/*****************************************************************************
** FILE IDENTIFICATION
-**
+**
** Name: phm.cpp
** Purpose: Routines for phantom objects
-** Progammer: Kevin Rosenberg
+** Progammer: Kevin Rosenberg
** Date Started: Aug 1984
**
** This is part of the CTSim program
-** Copyright (C) 1983-2000 Kevin Rosenberg
-**
-** $Id: phantom.cpp,v 1.16 2000/08/25 15:59:13 kevin Exp $
+** Copyright (c) 1983-2009 Kevin Rosenberg
**
** 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;
+const double PhantomElement::SCALE_PELEM_EXTENT=0.000; // increase pelem limits by 0.5%
+//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 int Phantom::PHM_SHEPP_LOGAN = 1;
+const int Phantom::PHM_UNITPULSE = 2;
+
+const char* Phantom::s_aszPhantomName[] =
+{
+ "herman",
+ "shepp-logan",
+ "unit-pulse",
};
-const char* Phantom::s_aszPhantomTitle[] =
+const char* Phantom::s_aszPhantomTitle[] =
{
- {"Herman Head"},
- {"Herman Head (Bordered)"},
- {"Shepp-Logan"},
- {"Shepp-Logan (Bordered)"},
- {"Unit Pulse"},
+ "Herman Head",
+ "Shepp-Logan",
+ "Unit Pulse",
};
const int Phantom::s_iPhantomCount = sizeof(s_aszPhantomName) / sizeof(const char*);
createFromPhantom (phmName);
}
-void
+void
Phantom::init ()
{
m_nPElem = 0;
m_xmax = -1E30;
m_ymin = 1E30;
m_ymax = -1E30;
- m_diameter = 0;
m_composition = P_PELEMS;
m_fail = false;
m_id = PHM_INVALID;
+ m_im = NULL;
}
Phantom::~Phantom ()
for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
delete *i;
}
+ if (m_im)
+ delete m_im;
}
-
const char*
Phantom::convertPhantomIDToName (int phmID)
{
static const char *name = "";
if (phmID >= 0 && phmID < s_iPhantomCount)
- return (s_aszPhantomName[phmID]);
+ return (s_aszPhantomName[phmID]);
return (name);
}
static const char *title = "";
if (phmID >= 0 && phmID < s_iPhantomCount)
- return (s_aszPhantomName[phmID]);
+ return (s_aszPhantomName[phmID]);
return (title);
}
-
+
int
-Phantom::convertNameToPhantomID (const char* const phmName)
+Phantom::convertNameToPhantomID (const char* const phmName)
{
int id = PHM_INVALID;
- for (int i = 0; i < s_iPhantomCount; i++)
- if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) {
- id = i;
- break;
- }
-
+ for (int i = 0; i < s_iPhantomCount; i++) {
+ if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) {
+ id = i;
+ break;
+ }
+ }
return (id);
}
-
+
bool
Phantom::createFromPhantom (const char* const phmName)
bool
Phantom::createFromPhantom (const int phmid)
{
- switch (phmid)
- {
- case PHM_HERMAN:
- addStdHerman();
- break;
- case PHM_B_HERMAN:
- addStdHermanBordered();
- break;
- case PHM_SHEPP_LOGAN:
- addStdSheppLogan();
- break;
- case PHM_B_SHEPP_LOGAN:
- addStdSheppLoganBordered();
- 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:
- m_fail = true;
- m_failMessage = "Illegal phantom id ";
- m_failMessage += phmid;
- return false;
- }
+ switch (phmid)
+ {
+ case PHM_HERMAN:
+ addStdHerman();
+ break;
+ case PHM_SHEPP_LOGAN:
+ addStdSheppLogan();
+ 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:
+ m_fail = true;
+ m_failMessage = "Illegal phantom id ";
+ m_failMessage += phmid;
+ return false;
+ }
m_id = phmid;
/* METHOD IDENTIFICATION
- * createFromFile Add PhantomElements from file
- *
- * SYNOPSIS
- * createFromFile (filename)
- *
- * RETURNS
- * true if pelem were added
- * false if an pelem not added
- */
+* createFromPhmFile Add PhantomElements from file
+*
+* SYNOPSIS
+* createFromPhmFile (filename)
+*
+* RETURNS
+* true if pelem were added
+* false if an pelem not added
+*/
bool
-Phantom::createFromFile (const char* const fname)
+Phantom::createFromPhmFile (const char* const fname)
{
- bool stoploop = false;
- bool retval = false;
+ bool bGoodFile = true;
FILE *fp;
if ((fp = fopen (fname, "r")) == NULL)
return (false);
- do {
- if (! feof(fp)) {
- double cx, cy, u, v, rot, dens;
- char pelemtype[80];
- char str[1024];
- fgets (str, sizeof(str), fp);
- int n = sscanf (str, "%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;
- }
- } else {
- stoploop = true;
- retval = true;
+ m_name = fname;
+
+ while (1) {
+ double cx, cy, u, v, rot, dens;
+ char pelemtype[80];
+
+ int status = fscanf (fp, "%79s %lf %lf %lf %lf %lf %lf", pelemtype, &cx, &cy, &u, &v, &rot, &dens);
+
+ if (status == static_cast<int>(EOF))
+ break;
+ else if (status != 7) {
+ sys_error (ERR_WARNING, "Insufficient fields reading phantom file %s [Phantom::createFromPhmFile]", fname);
+ bGoodFile = false;
}
- } while (stoploop == false);
-
+ addPElem (pelemtype, cx, cy, u, v, rot, dens);
+ }
+
fclose (fp);
- return (retval);
+ return (bGoodFile);
+}
+
+bool
+Phantom::createFromImageFile (const char* const fname)
+{
+ bool bGoodFile = true;
+
+ m_im = new ImageFile ();
+ if (! m_im || ! m_im->fileRead (fname)) {
+ sys_error (ERR_SEVERE, "Unable to read image file %s", fname);
+ bGoodFile = false;
+ delete m_im;
+ m_im = NULL;
+ m_fail = true;
+ } else {
+ m_name = fname;
+ m_id = -1;
+ m_fail = false;
+
+ if (! m_im->getAxisExtent(m_xmin, m_xmax, m_ymin, m_ymax)) {
+ m_xmax = m_im->nx() / 2.; m_xmin = -m_xmax;
+ m_ymax = m_im->ny() / 2.; m_ymin = -m_ymax;
+ }
+ }
+
+ return (bGoodFile);
}
+bool
+Phantom::fileWrite (const char* const fname)
+{
+ fstream file (fname, std::ios::out);
+
+ if (! file.fail())
+ printDefinitions (file);
+ return ! file.fail();
+}
/* NAME
- * addPElem Add pelem
- *
- * SYNOPSIS
- * addPElem (type, cx, cy, u, v, rot, atten)
- * char *type type of pelem (box, ellipse, etc)
- * double cx, cy pelem center
- * double u,v pelem size
- * double rot rotation angle of pelem (in degrees)
- * double atten x-ray attenuation cooefficient
- */
-
-void
+* addPElem Add pelem
+*
+* SYNOPSIS
+* addPElem (type, cx, cy, u, v, rot, atten)
+* char *type type of pelem (box, ellipse, etc)
+* double cx, cy pelem center
+* double u,v pelem size
+* double rot rotation angle of pelem (in degrees)
+* double atten x-ray attenuation cooefficient
+*/
+
+void
Phantom::addPElem (const char *type, const double cx, const double cy, const double u, const double v, const double rot, const double atten)
{
- PhantomElement *pelem = new PhantomElement (type, cx, cy, u, v, rot, atten);
+ PhmElemType pe_type = PhantomElement::convertNameToType (type);
+ if (pe_type == PELEM_INVALID) {
+ sys_error (ERR_WARNING, "Unknown PhantomElement type %s [PhantomElement::PhantomElement]", type);
+ return;
+ }
+ PhantomElement *pelem = new PhantomElement (type, cx, cy, u, v, rot, atten);
m_listPElem.push_front (pelem);
// update phantom limits
if (m_ymin > pelem->ymin()) m_ymin = pelem->ymin();
if (m_ymax < pelem->ymax()) m_ymax = pelem->ymax();
- if (m_diameter < pelem->diameter())
- m_diameter = pelem->diameter();
-
- // m_diameter = lineLength(m_xmin, m_ymin, m_xmax, m_ymax);
-
m_nPElem++;
}
/*----------------------------------------------------------------------*/
-/* Input-Output Routines */
+/* Input-Output Routines */
/*----------------------------------------------------------------------*/
/* NAME
- * print Print vertices of Phantom pelems
- *
- * SYNOPSIS
- * print (phm)
- */
-
-void
-Phantom::print () const
-{
- printf("PRINTING Phantom\n\n");
- printf("number of pelems in Phantom = %d\n", m_nPElem);
- printf("limits: xmin=%8.2g ymin=%8.2g xmax=%8.2g ymax=%8.2g\n",
- m_xmin, m_ymin, m_xmax, m_ymax);
-
- for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
- printf("PELEM:\n");
- printf("# pts=%3d atten = %7.4f rot = %7.2f (deg)\n",
- (*i)->nOutlinePoints(), (*i)->atten(), convertRadiansToDegrees ((*i)->rot()));
-
- printf("xmin=%7.3g ymin=%7.3g xmax=%7.3g ymax=%7.3g\n",
- (*i)->xmin(), (*i)->ymin(), (*i)->xmax(), (*i)->ymax());
-
- // for (int i = 0; i < m_nPoints; i++)
- // printf("\t%8.3g %8.3g\n", i->xOutline()[i], i->yOutline()[i]);
+* print Print vertices of Phantom pelems
+*
+* SYNOPSIS
+* print (phm)
+*/
+
+void
+Phantom::print (std::ostream& os) const
+{
+ os << "Number of PElements: " << m_nPElem << "\n";
+ os << "Limits: xmin=" << m_xmin << ", ymin=" << m_ymin << ", xmax=" << m_xmax << ", ymax=" << m_ymax << "\n";
+
+ for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
+ const PhantomElement& rPE = **i;
+ os << "PhantomElement: nPoints=" << rPE.nOutlinePoints();
+ os << ", atten=" << rPE.atten() << " rot=" << convertRadiansToDegrees (rPE.rot()) << "\n";
+ os << "xmin=" << rPE.xmin() << ", ymin=" << rPE.ymin() << ", xmax=" << rPE.xmax() << ", ymax=" << rPE.ymax() << "\n";
+
+ if (false)
+ for (int i = 0; i < rPE.nOutlinePoints(); i++)
+ os << rPE.xOutline()[i] << "," << rPE.yOutline()[i] << "\n";
+ }
+}
+void
+Phantom::print (std::ostringstream& os) const
+{
+ os << "Number of PElements: " << m_nPElem << "\n";
+ os << "Limits: xmin=" << m_xmin << ", ymin=" << m_ymin << ", xmax=" << m_xmax << ", ymax=" << m_ymax << "\n";
+
+ for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
+ const PhantomElement& rPE = **i;
+ os << "PhantomElement: nPoints=" << rPE.nOutlinePoints();
+ os << ", atten=" << rPE.atten() << " rot=" << convertRadiansToDegrees (rPE.rot()) << "\n";
+ os << "xmin=" << rPE.xmin() << ", ymin=" << rPE.ymin() << ", xmax=" << rPE.xmax() << ", ymax=" << rPE.ymax() << "\n";
+
+ if (false)
+ for (int i = 0; i < rPE.nOutlinePoints(); i++)
+ os << rPE.xOutline()[i] << "," << rPE.yOutline()[i] << "\n";
+ }
+}
+
+void
+Phantom::printDefinitions (std::ostream& os) const
+{
+ for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
+ const PhantomElement& rPE = **i;
+ rPE.printDefinition (os);
+ }
+}
+
+void
+Phantom::printDefinitions (std::ostringstream& os) const
+{
+ for (PElemConstIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++) {
+ const PhantomElement& rPE = **i;
+ rPE.printDefinition (os);
}
}
/* NAME
- * show Show vector outline of Phantom to user
- *
- * SYNOPSIS
- * show (pic)
- */
+* show Show vector outline of Phantom to user
+*
+* SYNOPSIS
+* show (pic)
+*/
#ifdef HAVE_SGP
-void
+void
Phantom::show () const
{
SGPDriver driverSGP ("Phantom Show");
show (sgp);
- cout << "Press return to continue";
+ std::cout << "Press return to continue";
cio_kb_getc();
}
-void
+void
Phantom::show (SGP& sgp) const
{
double wsize = m_xmax - m_xmin;
- if ((m_ymax - m_ymin) > wsize)
- wsize = m_ymax - m_ymin;
+ if ((m_ymax - m_ymin) > wsize)
+ wsize = m_ymax - m_ymin;
wsize *= 1.01;
double halfWindow = wsize / 2;
/* NAME
- * draw Draw vector outline of Phantom
- *
- * SYNOPSIS
- * draw ()
- */
+* draw Draw vector outline of Phantom
+*
+* SYNOPSIS
+* draw ()
+*/
#ifdef HAVE_SGP
-void
+void
Phantom::draw (SGP& sgp) const
{
for (PElemIterator i = m_listPElem.begin(); i != m_listPElem.end(); i++)
/* NAME
- * addStdSheppLogan Make head phantom of Shepp-Logan
- *
- * REFERENCES
- * S. W. Rowland, "Computer Implementation of Image Reconstruction
- * Formulas", in "Image Reconstruction from Projections: Implementation
- * and Applications", edited by G. T. Herman, 1978.
- */
-
-void
+* addStdSheppLogan Make head phantom of Shepp-Logan
+*
+* REFERENCES
+* S. W. Rowland, "Computer Implementation of Image Reconstruction
+* Formulas", in "Image Reconstruction from Projections: Implementation
+* and Applications", edited by G. T. Herman, 1978.
+*/
+
+void
Phantom::addStdSheppLogan ()
{
addPElem ("ellipse", 0.0000, 0.0000, 0.6900, 0.9200, 0.0, 1.00);
addPElem ("ellipse", 0.5538, -0.3858, 0.0330, 0.2060, -18.0, 0.03);
}
-void
-Phantom::addStdSheppLoganBordered ()
-{
- addStdSheppLogan ();
- addPElem ("rectangle", 0.000, 0.0000, 0.7500, 1.000, 0.0, 0.00);
-}
/* NAME
- * addStdHerman Standard head phantom of G. T. Herman
- *
- * REFERENCES
- * G. T. Herman, "Image Reconstructions from Projections: The Fundementals
- * of Computed Tomography", 1979.
- */
-
-void
+* addStdHerman Standard head phantom of G. T. Herman
+*
+* REFERENCES
+* G. T. Herman, "Image Reconstructions from Projections: The Fundementals
+* of Computed Tomography", 1979.
+*/
+
+void
Phantom::addStdHerman ()
{
addPElem ("ellipse", 0.000, 1.50, 0.375, 0.3000, 90.00, -0.003);
addPElem ("ellipse", 0.000, 0.00, 7.875, 5.7187, 90.00, -0.206);
}
-void
-Phantom::addStdHermanBordered ()
-{
- addStdHerman();
- addPElem ("rectangle", 0.000, 0.00, 9.000, 6.800, 0.00, 0.000);
-}
/* NAME
- * convertToImagefile Make image array from Phantom
- *
- * SYNOPSIS
- * pic_to_imagefile (pic, im, nsample)
- * Phantom& pic Phantom definitions
- * ImageFile *im Computed pixel array
- * int nsample Number of samples along each axis for each pixel
- * (total samples per pixel = nsample * nsample)
- */
+* convertToImagefile Make image array from Phantom
+*
+* SYNOPSIS
+* pic_to_imagefile (pic, im, nsample)
+* Phantom& pic Phantom definitions
+* ImageFile *im Computed pixel array
+* int nsample Number of samples along each axis for each pixel
+* (total samples per pixel = nsample * nsample)
+*/
+
+void
+Phantom::convertToImagefile (ImageFile& im, double dViewRatio, const int in_nsample, const int trace) const
+{
+ convertToImagefile (im, dViewRatio, in_nsample, trace, 0, im.nx(), true);
+}
void
-Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace) const
+Phantom::convertToImagefile (ImageFile& im, const double dViewRatio, const int in_nsample, const int trace,
+ const int colStart, const int colCount, bool bStoreAtColumnPos) const
{
- convertToImagefile (im, in_nsample, trace, 0, im.nx());
+ int iStorageOffset = (bStoreAtColumnPos ? colStart : 0);
+ convertToImagefile (im, im.nx(), dViewRatio, in_nsample, trace, colStart, colCount, iStorageOffset);
}
-void
-Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trace, const int colStart, const int colCount) const
+void
+Phantom::convertToImagefile (ImageFile& im, const int iTotalRasterCols, const double dViewRatio,
+ const int in_nsample, const int trace, const int colStart, const int colCount, int iStorageOffset) const
{
- int nx = im.nx();
- int ny = im.ny();
+ const int nx = im.nx();
+ const int ny = im.ny();
if (nx < 2 || ny < 2)
- return;
+ return;
int nsample = in_nsample;
- if (nsample < 1)
+ if (nsample < 1)
nsample = 1;
double dx = m_xmax - m_xmin;
double dy = m_ymax - m_ymin;
double xcent = m_xmin + dx / 2;
double ycent = m_ymin + dy / 2;
- double phmlen = (dx > dy ? dx : dy);
-
- double phmradius = phmlen / 2;
+ double dHalflen = dViewRatio * (getDiameterBoundaryCircle() / SQRT2 / 2);
- double xmin = xcent - phmradius;
- double xmax = xcent + phmradius;
- double ymin = ycent - phmradius;
- double ymax = ycent + phmradius;
+ double xmin = xcent - dHalflen;
+ double xmax = xcent + dHalflen;
+ double ymin = ycent - dHalflen;
+ double ymax = ycent + dHalflen;
// Each pixel holds the average of the intensity of the cell with (ix,iy) at the center of the pixel
// Set major increments so that the last cell v[nx-1][ny-1] will start at xmax - xinc, ymax - yinc).
// Set minor increments so that sample points are centered in cell
- double xinc = (xmax - xmin) / nx;
+ double xinc = (xmax - xmin) / (iTotalRasterCols);
double yinc = (ymax - ymin) / ny;
- double kxinc = xinc / nsample; /* interval between samples */
+ double kxinc = xinc / nsample; /* interval between samples */
double kyinc = yinc / nsample;
- double kxofs = kxinc / 2; /* offset of 1st point */
+ double kxofs = kxinc / 2; /* offset of 1st point */
double kyofs = kyinc / 2;
im.setAxisExtent (xmin, xmax, ymin, ymax);
ImageFileArray v = im.getArray();
- for (int ix = 0; ix < colCount; ix++)
- for (int iy = 0; iy < ny; iy++)
- v[ix][iy] = 0;
+ for (int ix = 0; ix < colCount; ix++) {
+ int iColStore = ix + iStorageOffset;
+ ImageFileColumn vCol = v[iColStore];
+ for (int iy = 0; iy < ny; iy++)
+ *vCol++ = 0;
+ }
+
+#if HAVE_OPENMP
+ double x_start = xmin + (colStart * xinc);
+ for (PElemConstIterator pelem = m_listPElem.begin(); pelem != m_listPElem.end(); pelem++) {
+ const PhantomElement& rPElem = **pelem;
+ #pragma omp parallel for
+ for (int ix = 0; ix < colCount; ix++) {
+ double x = x_start + ix * xinc;
+ int iColStore = ix + iStorageOffset;
+ ImageFileColumn vCol = v[iColStore];
+
+ double y = ymin;
+ for (int iy = 0; iy < ny; iy++, y += yinc) {
+ double dAtten = 0;
+ double xi = x + kxofs;
+ for (int kx = 0; kx < nsample; kx++, xi += kxinc) {
+ double yi = y + kyofs;
+ for (int ky = 0; ky < nsample; ky++, yi += kyinc) {
+ if (rPElem.isPointInside (xi, yi, PHM_COORD))
+ dAtten += rPElem.atten();
+ } // ky
+ } // kx
+ *vCol++ += dAtten;
+ } /* iy */
+ } /* ix */
+ } /* pelem */
+
+#else
double x_start = xmin + (colStart * xinc);
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 */
+ 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 + iStorageOffset;
+ ImageFileColumn vCol = v[iColStore];
+ for (iy = 0, y = ymin; iy < ny; iy++, y += yinc) {
+ double dAtten = 0;
+ 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))
+ dAtten += rPElem.atten();
+ } // for kx
+ *vCol++ += dAtten;
+ } /* for iy */
+ } /* for ix */
} /* for pelem */
-
+#endif
if (nsample > 1) {
- double factor = 1.0 / (nsample * nsample);
-
- for (int ix = 0; ix < colCount; ix++)
+ double factor = 1.0 / static_cast<double>(nsample * nsample);
+#if HAVE_OPENMP
+ #pragma omp parallel for
+#endif
+ for (int ix = 0; ix < colCount; ix++) {
+ int iColStore = ix + iStorageOffset;
+ ImageFileColumn vCol = v[iColStore];
for (int iy = 0; iy < ny; iy++)
- v[ix][iy] *= factor;
+ *vCol++ *= factor;
+ }
}
}
PhantomElement::PhantomElement (const char *type, const double cx, const double cy, const double u, const double v, const double rot, const double atten)
- : m_cx(cx), m_cy(cy), m_u(u), m_v(v), m_atten(atten), m_nPoints(0), m_xOutline(0), m_yOutline(0)
+: m_cx(cx), m_cy(cy), m_u(u), m_v(v), m_atten(atten), m_nPoints(0), m_xOutline(0), m_yOutline(0)
{
m_rot = convertDegreesToRadians (rot); // convert angle to radians
m_type = convertNameToType (type);
makeTransformMatrices (); // calc transform matrices between phantom and normalized phantomelement
- makeVectorOutline (); // calculate vector outline of pelem
-
- // Find maximum diameter of Object
- double r2Max = 0;
- for (int i = 0; i < m_nPoints; i++) {
- double r2 = (m_xOutline[i] * m_xOutline[i]) + (m_yOutline[i] * m_yOutline[i]);
- if (r2 > r2Max)
- r2Max = r2;
- }
- m_diameter = 2 * sqrt( r2Max );
+ makeVectorOutline (); // calculate vector outline of pelem
m_rectLimits[0] = m_xmin; m_rectLimits[1] = m_ymin;
m_rectLimits[2] = m_xmax; m_rectLimits[3] = m_ymax;
}
+
PhantomElement::~PhantomElement ()
{
- delete m_xOutline;
- delete m_yOutline;
+ delete m_xOutline;
+ delete m_yOutline;
+}
+
+void
+PhantomElement::printDefinition (std::ostream& os) const
+{
+ os << convertTypeToName (m_type) << " " << m_cx << " " << m_cy << " " << m_u << " "
+ << m_v << " " << convertRadiansToDegrees (m_rot) << " " << m_atten << "\n";
+}
+
+void
+PhantomElement::printDefinition (std::ostringstream& os) const
+{
+ os << convertTypeToName (m_type) << " " << m_cx << " " << m_cy << " " << m_u << " "
+ << m_v << " " << convertRadiansToDegrees (m_rot) << " " << m_atten << "\n";
}
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);
+ 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;
+
+ return (type);
+}
- return (type);
+const char* const
+PhantomElement::convertTypeToName (PhmElemType iType)
+{
+ static const char* pszType = "Unknown";
+
+ if (iType == PELEM_RECTANGLE)
+ pszType = "rectangle";
+ else if (iType == PELEM_TRIANGLE)
+ pszType = "triangle";
+ else if (iType == PELEM_ELLIPSE)
+ pszType = "ellipse";
+ else if (iType == PELEM_SECTOR)
+ pszType = "sector";
+ else if (iType == PELEM_SEGMENT)
+ pszType = "segment";
+
+ return pszType;
}
-void
+
+void
PhantomElement::makeTransformMatrices ()
{
GRFMTX_2D temp;
- // To map normalized Pelem coords to world Phantom
- // scale by (u, v)
- // rotate by rot
- // translate by (cx, cy)
+ // To map normalized Pelem coords to world Phantom
+ // scale by (u, v)
+ // rotate by rot
+ // translate by (cx, cy)
scale_mtx2 (m_xformObjToPhm, m_u, m_v);
rot_mtx2 (temp, m_rot);
/* NAME
- * pelem_make_points INTERNAL routine to calculate point array for an pelem
- *
- * SYNOPSIS
- * makepelempts (pelem)
- * PELEM *pelem pelem whose points we are calculating
- *
- * NOTES
- * Called by phm_add_pelem()
- */
+* pelem_make_points INTERNAL routine to calculate point array for an pelem
+*
+* SYNOPSIS
+* makepelempts (pelem)
+* PELEM *pelem pelem whose points we are calculating
+*
+* NOTES
+* Called by phm_add_pelem()
+*/
void
PhantomElement::makeVectorOutline ()
m_nPoints = 5;
m_xOutline = new double [m_nPoints];
m_yOutline = new double [m_nPoints];
- m_xOutline[0] =-m_u; m_yOutline[0] =-m_v;
- m_xOutline[1] = m_u; m_yOutline[1] =-m_v;
- m_xOutline[2] = m_u; m_yOutline[2] = m_v;
- m_xOutline[3] =-m_u; m_yOutline[3] = m_v;
- m_xOutline[4] =-m_u; m_yOutline[4] =-m_v;
+ m_xOutline[0] =-m_u; m_yOutline[0] =-m_v;
+ m_xOutline[1] = m_u; m_yOutline[1] =-m_v;
+ m_xOutline[2] = m_u; m_yOutline[2] = m_v;
+ m_xOutline[3] =-m_u; m_yOutline[3] = m_v;
+ m_xOutline[4] =-m_u; m_yOutline[4] =-m_v;
break;
case PELEM_TRIANGLE:
m_nPoints = 4;
m_xOutline = new double [m_nPoints];
m_yOutline = new double [m_nPoints];
- m_xOutline[0] =-m_u; m_yOutline[0] = 0.0;
- m_xOutline[1] = m_u; m_yOutline[1] = 0.0;
- m_xOutline[2] = 0.0; m_yOutline[2] = m_v;
- m_xOutline[3] =-m_u; m_yOutline[3] = 0.0;
+ m_xOutline[0] =-m_u; m_yOutline[0] = 0.0;
+ m_xOutline[1] = m_u; m_yOutline[1] = 0.0;
+ m_xOutline[2] = 0.0; m_yOutline[2] = m_v;
+ m_xOutline[3] =-m_u; m_yOutline[3] = 0.0;
break;
case PELEM_ELLIPSE:
cpts = numCirclePoints (TWOPI);
break;
case PELEM_SECTOR:
radius = sqrt(m_u * m_u + m_v * m_v);
- theta = atan(m_u / m_v); // angle with y-axis
+ theta = atan(m_u / m_v); // angle with y-axis
start = 3.0 * HALFPI - theta;
stop = 3.0 * HALFPI + theta;
cpts = numCirclePoints (stop - start);
m_nPoints = 3 + cpts;
m_xOutline = new double [m_nPoints];
m_yOutline = new double [m_nPoints];
-
- m_xOutline[0] = 0.0; m_yOutline[0] = m_v;
- m_xOutline[1] =-m_u; m_yOutline[1] = 0.0;
+
+ m_xOutline[0] = 0.0; m_yOutline[0] = m_v;
+ m_xOutline[1] =-m_u; m_yOutline[1] = 0.0;
calcArcPoints (&m_xOutline[2], &m_yOutline[2], cpts, 0.0, m_v, radius, start, stop);
m_xOutline[cpts + 2] = 0.0;
m_yOutline[cpts + 2] = m_v;
break;
case PELEM_SEGMENT:
radius = sqrt(m_u * m_u + m_v * m_v);
- theta = atan (m_u / m_v); // angle with y-axis
+ theta = atan (m_u / m_v); // angle with y-axis
start = 3.0 * HALFPI - theta;
stop = 3.0 * HALFPI + theta;
-
+
cpts = numCirclePoints (stop - start);
m_nPoints = cpts + 1;
m_xOutline = new double [m_nPoints];
m_yOutline = new double [m_nPoints];
-
+
calcArcPoints (m_xOutline, m_yOutline, cpts, 0.0, m_v, radius, start, stop);
m_xOutline[cpts] = -m_u;
m_yOutline[cpts] = 0.0;
break;
default:
- sys_error(ERR_WARNING, "illegal pelem type %d [makeVectorOutline]", m_type);
+ sys_error(ERR_WARNING, "Illegal phantom element type %d [makeVectorOutline]", m_type);
return;
}
-
+
rotate2d (m_xOutline, m_yOutline, m_nPoints, m_rot);
xlat2d (m_xOutline, m_yOutline, m_nPoints, m_cx, m_cy);
-
+
minmax_array (m_xOutline, m_nPoints, m_xmin, m_xmax);
minmax_array (m_yOutline, m_nPoints, m_ymin, m_ymax);
-
+
// increase pelem extent by SCALE_PELEM_EXTENT to eliminate chance of
- // missing actual pelem maximum due to polygonal sampling
+ // missing actual pelem maximum due to polygonal sampling
xfact = (m_xmax - m_xmin) * SCALE_PELEM_EXTENT;
yfact = (m_ymax - m_ymin) * SCALE_PELEM_EXTENT;
/* NAME
- * calc_arc Calculate outline of a arc of a circle
- *
- * SYNOPSIS
- * calc_arc (x, y, xcent, ycent, pts, r, start, stop)
- * double x[], y[]; Array of points
- * int pts Number of points in array
- * double xcent, ycent Center of cirlce
- * double r Radius of circle
- * double start, stop Beginning & ending angles
- */
-
-void
+* calc_arc Calculate outline of a arc of a circle
+*
+* SYNOPSIS
+* calc_arc (x, y, xcent, ycent, pts, r, start, stop)
+* double x[], y[]; Array of points
+* int pts Number of points in array
+* double xcent, ycent Center of cirlce
+* double r Radius of circle
+* double start, stop Beginning & ending angles
+*/
+
+void
PhantomElement::calcArcPoints (double x[], double y[], const int pts, const double xcent, const double ycent, const double r, const double start, const double stop)
{
- if (r <= 0.0)
- sys_error (ERR_WARNING, "negative or zero radius in calc_arc()");
-
- double theta = (stop - start) / (pts - 1); // angle incr. between points
- double c = cos(theta);
- double s = sin(theta);
-
- x[0] = r * cos (start) + xcent;
- y[0] = r * sin (start) + ycent;
-
- double xp = x[0] - xcent;
- double yp = y[0] - ycent;
- for (int i = 1; i < pts; i++) {
- double xc = c * xp - s * yp;
- double yc = s * xp + c * yp;
- x[i] = xc + xcent;
- y[i] = yc + ycent;
- xp = xc; yp = yc;
- }
+ if (r <= 0.0)
+ sys_error (ERR_WARNING, "negative or zero radius in calc_arc()");
+
+ double theta = (stop - start) / (pts - 1); // angle incr. between points
+ double c = cos(theta);
+ double s = sin(theta);
+
+ x[0] = r * cos (start) + xcent;
+ y[0] = r * sin (start) + ycent;
+
+ double xp = x[0] - xcent;
+ double yp = y[0] - ycent;
+ for (int i = 1; i < pts; i++) {
+ double xc = c * xp - s * yp;
+ double yc = s * xp + c * yp;
+ x[i] = xc + xcent;
+ y[i] = yc + ycent;
+ xp = xc; yp = yc;
+ }
}
//
-void
+void
PhantomElement::calcEllipsePoints (double x[], double y[], const int pts, const double u, const double v)
{
- calcArcPoints (x, y, m_nPoints, 0.0, 0.0, 1.0, 0.0, TWOPI); // make a unit circle
- scale2d (x, y, m_nPoints, m_u, m_v); // scale to ellipse
+ calcArcPoints (x, y, m_nPoints, 0.0, 0.0, 1.0, 0.0, TWOPI); // make a unit circle
+ scale2d (x, y, m_nPoints, m_u, m_v); // scale to ellipse
}
/* NAME
- * circle_pts Calculate number of points to use for circle segment
- *
- * SYNOPSIS
- * n = circle_pts (theta)
- * int n Number of points to use for arc
- * double theta Length of arc in radians
- */
-
-int
+* circle_pts Calculate number of points to use for circle segment
+*
+* SYNOPSIS
+* n = circle_pts (theta)
+* int n Number of points to use for arc
+* double theta Length of arc in radians
+*/
+
+int
PhantomElement::numCirclePoints (double theta)
{
- theta = clamp (theta, 0., TWOPI);
+ theta = clamp (theta, 0., TWOPI);
- return static_cast<int> (POINTS_PER_CIRCLE * theta / TWOPI + 1.5);
+ return static_cast<int> (POINTS_PER_CIRCLE * theta / TWOPI + 1.5);
}
double cx1 = x1, cy1 = y1, cx2 = x2, cy2 = y2;
if (! clip_rect (cx1, cy1, cx2, cy2, m_rectLimits))
return false;
-
- // convert phantom coordinates to pelem coordinates
+
+ // convert phantom coordinates to pelem coordinates
xform_mtx2 (m_xformPhmToObj, x1, y1);
xform_mtx2 (m_xformPhmToObj, x2, y2);
-
+
if (! clipLineNormalizedCoords (x1, y1, x2, y2))
return false;
- // convert standard pelem coordinates back to phantom coordinates
+ // convert standard pelem coordinates back to phantom coordinates
xform_mtx2 (m_xformObjToPhm, x1, y1);
xform_mtx2 (m_xformObjToPhm, x2, y2);
/* NAME
- * pelem_clip_line Clip pelem against an arbitrary line
- *
- * SYNOPSIS
- * pelem_clip_line (pelem, x1, y1, x2, y2)
- * PhantomElement& pelem; Pelem to be clipped
- * double *x1, *y1, *x2, *y2 Endpoints of line to be clipped
- *
- * RETURNS
- * true if line passes through pelem
- * (x1, y1, x2, y2 hold coordinates of new line)
- * false if line do not pass through pelem
- * (x1, y1, x2, y2 are undefined)
- */
+* pelem_clip_line Clip pelem against an arbitrary line
+*
+* SYNOPSIS
+* pelem_clip_line (pelem, x1, y1, x2, y2)
+* PhantomElement& pelem; Pelem to be clipped
+* double *x1, *y1, *x2, *y2 Endpoints of line to be clipped
+*
+* RETURNS
+* true if line passes through pelem
+* (x1, y1, x2, y2 hold coordinates of new line)
+* false if line do not pass through pelem
+* (x1, y1, x2, y2 are undefined)
+*/
bool
PhantomElement::clipLineNormalizedCoords (double& x1, double& y1, double& x2, double& y2) const
}
-// METHOD IDENTIFICATION
-// PhantomElement::isPointInside Check if point is inside pelem
+// METHOD IDENTIFICATION
+// PhantomElement::isPointInside Check if point is inside pelem
//
// SYNOPSIS
// is_point_inside (pelem, x, y, coord_type)
-// double x, y Point to see if lies in pelem
-// int coord_type Coordinate type (PELEM_COORD or PHM_COORD)
+// double x, y Point to see if lies in pelem
+// int coord_type Coordinate type (PELEM_COORD or PHM_COORD)
//
// RETURNS
// true if point lies within pelem
case PELEM_ELLIPSE:
if (x > 1. || x < -1. || y > 1. || y < -1.)
return (false);
- if (x * x + y * y > 1.) // check if inside unit circle
+ if (x * x + y * y > 1.) // check if inside unit circle
return (false);
else
return (true);
break;
// for clipping segments & sectors, must NOT scale by (1/u, 1/v)
- // because this destroys information about size of arc component
+ // because this destroys information about size of arc component
case PELEM_SEGMENT:
if (x > 1. || x < -1. || y > 0.)
- return (false); // clip against y > 0
- x *= m_u; // put back u & v scale
+ return (false); // clip against y > 0
+ x *= m_u; // put back u & v scale
y *= m_v;
if (x * x + (y-m_v) * (y-m_v) > m_u * m_u + m_v * m_v)
- return (false); // clip against circle, r = sqrt(@)
+ return (false); // clip against circle, r = sqrt(@)
else
return (true);
break;
case PELEM_SECTOR:
- if (x > 1. || x < -1. || y > 1.) // extent
+ if (x > 1. || x < -1. || y > 1.) // extent
return (false);
- if (y > 1. - x || y > 1. + x) // triangle
- return (false); // clip against triangle
- x *= m_u; // circle: put back u & v scale
+ if (y > 1. - x || y > 1. + x) // triangle
+ return (false); // clip against triangle
+ x *= m_u; // circle: put back u & v scale
y *= m_v;
if (x * x + (y-m_v) * (y-m_v) > m_u * m_u + m_v * m_v)
- return (false); // clip against circle
+ return (false); // clip against circle
else
return (true);
- break;
+ break;
default:
sys_error (ERR_WARNING, "Illegal pelem type in pelem_is_point_inside()");
break;
projects / ctsim.git / blobdiff