X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fphantom.cpp;h=9125e36be718af7ea36959b42bf5461cd673f0ab;hp=aff7b5d55d71f1ccd41f1f2633300d2e1c91dc77;hb=f7d2b7144f32a7bd157b7689022e62944b82fcc1;hpb=08f34bf3ba14d4f436f4d2ef0ee5af1d6eb266ac

diff --git a/libctsim/phantom.cpp b/libctsim/phantom.cpp
index aff7b5d..9125e36 100644
--- a/libctsim/phantom.cpp
+++ b/libctsim/phantom.cpp
@@ -9,7 +9,7 @@
 **  This is part of the CTSim program
 **  Copyright (C) 1983-2000 Kevin Rosenberg
 **
-**  $Id: phantom.cpp,v 1.5 2000/06/25 17:32:24 kevin Exp $
+**  $Id: phantom.cpp,v 1.23 2000/12/21 03:40:58 kevin Exp $
 **
 **  This program is free software; you can redistribute it and/or modify
 **  it under the terms of the GNU General Public License (version 2) as
@@ -27,12 +27,42 @@
 
 #include "ct.h"
 
+const int PhantomElement::POINTS_PER_CIRCLE = 360;
+const double PhantomElement::SCALE_PELEM_EXTENT=0.005;  // increase pelem limits by 0.5% 
+
+const int Phantom::PHM_INVALID = -1;
+const int Phantom::PHM_HERMAN = 0;
+const int Phantom::PHM_B_HERMAN = 1;
+const int Phantom::PHM_SHEPP_LOGAN = 2;
+const int Phantom::PHM_B_SHEPP_LOGAN = 3;
+const int Phantom::PHM_UNITPULSE = 4;
+
+const char* Phantom::s_aszPhantomName[] = 
+{
+  {"herman"},
+  {"herman-b"},
+  {"shepp-logan"},
+  {"shepp-logan-b"},
+  {"unitpulse"},
+};
+
+const char* Phantom::s_aszPhantomTitle[] = 
+{
+  {"Herman Head"},
+  {"Herman Head (Bordered)"},
+  {"Shepp-Logan"},
+  {"Shepp-Logan (Bordered)"},
+  {"Unit Pulse"},
+};
+
+const int Phantom::s_iPhantomCount = sizeof(s_aszPhantomName) / sizeof(const char*);
+
 
 // CLASS IDENTIFICATION
-//   Phanton
+//   Phantom
 //
 
-Phantom::Phantom (void)
+Phantom::Phantom ()
 {
   init ();
 }
@@ -45,7 +75,7 @@ Phantom::Phantom (const char* const phmName)
 }
 
 void 
-Phantom::init (void)
+Phantom::init ()
 {
   m_nPElem = 0;
   m_xmin = 1E30;
@@ -58,7 +88,7 @@ Phantom::init (void)
   m_id = PHM_INVALID;
 }
 
-Phantom::~Phantom (void)
+Phantom::~Phantom ()
 {
   for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
     delete *i;
@@ -67,39 +97,37 @@ Phantom::~Phantom (void)
 
 
 const char*
-Phantom::convertPhantomIDToName (const PhantomID phmID)
+Phantom::convertPhantomIDToName (int phmID)
 {
-  const char *name = "";
+  static const char *name = "";
 
-  if (phmID == PHM_HERMAN)
-    name = PHM_HERMAN_STR;
-  else if (phmID == PHM_BHERMAN)
-    name = PHM_BHERMAN_STR;
-  else if (phmID == PHM_ROWLAND)
-    name = PHM_ROWLAND_STR;
-  else if (phmID == PHM_BROWLAND)
-    name = PHM_BROWLAND_STR;
-  else if (phmID == PHM_UNITPULSE)
-    name = PHM_UNITPULSE_STR;
+  if (phmID >= 0 && phmID < s_iPhantomCount)
+      return (s_aszPhantomName[phmID]);
 
   return (name);
 }
+
+const char*
+Phantom::convertPhantomIDToTitle (int phmID)
+{
+  static const char *title = "";
+
+  if (phmID >= 0 && phmID < s_iPhantomCount)
+      return (s_aszPhantomName[phmID]);
+
+  return (title);
+}
       
-Phantom::PhantomID
+int
 Phantom::convertNameToPhantomID (const char* const phmName) 
 {
-  PhantomID id = PHM_INVALID;
+  int id = PHM_INVALID;
 
-  if (strcasecmp (phmName, PHM_HERMAN_STR) == 0)
-    id = PHM_HERMAN;
-  else if (strcasecmp (phmName, PHM_BHERMAN_STR) == 0)
-    id = PHM_BHERMAN;
-  else if (strcasecmp (phmName, PHM_ROWLAND_STR) == 0)
-    id = PHM_ROWLAND;
-  else if (strcasecmp (phmName, PHM_BROWLAND_STR) == 0)
-    id = PHM_BROWLAND;
-  else if (strcasecmp (phmName, PHM_UNITPULSE_STR) == 0)
-    id = PHM_UNITPULSE;
+  for (int i = 0; i < s_iPhantomCount; i++)
+      if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) {
+	  id = i;
+	  break;
+      }
 
   return (id);
 }
@@ -108,7 +136,7 @@ Phantom::convertNameToPhantomID (const char* const phmName)
 bool
 Phantom::createFromPhantom (const char* const phmName)
 {
-  PhantomID phmid = convertNameToPhantomID (phmName);
+  int phmid = convertNameToPhantomID (phmName);
   if (phmid == PHM_INVALID) {
     m_fail = true;
     m_failMessage = "Invalid phantom name ";
@@ -118,24 +146,25 @@ Phantom::createFromPhantom (const char* const phmName)
 
   m_name = phmName;
   createFromPhantom (phmid);
+  return true;
 }
 
 bool
-Phantom::createFromPhantom (const PhantomID phmid)
+Phantom::createFromPhantom (const int phmid)
 {
   switch (phmid) 
     {
     case PHM_HERMAN:
       addStdHerman();
       break;
-    case PHM_BHERMAN:
+    case PHM_B_HERMAN:
       addStdHermanBordered();
       break;
-    case PHM_ROWLAND:
-      addStdRowland();
+    case PHM_SHEPP_LOGAN:
+      addStdSheppLogan();
       break;
-    case PHM_BROWLAND:
-      addStdRowlandBordered ();
+    case PHM_B_SHEPP_LOGAN:
+      addStdSheppLoganBordered();
       break;
     case PHM_UNITPULSE:
       m_composition = P_UNIT_PULSE;
@@ -169,34 +198,32 @@ Phantom::createFromPhantom (const PhantomID phmid)
 bool
 Phantom::createFromFile (const char* const fname)
 {
-  bool stoploop = false;
-  bool retval = false;
+  bool bGoodFile = true;
   FILE *fp;
 
   if ((fp = fopen (fname, "r")) == NULL)
     return (false);
 
-  do {
+  m_name = fname;
+
+  while (1) {
     double cx, cy, u, v, rot, dens;
     char pelemtype[80];
-    int n = fscanf (fp, "%79s %lf %lf %lf %lf %lf %lf",
-		pelemtype, &cx, &cy, &u, &v, &rot, &dens);
+
+    int status = fscanf (fp, "%79s %lf %lf %lf %lf %lf %lf", pelemtype, &cx, &cy, &u, &v, &rot, &dens);
     
-    if (n == EOF || n == 0) {	/* end of file */
-      stoploop = true;
-      retval = false;
-    } else if (n != 7) {
-      stoploop = true;
-      retval = false;
-    } else {
-      addPElem (pelemtype, cx, cy, u, v, rot, dens);
-      retval = true;
+    if (status == static_cast<int>(EOF)) 
+      break;
+    else if (status != 7) {
+      sys_error (ERR_WARNING, "Insufficient fields reading phantom file %s [Phantom::createFromFile]", fname);
+      bGoodFile = false;
     }
-  } while (stoploop == false);
+    addPElem (pelemtype, cx, cy, u, v, rot, dens);
+  }
   
   fclose (fp);
 
-  return (retval);
+  return (bGoodFile);
 }
 
 
@@ -247,7 +274,7 @@ Phantom::addPElem (const char *type, const double cx, const double cy, const dou
  */
 
 void 
-Phantom::print (void) const
+Phantom::print () const
 {
   printf("PRINTING Phantom\n\n");
   printf("number of pelems in Phantom = %d\n", m_nPElem);
@@ -277,33 +304,32 @@ Phantom::print (void) const
 
 #ifdef HAVE_SGP
 void 
-Phantom::show (void) const
+Phantom::show () const
 {
-  double wsize = m_xmax - m_xmin;
-  double xmin = m_xmin;
-  double ymin = m_ymin;
-  double xmax, ymax;
-  SGP_ID gid;
+  SGPDriver driverSGP ("Phantom Show");
+  SGP sgp (driverSGP);
 
-  if ((m_ymax - m_ymin) > wsize)
-      wsize = m_ymax - m_ymin;
-  wsize *= 1.1;
+  show (sgp);
 
-  xmax = xmin + wsize;
-  ymax = ymin + wsize; 
-  
-  printf("Drawing Phantom:\n\n");
-  printf("    data limits: %9.3g, %9.3g, %9.3g, %9.3g\n",
-	 m_xmin, m_ymin, m_xmax, m_ymax);
-  printf("    window size: %9.3g, %9.3g, %9.3g, %9.3g\n",
-	 xmin, ymin, xmax, ymax);
+  std::cout << "Press return to continue";
+  cio_kb_getc();
+}
 
-  gid = sgp2_init(0, 0, "Phantom Show");
-  sgp2_window (xmin, ymin, xmax, ymax);
+void 
+Phantom::show (SGP& sgp) const
+{
+  double wsize = m_xmax - m_xmin;
+  if ((m_ymax - m_ymin) > wsize) 
+      wsize = m_ymax - m_ymin;
+  wsize *= 1.01;
+  double halfWindow = wsize / 2;
 
-  draw();
+  double xcent = m_xmin + (m_xmax - m_xmin) / 2;
+  double ycent = m_ymin + (m_ymax - m_ymin) / 2;
 
-  termgrf2();
+  sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow);
+
+  draw (sgp);
 }
 #endif
 
@@ -317,16 +343,16 @@ Phantom::show (void) const
 
 #ifdef HAVE_SGP
 void 
-Phantom::draw (void) const
+Phantom::draw (SGP& sgp) const
 {
   for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++)
-    sgp2_polyline_abs ((*i)->xOutline(), (*i)->yOutline(), (*i)->nOutlinePoints());
+    sgp.polylineAbs ((*i)->xOutline(), (*i)->yOutline(), (*i)->nOutlinePoints());
 }
 #endif
 
 
 /* NAME
- *   addStdRowland		Make head phantom of S.W. Rowland
+ *   addStdSheppLogan	Make head phantom of Shepp-Logan
  *
  * REFERENCES
  *   S. W. Rowland, "Computer Implementation of Image Reconstruction
@@ -335,26 +361,26 @@ Phantom::draw (void) const
  */
 
 void 
-Phantom::addStdRowland (void)
+Phantom::addStdSheppLogan ()
 {
-  addPElem("ellipse",  0.0000,  0.0000, 0.6900,  0.9200,   0.0,  1.00);
-  addPElem("ellipse",  0.0000, -0.0184, 0.6624,  0.8740,   0.0, -0.98);
-  addPElem("ellipse",  0.2200,  0.0000, 0.1100,  0.3100, -18.0, -0.02);
-  addPElem("ellipse", -0.2200,  0.0000, 0.1600,  0.4100,  18.0, -0.02);
-  addPElem("ellipse",  0.0000,  0.3500, 0.2100,  0.2500,   0.0,  0.01);
-  addPElem("ellipse",  0.0000,  0.1000, 0.0460,  0.0460,   0.0,  0.01);
-  addPElem("ellipse",  0.0000, -0.1000, 0.0460,  0.0460,   0.0,  0.01);
-  addPElem("ellipse", -0.0800, -0.6050, 0.0460,  0.0230,   0.0,  0.01);
-  addPElem("ellipse",  0.0000, -0.6050, 0.0230,  0.0230,   0.0,  0.01);
-  addPElem("ellipse",  0.0600, -0.6050, 0.0230,  0.0230,   0.0,  0.01);
-  addPElem("ellipse",  0.5538, -0.3858, 0.0330,  0.2060, -18.0,  0.03);
+  addPElem ("ellipse",  0.0000,  0.0000, 0.6900,  0.9200,   0.0,  1.00);
+  addPElem ("ellipse",  0.0000, -0.0184, 0.6624,  0.8740,   0.0, -0.98);
+  addPElem ("ellipse",  0.2200,  0.0000, 0.1100,  0.3100, -18.0, -0.02);
+  addPElem ("ellipse", -0.2200,  0.0000, 0.1600,  0.4100,  18.0, -0.02);
+  addPElem ("ellipse",  0.0000,  0.3500, 0.2100,  0.2500,   0.0,  0.01);
+  addPElem ("ellipse",  0.0000,  0.1000, 0.0460,  0.0460,   0.0,  0.01);
+  addPElem ("ellipse",  0.0000, -0.1000, 0.0460,  0.0460,   0.0,  0.01);
+  addPElem ("ellipse", -0.0800, -0.6050, 0.0460,  0.0230,   0.0,  0.01);
+  addPElem ("ellipse",  0.0000, -0.6050, 0.0230,  0.0230,   0.0,  0.01);
+  addPElem ("ellipse",  0.0600, -0.6050, 0.0230,  0.0230,   0.0,  0.01);
+  addPElem ("ellipse",  0.5538, -0.3858, 0.0330,  0.2060, -18.0,  0.03);
 }
 
 void 
-Phantom::addStdRowlandBordered (void)
+Phantom::addStdSheppLoganBordered ()
 {
-  addStdRowland ();
-  addPElem ("ellipse", 0.000, 0.0000, 0.7500, 1.000, 0.0, 0.00);
+  addStdSheppLogan ();
+  addPElem ("rectangle", 0.000, 0.0000, 0.8600, 1.150, 0.0, 0.00);
 }
 
 /* NAME
@@ -366,29 +392,30 @@ Phantom::addStdRowlandBordered (void)
  */
 
 void 
-Phantom::addStdHerman (void)
-{
-  addPElem("ellipse",  0.000,  1.50,  0.375, 0.3000,  90.00, -0.003);
-  addPElem("ellipse",  0.675, -0.75,  0.225, 0.1500, 140.00,  0.010);
-  addPElem("ellipse",  0.750,  1.50,  0.375, 0.2250,  50.00,  0.003);
-  addPElem("segment",  1.375, -7.50,  1.100, 0.6250,  19.20, -0.204);
-  addPElem("segment",  1.375, -7.50,  1.100, 4.3200,  19.21,  0.204);
-  addPElem("segment",  0.000, -2.25,  1.125, 0.3750,   0.00, -0.003);
-  addPElem("segment",  0.000, -2.25,  1.125, 3.0000,   0.00,  0.003);
-  addPElem("segment", -1.000,  3.75,  1.000, 0.5000, 135.00, -0.003);
-  addPElem("segment", -1.000,  3.75,  1.000, 3.0000, 135.00,  0.003);
-  addPElem("segment",  1.000,  3.75,  1.000, 0.5000, 225.00, -0.003);
-  addPElem("segment",  1.000,  3.75,  1.000, 3.0000, 225.00,  0.003);
-  addPElem("triangle", 5.025,  3.75,  1.125, 0.5000, 110.75,  0.206);
-  addPElem("triangle",-5.025,  3.75,  1.125, 0.9000,-110.75,  0.206);
-  addPElem("ellipse",  0.000,  0.00,  8.625, 6.4687,  90.00,  0.416);
-  addPElem("ellipse",  0.000,  0.00,  7.875, 5.7187,  90.00, -0.206);
+Phantom::addStdHerman ()
+{
+  addPElem ("ellipse",  0.000,  1.50,  0.375, 0.3000,  90.00, -0.003);
+  addPElem ("ellipse",  0.675, -0.75,  0.225, 0.1500, 140.00,  0.010);
+  addPElem ("ellipse",  0.750,  1.50,  0.375, 0.2250,  50.00,  0.003);
+  addPElem ("segment",  1.375, -7.50,  1.100, 0.6250,  19.20, -0.204);
+  addPElem ("segment",  1.375, -7.50,  1.100, 4.3200,  19.21,  0.204);
+  addPElem ("segment",  0.000, -2.25,  1.125, 0.3750,   0.00, -0.003);
+  addPElem ("segment",  0.000, -2.25,  1.125, 3.0000,   0.00,  0.003);
+  addPElem ("segment", -1.000,  3.75,  1.000, 0.5000, 135.00, -0.003);
+  addPElem ("segment", -1.000,  3.75,  1.000, 3.0000, 135.00,  0.003);
+  addPElem ("segment",  1.000,  3.75,  1.000, 0.5000, 225.00, -0.003);
+  addPElem ("segment",  1.000,  3.75,  1.000, 3.0000, 225.00,  0.003);
+  addPElem ("triangle", 5.025,  3.75,  1.125, 0.5000, 110.75,  0.206);
+  addPElem ("triangle",-5.025,  3.75,  1.125, 0.9000,-110.75,  0.206);
+  addPElem ("ellipse",  0.000,  0.00,  8.625, 6.4687,  90.00,  0.416);
+  addPElem ("ellipse",  0.000,  0.00,  7.875, 5.7187,  90.00, -0.206);
 }
 
 void
-Phantom::addStdHermanBordered (void)
+Phantom::addStdHermanBordered ()
 {
-  addPElem("ellipse", 0., 0., 6.6, 5.9, 90., 0.);
+  addStdHerman();
+  addPElem ("rectangle",  0.000, 0.00, 10.780, 8.110,  90.00, 0.000);
 }
 
 
@@ -406,11 +433,11 @@ Phantom::addStdHermanBordered (void)
 void
 Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace) const
 {
-  convertToImagefile (im, in_nsample, trace, 0, im.nx());
+  convertToImagefile (im, in_nsample, trace, 0, im.nx(), true);
 }
 
 void 
-Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace, const int colStart, const int colCount) const
+Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace, const int colStart, const int colCount, bool bStoreAtColumnPos) const
 {
   int nx = im.nx();
   int ny = im.ny();
@@ -451,28 +478,45 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac
 
   ImageFileArray v = im.getArray();
 
+  for (int ix = 0; ix < colCount; ix++)
+    for (int iy = 0; iy < ny; iy++) {
+      int iColStore = ix;
+      if (bStoreAtColumnPos)
+		iColStore += colStart;
+      v[iColStore][iy] = 0;
+    }
+
   double x_start = xmin + (colStart * xinc);
   for (PElemConstIterator pelem = m_listPElem.begin(); pelem != m_listPElem.end(); pelem++) {
-    double x, y, xi, yi;
-    int ix, iy, kx, ky;
-    for (ix = 0, x = x_start; ix < colCount; ix++, x += xinc) {
-      for (iy = 0, y = ymin; iy < ny; iy++, y += yinc) {
-	for (kx = 0, xi = x + kxofs; kx < nsample; kx++, xi += kxinc) {
-	  for (ky = 0, yi = y + kyofs; ky < nsample; ky++, yi += kyinc)
-	    if ((*pelem)->isPointInside (xi, yi, PHM_COORD) == TRUE)
-	      v[ix][iy] += (*pelem)->atten();
-	} // for kx
-      } /* for iy */
-    }  /* for ix */
+      const PhantomElement& rPElem = **pelem;
+      double x, y, xi, yi;
+      int ix, iy, kx, ky;
+      for (ix = 0, x = x_start; ix < colCount; ix++, x += xinc) {
+	int iColStore = ix;
+	if (bStoreAtColumnPos)
+	  iColStore += colStart;
+	for (iy = 0, y = ymin; iy < ny; iy++, y += yinc) {
+	  for (kx = 0, xi = x + kxofs; kx < nsample; kx++, xi += kxinc) {
+	    for (ky = 0, yi = y + kyofs; ky < nsample; ky++, yi += kyinc)
+	      if (rPElem.isPointInside (xi, yi, PHM_COORD) == TRUE)
+			v[iColStore][iy] += rPElem.atten();
+	      } // for kx
+	  } /* for iy */
+      }  /* for ix */
   }  /* for pelem */
   
 
   if (nsample > 1) {
-    double factor = 1.0 / (nsample * nsample);
-
-    for (int ix = 0; ix < colCount; ix++)
-      for (int iy = 0; iy < ny; iy++)
-	v[ix][iy] *= factor;
+    double factor = 1.0 / static_cast<double>(nsample * nsample);
+
+
+    for (int ix = 0; ix < colCount; ix++) {
+		int iColStore = ix;
+		if (bStoreAtColumnPos)
+			iColStore += colStart;
+		for (int iy = 0; iy < ny; iy++)
+			v[iColStore][iy] *= factor;
+	}
   }
 }
 
@@ -510,7 +554,7 @@ PhantomElement::PhantomElement (const char *type, const double cx, const double
 }
 
 
-PhantomElement::~PhantomElement (void)
+PhantomElement::~PhantomElement ()
 {
     delete m_xOutline;
     delete m_yOutline;
@@ -538,7 +582,7 @@ PhantomElement::convertNameToType (const char* const typeName)
 }
 
 void 
-PhantomElement::makeTransformMatrices (void)
+PhantomElement::makeTransformMatrices ()
 {
   GRFMTX_2D temp;
 
@@ -578,7 +622,7 @@ PhantomElement::makeTransformMatrices (void)
  */
 
 void
-PhantomElement::makeVectorOutline (void)
+PhantomElement::makeVectorOutline ()
 {
   double radius, theta, start, stop;
   double xfact, yfact;
@@ -822,7 +866,7 @@ PhantomElement::clipLineNormalizedCoords (double& x1, double& y1, double& x2, do
 //    false if point lies outside of pelem
 
 bool
-PhantomElement::isPointInside (double x, double y, const CoordType coord_type)
+PhantomElement::isPointInside (double x, double y, const CoordType coord_type) const
 {
   if (coord_type == PHM_COORD) {
     xform_mtx2 (m_xformPhmToObj, x, y);