wpf 帧动画

帧动画实现很简单

<ImageBrush x:Key="speed_s" Stretch="Fill" ImageSource="/images/air/speed_s.png" />

        <ImageBrush x:Key="speed_m" ImageSource="/images/air/speed_m.png" />

        <ImageBrush x:Key="speed_l" ImageSource="/images/air/speed_l.png" />



<Storyboard x:Name="FrameAnim">

            <ObjectAnimationUsingKeyFrames Duration="0:0:1.6" RepeatBehavior="Forever" Storyboard.TargetName="WindSpeedThumb" Storyboard.TargetProperty="Fill">

                <DiscreteObjectKeyFrame KeyTime="0:0:0.4" Value="{StaticResource speed_s}" />

                <DiscreteObjectKeyFrame KeyTime="0:0:0.8" Value="{StaticResource speed_m}" />

                <DiscreteObjectKeyFrame KeyTime="0:0:1.2" Value="{StaticResource speed_l}" />

            </ObjectAnimationUsingKeyFrames>

        </Storyboard>





 <Grid Margin="0,0,28,40" Width="98" Height="98" HorizontalAlignment="Right" VerticalAlignment="Bottom">

                <!--<Image Width="35" Margin="0,10,0,0" Stretch="Uniform" VerticalAlignment="Top" Source="/images/air/direction_0.png" />-->

                <Rectangle x:Name="WindDirectionThumb" Width="35" Height="35" Margin="0,10,0,0" VerticalAlignment="Top" Fill="{StaticResource direction_0}" />

                <pretty:PrettyButton x:Name="WindDirection" Margin="0,0,0,-7" Width="97" Height="55" VerticalAlignment="Bottom" PressedBrush="{StaticResource ac_winddirection_s}" NormalBrush="{StaticResource ac_winddirection_d}" />

            </Grid>

代码中使用begin开始，stop结束动画

 FrameAnim.Begin();





FrameAnim.Stop();