+class fnetorderstream;
+
+#include "array2dfile.h"
+#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;
+};
+