WPF成长之路------帧动画（1）

最近公司的一个项目因为是WPF的，而自己已经很长一段时间没有接触过WPF了，再加上之前没有做过wpf的动画效果，因此在学习的过程中也顺便记录一下，说不定以后还会用上，同时也算是总结一下吧！刚开始写博客，写得不好的地方大家多多见谅！不喜勿喷！

这个效果主要是通过各种图形的组合进行绘图，然后通过贝塞尔曲线绘制主要的动画图形，从而实现帧动画！

先上效果图:

动态图效果不好，所以也放了一张静态图片。

首先是绘制图形部分，图形主要是五部分组成：背景的虚化效果、圆弧（由两部分组成，分别设置渐变色）、圆形边框、圆形内部颜色以及动画部分，代码如下：

<Viewbox>
        <DockPanel>
            <Grid>
                <ed:Arc x:Name="shadowArc" StartAngle="0" EndAngle="360" Height="200" Width="200" ArcThickness="40" Opacity="0.7">
                    <ed:Arc.Fill>
                        <SolidColorBrush x:Name="shadowColor" Color="#0689FF"></SolidColorBrush>
                    </ed:Arc.Fill>
                    <ed:Arc.Effect>
                        <BlurEffect Radius="15" KernelType="Box"  RenderingBias="Quality"/>
                    </ed:Arc.Effect>
                </ed:Arc>
                <ed:Arc StartAngle="0" EndAngle="360" ArcThickness="2" Height="140" Width="140" Fill="#8BFCF4" Margin="0 0 0 30"></ed:Arc>
                <ed:Arc StartAngle="0" EndAngle="360" ArcThickness="122" Height="135" Width="135" Fill="#0048B4" Margin="0 0 0 30"></ed:Arc>
                <ed:Arc Height="140" Width="140" Margin="0 0 0 30" StartAngle="90" EndAngle="180"></ed:Arc>
                <Path Height="140" Width="140" Margin="0 0 0 30" Fill="#11DAB9">
                    <Path.Data>
                        <PathGeometry>
                            <PathFigure x:Name="pf_main" StartPoint="0,70">
                                <BezierSegment x:Name="bs_main0" Point1="30,100" Point2="40,80" Point3="50,70"></BezierSegment>
                                <BezierSegment x:Name="bs_main1" Point1="50,70" Point2="60,65" Point3="70,70"></BezierSegment>
                                <BezierSegment x:Name="bs_main2" Point1="70,70" Point2="80,80" Point3="90,70"></BezierSegment>
                                <BezierSegment x:Name="bs_main3" Point1="90,70" Point2="100,65" Point3="105,65"></BezierSegment>
                                <BezierSegment x:Name="bs_main4" Point1="105,65" Point2="120,60" Point3="130,65"></BezierSegment>
                                <BezierSegment x:Name="bs_main5" Point1="130,65" Point2="135,65" Point3="140,75"></BezierSegment>
                                <PolyLineSegment Points="140,120 70,150 0,120"></PolyLineSegment>
                            </PathFigure>
                        </PathGeometry>
                    </Path.Data>
                </Path>
                <ed:Arc StartAngle="90" EndAngle="180" Height="90" Width="90" ArcThickness="10" Margin="85 60 0 0">
                    <ed:Arc.Fill>
                        <LinearGradientBrush StartPoint="1,0" EndPoint="0,0">
                            <GradientStop Color="#038EFF" Offset="0"></GradientStop>
                            <GradientStop Color="#126DFF" Offset="1"></GradientStop>
                        </LinearGradientBrush>
                    </ed:Arc.Fill>
                </ed:Arc>
                <ed:Arc StartAngle="180" EndAngle="270" Height="90" Width="90" ArcThickness="10" Margin="-85 60 0 0">
                    <ed:Arc.Fill>
                        <LinearGradientBrush StartPoint="1,0" EndPoint="0,0">
                            <GradientStop Color="#126DFF" Offset="0"></GradientStop>
                            <GradientStop Color="#4826D2" Offset="1"></GradientStop>
                        </LinearGradientBrush>
                    </ed:Arc.Fill>
                </ed:Arc>
                <Button x:Name="button" Width="50" Height="20" VerticalAlignment="Top" HorizontalAlignment="Left">动画</Button>
            </Grid>
        </DockPanel>
    </Viewbox>

随后设置内部动画效果,设置的点位越多，动画效果也好，这里就由大家自己的琢磨了（帧动画）:

<UserControl.Resources>
        <ResourceDictionary>
            <Storyboard x:Key="stb">
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main0" Storyboard.TargetProperty="Point2" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="4x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="45,70" KeyTime="0:0:0.8"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main2" Storyboard.TargetProperty="Point3" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="4x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="90,75" KeyTime="0:0:1.2"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main3" Storyboard.TargetProperty="Point1" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="4x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="90,75" KeyTime="0:0:1.2"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main3" Storyboard.TargetProperty="Point2" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="4x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="100,70" KeyTime="0:0:1.2"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main3" Storyboard.TargetProperty="Point3" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="5x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="105,68" KeyTime="0:0:1.2"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main4" Storyboard.TargetProperty="Point1" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="5x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="105,68" KeyTime="0:0:0.8"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
                <PointAnimationUsingKeyFrames Storyboard.TargetName="bs_main4" Storyboard.TargetProperty="Point2" BeginTime="0:0:0.7" AutoReverse="True" RepeatBehavior="5x" FillBehavior="Stop">
                    <EasingPointKeyFrame Value="120,65" KeyTime="0:0:0.8"></EasingPointKeyFrame>
                </PointAnimationUsingKeyFrames>
            </Storyboard>
        </ResourceDictionary>
    </UserControl.Resources>
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="FrameworkElement.Loaded">
            <BeginStoryboard Storyboard="{StaticResource stb}"></BeginStoryboard>
        </EventTrigger>
        <EventTrigger SourceName="button" RoutedEvent="Button.Click">
            <BeginStoryboard Storyboard="{StaticResource stb}"></BeginStoryboard>
        </EventTrigger>
    </UserControl.Triggers>

参考链接：https://www.cnblogs.com/tsliwei/p/5770546.html