/// <summary>
/// 打开一张扫描切片
/// </summary>
/// <param name="path"></param>
/// <param name="info">输出. 封装了切片信息</param>
/// <returns>切片的宽高 (slideW, slideH) </returns>
public void Open(string path, object info)
{
if (!(info is SceneGeometry))
{
throw new InvalidOperationException("Info is not MapGeometry type.");
}
if (OpenSlideImage.DetectFormat(path) == null)
{
throw new InvalidOperationException($"<<{path}>> is NOT a digital slide!");
}
slide = OpenSlideImage.Open(path);
SceneGeometry sg = info as SceneGeometry;
sg.Init();
sg.SlideW = (int)slide.Width;
sg.SlideH = (int)slide.Height;
sg.L = 0;
sg.X = sg.SlideW / 2;
sg.Y = sg.SlideH / 2;
sg.NumL = slide.LevelCount;
for (int i = 0; i < sg.NumL; ++i)
{
sg.SetDensityAtLevel(i, slide.GetLevelDownsample(i));
}
thumbJpgBuf = slide.GetThumbnailAsJpeg(1024, 90);
}
public List <Drawable> LoadRegionShapes(SceneGeometry sg)
{
double left, top, right, bottom;
(left, top, right, bottom) = (sg.X, sg.Y, sg.X + sg.ToActualPixel(sg.OutW), sg.Y + sg.ToActualPixel(sg.OutH));
//Console.WriteLine($"Loading w={right - left}(from {left} to {right}), h={bottom - top}(from {top} to {bottom})");
var toShow = new List <Drawable>();
foreach (var _ in polylines)
{
var id = _.Key;
var pl = _.Value;
if (pl.NumPoints == 1)
{
double x, y;
(x, y) = (pl.Points[0].Item1, pl.Points[0].Item2);
if (Graphics.EncodePoint(left, top, right, bottom, x, y) == 0)
{
toShow.Add(new Point(x - left, y - top, id));
}
}
else if (pl.NumPoints > 1)
{
for (int i = 0; i < pl.NumPoints - 1; i = i + 1)
{
double xa, ya, xb, yb;
(xa, ya, xb, yb) = (pl.Points[i].Item1, pl.Points[i].Item2, pl.Points[i + 1].Item1, pl.Points[i + 1].Item2);
Graphics.ClipByWindow(
left, top, right, bottom,
xa, ya, xb, yb,
out double x1, out double y1, out double x2, out double y2
);
//Console.WriteLine($"Rectangle({left - left:0.0}, {top - top:0.0}, {right - left:0.0}, {bottom - top:0.0}) " +
// $"Cut({xa - left:0.0}, {ya - top:0.0} -> {xb - left:0.0}, {yb - top:0.0}), " +
// $"Yield({x1 - left:0.0}, {y1 - top:0.0} -> {x2 - left:0.0}, {y2 - top:0.0})");
if (!double.IsNaN(x1))
{
if (x1 == y1 && x2 == y2)
{
toShow.Add(new Point(x1 - left, y1 - top, id));
}
else
{
toShow.Add(new LineSegment(x1 - left, y1 - top, x2 - left, y2 - top, id));
}
}
}
}
}
return(toShow);
}
public void CopyFrom(SceneGeometry sg)
{
(X, Y, L, NumL, OutW, OutH, SlideW, SlideH) =
(sg.X, sg.Y, sg.L, sg.NumL,
sg.OutW, sg.OutH, sg.SlideW, sg.SlideH);
if (pixelDensity == null)
{
pixelDensity = new double[BUFLEN];
}
Array.Copy(sg.pixelDensity, pixelDensity, BUFLEN);
}
/// <summary>
/// 根据sg所描述的位置、大小和倍率, 读取一个区域
/// </summary>
/// <param name="sg"></param>
/// <returns></returns>
public byte[] LoadRegionBMP(SceneGeometry sg)
{
Helper.InitBgraHeader(imgBmpBuf, (int)sg.OutW, (int)sg.OutH);
slide.DangerousReadRegion(sg.L, (int)sg.X, (int)sg.Y, (int)sg.OutW, (int)sg.OutH, ref imgBmpBuf[Helper.BMP_BGRA_DATA_OFFSET]);
return(imgBmpBuf);
}
public void Update(SceneGeometry sg)
{
X = sg.X; Y = sg.Y;
L = sg.L; OutW = sg.L; OutH = sg.OutH;
}
public SceneGeometry(SceneGeometry sg)
{
CopyFrom(sg);
}