Question

我创建了一个动画图像以在我的画布上移动，然后我创建了另一个动画图像;

我想隐藏我的第一张图片，然后移动另一幅图像;

我尝试将绘图视觉或图像画笔等的不透明度设置为零;但是我的所有图像都是

隐藏;

   List<EllipseGeometry> eg = new List<EllipseGeometry>();
            Path ballPath;
            int c = 0;
            foreach (Polyline p in pl)
            {
                if (p.Points.Count > 1)
                {

                    ballPath = new Path();

                    FormattedText formattedText = new FormattedText("  " + (anl[c].DOffset).ToString() + "\n " + anl[c].playername + "  ", CultureInfo.GetCultureInfo("en-us"),
                    FlowDirection.LeftToRight,
                    new Typeface("arial"),
                   20,
                    Brushes.Black);

                    formattedText.MaxTextWidth = 500;
                    formattedText.MaxTextHeight = 500;
                    DrawingVisual drawingVisual = new DrawingVisual();
                    DrawingContext drawingContext = drawingVisual.RenderOpen();
                    drawingContext.DrawImage(il[c].Source, new Rect(4, 0, 26, 26));//30
                    drawingContext.DrawText(formattedText, new Point(1, 2));
                    drawingContext.Close();
                    RenderTargetBitmap bmp = new RenderTargetBitmap((int)formattedText.WidthIncludingTrailingWhitespace, (int)formattedText.Height, 96, 96, PixelFormats.Pbgra32);
                    bmp.Render(drawingVisual);
                    ImageBrush b = new ImageBrush(bmp);
                    b.Stretch = Stretch.Uniform;
                    ballPath.Fill = b;
                    mainwindow.animecan.Children.Add(ballPath);
                   ////
                    int jy = 0;
                    for (int i = 0; i < anl.Count; i++)
                    {
                        try
                        {
                            if (anl[i].offset == m)
                                jy = anl[i].offset;
                        }
                        catch
                        {
                        }
                    }
                    if (multi && p.Uid == jy.ToString())//اگر آفست مالتی اسپید شده باشه
                    {
                        eg.Add(new EllipseGeometry(ms[ih].p1, 27, 27));
                        ballPath.Data = eg.First();// animatedEllipseGeometry;
                        PathFigure myPathFigure = new PathFigure();
                        PointCollection pe = new PointCollection();
                        pe.Add(ms[ih].p1);
                        pe.Add(ms[ih].p2);
                        myPathFigure.StartPoint = eg.First().Center;
                        myPathFigure.Segments.Add(
                            new PolyLineSegment(pe, true));
                        PathGeometry myPathGeometry = new PathGeometry();
                        myPathGeometry.Figures.Add(myPathFigure);
                        myPathGeometry = new PathGeometry();
                        myPathGeometry.Figures.Add(myPathFigure);//
                        PointAnimationUsingPath centerPointAnimation1 = new PointAnimationUsingPath();
                        centerPointAnimation1.PathGeometry = myPathGeometry;
                        centerPointAnimation1.Duration = TimeSpan.FromSeconds(ms[ih].sspeed);
                        centerPointAnimation1.BeginTime = TimeSpan.FromSeconds(ms[ih].delay);
                        centerPointAnimation1.FillBehavior = FillBehavior.HoldEnd;
                        eg.First().BeginAnimation(EllipseGeometry.CenterProperty, centerPointAnimation1);
                        eg.Remove(eg.First());
                    }
                    c++;

Answer 1

我认为您的问题是由于您的整个代码块被立即执行而造成的。（在更新用户界面之前），而不是逐行排除＆＃39;。为了在执行到达代码块结束之前调用Visibility属性更新，您需要在Dispatcher对象上对其进行排队。试试这个：

Dispatcher.CurrentDispatcher.Invoke(DispatcherPriority.Normal, (Action)delegate
{
    yourControl.Visibility = Visibility.Collapsed;
});

如何在画布上隐藏动画图像？

1 个答案: