Nasıl yapılır: 3B nesnenin ön ve arkasına malzeme uygulama

Aşağıdaki örnek, bir Material 3B nesnenin ön ve arkasına nasıl uygulanacağını gösterir ve nesnenin her iki tarafını da göstermek için nesneye animasyon uygular. MaterialÖğesinin özelliği GeometryModel3D nesnenin ön tarafına kırmızı uygulamak için kullanılır Brush ve BackMaterial öğesinin özelliği GeometryModel3DBrush nesnenin arka tarafına mavi bir şekilde uygulamak için kullanılır. Aşağıdaki kod, malzemenin nesnesine ait uygulamayı gösterir:

<!-- This material is applied to the front of the 3D object (red side).-->
<GeometryModel3D.Material>
  <MaterialGroup>
    <DiffuseMaterial>
      <DiffuseMaterial.Brush>
        <SolidColorBrush Color="Red"/>
      </DiffuseMaterial.Brush>
    </DiffuseMaterial>
  </MaterialGroup>
</GeometryModel3D.Material>

<!-- This material is applied to the back of the 3D object (blue side).-->
<GeometryModel3D.BackMaterial>
  <MaterialGroup>
    <DiffuseMaterial>
      <DiffuseMaterial.Brush>
        <SolidColorBrush Color="Blue"/>
      </DiffuseMaterial.Brush>
    </DiffuseMaterial>
  </MaterialGroup>
</GeometryModel3D.BackMaterial>

Örnek

Aşağıdaki kod, tüm örneği gösterir.

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
  <DockPanel>
    <Viewbox>
      <Canvas Width="321" Height="201">

        <!-- The Viewport3D provides a rendering surface for 3-D visual content. -->
        <Viewport3D Name="MyAnimatedObject"
          ClipToBounds="True" Width="150" Height="150"
          Canvas.Left="0" Canvas.Top="10">

          <!-- Defines the camera used to view the 3D object. -->
          <Viewport3D.Camera>
            <PerspectiveCamera x:Name="myPerspectiveCamera" Position="0,0,2" LookDirection="0,0,-1" 
             FieldOfView="60" />
          </Viewport3D.Camera>

          <!-- The ModelVisual3D children contain the 3D models -->
          <Viewport3D.Children>

            <!-- Two ModelVisual3D define the lights cast in the scene. Without light, the
                 3D object cannot be seen. Also, the direction of the lights affect shadowing. -->
            <ModelVisual3D>
              <ModelVisual3D.Content>
                <DirectionalLight Color="#FFFFFF" Direction="-0.612372,-0.5,-0.612372" />
              </ModelVisual3D.Content>
            </ModelVisual3D>
            <ModelVisual3D>
              <ModelVisual3D.Content>
                <DirectionalLight Color="#FFFFFF" Direction="0.612372,-0.5,-0.612372" />
              </ModelVisual3D.Content>
            </ModelVisual3D>
            <ModelVisual3D>
              <ModelVisual3D.Content>
                <GeometryModel3D>

                  <!-- The geometry specifes the shape of the 3D plane. In this case, a flat sheet is created. -->
                  <GeometryModel3D.Geometry>
                    <MeshGeometry3D
                     TriangleIndices="0,1,2 3,4,5 "
                     Normals="0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 0,0,1 "
                     TextureCoordinates="0,0 1,0 1,1 1,1 0,1 0,0 "
                     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 " />
                  </GeometryModel3D.Geometry>
                  <!-- This material is applied to the front of the 3D object (red side).-->
                  <GeometryModel3D.Material>
                    <MaterialGroup>
                      <DiffuseMaterial>
                        <DiffuseMaterial.Brush>
                          <SolidColorBrush Color="Red"/>
                        </DiffuseMaterial.Brush>
                      </DiffuseMaterial>
                    </MaterialGroup>
                  </GeometryModel3D.Material>

                  <!-- This material is applied to the back of the 3D object (blue side).-->
                  <GeometryModel3D.BackMaterial>
                    <MaterialGroup>
                      <DiffuseMaterial>
                        <DiffuseMaterial.Brush>
                          <SolidColorBrush Color="Blue"/>
                        </DiffuseMaterial.Brush>
                      </DiffuseMaterial>
                    </MaterialGroup>
                  </GeometryModel3D.BackMaterial>
                  <!-- The Transform specifies how to transform the 3D object. The properties of the
                        Rotation object are animated causing the 3D object to rotate (see Storyboard below).-->
                  <GeometryModel3D.Transform>
                    <RotateTransform3D>
                      <RotateTransform3D.Rotation>
                        <AxisAngleRotation3D x:Name="myAngleRotation" Axis="0,3,0" Angle="40" />
                      </RotateTransform3D.Rotation>
                    </RotateTransform3D>
                  </GeometryModel3D.Transform>
                </GeometryModel3D>
              </ModelVisual3D.Content>
            </ModelVisual3D>
          </Viewport3D.Children>

          <!-- Trigger the rotation animation when the 3D object loads. This animation is used to show
               both sides of the 3D object. -->
          <Viewport3D.Triggers>
            <EventTrigger RoutedEvent="Viewport3D.Loaded">
              <BeginStoryboard>
                <Storyboard>

                  <!-- This animation animates the Angle property of the AxisAngleRotation3D
                       making the 3D object rotate from -0 degrees to 360 degrees. -->
                  <DoubleAnimation 
                   Storyboard.TargetName="myAngleRotation" 
                   Storyboard.TargetProperty="Angle" 
                   From="0" To="360" Duration="0:0:4" AutoReverse="True"  RepeatBehavior="Forever"/>

                </Storyboard>
              </BeginStoryboard>
            </EventTrigger>
          </Viewport3D.Triggers>
        </Viewport3D>
      </Canvas>
    </Viewbox>
  </DockPanel>
</Page>

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