WinRT的（C＃/ XAML）刻度不模糊(WinRT (C#/XAML) Scale withou

我已经把其中有一个控制缩放从0.1到1.0（X和Y）碱性动画。我一直在整个看到的问题是这样的说控制“模糊”，他们定居在最后的静止状态之前。

一个例子是这样的屏幕凸轮我拿了。

观看屏幕凸轮

我不知道是什么导致了这一点。它是一种默认的动画/故事板，你将通过混合产生。

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleX)" Storyboard.TargetName="UIBorder" >
            <EasingDoubleKeyFrame KeyTime="0" Value="0.2">
                <EasingDoubleKeyFrame.EasingFunction>
                    <BackEase EasingMode="EaseInOut"/>
                </EasingDoubleKeyFrame.EasingFunction>
            </EasingDoubleKeyFrame>
            <EasingDoubleKeyFrame KeyTime="0:0:1.4" Value="1">
                <EasingDoubleKeyFrame.EasingFunction>
                    <BackEase EasingMode="EaseInOut" Amplitude="3"/>
                </EasingDoubleKeyFrame.EasingFunction>
            </EasingDoubleKeyFrame>
        </DoubleAnimationUsingKeyFrames>

所述控制：

<Grid x:Name="UIBorder" Width="555"  HorizontalAlignment="Center" VerticalAlignment="Center" RenderTransformOrigin="0.5,0.5">
            <Grid.RenderTransform>
                <CompositeTransform ScaleY="0.2" ScaleX="0.2"/>
            </Grid.RenderTransform>

            <Grid Margin="122,0,0,0" RenderTransformOrigin="0.5,0.5" >
                <Border Background="#FF343434" ManipulationMode="None" IsDoubleTapEnabled="False" IsHoldingEnabled="False" IsRightTapEnabled="False" IsTapEnabled="False" RenderTransformOrigin="0.5,0.5"  >
                    <Border.RenderTransform>
                        <CompositeTransform/>
                    </Border.RenderTransform>
                </Border>
            </Grid>
            <Image HorizontalAlignment="Left" VerticalAlignment="Center" Source="ms-appx:///Assets/Chrome/LoginSeal.png" Stretch="None"/>
        </Grid>

注意：

我有这个模糊证实两者在Windows 8 PC上，并从两个独立的来源（即不特定硬件）表面RT平板。
我试过BitmapCache，看看是否有任何更改（因为它会变得更糟）。

Answer 1:

似乎是一个错误。显然WinRT的期间动画自动转向CacheMode参数到BitmapCache和它缓存在低比例的对象。虽然我无法重现你现在看到我在动画的TextBlocks的投影性能当Windows 8的预发布版本的人有类似的问题。我认为有可能发生的是它使用开始动画determing用于BitmapCache（这是不是在WinRT中可用的RenderAtScale属性值之前使用控件的最高规模，但在Silverlight或WPF存在，它似乎是一个版本，它存在于WinRT的，它只是不暴露在API的用户）。然后一个解决办法可能会以某种方式无形中设置你的位图的scaleX /的scaleY值设置为1时，它加载，然后返回到0.2位图首先显示之前。或者你可以有动画开始前控制的不透明度设置为0和规模为1，那么动画规模为0.2后淡入控制。如果你真的需要小个动画之前露面 - 你可以有控制的两个副本 - 一个小的一个动画开始后消失的权利，而另一个开始大而无形的（或不透明度=“0.005” ），并很快以动画方式不透明度1，当动画开始规模0.2。

这看起来很好对我说：

<Page
    x:Class="App76.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App76"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">
    <Page.Resources>
        <Storyboard
            x:Name="anim"
            SpeedRatio="0.2">
            <DoubleAnimationUsingKeyFrames
                Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleX)"
                Storyboard.TargetName="UIBorder">
                <EasingDoubleKeyFrame
                    KeyTime="0"
                    Value="0.2">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <BackEase
                            EasingMode="EaseInOut" />
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
                <EasingDoubleKeyFrame
                    KeyTime="0:0:1.4"
                    Value="1">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <BackEase
                            EasingMode="EaseInOut"
                            Amplitude="3" />
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames
                Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.ScaleY)"
                Storyboard.TargetName="UIBorder">
                <EasingDoubleKeyFrame
                    KeyTime="0"
                    Value="0.2">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <BackEase
                            EasingMode="EaseInOut" />
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
                <EasingDoubleKeyFrame
                    KeyTime="0:0:1.4"
                    Value="1">
                    <EasingDoubleKeyFrame.EasingFunction>
                        <BackEase
                            EasingMode="EaseInOut"
                            Amplitude="3" />
                    </EasingDoubleKeyFrame.EasingFunction>
                </EasingDoubleKeyFrame>
            </DoubleAnimationUsingKeyFrames>

        </Storyboard>
    </Page.Resources>
    <Grid
        Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
        <Grid
            x:Name="UIBorder"
            Width="555"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            RenderTransformOrigin="0.5,0.5">
            <!--<Grid.CacheMode>
                <BitmapCache
                    />
            </Grid.CacheMode>-->
            <Grid.RenderTransform>
                <CompositeTransform
                    x:Name="ct"
                    ScaleY="0.2"
                    ScaleX="0.2" />
            </Grid.RenderTransform>

            <Grid
                Margin="122,0,0,0"
                RenderTransformOrigin="0.5,0.5">
                <Border
                    Background="#FF343434"
                    ManipulationMode="None"
                    IsDoubleTapEnabled="False"
                    IsHoldingEnabled="False"
                    IsRightTapEnabled="False"
                    IsTapEnabled="False"
                    RenderTransformOrigin="0.5,0.5">
                    <Border.RenderTransform>
                        <CompositeTransform />
                    </Border.RenderTransform>
                </Border>
            </Grid>
            <Image
                HorizontalAlignment="Left"
                VerticalAlignment="Center"
                Source="ms-appx:///Assets/SplashScreen.png"
                Stretch="None" />
        </Grid>
        <Button
            VerticalAlignment="Bottom"
            HorizontalAlignment="Left"
            Content="TEST"
            Click="ButtonBase_OnClick" />
    </Grid>
</Page>

using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;

namespace App76
{
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();
            ct.ScaleX = 1;
            ct.ScaleY = 1;
            this.Loaded += MainPage_Loaded;
        }

        void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            ct.ScaleX = 0.2;
            ct.ScaleY = 0.2;
        }

        private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
        {
            anim.Begin();
        }
    }
}

Answer 2:

设置UseLayoutRounding =“真”为UIBorder