{开源，共建}多歌手写真轮播UI动画优化，需要减少性能开销

[Super-Badmen-Viper]

此多歌手写真轮播UI动画会占用大量系统资源，显示的歌手写真像素越大则卡顿几率越大，需要精简优化，或者替换性能更好更美观的UI动画 相关代码：（代码位置在MoZhiMusicPlayer/mainwindows.xaml.cs中3282行）

    ObjectAnimationUsingKeyFrames oa;
    ObjectAnimationUsingKeyFrames oa_2;
    private void BgSwitch(string imgPath)
    {
        oa = bgstoryboard.Children.FirstOrDefault(c => c is ObjectAnimationUsingKeyFrames) as ObjectAnimationUsingKeyFrames;
        oa.KeyFrames[0].Value = new BitmapImage(new Uri(imgPath));
    }
    Storyboard bgstoryboard = null;
    private void BgSwitchIni()
    {
        //动画占用过高CPU及GPU
        //此动画效果为渲染所有的像素，效率过低
        //应更改为     多区块渲染过渡 / 线性渲染过渡 / 淡化渲染过渡 / 模糊重叠过渡渲染
        DoubleAnimationUsingKeyFrames da = new DoubleAnimationUsingKeyFrames();
        EasingDoubleKeyFrame sd = new EasingDoubleKeyFrame(0, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(200)));
        da.KeyFrames.Add(sd);
        Storyboard.SetTargetName(da, musicPlayer_Main_UserControl.Grid_down_Singer_Photo.Name);
        DependencyProperty[] propertyChain = new DependencyProperty[]
        {
                Panel.BackgroundProperty,
                Brush.OpacityProperty
        };
        Storyboard.SetTargetProperty(da, new PropertyPath("(0).(1)", propertyChain));

        ObjectAnimationUsingKeyFrames oa = new ObjectAnimationUsingKeyFrames();
        DiscreteObjectKeyFrame diso = new DiscreteObjectKeyFrame(new BitmapImage(new Uri(Path_App + @"\Button_Image_Ico\Space.png", UriKind.Absolute)), KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(10)));
        oa.KeyFrames.Add(diso);
        oa.BeginTime = new TimeSpan(0, 0, 0, 1, 0);
        Storyboard.SetTargetName(oa, musicPlayer_Main_UserControl.Grid_down_Singer_Photo.Name);
        DependencyProperty[] propertyChain2 = new DependencyProperty[]
        {
                Panel.BackgroundProperty,
                ImageBrush.ImageSourceProperty
        };
        Storyboard.SetTargetProperty(oa, new PropertyPath("(0).(1)", propertyChain2));

        DoubleAnimationUsingKeyFrames da2 = new DoubleAnimationUsingKeyFrames();
        da2.BeginTime = new TimeSpan(0, 0, 0, 1, 5);
        EasingDoubleKeyFrame sd2 = new EasingDoubleKeyFrame(1, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(200)));
        da2.KeyFrames.Add(sd2);
        Storyboard.SetTargetName(da2, musicPlayer_Main_UserControl.Grid_down_Singer_Photo.Name);
        Storyboard.SetTargetProperty(da2, new PropertyPath("(0).(1)", propertyChain));

        bgstoryboard.Children.Add(da);
        bgstoryboard.Children.Add(oa);
        bgstoryboard.Children.Add(da2);
    }

[Super-Badmen-Viper]

我已将之前的歌手写真动画弃用，正在开发新的性能更好的UI动画，例如：将19201080的歌手写真，图片分割为44，再将4*4的图片多线程类似百叶窗的动画显示在ItemsControl，我已经完成了这个任务，目前正在测试有无其他的BUG

[Super-Badmen-Viper]

我已经完成了新的UI动画的工作，动画内容是将图片分割再组合
注意，它可以自定义分割的大小，默认是4 x 4（Columns*Rows） 生成16张照片，过大的参数则会造成卡顿，比如16 x 9会生成144张图片，源码没有添加异步所以大参数会卡顿 以下是可以更改的地方，我以后会将它设置在动画选择界面中供用户自定义
代码：

你可以提交新的写真切换UI动画，要求是性能较好占用资源较少，此问题将暂时关闭