public static void GetRingAndDetectorForXY(int aPosition, UInt16 XPlus, UInt16 XMinus, UInt16 YPlus, UInt16 YMinus,
out int Ring, out int Detector)
{
var blockNumber = (aPosition >> 4) & 0xFF;
var ringGroup = aPosition & 0xF;
var i = blockNumber * 15 + EventConverter.iForX(XPlus, XMinus);
var j = ringGroup * 15 + EventConverter.jForY(YPlus, YMinus);
Detector = i;
Ring = j;
}
public bool Detect(Photon ph, out PETSingleEvent se)
{
se = new PETSingleEvent();
if (ph.Status != stat.Finished)
{
return(false);
}
//to cylindrical
double azimuthalAngle = Math.Atan2(ph.CurrentPosition.Y, ph.CurrentPosition.X);
if (azimuthalAngle < 0)
{
azimuthalAngle += 2 * Math.PI;
}
//double rc = Math.Sqrt(ph.CurrentPosition.X * ph.CurrentPosition.X + ph.CurrentPosition.Y * ph.CurrentPosition.Y + ph.CurrentPosition.Z * ph.CurrentPosition.Z) * Math.Sin(ph.Theta);
double rc = Math.Sqrt(ph.CurrentPosition.X * ph.CurrentPosition.X + ph.CurrentPosition.Y * ph.CurrentPosition.Y);
double z0 = ph.CurrentPosition.Z;
var tmpAngle = Math.Asin(rc / this.RingRadius * Math.Sin(azimuthalAngle - ph.Phi));
//var tmpAngle = this.Phi - azimuthalAngle - Math.Asin(rc / ringRadius * Math.Sin(azimuthalAngle - this.Phi));
var psi = tmpAngle + ph.Phi; //угол регистрации
if (psi < 0)
{
psi += 2 * Math.PI;
}
if (psi >= 2 * Math.PI)
{
psi -= 2 * Math.PI;
}
var block = (int)(psi / (2 * Math.PI) * this.BlocksCount); // номер блока детекторов
var r1 = Math.Sqrt(this.RingRadius * this.RingRadius + rc * rc - 2 * this.RingRadius * rc * Math.Cos(azimuthalAngle - psi));
var dz = (r1 / Math.Tan(ph.Theta)) / this.BlockSize;
z0 /= this.BlockSize;
var blockRing = (int)Math.Floor(z0 + dz + this.RingsCount / 2.0); // номер кольца блоков
//double s = Math.Sqrt((this.CurrentPosition.X - ringRadius * Math.Cos(psi)) * (this.CurrentPosition.X - ringRadius * Math.Cos(psi)) +
// (this.CurrentPosition.Y - ringRadius * Math.Sin(psi)) * (this.CurrentPosition.Y - ringRadius * Math.Sin(psi)) +
// (this.CurrentPosition.Z - dz * blockSide) * (this.CurrentPosition.Z - dz * blockSide)) + this.Path;
//this.Time += s / (3e11);
if (blockRing >= 0 && blockRing < this.RingsCount)
{
se.Position = (UInt16)(((block & 0x3F) << 4) | (blockRing & 0xF));
se.Timestamp = (UInt32)(ph.Time);
var I = (byte)((psi - block * 2 * Math.PI / this.BlocksCount) / (2 * Math.PI / (this.BlocksCount * this.DetectorsPerBlock)));
var J = (byte)((z0 + dz + this.RingsCount / 2.0) * this.DetectorsPerBlock) % this.DetectorsPerBlock;
EventConverter.GetXYFromIJ(I, (byte)J, ph.Energy, out se.XPlus, out se.XMinus, out se.YPlus, out se.YMinus);
return(true);
}
return(false);
}
public void Build(string path)
{
var sins = new double[numSins][, ];
for (int i = 0; i < numSins; i++)
{
sins[i] = new double[indexer.NumDirs, indexer.NumLines];
}
Bitmap bmp = new Bitmap(1024, 1024);
Graphics gr = Graphics.FromImage(bmp);
gr.TranslateTransform(bmp.Width / 2f, bmp.Height / 2f);
List <string> fileList = new List <string>();
if (Directory.Exists(path))
{
DirectoryInfo di = new DirectoryInfo(path);
FileSystemInfo[] files = di.GetFileSystemInfos();
foreach (var file in files)
{
fileList.Add(file.FullName);
}
}
foreach (var file in fileList)
{
var clist = WorkWithFiles.ReadCoincList(file);
foreach (var c in clist)
{
PETDigitalCoincidenceTOF cIJ = new PETDigitalCoincidenceTOF();
EventConverter.CalculateDigitalCoincidenceTOF(c, ref cIJ);
int Ring1 = indexer.GetRing(c.Position1, cIJ.J1);
int Ring2 = indexer.GetRing(c.Position2, cIJ.J2);
var sinidx = Ring1 + Ring2;
if (sinidx >= numSins)
{
continue;
}
int Dir = indexer.GetDir(c.Position1, c.Position2, cIJ.I1, cIJ.I2);
int Line = indexer.GetLine(c.Position1, c.Position2, cIJ.I1, cIJ.I2);
//if (isDebug && ++cnt % 1000 == 0)
//{
// gr.DrawLine(Pens.White, 410 * (float)Math.Cos(Math.PI * Detector1 / 360), 410 * (float)Math.Sin(Math.PI * Detector1 / 360),
// 410 * (float)Math.Cos(Math.PI * Detector2 / 360), 410 * (float)Math.Sin(Math.PI * Detector2 / 360));
//}
if (Line < 0)
{
continue;
}
sins[sinidx][Dir, Line]++;
}
}
if (!Directory.Exists(outDir))
{
Directory.CreateDirectory(outDir);
}
for (int i = 0; i < numSins; i++)
{
Sinogram sino = new Sinogram(sins[i], AnglesDistribution.Uniform(0, Math.PI, indexer.NumDirs));
Stream ostream = File.Create(string.Format("{0}\\{1}", outDir, string.Format("{0}.sg", i)));
//using (StreamWriter w = new StreamWriter(ostream, Encoding.UTF8))
using (ostream)
{
Sinogram.SaveSinogramToStream(ostream, sino);
}
Sinogram.DumpSinogram(sins[i], string.Format("{0}\\{1}.png", outDir, i));
//if (isDebug)
// bmp.Save(string.Format("{0}\\lines.png", arg.OutDir));
}
}
