c# - WPF旋转按钮

Question

请帮帮我。我需要在不使用外部库的情况下为 z 轴上的按钮旋转设置动画，仅使用 C# 和 xaml 代码。

这可能吗？我该怎么做？

谢谢。

Answer 1

看看Viewport2DVisual3D

链接中的示例正是这样做的。

编辑:这是链接中添加了 Z 轴动画的示例

看起来像这样

<Viewport3D>
    <Viewport3D.Camera>
        <PerspectiveCamera Position="0, 0, 4"/>
    </Viewport3D.Camera>
    <Viewport2DVisual3D x:Name="v2dv3d">
        <Viewport2DVisual3D.Transform>
            <RotateTransform3D>
                <RotateTransform3D.Rotation>
                    <AxisAngleRotation3D Angle="0" Axis="0, 1, 0" />
                </RotateTransform3D.Rotation>
            </RotateTransform3D>
        </Viewport2DVisual3D.Transform>
        <Viewport2DVisual3D.Geometry>
            <MeshGeometry3D Positions="-1,1,0 -1,-1,0 1,-1,0 1,1,0"
                    TextureCoordinates="0,0 0,1 1,1 1,0" TriangleIndices="0 1 2 0 2 3"/>
        </Viewport2DVisual3D.Geometry>

        <Viewport2DVisual3D.Material>
            <DiffuseMaterial Viewport2DVisual3D.IsVisualHostMaterial="True" Brush="White"/>
        </Viewport2DVisual3D.Material>
        <Button Content="Hello, 3D">
            <Button.Triggers>
                <EventTrigger RoutedEvent="FrameworkElement.Loaded">
                    <BeginStoryboard>
                        <Storyboard RepeatBehavior="Forever">
                            <Rotation3DAnimation Storyboard.TargetName="v2dv3d"
                                                    Storyboard.TargetProperty="(Viewport2DVisual3D.Transform).(RotateTransform3D.Rotation)"
                                                    Duration="0:0:2"
                                                    BeginTime="0:0:0">
                                <Rotation3DAnimation.From>
                                    <AxisAngleRotation3D Angle="0" Axis="0, 1, 0" />
                                </Rotation3DAnimation.From>
                                <Rotation3DAnimation.To>
                                    <AxisAngleRotation3D Angle="90" Axis="0, 1, 0" />
                                </Rotation3DAnimation.To>
                            </Rotation3DAnimation>
                            <Rotation3DAnimation Storyboard.TargetName="v2dv3d"
                                                    Storyboard.TargetProperty="(Viewport2DVisual3D.Transform).(RotateTransform3D.Rotation)"
                                                    Duration="0:0:2"
                                                    BeginTime="0:0:2">
                                <Rotation3DAnimation.From>
                                    <AxisAngleRotation3D Angle="-90" Axis="0, 1, 0" />
                                </Rotation3DAnimation.From>
                                <Rotation3DAnimation.To>
                                    <AxisAngleRotation3D Angle="0" Axis="0, 1, 0" />
                                </Rotation3DAnimation.To>
                            </Rotation3DAnimation>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Button.Triggers>
        </Button>
    </Viewport2DVisual3D>
    <ModelVisual3D>
        <ModelVisual3D.Content>
            <DirectionalLight Color="#FFFFFFFF" Direction="0,0,-1"/>
        </ModelVisual3D.Content>
    </ModelVisual3D>
</Viewport3D>