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重新想象 Windows 8 Store Apps (19) - 动画: 线性动画, 关键帧动画, 缓动动画

Posted on 2013-04-15 08:04 webabcd 阅读(...) 评论(...) 编辑 收藏

[源码下载]


重新想象 Windows 8 Store Apps (19) - 动画: 线性动画, 关键帧动画, 缓动动画



作者:webabcd


介绍
重新想象 Windows 8 Store Apps 之 动画

  • 线性动画 - 共有 3 种: ColorAnimation, DoubleAnimation, PointAnimation, 它们均继承自 Timeline
  • 关键帧动画 - 共有 4 种:ColorAnimationUsingKeyFrames, DoubleAnimationUsingKeyFrames, PointAnimationUsingKeyFrames, ObjectAnimationUsingKeyFrames 它们均继承自 Timeline
  • 缓动动画 - easing



示例
1、演示线性动画的应用
Animation/LinearAnimation.xaml

<Page
    x:Class="XamlDemo.Animation.LinearAnimation"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:XamlDemo.Animation"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="Transparent">
        <!--
            线性动画一共有 3 种:ColorAnimation, DoubleAnimation, PointAnimation, 它们均继承自 Timeline
        
            Storyboard.TargetName - 附加属性,要进行动画处理的对象的名称
            Storyboard.TargetProperty - 附加属性,要进行动画处理的对象的属性
            BeginTime - 时间线在被触发 BeginTime 的时间后才能开始播放
                TimeSpan - [-][日.]时:分:秒[.1位到7为的秒后的小数](可为正;可为负;可为空;默认值为 0)
            From - 动画的起始值
            To - 动画的结束值
            By - 动画从起始值开始计算,所需变化的总量(To 优先于 By)
            Duration - 时间线的持续时间
                TimeSpan - [-][日.]时:分:秒[.1位到7为的秒后的小数]
                Automatic - 自动确定
                Forever - 无限长
            AutoReverse - 动画完成后是否要原路返回。默认值为 false
            RepeatBehavior - 动画重复播放的时间、次数或类型
                TimeSpan - [-][日.]时:分:秒[.1位到7为的秒后的小数]
                nx - 播放次数。1x, 2x, 3x 
                Forever - 永久播放
            SpeedRatio - 时间线的速率的倍数。默认值 1
            FillBehavior - 动画结束后的行为(System.Windows.Media.Animation.FillBehavior 枚举)
                FillBehavior.HoldEnd - 动画结束后,UI 保留动画后的状态。默认值
                FillBehavior.Stop - 动画结束后,UI 恢复为动画前的状态
        
        
            注意:
            1、在 WinRT 中为了流畅的体验,部分动画被优化成了“独立动画”,即动画不依赖于 UI 线程
            2、但是也有一部分动画无法优化成“独立动画”,我们把这类动画称作“依赖动画”,其需要在 UI 线程上运行
            3、通过将 EnableDependentAnimation 设置为 true(默认为 false),开启“依赖动画”
            4、通过将 Timeline.AllowDependentAnimations 设置为 false(默认为 true),可以全局禁止开启“依赖动画”
        
            Independent Animation - 独立动画
            Dependent Animation - 依赖动画
        -->    
        <Grid.Resources>
            <BeginStoryboard x:Name="storyboardColor">
                <Storyboard>
                    <!--Color 值线性动画-->
                    <!--
                        动画要修改的属性是 Ellipse.Fill,动画后的结果值会赋予 SolidColorBrush.Color,然后 SolidColorBrush 就是动画后 Fill 属性的值
                        类似的比如:(UIElement.RenderTransform).(CompositeTransform.TranslateY) 以及 (UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX) 等
                    -->
                    <ColorAnimation
                        Storyboard.TargetName="ellipse" 
                        Storyboard.TargetProperty="(Ellipse.Fill).(SolidColorBrush.Color)" 
                        BeginTime="00:00:00" 
                        From="Red" 
                        To="Yellow" 
                        Duration="0:0:3" 
                        AutoReverse="true" 
                        RepeatBehavior="3x">
                    </ColorAnimation>
                </Storyboard>
            </BeginStoryboard>
            
            <BeginStoryboard x:Name="storyboardDouble">
                <Storyboard>
                    <!--Double 值线性动画-->
                    <!--
                        动画要修改的属性是 Canvas.Left
                    -->
                    <DoubleAnimation
                        Storyboard.TargetName="rectangle" 
                        Storyboard.TargetProperty="(Canvas.Left)"
                        From="100"
                        By="100"
                        BeginTime="0:0:0"
                        Duration="00:00:03"
                        AutoReverse="true"
                        RepeatBehavior="Forever">
                    </DoubleAnimation>
                </Storyboard>
            </BeginStoryboard>

            <BeginStoryboard x:Name="storyboardPoint">
                <Storyboard>
                    <!--Point 值线性动画-->
                    <PointAnimation 
                        EnableDependentAnimation="True"
                        Storyboard.TargetName="ellipseGeometry"
                        Storyboard.TargetProperty="Center"
                        BeginTime="00:00:00"
                        From="50,50"
                        To="200,200"
                        Duration="00:00:03"
                        AutoReverse="true"
                        RepeatBehavior="Forever">
                    </PointAnimation>
                </Storyboard>
            </BeginStoryboard>
        </Grid.Resources>

        <StackPanel Margin="120 0 0 0">

            <Ellipse x:Name="ellipse" Fill="Orange" Width="200" Height="100" HorizontalAlignment="Left" />

            <Canvas Width="400" Height="100" HorizontalAlignment="Left" Margin="0 10 0 0">
                <Rectangle x:Name="rectangle" Fill="Orange" Width="200" Height="100" Canvas.Left="100" />
            </Canvas>
            
            <Path Fill="Orange">
                <Path.Data>
                    <EllipseGeometry x:Name="ellipseGeometry" Center="50,50" RadiusX="15" RadiusY="15" />
                </Path.Data>
            </Path>
            
        </StackPanel>
    </Grid>
</Page>


2、演示关键帧动画的应用
Animation/KeyFrameAnimation.xaml

<Page
    x:Class="XamlDemo.Animation.KeyFrameAnimation"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:XamlDemo.Animation"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="Transparent">
        <StackPanel Margin="120 0 0 0">

            <!--
                关键帧动画一共有 4 种:
                    ColorAnimationUsingKeyFrames, DoubleAnimationUsingKeyFrames, PointAnimationUsingKeyFrames, ObjectAnimationUsingKeyFrames 它们均继承自 Timeline
            
                ColorAnimationUsingKeyFrames, DoubleAnimationUsingKeyFrames, PointAnimationUsingKeyFrames 中的 KeyFrame 支持:
                    LinearColorKeyFrame, DiscreteColorKeyFrame, SplineColorKeyFrame, EasingColorKeyFrame
            
                ObjectAnimationUsingKeyFrames 中的 KeyFrame 支持:
                    DiscreteObjectKeyFrame
            
                Linear 代表线性,Discrete 代表离散,Spline 代表三次贝塞尔曲线,Easing 代表缓动
            
                Value - 关键帧的目标值
                KeyTime - 到达关键帧目标值的时间
                KeySpline - 三次贝塞尔曲线的两个控制点:x1,y1 x2,y2(该三次贝塞尔曲线的起点为0,0,终点为1,1)
            -->

            <Grid Margin="5" HorizontalAlignment="Left">
                <Grid.Resources>
                    <BeginStoryboard x:Name="storyboardColor">
                        <Storyboard>
                            <ColorAnimationUsingKeyFrames Storyboard.TargetName="solidColorBrush" Storyboard.TargetProperty="Color" Duration="0:0:10">
                                <LinearColorKeyFrame Value="Green" KeyTime="0:0:3" />
                                <DiscreteColorKeyFrame Value="Blue" KeyTime="0:0:4" />
                                <SplineColorKeyFrame Value="Red" KeySpline="0.6,0.0 0.9,0.00" KeyTime="0:0:6" />
                                <EasingColorKeyFrame Value="Orange" KeyTime="0:0:8">
                                    <EasingColorKeyFrame.EasingFunction>
                                        <ElasticEase EasingMode="EaseInOut" />
                                    </EasingColorKeyFrame.EasingFunction>
                                </EasingColorKeyFrame>
                            </ColorAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </Grid.Resources>
                <Rectangle Width="100" Height="50">
                    <Rectangle.Fill>
                        <SolidColorBrush x:Name="solidColorBrush" Color="Red" />
                    </Rectangle.Fill>
                </Rectangle>
            </Grid>


            <Grid Margin="5" HorizontalAlignment="Left">
                <Grid.Resources>
                    <BeginStoryboard x:Name="storyboardDouble">
                        <Storyboard>
                            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="translateTransform" Storyboard.TargetProperty="X" Duration="0:0:10">
                                <LinearDoubleKeyFrame Value="500" KeyTime="0:0:3" />
                                <DiscreteDoubleKeyFrame Value="400" KeyTime="0:0:4" />
                                <SplineDoubleKeyFrame Value="300" KeySpline="0.6,0.0 0.9,0.00" KeyTime="0:0:6" />
                                <EasingDoubleKeyFrame Value="200" KeyTime="0:0:8">
                                    <EasingDoubleKeyFrame.EasingFunction>
                                        <ElasticEase EasingMode="EaseInOut" />
                                    </EasingDoubleKeyFrame.EasingFunction>
                                </EasingDoubleKeyFrame>
                            </DoubleAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </Grid.Resources>
                <Rectangle Fill="Red" Width="100" Height="50">
                    <Rectangle.RenderTransform>
                        <TranslateTransform x:Name="translateTransform" X="0" Y="0" />
                    </Rectangle.RenderTransform>
                </Rectangle>
            </Grid>


            <Grid Margin="5" HorizontalAlignment="Left">
                <Grid.Resources>
                    <BeginStoryboard x:Name="storyboardPoint">
                        <Storyboard>
                            <PointAnimationUsingKeyFrames Storyboard.TargetName="ellipseGeometry" Storyboard.TargetProperty="Center" Duration="0:0:10" 
                                                          EnableDependentAnimation="True">
                                <LinearPointKeyFrame Value="100,100" KeyTime="0:0:3" />
                                <DiscretePointKeyFrame Value="200,200" KeyTime="0:0:4" />
                                <SplinePointKeyFrame Value="300,300" KeySpline="0.6,0.0 0.9,0.00" KeyTime="0:0:6" />
                                <EasingPointKeyFrame Value="400,400" KeyTime="0:0:8">
                                    <EasingPointKeyFrame.EasingFunction>
                                        <ElasticEase EasingMode="EaseInOut" />
                                    </EasingPointKeyFrame.EasingFunction>
                                </EasingPointKeyFrame>
                            </PointAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </Grid.Resources>
                <Path Fill="Red">
                    <Path.Data>
                        <EllipseGeometry x:Name="ellipseGeometry" Center="50,50" RadiusX="15" RadiusY="15" />
                    </Path.Data>
                </Path>
            </Grid>


            <Grid Margin="5" HorizontalAlignment="Left">
                <Grid.Resources>
                    <BeginStoryboard x:Name="storyboardObject">
                        <Storyboard>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="textBlock" Storyboard.TargetProperty="Text" Duration="0:0:10">
                                <DiscreteObjectKeyFrame KeyTime="0:0:1" Value="w" />
                                <DiscreteObjectKeyFrame KeyTime="0:0:2" Value="we" />
                                <DiscreteObjectKeyFrame KeyTime="0:0:3" Value="web" />
                                <DiscreteObjectKeyFrame KeyTime="0:0:4" Value="weba" />
                                <DiscreteObjectKeyFrame KeyTime="0:0:5" Value="webab" />
                                <DiscreteObjectKeyFrame KeyTime="0:0:6" Value="webabc" />
                                <DiscreteObjectKeyFrame KeyTime="0:0:7" Value="webabcd" />
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </BeginStoryboard>
                </Grid.Resources>
                <TextBlock x:Name="textBlock" Width="200" FontSize="26.667" Text="" />
            </Grid>

        </StackPanel>
    </Grid>
</Page>


3、演示缓动动画的应用
Animation/EasingAnimation.xaml

<Page
    x:Class="XamlDemo.Animation.EasingAnimation"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:XamlDemo.Animation"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="Transparent">
        <StackPanel Margin="120 0 0 0">

            <StackPanel Orientation="Horizontal">
                <StackPanel Orientation="Horizontal">
                    <TextBlock FontSize="26.667" Text="Easing Function:" VerticalAlignment="Top" />
                    <!-- 用于选择 Easing Function -->
                    <ComboBox x:Name="cboEasingFunction" SelectionChanged="cboEasingFunction_SelectionChanged_1" Margin="10 0 0 0">
                        <ComboBoxItem>BackEase</ComboBoxItem>
                        <ComboBoxItem>BounceEase</ComboBoxItem>
                        <ComboBoxItem>CircleEase</ComboBoxItem>
                        <ComboBoxItem>CubicEase</ComboBoxItem>
                        <ComboBoxItem>ElasticEase</ComboBoxItem>
                        <ComboBoxItem>ExponentialEase</ComboBoxItem>
                        <ComboBoxItem>PowerEase</ComboBoxItem>
                        <ComboBoxItem>QuadraticEase</ComboBoxItem>
                        <ComboBoxItem>QuarticEase</ComboBoxItem>
                        <ComboBoxItem>QuinticEase</ComboBoxItem>
                        <ComboBoxItem>SineEase</ComboBoxItem>
                    </ComboBox>
                </StackPanel>
                <StackPanel Orientation="Horizontal" Margin="10 0 0 0">
                    <TextBlock FontSize="26.667" Text="Easing Mode:" VerticalAlignment="Top" />
                    <ComboBox x:Name="cboEasingMode" SelectionChanged="cboEasingMode_SelectionChanged_1" Margin="10 0 0 0">
                        <!-- 用于选择 Easing Mode -->
                        <ComboBoxItem>EaseIn</ComboBoxItem>
                        <ComboBoxItem>EaseOut</ComboBoxItem>
                        <ComboBoxItem>EaseInOut</ComboBoxItem>
                    </ComboBox>
                </StackPanel>
            </StackPanel>

            <StackPanel Orientation="Horizontal" Margin="0 30 0 0">
                <StackPanel.Resources>
                    <Storyboard x:Name="storyboard">
                        <!-- 用于演示缓动动画的效果 -->
                        <DoubleAnimation x:Name="aniEasingDemo"
                            Storyboard.TargetName="easingDemo"
                            Storyboard.TargetProperty="(Canvas.Left)"
                            Duration="0:0:3"
                            RepeatBehavior="Forever"
                            From="0"
                            To="300" />

                        <!-- 用一个球显示缓动轨迹(X 轴代表时间) -->
                        <DoubleAnimation x:Name="aniBallX"
                            Storyboard.TargetName="ball"
                            Storyboard.TargetProperty="(Canvas.Left)"
                            Duration="0:0:3"
                            RepeatBehavior="Forever"
                            From="0"
                            To="100" />

                        <!-- 用一个球显示缓动轨迹(Y 轴代表当前时间点的缓动结果值) -->
                        <DoubleAnimation x:Name="aniBallY"
                            Storyboard.TargetName="ball"
                            Storyboard.TargetProperty="(Canvas.Top)"
                            Duration="0:0:3"
                            RepeatBehavior="Forever"
                            From="0"
                            To="100" />
                    </Storyboard>
                </StackPanel.Resources>
                <StackPanel>
                    <Canvas Name="graphContainer" RenderTransformOrigin="0,0.5" Height="100" Width="100">
                        <Canvas.RenderTransform>
                            <ScaleTransform ScaleY="-1" />
                        </Canvas.RenderTransform>
                        
                        <!-- 用于显示缓动曲线 -->
                        <Canvas Name="graph" />

                        <!-- 缓动曲线的 X 轴和 Y 轴 -->
                        <Line X1="0" Y1="0" X2="0" Y2="100" Stroke="Black" StrokeThickness="1" Width="1" Height="100" />
                        <Line X1="0" Y1="0" X2="100" Y2="1" Stroke="Black" StrokeThickness="1" Width="100" Height="1" />

                        <!-- 用一个球显示缓动轨迹 -->
                        <Ellipse Name="ball" Fill="Orange" Width="5" Height="5" />
                    </Canvas>
                </StackPanel>
                <StackPanel Margin="30 0 0 0">
                    <Border BorderBrush="Black" BorderThickness="1">
                        <Canvas Width="400" Height="100">
                            <!-- 用于演示缓动动画的效果 -->
                            <Rectangle Name="easingDemo" Width="100" Height="100" Fill="Blue" />
                        </Canvas>
                    </Border>
                </StackPanel>
            </StackPanel>
            
        </StackPanel>
    </Grid>
</Page>

Animation/EasingAnimation.xaml.cs

/*
 * 演示缓动(easing)的应用
 * 
 * WinRT 支持 11 种经典的缓动:
 * BackEase, BounceEase, CircleEase, CubicEase, ElasticEase, ExponentialEase, PowerEase, QuadraticEase, QuarticEase, QuinticEase, SineEase
 * 
 * EasingMode 有 3 种:
 * EaseIn, EaseOut, EaseInOut
 */

using Windows.Foundation;
using Windows.UI;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Media.Animation;
using Windows.UI.Xaml.Navigation;
using Windows.UI.Xaml.Shapes;

namespace XamlDemo.Animation
{
    public sealed partial class EasingAnimation : Page
    {
        public EasingAnimation()
        {
            this.InitializeComponent();

            this.Loaded += EasingAnimation_Loaded;
        }

        void EasingAnimation_Loaded(object sender, Windows.UI.Xaml.RoutedEventArgs e)
        {
            cboEasingFunction.SelectedIndex = 0;
            cboEasingMode.SelectedIndex = 0;
        }

        private void cboEasingFunction_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
        {
            EasingChanged();
        }

        private void cboEasingMode_SelectionChanged_1(object sender, SelectionChangedEventArgs e)
        {
            EasingChanged();
        }

        private void EasingChanged()
        {
            if (cboEasingFunction.SelectedIndex == -1 || cboEasingMode.SelectedIndex == -1)
                return;

            storyboard.Stop();

            EasingFunctionBase easingFunction = null;

            // 确定 Easing Function
            switch ((cboEasingFunction.SelectedItem as ComboBoxItem).Content.ToString())
            {
                case "BackEase":
                    // Amplitude - 幅度,必须大于等于 0,默认值 1
                    easingFunction = new BackEase() { Amplitude = 1 };
                    break;
                case "BounceEase":
                    // Bounces - 弹跳次数,必须大于等于 0,默认值 3
                    // Bounciness - 弹跳程度,必须是正数,默认值 2
                    easingFunction = new BounceEase() { Bounces = 3, Bounciness = 2 };
                    break;
                case "CircleEase":
                    easingFunction = new CircleEase();
                    break;
                case "CubicEase":
                    easingFunction = new CubicEase();
                    break;
                case "ElasticEase":
                    // Oscillations - 来回滑动的次数,必须大于等于 0,默认值 3
                    // Springiness - 弹簧的弹度,必须是正数,默认值 3
                    easingFunction = new ElasticEase() { Oscillations = 3, Springiness = 3 };
                    break;
                case "ExponentialEase":
                    easingFunction = new ExponentialEase();
                    break;
                case "PowerEase":
                    easingFunction = new PowerEase();
                    break;
                case "QuadraticEase":
                    easingFunction = new QuadraticEase();
                    break;
                case "QuarticEase":
                    easingFunction = new QuarticEase();
                    break;
                case "QuinticEase":
                    easingFunction = new QuinticEase();
                    break;
                case "SineEase":
                    easingFunction = new SineEase();
                    break;
                default:
                    break;
            }

            // 确定 Easing Mode
            switch ((cboEasingMode.SelectedItem as ComboBoxItem).Content.ToString())
            {
                case "EaseIn":
                    easingFunction.EasingMode = EasingMode.EaseIn;
                    break;
                case "EaseOut":
                    easingFunction.EasingMode = EasingMode.EaseOut;
                    break;
                case "EaseInOut":
                    easingFunction.EasingMode = EasingMode.EaseInOut;
                    break;
                default:
                    break;
            }

            // 用于演示缓动效果
            aniEasingDemo.EasingFunction = easingFunction;
            // 用于演示缓动轨迹
            aniBallY.EasingFunction = easingFunction;

            // 画出当前缓动的曲线图
            DrawEasingGraph(easingFunction);

            storyboard.Begin();
        }

        /// <summary>
        /// 绘制指定的 easing 的曲线图
        /// </summary>
        private void DrawEasingGraph(EasingFunctionBase easingFunction)
        {
            graph.Children.Clear();

            Path path = new Path();
            PathGeometry pathGeometry = new PathGeometry();
            PathFigure pathFigure = new PathFigure() { StartPoint = new Point(0, 0) };
            PathSegmentCollection pathSegmentCollection = new PathSegmentCollection();

            // 0 - 1 之间每隔 0.005 计算出一段 LineSegment,用于显示此 0.005 时间段内的缓动曲线
            for (double i = 0; i < 1; i += 0.005)
            {
                double x = i * graphContainer.Width;
                double y = easingFunction.Ease(i) * graphContainer.Height;

                LineSegment segment = new LineSegment();
                segment.Point = new Point(x, y);
                pathSegmentCollection.Add(segment);
            }

            pathFigure.Segments = pathSegmentCollection;
            pathGeometry.Figures.Add(pathFigure);
            path.Data = pathGeometry;
            path.Stroke = new SolidColorBrush(Colors.Black);
            path.StrokeThickness = 1;

            graph.Children.Add(path);
        }
    }
}



OK
[源码下载]