private void Work()
{
Viewport viewport_prev = new Viewport();
Viewport viewport_curr = new Viewport();
bool drew = false;
while (true)
{
long beg = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(); // 当前帧开始的时间
double dX = 0, dY = 0;
// 获取画面的几何信息, 保存thread local
var pendingActions = msgq.CheckOut();
if (pendingActions.Length == 0)
{
long end = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
long delta = end - beg;
int ms = (int)(period - delta);
Thread.Sleep(ms);
continue; // 注意不是执行剩余的循环体, 而是开始新的循环.
}
// 「打草稿」阶段
foreach (var act in pendingActions)
{
if (act is ViewportMessage)
{
if (act is MoveMessage)
{
var a = act as MoveMessage;
dX += a.dXScreen;
dY += a.dYScreen;
}
else if (act is ZoomMessage)
{
var a = act as ZoomMessage;
viewport_curr.Zoom(a.nScroll, a.XScreen, a.YScreen);
}
else if (act is ResizeMessage)
{
var a = act as ResizeMessage;
viewport_curr.Resize(a.WScreen, a.HScreen);
}
else if (act is ThumbJumpMessage)
{
var a = act as ThumbJumpMessage;
viewport_curr.X = a.CenterXScreen * thumbDensity - viewport_curr.ToActualPixel(viewport_curr.OutW) / 2;
viewport_curr.Y = a.CenterYScreen * thumbDensity - viewport_curr.ToActualPixel(viewport_curr.OutH) / 2;
}
}
else if (act is PolylineMessage)
{
drew = true;
if (act is AddVertexMessage)
{
var a = act as AddVertexMessage;
double x = viewport_curr.X + viewport_curr.ToActualPixel(a.x);
double y = viewport_curr.Y + viewport_curr.ToActualPixel(a.y);
poly.AddVertex(a.idv, x, y, a.prev);
}
else if (act is ConnectVertexMessage)
{
var a = act as ConnectVertexMessage;
poly.ConnectVertex(a.idv1, a.idv2);
}
else if (act is MoveVertexMessgae)
{
var a = act as MoveVertexMessgae;
double dx = viewport_curr.ToActualPixel(a.dx);
double dy = viewport_curr.ToActualPixel(a.dy);
poly.MoveVertex(a.idv, dx, dy);
}
else if (act is DeleteVertexMessage)
{
var a = act as DeleteVertexMessage;
poly.DeleteVertex(a.idv);
}
}
else if (act is ComputeMessage)
{
if (act is Ki67Message)
{
var a = act as Ki67Message;
if (!quantTasks.ContainsKey(a.idv))
{
poly.QueryChain(a.idv, out List <double> x, out List <double> y, out BoundingBox bb);
byte[] data = slide.LoadRegionBMP(bb);
//using (var fs = new FileStream(@"C:\Users\winston\Pictures\aaa.bmp", FileMode.Create))
//{
// fs.Write(data, 0, data.Length);
//}
var task = new Ki67Task(a.idv, data, x, y);
quantTasks.Add(a.idv, task);
task.Start();
}
}
}
else if (act is FileMessage)
{
if (act is LoadSlideMessage)
{
var a = act as LoadSlideMessage;
slide.Open(a.Path, viewport_curr);
viewport_curr.OutW = a.WCanvas;
viewport_curr.OutH = a.HCanvas;
canvasThumb.Dispatcher.Invoke(() =>
{
using (var ms = new System.IO.MemoryStream(slide.LoadThumbJPG()))
{
var bi = new BitmapImage();
bi.BeginInit();
bi.CacheOption = BitmapCacheOption.OnLoad;
bi.StreamSource = ms;
bi.EndInit();
UniformToFill(viewport_curr.SlideW, viewport_curr.SlideH,
out double thumbW, out double thumbH);
(canvasThumb.Width, canvasThumb.Height) = (thumbW, thumbH);
canvasThumb.UpdateLayout();
imageThumb.ImageSource = bi;
//Console.WriteLine($"actualWH=({canvasThumb.ActualWidth},{canvasThumb.ActualHeight})");
}
}, System.Windows.Threading.DispatcherPriority.Send);
}
else if (act is CloseSlideMessage)
{
//poly.Close();
slide.Close();
}
}
}
viewport_curr.Move(dX, dY);
#region 摆放前端对象
byte[] img = slide.LoadRegionBMP(viewport_curr);
List <Object> items = poly.LoadRegionShapes(viewport_curr);
canvasMain.Dispatcher.Invoke(() =>
{
#region 重新绘制矢量物体
canvasMain.Children.Clear();
foreach (var item in items)
{
if (item is V)
{
var v = item as V;
DrawVertex(v, viewport_curr);
}
else if (item is E)
{
var e = item as E;
DrawEdge(e, viewport_curr);
}
}
canvasMain.UpdateLayout();
#endregion
#region 重新绘制位图
BitmapImage bi = null;
using (var ms = new System.IO.MemoryStream(img))
{
bi = new BitmapImage();
bi.BeginInit();
bi.CacheOption = BitmapCacheOption.OnLoad;
bi.StreamSource = ms;
bi.EndInit();
}
imageMain.ImageSource = bi;
#endregion
}, System.Windows.Threading.DispatcherPriority.Send);
canvasThumb.Dispatcher.Invoke(() =>
{
canvasThumb.Children.Clear();
DrawOnThumb(canvasThumb, viewport_curr);
}, System.Windows.Threading.DispatcherPriority.Send);
viewport_prev.CopyFrom(viewport_curr);
var scores = new Dictionary <int, double>();
var to_remove = new List <int>();
foreach (var _ in quantTasks)
{
var t = _.Value;
if (!double.IsNaN(t.Result))
{
scores.Add(t.HeadId, t.Result);
to_remove.Add(t.HeadId);
}
}
foreach (var _ in to_remove)
{
quantTasks.Remove(_);
}
scoreBoard.Dispatcher.Invoke(() =>
{
foreach (var _ in scores)
{
scoreBoard.Text = $"PolygonId: {_.Key}. Ki67={(int)(_.Value * 100)}%\r\n";
}
}, System.Windows.Threading.DispatcherPriority.Send);
// 如果end-beg小于period, 则忙等到period
for (long end = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(); // 当前帧结束的时间
end - beg < period;
end = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds())
{
Thread.Sleep(1); // 降低cpu占用率. 改善阅览体验.
}
#endregion
}
}