1 /*****************************************************************************
5 ** Purpose: Scanner header file
6 ** Programmer: Kevin Rosenberg
7 ** Date Started: July 1, 1984
9 ** This is part of the CTSim program
10 ** Copyright (C) 1983-2000 Kevin Rosenberg
12 ** $Id: scanner.h,v 1.5 2000/06/25 17:32:24 kevin Exp $
15 ** This program is free software; you can redistribute it and/or modify
16 ** it under the terms of the GNU General Public License (version 2) as
17 ** published by the Free Software Foundation.
19 ** This program is distributed in the hope that it will be useful,
20 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
21 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 ** GNU General Public License for more details.
24 ** You should have received a copy of the GNU General Public License
25 ** along with this program; if not, write to the Free Software
26 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 ******************************************************************************/
35 // Projections are collected along an array of ndet detectors. The data
36 // for these detectors is stored in the class DetectorArray
38 typedef float DetectorValue;
43 DetectorArray (const int ndet);
44 ~DetectorArray (void);
46 const int nDet(void) const {return m_nDet;}
47 const double viewAngle(void) const {return m_viewAngle;}
48 DetectorValue* detValues(void) {return m_detValues;}
49 const DetectorValue* detValues(void) const {return m_detValues;}
51 void setViewAngle (double viewAngle)
52 { m_viewAngle = viewAngle; }
55 DetectorValue* m_detValues; // Pointer to array of values recorded by detector
56 int m_nDet; // Number of detectors in array */
57 double m_viewAngle; // View angle in radians
59 DetectorArray& operator=(const DetectorArray& rhs); // assignment
60 DetectorArray (const DetectorArray& rhs); // copy constructor
73 static const char GEOMETRY_PARALLEL_STR[] = "parallel";
74 static const char GEOMETRY_EQUILINEAR_STR[] = "equilinear";
75 static const char GEOMETRY_EQUIANGLE_STR[] = "equiangle";
77 Scanner (const Phantom& phm, const char* const geometryName, int nDet, int nView, int nSample, const double rot_anglen);
80 void collectProjections (Projections& proj, const Phantom& phm, const int start_view, const int trace);
82 void setNView (int nView);
84 const bool fail(void) const {return m_fail;}
85 const string& failMessage(void) const {return m_failMessage;}
86 const unsigned int nDet(void) const {return m_nDet;}
87 const unsigned int nView(void) const {return m_nView;}
88 const double phmLen(void) const {return m_phmLen;}
89 const double rotInc(void) const {return m_rotInc;}
90 const double detInc(void) const {return m_detInc;}
91 const double radius(void) const {return m_radius;}
97 GeometryID m_idGeometry;
98 unsigned int m_nDet; /* Number of detectors in array */
99 unsigned int m_nView; /* Number of rotated views */
100 unsigned int m_nSample; /* Number of rays per detector */
101 double m_detLen; /* Total length of detector array */
102 double m_rotLen; /* Rotation angle length in radians (norm 2PI) */
103 double m_detInc; /* Increment between centers of detectors */
104 double m_rotInc; /* Increment in rotation angle between views */
105 double m_radius; /* Radius of rotation. Distance from center of phm to center of det */
106 double m_phmLen; /* Maximum Length of phantom or area of interest */
109 double xd1,yd1,xd2,yd2; /* Coordinates of detector endpoints */
110 double xs1,ys1,xs2,ys2; /* Coordinates of source endpoints */
111 double angle; /* Starting angle */
114 static const int N_EXTRA_DETECTORS=4; /* Number of extra detectors widths when calculating detlen */
116 static GeometryID convertGeometryNameToID (const char* const geometryName);
118 void projectSingleView (const Phantom& phm, DetectorArray& darray, const double xd1, const double yd1, const double xd2, const double yd2, const double xs1, const double ys1, const double xs2, const double ys2);
120 double projectSingleLine (const Phantom& phm, const double x1, const double y1, const double x2, const double y2);
122 double projectLineAgainstPElem (const PhantomElement& pelem, const double x1, const double y1, const double x2, const double y2);
124 void traceShowParam (const char *label, const char *fmt, int row, int color, ...);
129 const static int RAYSUM_TRACE_ROW_TITLE=1;
130 const static int RAYSUM_TRACE_ROW_TITLE2=2;
131 const static int RAYSUM_TRACE_ROW_PHANT_ID=4;
132 const static int RAYSUM_TRACE_ROW_CHROMATIC=7;
133 const static int RAYSUM_TRACE_ROW_SCATTER=8;
134 const static int RAYSUM_TRACE_ROW_PHOT_STAT=9;
135 const static int RAYSUM_TRACE_ROW_NDET=12;
136 const static int RAYSUM_TRACE_ROW_NVIEW=13;
137 const static int RAYSUM_TRACE_ROW_SAMPLES=14;
138 const static int RAYSUM_TRACE_ROW_CURR_VIEW=17;
139 const static int RAYSUM_TRACE_ROW_ATTEN=18;