1,1 1,1 1,0 0,0 1,0 0,0 0,1 0,1 1,1 1,0 "
      Positions="0.5,0.5,-0.5 -0.5,0.5,-0.5 -0.5,-0.5,-0.5 -0.5,-0.5,-0.5 0.5,-0.5,-0.5 0.5,0.5,-0.5 0.5,0.5,0.5 0.5,-0.5,0.5 -0.5,-0.5,0.5 -0.5,-0.5,0.5 -0.5,0.5,0.5 0.5,0.5,0.5 0.5,-0.5,0.5 0.5,-0.5,-0.5 -0.5,-0.5,-0.5 -0.5,-0.5,-0.5 -0.5,-0.5,0.5 0.5,-0.5,0.5 0.5,0.5,0.5 0.5,0.5,-0.5 0.5,-0.5,-0.5 0.5,-0.5,-0.5 0.5,-0.5,0.5 0.5,0.5,0.5 -0.5,0.5,0.5 -0.5,0.5,-0.5 0.5,0.5,-0.5 0.5,0.5,-0.5 0.5,0.5,0.5 -0.5,0.5,0.5 -0.5,-0.5,0.5 -0.5,-0.5,-0.5 -0.5,0.5,-0.5 -0.5,0.5,-0.5 -0.5,0.5,0.5 -0.5,-0.5,0.5 "
/>        <Transform3DGroup x:Key="CubeMeshTransform">
            <Transform3DGroup.Children>
                <ScaleTransform3D ScaleX="10" ScaleY="10" ScaleZ="10" />
            </Transform3DGroup.Children>
        </Transform3DGroup>        <Transform3DGroup x:Key="CubeMeshTransform2">
            <Transform3DGroup.Children>
                <ScaleTransform3D ScaleX="12" ScaleY="12" ScaleZ="12" />
            </Transform3DGroup.Children>
        </Transform3DGroup>
    </UserControl.Resources>    <DockPanel>
        <DockPanel.Background>
            <LinearGradientBrush StartPoint="0 0" EndPoint="0 1">
                <GradientStop Color="Black" Offset="0" />
                <GradientStop Color="Black"  Offset="1" />
            </LinearGradientBrush>
        </DockPanel.Background>        <DockPanel>
            <Viewport3D Focusable="True" Name="myViewport3D" ClipToBounds="True" >
                <Viewport3D.Camera>
                    <PerspectiveCamera
          Position="0,0,3.0"
          LookDirection="0,0,-1"
          UpDirection="0,1,0"
          NearPlaneDistance="0.25"
          FarPlaneDistance="20"
          FieldOfView="60" />
                </Viewport3D.Camera>                <ModelVisual3D>
                    <ModelVisual3D.Transform>
                        <Transform3DGroup>
                            <Transform3DGroup.Children>
                                <Transform3DCollection >
                                    <ScaleTransform3D ScaleX="1" ScaleY="1"  ScaleZ="1" />
                                    <RotateTransform3D>
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Axis="0 1 0" Angle="0" />
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <TranslateTransform3D OffsetX="0" OffsetY="0" OffsetZ="0" />
                                </Transform3DCollection>
                            </Transform3DGroup.Children>
                        </Transform3DGroup>
                    </ModelVisual3D.Transform>
                    <ModelVisual3D.Content>
                     wpf图片3d

Answer 1

<--贴不下了，继续!-->
   <Model3DGroup >
                            <Model3DGroup.Transform>
                                <Transform3DGroup>
                                    <Transform3DGroup.Children>
                                        <Transform3DCollection >
                                            <ScaleTransform3D ScaleX="0.1" ScaleY="0.1"  ScaleZ="0.1" />
                                            <RotateTransform3D>
                                                <RotateTransform3D.Rotation>
                                                    <AxisAngleRotation3D Axis="0 1 0" Angle="0" />
                                                </RotateTransform3D.Rotation>
                                            </RotateTransform3D>
                                            <TranslateTransform3D OffsetX="0" OffsetY="0" OffsetZ="0" />
                                        </Transform3DCollection>
                                    </Transform3DGroup.Children>
                                </Transform3DGroup>
                            </Model3DGroup.Transform>
                            <Model3DGroup.Children>                                <!--Group Child 0-->                                <Model3DGroup >
                                    <Model3DGroup.Transform>
                                        <Transform3DGroup>
                                            <Transform3DGroup.Children>
                                                <Transform3DCollection >
                                                    <ScaleTransform3D x:Name="myScale" ScaleX="0.5" ScaleY="0.5"  ScaleZ="0.5" />
                                                    <RotateTransform3D >
                                                        <RotateTransform3D.Rotation >
                                                            <AxisAngleRotation3D x:Name="myRotate" Axis="1 0 0" Angle="0" />
                                                        </RotateTransform3D.Rotation>
                                                    </RotateTransform3D>
                                                    <RotateTransform3D >
                                                        <RotateTransform3D.Rotation >
                                                            <AxisAngleRotation3D x:Name="myRotate2" Axis="0 1 0" Angle="0" />
                                                        </RotateTransform3D.Rotation>
                                                    </RotateTransform3D>
                                                    <TranslateTransform3D OffsetX="0" OffsetY="0" OffsetZ="0" />
                                                </Transform3DCollection>
                                            </Transform3DGroup.Children>
                                        </Transform3DGroup>
                                    </Model3DGroup.Transform>                                    <Model3DGroup.Children>                                        <!--Child 0-->
                                        <GeometryModel3D Transform="{StaticResource CubeMeshTransform}" Geometry="{StaticResource CubeMesh}" >
                                            <GeometryModel3D.Material>
                                                <MaterialGroup>
                                                    <MaterialGroup.Children>
                                                        <EmissiveMaterial>
                                                            <EmissiveMaterial.Brush>
                                                                <ImageBrush ImageSource="Images\1.jpg">
                                                                    <ImageBrush.Transform>
                                                                        <TransformGroup>
                                                                            <TransformGroup.Children>
                                                                                <RotateTransform CenterX="0.5" CenterY="0.5" Angle="0" />
                                                                            </TransformGroup.Children>
                                                                        </TransformGroup>
                                                                    </ImageBrush.Transform>
                                                                </ImageBrush>
                                                            </EmissiveMaterial.Brush>
                                                        </EmissiveMaterial>
                                                    </MaterialGroup.Children>
                                                </MaterialGroup>
                                            </GeometryModel3D.Material>                                            <GeometryModel3D.BackMaterial>
                                                <MaterialGroup>
                                                    <MaterialGroup.Children>
                                                        <EmissiveMaterial>
                                                            <EmissiveMaterial.Brush>
                                                                <ImageBrush ImageSource="Images\2.jpg">
                                                                    <ImageBrush.Transform>
                                                                        <TransformGroup>
                                                                            <TransformGroup.Children>
                                                                                <RotateTransform CenterX="0.5" CenterY="0.5" Angle="0" />
                                                                            </TransformGroup.Children>
                                                                        </TransformGroup>
                                                                    </ImageBrush.Transform>
                                                                </ImageBrush>
                                                            </EmissiveMaterial.Brush>
                                                        </EmissiveMaterial>
                                                    </MaterialGroup.Children>
                                                </MaterialGroup>
                                            </GeometryModel3D.BackMaterial>
                                        </GeometryModel3D>                                        <GeometryModel3D Transform="{StaticResource CubeMeshTransform2}" Geometry="{StaticResource CubeMesh}" >
                                            <GeometryModel3D.Material>
                                                <MaterialGroup>
                                                    <MaterialGroup.Children>
                                                        <EmissiveMaterial>
                                                            <EmissiveMaterial.Brush>
                                                                <ImageBrush ImageSource="Images\3.png">
                                                                    <ImageBrush.Transform>
                                                                        <TransformGroup>
                                                                            <TransformGroup.Children>
                                                                                <RotateTransform CenterX="0.5" CenterY="0.5" Angle="0" />
                                                                            </TransformGroup.Children>
                                                                        </TransformGroup>
                                                                        </ImageBrush.Transform>
                                                                    </ImageBrush>
                                                            </EmissiveMaterial.Brush>
                                                        </EmissiveMaterial>
                                                    </MaterialGroup.Children>
                                                </MaterialGroup>
                                            </GeometryModel3D.Material>                                            <GeometryModel3D.BackMaterial>
                                                <MaterialGroup>
                                                    <MaterialGroup.Children>
                                                        <EmissiveMaterial>
                                                            <EmissiveMaterial.Brush>
                                                                <ImageBrush ImageSource="Images\4.jpg">
                                                                    <ImageBrush.Transform>
                                                                        <TransformGroup>
                                                                            

Answer 2

<TransformGroup.Children>
                                                                                <RotateTransform CenterX="0.5" CenterY="0.5" Angle="0" />
                                                                            </TransformGroup.Children>
                                                                        </TransformGroup>
                                                                    </ImageBrush.Transform>
                                                                </ImageBrush>
                                                            </EmissiveMaterial.Brush>
                                                        </EmissiveMaterial>
                                                    </MaterialGroup.Children>
                                                </MaterialGroup>
                                            </GeometryModel3D.BackMaterial>
                                        </GeometryModel3D>
                                    </Model3DGroup.Children>
                                </Model3DGroup>
                                <Model3DGroup>
                                    <Model3DGroup.Children>
                                        <AmbientLight Color="#ffcccccc"/>
                                        <DirectionalLight Color="LightGray" Direction="-1,-1,-1" />
                                    </Model3DGroup.Children>
                                </Model3DGroup>
                            </Model3DGroup.Children>
                        </Model3DGroup>
                    </ModelVisual3D.Content>
                </ModelVisual3D>
            </Viewport3D>
        </DockPanel>
    </DockPanel>
</UserControl>

Answer 3

  三楼是高手啊，要不我把控件的xaml文件附上来。三楼运行一下看看。