** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: phantom.cpp,v 1.2 2000/06/19 19:54:23 kevin Exp $
+** $Id: phantom.cpp,v 1.8 2000/07/18 03:14:35 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
//
Phantom::Phantom (void)
+{
+ init ();
+}
+
+
+Phantom::Phantom (const char* const phmName)
+{
+ init ();
+ createFromPhantom (phmName);
+}
+
+void
+Phantom::init (void)
{
m_nPElem = 0;
m_xmin = 1E30;
m_ymax = -1E30;
m_diameter = 0;
m_composition = P_PELEMS;
+ m_fail = false;
+ m_id = PHM_INVALID;
}
-
Phantom::~Phantom (void)
{
for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
}
-void
-Phantom::create (const int phmid)
+const char*
+Phantom::convertPhantomIDToName (const PhantomID phmID)
+{
+ 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;
+
+ return (name);
+}
+
+Phantom::PhantomID
+Phantom::convertNameToPhantomID (const char* const phmName)
+{
+ PhantomID 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;
+
+ return (id);
+}
+
+
+bool
+Phantom::createFromPhantom (const char* const phmName)
+{
+ PhantomID phmid = convertNameToPhantomID (phmName);
+ if (phmid == PHM_INVALID) {
+ m_fail = true;
+ m_failMessage = "Invalid phantom name ";
+ m_failMessage += phmName;
+ return false;
+ }
+
+ m_name = phmName;
+ createFromPhantom (phmid);
+ return true;
+}
+
+bool
+Phantom::createFromPhantom (const PhantomID phmid)
{
switch (phmid)
{
- case O_PHM_HERMAN:
- std_herman();
+ case PHM_HERMAN:
+ addStdHerman();
break;
- case O_PHM_ROWLAND:
- std_rowland();
+ case PHM_BHERMAN:
+ addStdHermanBordered();
break;
- case O_PHM_BROWLAND:
- std_rowland_bordered ();
+ case PHM_ROWLAND:
+ addStdRowland();
break;
- case O_PHM_UNITPULSE:
+ case PHM_BROWLAND:
+ addStdRowlandBordered ();
+ break;
+ case PHM_UNITPULSE:
m_composition = P_UNIT_PULSE;
addPElem ("rectangle", 0., 0., 100., 100., 0., 0.); // outline
addPElem ("ellipse", 0., 0., 1., 1., 0., 1.); // pulse
break;
default:
- sys_error (ERR_WARNING, "Illegal phantom id %d\n", phmid);
- break;
+ m_fail = true;
+ m_failMessage = "Illegal phantom id ";
+ m_failMessage += phmid;
+ return false;
}
+
+ m_id = phmid;
+
+ return true;
}
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);
+ 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);
- gid = sgp2_init(0, 0, "Phantom Show");
+ gid = sgp2_init (0, 0, "Phantom Show");
sgp2_window (xmin, ymin, xmax, ymax);
draw();
- termgrf2();
+ sgp2_close (gid);
}
#endif
/* NAME
- * std_rowland Make head phantom of S.W. Rowland
- *
- * SYNOPSIS
- * std_rowland ()
+ * addStdRowland Make head phantom of S.W. Rowland
*
* REFERENCES
* S. W. Rowland, "Computer Implementation of Image Reconstruction
*/
void
-Phantom::std_rowland (void)
+Phantom::addStdRowland (void)
{
- 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::std_rowland_bordered (void)
+Phantom::addStdRowlandBordered (void)
{
- std_rowland ();
+ addStdRowland ();
addPElem ("ellipse", 0.000, 0.0000, 0.7500, 1.000, 0.0, 0.00);
}
/* NAME
- * std_herman Standard head phantom of G. T. Herman
- *
- * SYNOPSIS
- * std_herman ()
+ * addStdHerman Standard head phantom of G. T. Herman
*
* REFERENCES
* G. T. Herman, "Image Reconstructions from Projections: The Fundementals
*/
void
-Phantom::std_herman (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);
+ 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)
+{
+ addStdHerman();
+ addPElem ("ellipse", 0.000, 0.000, 8.650, 8.650, 0.00, 0.000);
}
* (total samples per pixel = nsample * nsample)
*/
+void
+Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace) const
+{
+ convertToImagefile (im, in_nsample, trace, 0, im.nx());
+}
+
void
-Phantom::convertToImagefile (ImageFile& im, const int colStart, const int colCount, const int in_nsample, const int trace) const
+Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace, const int colStart, const int colCount) const
{
int nx = im.nx();
int ny = im.ny();
if (nx < 2 || ny < 2)
return;
+ int nsample = in_nsample;
if (nsample < 1)
- nsample = 1;
+ nsample = 1;
- int nsample = in_nsample;
double dx = m_xmax - m_xmin;
double dy = m_ymax - m_ymin;
double xcent = m_xmin + dx / 2;
ImageFileArray v = im.getArray();
+ for (int ix = 0; ix < colCount; ix++)
+ for (int iy = 0; iy < ny; iy++)
+ v[ix][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 */
+ for (PElemConstIterator pelem = m_listPElem.begin(); pelem != m_listPElem.end(); pelem++) {
+ 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) {
+ 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();
+ } // for kx
+ } /* for iy */
+ } /* for ix */
} /* for pelem */
{
m_rot = convertDegreesToRadians (rot); // convert angle to radians
- if (strcasecmp (type, "rectangle") == 0)
- m_type = PELEM_RECTANGLE;
- else if (strcasecmp (type, "triangle") == 0)
- m_type = PELEM_TRIANGLE;
- else if (strcasecmp (type, "ellipse") == 0)
- m_type = PELEM_ELLIPSE;
- else if (strcasecmp (type, "sector") == 0)
- m_type = PELEM_SECTOR;
- else if (strcasecmp (type, "segment") == 0)
- m_type = PELEM_SEGMENT;
- else {
- sys_error (ERR_WARNING, "Unknown PhantomElement type %s [PhantomElement::PhantomElement]", type);
- m_type = PELEM_INVALID;
- }
+ m_type = convertNameToType (type);
makeTransformMatrices (); // calc transform matrices between phantom and normalized phantomelement
makeVectorOutline (); // calculate vector outline of pelem
delete m_yOutline;
}
+PhmElemType
+PhantomElement::convertNameToType (const char* const typeName)
+{
+ PhmElemType type = PELEM_INVALID;
+
+ if (strcasecmp (typeName, "rectangle") == 0)
+ type = PELEM_RECTANGLE;
+ else if (strcasecmp (typeName, "triangle") == 0)
+ type = PELEM_TRIANGLE;
+ else if (strcasecmp (typeName, "ellipse") == 0)
+ type = PELEM_ELLIPSE;
+ else if (strcasecmp (typeName, "sector") == 0)
+ type = PELEM_SECTOR;
+ else if (strcasecmp (typeName, "segment") == 0)
+ type = PELEM_SEGMENT;
+ else
+ sys_error (ERR_WARNING, "Unknown PhantomElement type %s [PhantomElement::PhantomElement]", type);
+
+ return (type);
+}
+
void
PhantomElement::makeTransformMatrices (void)
{
* Called by phm_add_pelem()
*/
-static const double SCALE_PELEM_EXTENT=0.005; // increase pelem limits by 0.5%
-
void
PhantomElement::makeVectorOutline (void)
{
}
-
/* NAME
* calc_arc Calculate outline of a arc of a circle
*
*/
int
-PhantomElement::numCirclePoints (double theta) const
+PhantomElement::numCirclePoints (double theta)
{
- if (theta < 0.0 || theta > TWOPI)
- sys_error(ERR_WARNING, "illegal values sent to circle_pts");
+ theta = clamp (theta, 0., TWOPI);
return static_cast<int> (POINTS_PER_CIRCLE * theta / TWOPI + 1.5);
}
// 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);