我想渲染一個貼有紋理的立方體。這是我的紋理：
不應使用帶有文本“Empty”的區域。
這是我的 Viewport3D：
<Viewport3D>
<Viewport3D.Camera>
<PerspectiveCamera FarPlaneDistance="100" LookDirection="22,-10,-10" UpDirection="0,1,0" NearPlaneDistance="1" Position="-20,15,15" FieldOfView="60"/>
</Viewport3D.Camera>
<Viewport3D.Children>
<ModelVisual3D>
<ModelVisual3D.Content>
<DirectionalLight Color="White" Direction="-2,-3,-1"/>
</ModelVisual3D.Content>
</ModelVisual3D>
<ModelVisual3D>
<ModelVisual3D.Content>
<DirectionalLight Color="White" Direction="2,3,1"/>
</ModelVisual3D.Content>
</ModelVisual3D>
<ModelVisual3D>
<ModelVisual3D.Content>
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
Positions="
0,0,0 8,0,0 0,8,0 8,8,0
0,0,0 0,0,8 0,8,0 0,8,8
0,0,0 8,0,0 0,0,8 8,0,8
8,0,0 8,8,8 8,0,8 8,8,0
0,0,8 8,0,8 0,8,8 8,8,8
0,8,0 0,8,8 8,8,0 8,8,8"
TriangleIndices="
0,2,1 1,2,3
4,5,6 6,5,7
8,9,10 9,11,10
12,13,14 12,15,13
16,17,18 19,18,17
20,21,22 22,21,23"
TextureCoordinates="
0.5,0 0,0.25 0.25,0 1,0.5
0.25,0.25 0,0.25 0.25,0 0,0 ">
</MeshGeometry3D>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png"/>
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
</GeometryModel3D>
</ModelVisual3D.Content>
</ModelVisual3D>
</Viewport3D.Children>
</Viewport3D>
結果：
首先，我想嘗試只獲得正面。我只顯示了第一個矩形。不幸的是，我無法選擇另一個矩形，它也被鏡像了。
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在這篇文章中
對于每張臉，我使用一個 ViewBox 來定義用于該臉的影像部分。這是源代碼（請注意，您可以使用滾動條旋轉影像并驗證所有側面是否正確）：
<DockPanel>
<ScrollBar Name="horz"
DockPanel.Dock="Bottom"
Orientation="Horizontal"
Minimum="-180"
Maximum="180"
LargeChange="10"
SmallChange="1" />
<ScrollBar Name="vert"
DockPanel.Dock="Right"
Orientation="Vertical"
Minimum="-180"
Maximum="180"
LargeChange="10"
SmallChange="1" />
<Viewport3D>
<Viewport3D.Camera>
<PerspectiveCamera Position="-2 2 4" LookDirection="2 -2 -4" FieldOfView="60" />
</Viewport3D.Camera>
<Viewport3D.Children>
<ModelVisual3D>
<ModelVisual3D.Content>
<Model3DGroup>
<AmbientLight Color="White" />
<!-- Unit cube: front -->
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
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"
TriangleIndices=" 0 2 1, 1 2 3"
TextureCoordinates="0 0, 1 0, 0 1, 1 1" />
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png" Viewbox="0.25,0.5,0.25,0.5" />
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
<GeometryModel3D.BackMaterial>
<DiffuseMaterial Brush="Black"/>
</GeometryModel3D.BackMaterial>
</GeometryModel3D>
<!-- Unit cube: back -->
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
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"
TriangleIndices=" 0 2 1, 1 2 3"
TextureCoordinates="0 0, 1 0, 0 1, 1 1"/>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png" Viewbox="0.75,0.5,0.25,0.5" />
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
<GeometryModel3D.BackMaterial>
<DiffuseMaterial Brush="Black"/>
</GeometryModel3D.BackMaterial>
</GeometryModel3D>
<!-- Unit cube: left -->
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
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"
TriangleIndices=" 0 2 1, 1 2 3"
TextureCoordinates="0 0, 1 0, 0 1, 1 1"/>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png" Viewbox="0,0.5,0.25,.5" />
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
<GeometryModel3D.BackMaterial>
<DiffuseMaterial Brush="Black"/>
</GeometryModel3D.BackMaterial>
</GeometryModel3D>
<!-- Unit cube: right -->
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
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"
TriangleIndices=" 0 2 1, 1 2 3"
TextureCoordinates="0 0, 1 0, 0 1, 1 1"/>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png" Viewbox="0.5,0.5,0.25,.5" />
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
<GeometryModel3D.BackMaterial>
<DiffuseMaterial Brush="Black"/>
</GeometryModel3D.BackMaterial>
</GeometryModel3D>
<!-- Unit cube: top -->
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
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"
TriangleIndices=" 0 2 1, 1 2 3"
TextureCoordinates="0 0, 1 0, 0 1, 1 1"/>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png" Viewbox="0.25,0.0,0.25,.5" />
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
<GeometryModel3D.BackMaterial>
<DiffuseMaterial Brush="Black"/>
</GeometryModel3D.BackMaterial>
</GeometryModel3D>
<!-- Unit cube: bottom. -->
<GeometryModel3D>
<GeometryModel3D.Geometry>
<MeshGeometry3D
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"
TriangleIndices=" 0 2 1, 1 2 3"
TextureCoordinates="0 0, 1 0, 0 1, 1 1"/>
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="cube.png" Viewbox="0.5,0.0,0.25,.5" />
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</GeometryModel3D.Material>
<GeometryModel3D.BackMaterial>
<DiffuseMaterial Brush="Black"/>
</GeometryModel3D.BackMaterial>
</GeometryModel3D>
</Model3DGroup>
</ModelVisual3D.Content>
<ModelVisual3D.Transform>
<Transform3DGroup>
<RotateTransform3D>
<RotateTransform3D.Rotation>
<AxisAngleRotation3D Axis="0 1 0" Angle="{Binding ElementName=horz, Path=Value}" />
</RotateTransform3D.Rotation>
</RotateTransform3D>
<RotateTransform3D>
<RotateTransform3D.Rotation>
<AxisAngleRotation3D Axis="1 0 0" Angle="{Binding ElementName=vert, Path=Value}" />
</RotateTransform3D.Rotation>
</RotateTransform3D>
</Transform3DGroup>
</ModelVisual3D.Transform>
</ModelVisual3D>
</Viewport3D.Children>
</Viewport3D>
</DockPanel>
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