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WPF 3D穿梭效果,用WPF也凑凑热闹

ARM830 2022-02-21 13:58:11 WPF 20
相对CSS和UWP,老牌的WPF对于3D效果的操作是相对繁琐的。 要首先做出3D模型,接着旋转XY轴,其次调整Z轴拉伸,最后一步调整FOV。 穿梭效果要靠这Z轴拉伸的数字决定

CSS 效果博客地址:

3D 穿梭效果?使用 CSS 轻松搞定 - ChokCoco - 博客园 (cnblogs.com)

UWP效果博客地址

3D 穿梭效果?使用 UWP 也能搞定 - dino.c - 博客园 (cnblogs.com)

大佬们真实登峰造极啊。

真是能学到很多东西啊。

我也就凑凑热闹,用WPF来试试,效果不算太好,勉强过得去吧。

相对CSS和UWP,老牌的WPF对于3D效果的操作是相对繁琐的。 要首先做出3D模型,接着旋转XY轴,其次调整Z轴拉伸,最后一步调整FOV。 穿梭效果要靠这Z轴拉伸的数字决定,图中是10-20。

当然最难的是动画的首尾衔接。

我们来一步一步的做。

制作3D模型

这一块可以直接用不用2D控件其实没啥可以研究,所以就直接是3D模型,让图片以贴图的形式存在。

至于3D模型制作,总结一点就是由左到右开始。

  1. Positions

3D模型是三角组成,所以描述一个物体的样子时候,尽可能画三角形。每个点就是顶点,如果存在相同的顶点,选择一个就行。

描述顶点的时候是XYZ,当你正面看物体,物体的Z轴是指向你的方向为正方向。Y轴是向上为正,X轴是向右为正。

这里值得注意的是,为了方便 ,建议使用左 左下 右下 右上的顺序去定义点。

这个模型的顶点定义就是 P1(x,y,z), P2(x,y,z) ,P3(x,y,z) ,P4(x,y,z)

  1. TriangleIndices

这个就是 描述 这些顶点是如何组成三角形。当我们认为一个面是正面时,要记得逆时针定义顶点集合下标。顶点集合就是Positions,内容就是你输入的坐标点,下标由0开始。

背面为顺时针。

  1. TextureCoordinates

这个是材质的定位顺序,这个比较2D坐标系,和其他的不同。也就是左上角为0,0 右下角为1,1,也就是普通的屏幕坐标系

做好模型,要做四个哦。

旋转3d模型

这个就比较有意思了,上面模型做好了四个,我们要组成四个面,也就是旋转Y轴,旋转X轴,但是方向是不一样的。旋转我们使用Transform就可以了。

看起来还行。

我们来做四个图片并试试。

方便调试,我们带着进度条。

资源

  <MeshGeometry3D x:Key="Rect3D_O">
    <MeshGeometry3D.Positions>
        -50,  50, 0,
        -50, -50, 0,
        50, -50, 0,
        50,  50, 0
    </MeshGeometry3D.Positions>
    <MeshGeometry3D.TriangleIndices>
        0 1 2 2 3 0
    </MeshGeometry3D.TriangleIndices>
    <MeshGeometry3D.TextureCoordinates>
        0,0 0,1 1,1 1,0
    </MeshGeometry3D.TextureCoordinates>
    <MeshGeometry3D.Normals>
        0,0,1,
        0,0,1,
        0,0,1, 
        0,0,1
    </MeshGeometry3D.Normals>
</MeshGeometry3D>
<DiffuseMaterial  x:Key="Img">
    <DiffuseMaterial.Brush>
        <ImageBrush ImageSource="start.jpg" />
    </DiffuseMaterial.Brush>
</DiffuseMaterial>
 <Viewport3D  x:Name="View3D_2"    >
            <Viewport3D.Camera>
                <PerspectiveCamera   FieldOfView="{Binding ElementName=FOV, Path=Value}" Position="0,0,100" LookDirection="0,0,-1"/>
            </Viewport3D.Camera>
            <ModelVisual3D>
                <ModelVisual3D.Content>
                    <Model3DGroup>
                        <AmbientLight Color="White"/>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Left_Top_Z, Path=Value}" Axis="0 1 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Left_Top_Z, Path=Value}" Axis="1 0 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Right_Bottom_Z, Path=Value}" Axis="0 1 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Right_Bottom_Z, Path=Value}" Axis="1 0 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                    </Model3DGroup>
                </ModelVisual3D.Content>
            </ModelVisual3D>
        </Viewport3D>
      
        <Slider   Grid.Row="1" x:Name="Left_Top_Z" Minimum="-90" Value="12"  Maximum="90" ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>
        <Slider   Grid.Row="2" x:Name="Right_Bottom_Z" Minimum="-90"  Value="-12" Maximum="0"  ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>
        <Slider   Grid.Row="3" x:Name="ScaleZ_2" Background="Red" Minimum="10"  Maximum="100"  ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}">
            <Slider.Style >
                <Style TargetType="Slider">
                    <Style.Triggers>
                        <Trigger Property="Tag" Value="1">
                            <Trigger.EnterActions>
                                <BeginStoryboard >
                                    <Storyboard>
                                        <DoubleAnimation  RepeatBehavior="Forever"  Storyboard.TargetProperty="Value"   From="11" To="20" BeginTime="0:0:0"   Duration="0:0:10" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.EnterActions>
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </Slider.Style>
        </Slider>
        <Slider   Grid.Row="4" x:Name="FOV" Minimum="0"  Maximum="180" Value="176" ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>

运行,看看

看起来,有点味道了。

剩下就是调试动画了。

我们想要首尾衔接的动画,实际上就是要两段动画看不出首尾的区别。参考大佬们的基本思路,依靠透明度,延迟播放让首尾看不出区别。

也就是说要

这里呢,我们纯用XAML来实现这个方案。

首先要解决定时问题,首先页面加载时,我们通过动画修改某个对象的某个值 ,这个对象上存在一个触发器,监控这个对象并开始定时,之后播放动画。

修改值,我们要用ObjectAnimationUsingKeyFrames动画。

触发器,数值触发器,因为可以绑定。

整个过程中,最重要的就是时间线,两组动画再何时出现,何时隐藏。

最终代码

    <Window.Resources>
        <Storyboard  RepeatBehavior="Forever"  Storyboard.TargetName="ScaleZ_2"  Duration="0:0:10"  x:Key="sb" >
            <DoubleAnimation Storyboard.TargetName="ScaleZ_2" Storyboard.TargetProperty="Value"  From="11" To="20"     BeginTime="0:0:0"  Duration="0:0:10" />
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity" Storyboard.TargetName="View3D_2"   BeginTime="0:0:0" >
                <LinearDoubleKeyFrame KeyTime="0:0:0" Value="0"/>
                <LinearDoubleKeyFrame KeyTime="0:0:2" Value="1"/>
                <LinearDoubleKeyFrame KeyTime="0:0:6" Value="1"/>
                <LinearDoubleKeyFrame KeyTime="0:0:10" Value="0"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>                                                                                                          
        <MeshGeometry3D x:Key="Rect3D_O">
            <MeshGeometry3D.Positions>
                -50,  50, 0,
              -50, -50, 0,
               50, -50, 0,
               50,  50, 0
            </MeshGeometry3D.Positions>
            <MeshGeometry3D.TriangleIndices>
                0 1 2 2 3 0
            </MeshGeometry3D.TriangleIndices>
            <MeshGeometry3D.TextureCoordinates>
                0,0 0,1 1,1 1,0
            </MeshGeometry3D.TextureCoordinates>
            <MeshGeometry3D.Normals>
                0,0,1,
                0,0,1,
                0,0,1, 
                0,0,1
            </MeshGeometry3D.Normals>
        </MeshGeometry3D>
        <DiffuseMaterial  x:Key="Img">
            <DiffuseMaterial.Brush>
                <ImageBrush ImageSource="start.jpg" />
            </DiffuseMaterial.Brush>
        </DiffuseMaterial>
    </Window.Resources>
    <Window.Triggers>
        <EventTrigger RoutedEvent="Loaded" SourceName="ScaleZ">
            <BeginStoryboard>
                <Storyboard Storyboard.TargetName="ScaleZ" Storyboard.TargetProperty="Tag"     Duration="0:0:5.1" >
                    <ObjectAnimationUsingKeyFrames>
                        <DiscreteObjectKeyFrame KeyTime="0:0:5" >
                            <DiscreteObjectKeyFrame.Value>
                                1
                            </DiscreteObjectKeyFrame.Value>
                        </DiscreteObjectKeyFrame>
                    </ObjectAnimationUsingKeyFrames>
                </Storyboard>
            </BeginStoryboard>
            <BeginStoryboard Storyboard="{StaticResource sb}"/>
        </EventTrigger>
    </Window.Triggers>
    <Grid >
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition  Height="auto"/>
            <RowDefinition  Height="auto"/>
            <RowDefinition  Height="auto"/>
            <RowDefinition  Height="auto"/>
            <RowDefinition  Height="auto"/>
            <RowDefinition  Height="auto"/>
        </Grid.RowDefinitions>
        <Viewport3D x:Name="View3D_1"    >
            <Viewport3D.Style>
                <Style TargetType="Viewport3D" >
                    <Style.Triggers>
                        <DataTrigger Binding="{Binding ElementName=ScaleZ,Path=Value}" Value="1">
                            <DataTrigger.EnterActions>
                                <BeginStoryboard >
                                    <Storyboard>
                                        <DoubleAnimationUsingKeyFrames  RepeatBehavior="Forever" Storyboard.TargetProperty="Opacity"  BeginTime="0:0:0"  Duration="0:0:10">
                                            <LinearDoubleKeyFrame KeyTime="0:0:0" Value="0"/>
                                            <LinearDoubleKeyFrame KeyTime="0:0:5" Value="1"/>
                                            <LinearDoubleKeyFrame KeyTime="0:0:8" Value="1"/>
                                            <LinearDoubleKeyFrame KeyTime="0:0:10" Value="0"/>
                                        </DoubleAnimationUsingKeyFrames>
                                    </Storyboard>
                                </BeginStoryboard>
                            </DataTrigger.EnterActions>
                        </DataTrigger>
                    </Style.Triggers>
                </Style>
            </Viewport3D.Style>
            <Viewport3D.Camera>
                <PerspectiveCamera   FieldOfView="{Binding ElementName=FOV, Path=Value}" Position="0,0,100" LookDirection="0,0,-1"/>
            </Viewport3D.Camera>
            <ModelVisual3D>
                <ModelVisual3D.Content>
                    <Model3DGroup>
                        <AmbientLight Color="White"/>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Left_Top_Z, Path=Value}" Axis="0 1 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Left_Top_Z, Path=Value}" Axis="1 0 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Right_Bottom_Z, Path=Value}" Axis="0 1 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Right_Bottom_Z, Path=Value}" Axis="1 0 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                    </Model3DGroup>
                </ModelVisual3D.Content>
            </ModelVisual3D>
        </Viewport3D>
        <Viewport3D  x:Name="View3D_2"    >
            <Viewport3D.Camera>
                <PerspectiveCamera   FieldOfView="{Binding ElementName=FOV, Path=Value}" Position="0,0,100" LookDirection="0,0,-1"/>
            </Viewport3D.Camera>
            <ModelVisual3D>
                <ModelVisual3D.Content>
                    <Model3DGroup>
                        <AmbientLight Color="White"/>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Left_Top_Z, Path=Value}" Axis="0 1 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Left_Top_Z, Path=Value}" Axis="1 0 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Right_Bottom_Z, Path=Value}" Axis="0 1 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                        <GeometryModel3D   Geometry="{StaticResource Rect3D_O}"  Material="{StaticResource Img}" BackMaterial="{StaticResource Img}" >
                            <GeometryModel3D.Transform>
                                <Transform3DGroup>
                                    <RotateTransform3D CenterX="0" CenterY="1" CenterZ="0">
                                        <RotateTransform3D.Rotation>
                                            <AxisAngleRotation3D Angle="{Binding ElementName=Right_Bottom_Z, Path=Value}" Axis="1 0 0"/>
                                        </RotateTransform3D.Rotation>
                                    </RotateTransform3D>
                                    <ScaleTransform3D ScaleZ="{Binding  ElementName=ScaleZ_2, Path=Value}"/>
                                </Transform3DGroup>
                            </GeometryModel3D.Transform>
                        </GeometryModel3D>
                    </Model3DGroup>
                </ModelVisual3D.Content>
            </ModelVisual3D>
        </Viewport3D>
      
        <Slider   Grid.Row="1" x:Name="Left_Top_Z" Minimum="-90" Value="12"  Maximum="90" ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>
        <Slider   Grid.Row="2" x:Name="Right_Bottom_Z" Minimum="-90"  Value="-12" Maximum="0"  ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>
        <Slider   Grid.Row="3" x:Name="ScaleZ" Background="Red" Minimum="10"  Maximum="100"  ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}">
            <Slider.Style >
                <Style TargetType="Slider">
                    <Style.Triggers>
                        <Trigger Property="Tag" Value="1">
                            <Trigger.EnterActions>
                                <BeginStoryboard >
                                    <Storyboard>
                                        <DoubleAnimation  RepeatBehavior="Forever"  Storyboard.TargetProperty="Value"   From="11" To="20" BeginTime="0:0:0"   Duration="0:0:10" />
                                    </Storyboard>
                                </BeginStoryboard>
                            </Trigger.EnterActions>
                        </Trigger>
                    </Style.Triggers>
                </Style>
            </Slider.Style>
        </Slider>
        <Slider   Grid.Row="4" x:Name="FOV" Minimum="0"  Maximum="180" Value="176" ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>
        <Slider   Grid.Row="5" x:Name="ScaleZ_2" Background="Black" Minimum="10"  Maximum="100"  ToolTip="{Binding  RelativeSource={RelativeSource Mode=Self}, Path=Value}"/>
        <StackPanel    Grid.Row="6" Orientation="Vertical">
            <TextBlock>
                <Run Text=" View3D_1 透明度"/>
                <Run Text="{Binding ElementName=View3D_1, Path=Opacity}"/>
                <Run Text=" View3D_1 value"/>
                <Run Text="{Binding ElementName=ScaleZ, Path=Value}"/>
                <Run Text=" Tag value"/>
                <Run Text="{Binding ElementName=ScaleZ, Path=Tag}"/>
                <Run Text=" Zindex value"/>
                <Run Text="{Binding ElementName=View3D_1, Path=(Panel.ZIndex)}"/>
            </TextBlock>
            <TextBlock>
                <Run Text=" View3D_2 透明度"/>
                <Run Text="{Binding ElementName=View3D_2, Path=Opacity}"/>
                <Run Text=" View3D_2 value"/>
                <Run Text="{Binding ElementName=ScaleZ_2, Path=Value}"/>
                <Run Text=" Zindex value"/>
                <Run Text="{Binding ElementName=View3D_2, Path=(Panel.ZIndex)}"/>
            </TextBlock>

        </StackPanel>
    </Grid>

这样呢,我们就不用任何C#代码来完成这个效果了。

必须承认,在开头0秒时做的不是很好,略有重影,所以还有很多地方需要学习。

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