3D模型動畫

<Window x:Class="_3D繪圖_1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Grid.Triggers>
            <EventTrigger RoutedEvent="Window.Loaded">
                <BeginStoryboard>
                    <Storyboard x:Name="mySB">
                        <DoubleAnimation 
                            Storyboard.TargetName="myAxiRot2"
                            Storyboard.TargetProperty="Angle"
                            From="0"
                            To="360"
                            RepeatBehavior="Forever"
                            AutoReverse="True" 
                            Duration="0:0:5"
                            />
                        <DoubleAnimation 
                            Storyboard.TargetName="myAxiRot1"
                            Storyboard.TargetProperty="Angle"
                            From="0"
                            To="360"
                            RepeatBehavior="Forever"
                            AutoReverse="True" 
                            Duration="0:0:5"
                            />
                        <Point3DAnimation 
                            Storyboard.TargetName="myCamera"
                            Storyboard.TargetProperty="Position"
                            From="0,0,-5"
                            To="0,0,-10"
                            AutoReverse="True" 
                            RepeatBehavior="Forever"
                            Duration="0:0:2"
                            />
                    </Storyboard>
                </BeginStoryboard>
            </EventTrigger>
        </Grid.Triggers>
        <Viewport3D>
            <!--定義照相機           
                Position: 照相機的位置
                LookDirection: 通過照相機看模型的方向
                UpDirection: 照相機的法向量
                -->
            <Viewport3D.Camera>
                <PerspectiveCamera 
                    x:Name="myCamera"
                    Position="0,0,-5"
                    LookDirection="0,0,5"
                    UpDirection="0,1,0"
                    />
            </Viewport3D.Camera>

            <!--定義模型-->
            <ModelVisual3D x:Name="myModelVisual3D">

                <ModelVisual3D.Transform>
                    <Transform3DGroup>
                        <!--定義一個繞Y軸旋轉的Transform-->
                        <RotateTransform3D>
                            <RotateTransform3D.Rotation>
                                <AxisAngleRotation3D
                                x:Name="myAxiRot1" 
                                Axis="0,1,0"
                                Angle="0"
                                />
                            </RotateTransform3D.Rotation>

                        </RotateTransform3D>
                        <!--定義一個繞X軸旋轉的Transform-->
                        <RotateTransform3D>
                            <RotateTransform3D.Rotation>
                                <AxisAngleRotation3D
                                x:Name="myAxiRot2" 
                                Axis="1,0,0"
                                Angle="0"
                                />
                            </RotateTransform3D.Rotation>
                        </RotateTransform3D>
                    </Transform3DGroup>
                </ModelVisual3D.Transform>
                <!--定義內容-->
                <ModelVisual3D>
                    <ModelVisual3D.Content>
                        <GeometryModel3D Geometry="{StaticResource myTeaPot}">
                            <!--設置模型材質後模型纔會顯示出來-->
                            <GeometryModel3D.Material >
                                <DiffuseMaterial>
                                    <DiffuseMaterial.Brush>
                                        <!--使用漸變色：從左上角到右下角打一束藍色變到紅色的光-->
                                        <LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
                                            <GradientStop Color="Blue" Offset="0"/>
                                            <GradientStop Color="Red" Offset="2"/>
                                        </LinearGradientBrush>
                                        <!--<SolidColorBrush Color="Blue" Opacity="1.0"/>-->
                                    </DiffuseMaterial.Brush>
                                </DiffuseMaterial>
                            </GeometryModel3D.Material>
                        </GeometryModel3D>
                    </ModelVisual3D.Content>
                </ModelVisual3D>
                <!--定義光源-->
                <ModelVisual3D>
                    <ModelVisual3D.Content>
                        <DirectionalLight 
                            Color="Yellow"  
                            Direction="0,0,1 "
                            />
                    </ModelVisual3D.Content>
                </ModelVisual3D>
            </ModelVisual3D>
        </Viewport3D>
    </Grid>
</Window>

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