这里我们先看例程源码：
1 <Window 2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 4 xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="WpfApplication1.MainWindow" 5 Title="MainWindow" Height="573.575" Width="611"> 6 <Grid> 7 <DockPanel> 8 <Viewport3D Name="myViewport"> 9 <Viewport3D.Camera> 10 <PerspectiveCamera FarPlaneDistance="20" LookDirection="5,-2,-3" UpDirection="0,1,0" NearPlaneDistance="0" Position="-5,2,3" FieldOfView="45" /> 11 </Viewport3D.Camera> 12 13 <ModelVisual3D x:Name="topModelVisual3D"> 14 <ModelVisual3D.Children> 15 <ModelVisual3D> 16 <ModelVisual3D.Content> 17 <DirectionalLight Color="White" Direction="-3,-4,-5" /> 18 </ModelVisual3D.Content> 19 </ModelVisual3D> 20 <ModelVisual3D> 21 <ModelVisual3D.Content> 22 <GeometryModel3D Geometry="{StaticResource myTeapot}"> 23 <GeometryModel3D.Material> 24 <DiffuseMaterial> 25 <DiffuseMaterial.Brush> 26 <SolidColorBrush Color="White" Opacity="1.0" /> 27 </DiffuseMaterial.Brush> 28 </DiffuseMaterial> 29 </GeometryModel3D.Material> 30 <GeometryModel3D.Transform> 31 <RotateTransform3D> 32 <RotateTransform3D.Rotation> 33 <AxisAngleRotation3D x:Name="myAngleRotation" Axis="0,10,0" Angle="1" /> 34 </RotateTransform3D.Rotation> 35 </RotateTransform3D> 36 </GeometryModel3D.Transform> 37 </GeometryModel3D> 38 </ModelVisual3D.Content> 39 </ModelVisual3D> 40 </ModelVisual3D.Children> 41 </ModelVisual3D> 42 43 <Viewport3D.Triggers> 44 <EventTrigger RoutedEvent="Viewport3D.Loaded"> 45 <BeginStoryboard> 46 <Storyboard> 47 <DoubleAnimation 48 Storyboard.TargetName="myAngleRotation" 49 Storyboard.TargetProperty="Angle" 50 From="0" To="360" Duration="0:0:5" 51 RepeatBehavior="Forever" /> 52 </Storyboard> 53 </BeginStoryboard> 54 </EventTrigger> 55 </Viewport3D.Triggers> 56 57 </Viewport3D> 58 </DockPanel> 59 </Grid> 60 </Window>