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想到昨天去健身房，我拿哑铃练肱二头肌，旁边有一女的
时不时的侧着脸来看我，还嘴角带着笑，妈的嘲笑我练的重量小吗，
我拿12kg在练，那女的拿个2.5kg在那举着玩，还好意思笑我？
前言
前几天逛Gayhub看到一篇CSS 的动画，然后就想着用WPF实现。
下方是CSS中的效果：
描述下我实现中所走的弯路。
第一次实验：我新创建 Rectangle 然后其创建了一个装饰器 Adorner
然后在装饰器画了一个Pen ，像移动X轴 然后转换角度 接着走Y轴。事实给了我一记响亮的嘴巴。
Pen renderPen = new Pen(new SolidColorBrush(Colors.Red), 2.5); drawingContext.DrawLine(renderPen, new Point(0, 0), new Point(AdornedElement.RenderSize.Width / 10, 0)); var translateTransform = new TranslateTransform(); var rotateTransform = new RotateTransform(); var transformGroup = new TransformGroup(); transformGroup.Children.Add(translateTransform); transformGroup.Children.Add(rotateTransform); this.RenderTransformOrigin = new Point(0.5,0.5); this.RenderTransform = transformGroup; var doubleAnimationX = new DoubleAnimation { To = AdornedElement.RenderSize.Width - AdornedElement.RenderSize.Width / 10, Duration = new Duration(TimeSpan.FromSeconds(2)) }; TranslateTransform t = transformGroup.Children[0] as TranslateTransform; t.BeginAnimation(TranslateTransform.XProperty, doubleAnimationX); var doubleAnimationAngle = new DoubleAnimation { To = 90, Duration = new Duration(TimeSpan.FromSeconds(.1)) }; RotateTransform t2 = transformGroup.Children[1] as RotateTransform; t2.BeginAnimation(RotateTransform.AngleProperty, doubleAnimationAngle);
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上当时的效果图。
(⊙﹏⊙) 是不是就像探照灯一样。
我再次尝试画了一个圆设置Clip发现还是错误的。
开始上源码
尝试PointAnimationUsingKeyFrames发现可行o(*￣▽￣*)ブ
<Window.Resources> <Storyboard x:Key="Storyboard1" RepeatBehavior="Forever"> <PointAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Stroke).(LinearGradientBrush.StartPoint)" Storyboard.TargetName="rectangle"> <EasingPointKeyFrame KeyTime="0:0:0.5" Value="0.855,0.148"/> <EasingPointKeyFrame KeyTime="0:0:1" Value="0.852,0.855"/> <EasingPointKeyFrame KeyTime="0:0:1.5" Value="0.148,0.855"/> <EasingPointKeyFrame KeyTime="0:0:2" Value="0.144,0.149"/> <EasingPointKeyFrame KeyTime="0:0:2.5" Value="0,0"/> </PointAnimationUsingKeyFrames> <PointAnimationUsingKeyFrames Storyboard.TargetProperty="(Shape.Stroke).(LinearGradientBrush.EndPoint)" Storyboard.TargetName="rectangle"> <EasingPointKeyFrame KeyTime="0:0:0.5" Value="0.145,0.852"/> <EasingPointKeyFrame KeyTime="0:0:1" Value="0.148,0.145"/> <EasingPointKeyFrame KeyTime="0:0:1.5" Value="0.852,0.145"/> <EasingPointKeyFrame KeyTime="0:0:2" Value="0.856,0.851"/> <EasingPointKeyFrame KeyTime="0:0:2.5" Value="0,1"/> </PointAnimationUsingKeyFrames> </Storyboard> </Window.Resources> <Window.Triggers> <EventTrigger RoutedEvent="FrameworkElement.Loaded"> <BeginStoryboard Storyboard="{StaticResource Storyboard1}"/> </EventTrigger> </Window.Triggers> <Grid> <Rectangle x:Name="rectangle" Width="200" Height="200" HorizontalAlignment="Center" VerticalAlignment="Center" StrokeThickness="3"> <Rectangle.Stroke> <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0" Opacity=".6"> <GradientStop Color="Transparent" Offset="0"/> <GradientStop Color="#FF025F20" Offset="1"/> </LinearGradientBrush> </Rectangle.Stroke> </Rectangle> </Grid>
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成品图：
如果大佬有更好的方式欢迎交流。
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