** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: phantom.cpp,v 1.10 2000/07/22 15:45:33 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
#include "ct.h"
+const int PhantomElement::POINTS_PER_CIRCLE = 360;\r
+const double PhantomElement::SCALE_PELEM_EXTENT=0.005; // increase pelem limits by 0.5% \r
const int Phantom::PHM_INVALID = -1;
const int Phantom::PHM_HERMAN = 0;
-const int Phantom::PHM_BHERMAN = 1;
-const int Phantom::PHM_ROWLAND = 2;
-const int Phantom::PHM_BROWLAND = 3;
+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"},
- {"bherman"},
- {"rowland"},
- {"browland"},
+ {"herman-b"},
+ {"shepp-logan"},
+ {"shepp-logan-b"},
{"unitpulse"},
};
const char* Phantom::s_aszPhantomTitle[] =
{
{"Herman Head"},
- {"Herman Head Bordered"},
- {"Rowland Head"},
- {"Rowland Head Bordered"},
+ {"Herman Head (Bordered)"},
+ {"Shepp-Logan"},
+ {"Shepp-Logan (Bordered)"},
{"Unit Pulse"},
};
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;
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);
}
void
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;
- sgp2_close (gid);
+ sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow);
+
+ draw (sgp);
}
#endif
#ifdef HAVE_SGP
void
-Phantom::draw () 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
*/
void
-Phantom::addStdRowland ()
+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);
}
void
-Phantom::addStdRowlandBordered ()
+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
Phantom::addStdHermanBordered ()
{
addStdHerman();
- addPElem ("ellipse", 0.000, 0.000, 8.650, 8.650, 0.00, 0.000);
+ addPElem ("rectangle", 0.000, 0.00, 10.780, 8.110, 90.00, 0.000);
}
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();
ImageFileArray v = im.getArray();
for (int ix = 0; ix < colCount; ix++)
- for (int iy = 0; iy < ny; iy++)
- v[ix][iy] = 0;
+ 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 (rPElem.isPointInside (xi, yi, PHM_COORD) == TRUE)
- v[ix][iy] += rPElem.atten();
+ 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 */
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);
+
+\r
+ for (int ix = 0; ix < colCount; ix++) {
+ int iColStore = ix;\r
+ if (bStoreAtColumnPos)\r
+ iColStore += colStart;\r
+ for (int iy = 0; iy < ny; iy++)
+ v[iColStore][iy] *= factor;\r
+ }
}
}
projects / ctsim.git / blobdiff