r626: no message

[ctsim.git] / include / projections.h

diff --git a/include/projections.h b/include/projections.h
index 610cae76d3dc9b63189fba45a15e65739e3bfc9b..39cb09a7a67446a3723a7cb06a6921bc6ddc68a7 100644 (file)
--- a/include/projections.h
+++ b/include/projections.h
@@ -9,7 +9,7 @@
 **  This is part of the CTSim program
 **  Copyright (c) 1983-2001 Kevin Rosenberg
 **
-**  $Id: projections.h,v 1.27 2001/03/02 02:08:14 kevin Exp $
+**  $Id: projections.h,v 1.28 2001/03/10 23:14:15 kevin Exp $
 **
 **
 **  This program is free software; you can redistribute it and/or modify
@@ -38,6 +38,36 @@ class fnetorderstream;
 #include "imagefile.h"
 #include <complex>
 
+//used for rebinning divergent beam projections to parallel
+class ParallelRaysumCoordinate {  
+public:
+  double m_dT;      // Distance from center of origin
+  double m_dTheta;  // perpendicular angle to origin
+  int m_iViewNum;   // View number for this raysum
+  int m_iDetNum;    // Detector number for this raysum
+
+  bool lessThanT (ParallelRaysumCoordinate& rCompare)
+  {return m_dT < rCompare.m_dT; }
+  bool lessThanTheta (ParallelRaysumCoordinate& rCompare)
+  {return m_dTheta < rCompare.m_dTheta; }
+};
+
+class ParallelRaysums {
+private:
+  ParallelRaysumCoordinate** m_ppCoordinates;
+  int m_iNumCoordinates;
+
+public:
+  ParallelRaysums (Projections* pProjections);
+  ~ParallelRaysums ();
+
+  ParallelRaysumCoordinate** getCoordinates() {return m_ppCoordinates;}
+  int getNumCoordinates() const {return m_iNumCoordinates;}
+  void getLimits (double* dMinT, double* dMaxT, double* dMinTheta, double* dMaxTheta) const;
+};
+
+
+
 // Projections
 class Projections
 {
@@ -74,6 +104,8 @@ class Projections
   bool detarrayRead (fnetorderstream& fs, DetectorArray& darray, const int view_num);
   bool detarrayWrite (fnetorderstream& fs, const DetectorArray& darray, const int view_num);
 
+  bool interpolateToParallel();
+
   bool convertPolar (ImageFile& rIF, int iInterpolation);
   bool convertFFTPolar (ImageFile& rIF, int iInterpolation, int iZeropad);
   bool calcArrayPolarCoordinates (unsigned int nx, unsigned int ny, double** ppdView, double** ppdDet);