我尝试使用路径几何体来使用WPF在曲线路径中移动图像。但是,当我点击“开始”'按钮,画布本身在路径中移动,而不是图像。那么我将如何通过点击“开始”来移动图像。按钮?以下是已完成的代码。
这是我的xaml代码:
<Window x:Class="WpfAppPoint4.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfAppPoint4"
mc:Ignorable="d"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<Storyboard x:Key="Storyboard1">
<MatrixAnimationUsingPath
Storyboard.TargetProperty="RenderTransform.(MatrixTransform.Matrix)"
Duration="0:0:5" DoesRotateWithTangent="True">
<MatrixAnimationUsingPath.PathGeometry>
<PathGeometry Figures="M0,0 L50,0 A100,100 0 0 1 150,100
A50,50 0 1 1 100,50 L200,50"/>
</MatrixAnimationUsingPath.PathGeometry>
</MatrixAnimationUsingPath>
</Storyboard>
</Window.Resources>
<Grid>
<Canvas Name="MyCanvas" Margin="4,10,-4,-10">
<Button x:Name="button_Start" Content="Start" HorizontalAlignment="Right"
VerticalAlignment="Top" Width="150" Click="Button_Start"
Canvas.Right="320" Canvas.Top="553" Height="45" FontFamily="Microsoft
Sans Serif" FontSize="20">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard Storyboard="{StaticResource
Storyboard1}"/>
</EventTrigger>
</Button.Triggers>
</Button>
<Image Source="C:\Users\Merlinz\Downloads\Kid-Tap\Kid-Tap\parent.png"
x:Name="ParentNode" Width="40" Height="40" Canvas.Top="100"
Canvas.Left="5"
RenderTransformOrigin="0.5,0.5">
<Image.RenderTransform>
<TransformGroup>
<MatrixTransform/>
</TransformGroup>
</Image.RenderTransform>
</Image>
</Grid>
</Canvas>
答案 0 :(得分:0)
为了使动画能够在Image元素上运行,您必须设置Storyboard.TargetName
属性。
除此之外,当您想要在元素的RenderTransform属性中设置MatrixTransform的动画时,您不能将MatrixTransform放在TransformGroup中。
因此,请将您的图像声明更改为:
<Image x:Name="movingImage" ...>
<Image.RenderTransform>
<MatrixTransform/>
</Image.RenderTransform>
</Image>
这样的动画(属性路径RenderTransform.Matrix
等同于你的,但更短):
<MatrixAnimationUsingPath
Storyboard.TargetProperty="RenderTransform.Matrix"
Storyboard.TargetName="movingImage" ...>
...
</MatrixAnimationUsingPath>