X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fphantom.cpp;h=8d02d1115865e206c90e49e28f58f4ab8d518b33;hp=aff37a0ac9242fae8dcd4b8e5bc72d7b970f443d;hb=c0f892798de8f89715266150f7d8e413f2cf29fe;hpb=3147cd44cff6132e51eac1a179c1fc3d405faacc diff --git a/libctsim/phantom.cpp b/libctsim/phantom.cpp index aff37a0..8d02d11 100644 --- a/libctsim/phantom.cpp +++ b/libctsim/phantom.cpp @@ -7,9 +7,9 @@ ** Date Started: Aug 1984 ** ** This is part of the CTSim program -** Copyright (C) 1983-2000 Kevin Rosenberg +** Copyright (c) 1983-2001 Kevin Rosenberg ** -** $Id: phantom.cpp,v 1.18 2000/09/04 09:06:46 kevin Exp $ +** $Id: phantom.cpp,v 1.32 2002/05/28 18:43:16 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 @@ -27,29 +27,26 @@ #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 int Phantom::PHM_SHEPP_LOGAN = 1; +const int Phantom::PHM_UNITPULSE = 2; const char* Phantom::s_aszPhantomName[] = { {"herman"}, - {"herman-b"}, {"shepp-logan"}, - {"shepp-logan-b"}, - {"unitpulse"}, + {"unit-pulse"}, }; const char* Phantom::s_aszPhantomTitle[] = { {"Herman Head"}, - {"Herman Head (Bordered)"}, {"Shepp-Logan"}, - {"Shepp-Logan (Bordered)"}, {"Unit Pulse"}, }; @@ -80,7 +77,6 @@ Phantom::init () m_xmax = -1E30; m_ymin = 1E30; m_ymax = -1E30; - m_diameter = 0; m_composition = P_PELEMS; m_fail = false; m_id = PHM_INVALID; @@ -98,10 +94,10 @@ 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); } @@ -109,27 +105,27 @@ const char* Phantom::convertPhantomIDToTitle (int phmID) { 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) { int id = PHM_INVALID; - + for (int i = 0; i < s_iPhantomCount; i++) - if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) { - id = i; - break; - } - - return (id); + if (strcasecmp (phmName, s_aszPhantomName[i]) == 0) { + id = i; + break; + } + + return (id); } - + bool Phantom::createFromPhantom (const char* const phmName) @@ -141,7 +137,7 @@ Phantom::createFromPhantom (const char* const phmName) m_failMessage += phmName; return false; } - + m_name = phmName; createFromPhantom (phmid); return true; @@ -151,119 +147,108 @@ 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; - } - + { + 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; - + return true; } /* METHOD IDENTIFICATION - * createFromFile Add PhantomElements from file - * - * SYNOPSIS - * createFromFile (filename) - * - * RETURNS - * true if pelem were added - * false if an pelem not added - */ +* createFromFile Add PhantomElements from file +* +* SYNOPSIS +* createFromFile (filename) +* +* RETURNS +* true if pelem were added +* false if an pelem not added +*/ 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); - + m_name = fname; - 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); + + 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 (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; + if (status == static_cast(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); } +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 - */ +* 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); - + m_listPElem.push_front (pelem); - + // update phantom limits if (m_xmin > pelem->xmin()) m_xmin = pelem->xmin(); if (m_xmax < pelem->xmax()) m_xmax = pelem->xmax(); 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++; } @@ -274,40 +259,72 @@ Phantom::addPElem (const char *type, const double cx, const double cy, const dou /* NAME - * print Print vertices of Phantom pelems - * - * SYNOPSIS - * print (phm) - */ +* print Print vertices of Phantom pelems +* +* SYNOPSIS +* print (phm) +*/ void -Phantom::print () const +Phantom::print (std::ostream& os) 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); + os << "Number of PElements: " << m_nPElem << "\n"; + os << "Limits: xmin=" << m_xmin << ", ymin=" << m_ymin << ", xmax=" << m_xmax << ", ymax=" << m_ymax << "\n"; - 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())); + 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"; - printf("xmin=%7.3g ymin=%7.3g xmax=%7.3g ymax=%7.3g\n", - (*i)->xmin(), (*i)->ymin(), (*i)->xmax(), (*i)->ymax()); + 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"; - // for (int i = 0; i < m_nPoints; i++) - // printf("\t%8.3g %8.3g\n", i->xOutline()[i], i->yOutline()[i]); + 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 @@ -315,10 +332,10 @@ Phantom::show () const { SGPDriver driverSGP ("Phantom Show"); SGP sgp (driverSGP); - + show (sgp); - - cout << "Press return to continue"; + + std::cout << "Press return to continue"; cio_kb_getc(); } @@ -327,26 +344,26 @@ Phantom::show (SGP& sgp) const { double wsize = m_xmax - m_xmin; if ((m_ymax - m_ymin) > wsize) - wsize = m_ymax - m_ymin; + wsize = m_ymax - m_ymin; wsize *= 1.01; double halfWindow = wsize / 2; - + double xcent = m_xmin + (m_xmax - m_xmin) / 2; double ycent = m_ymin + (m_ymax - m_ymin) / 2; - + sgp.setWindow (xcent - halfWindow, ycent - halfWindow, xcent + halfWindow, ycent + halfWindow); - + draw (sgp); } #endif /* NAME - * draw Draw vector outline of Phantom - * - * SYNOPSIS - * draw () - */ +* draw Draw vector outline of Phantom +* +* SYNOPSIS +* draw () +*/ #ifdef HAVE_SGP void @@ -359,13 +376,13 @@ Phantom::draw (SGP& sgp) const /* 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. - */ +* 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 () @@ -383,20 +400,14 @@ Phantom::addStdSheppLogan () addPElem ("ellipse", 0.5538, -0.3858, 0.0330, 0.2060, -18.0, 0.03); } -void -Phantom::addStdSheppLoganBordered () -{ - addStdSheppLogan (); - addPElem ("rectangle", 0.000, 0.0000, 0.8600, 1.150, 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. - */ +* 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 () @@ -418,107 +429,112 @@ Phantom::addStdHerman () addPElem ("ellipse", 0.000, 0.00, 7.875, 5.7187, 90.00, -0.206); } -void -Phantom::addStdHermanBordered () -{ - addStdHerman(); - addPElem ("rectangle", 0.000, 0.00, 10.780, 8.110, 90.00, 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, const int in_nsample, const int trace) const +Phantom::convertToImagefile (ImageFile& im, double dViewRatio, const int in_nsample, const int trace) const { - convertToImagefile (im, in_nsample, trace, 0, im.nx(), true); + convertToImagefile (im, dViewRatio, 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, bool bStoreAtColumnPos) const +Phantom::convertToImagefile (ImageFile& im, const double dViewRatio, const int in_nsample, const int trace, + const int colStart, const int colCount, bool bStoreAtColumnPos) const { - int nx = im.nx(); - int ny = im.ny(); - if (nx < 2 || ny < 2) - return; + int iStorageOffset = (bStoreAtColumnPos ? colStart : 0); + convertToImagefile (im, im.nx(), dViewRatio, in_nsample, trace, colStart, colCount, iStorageOffset); +} +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 +{ + const int nx = im.nx(); + const int ny = im.ny(); + if (nx < 2 || ny < 2) + return; + int nsample = in_nsample; 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 xmin = xcent - phmradius; - double xmax = xcent + phmradius; - double ymin = ycent - phmradius; - double ymax = ycent + phmradius; - + double dHalflen = dViewRatio * (getDiameterBoundaryCircle() / SQRT2 / 2); + + 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 kyinc = yinc / nsample; double kxofs = kxinc / 2; /* offset of 1st point */ double kyofs = kyinc / 2; - + im.setAxisExtent (xmin, xmax, ymin, ymax); im.setAxisIncrement (xinc, yinc); - + 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; - } - + + for (int ix = 0; ix < colCount; ix++) { + int iColStore = ix + iStorageOffset; + ImageFileColumn vCol = v[iColStore]; + for (int iy = 0; iy < ny; iy++) + *vCol++ = 0; + } + 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) { - 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 */ + 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 */ - + if (nsample > 1) { - double factor = 1.0 / (nsample * nsample); - - for (int ix = 0; ix < colCount; ix++) + double factor = 1.0 / static_cast(nsample * nsample); + + + 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; + } } } @@ -533,77 +549,103 @@ Phantom::convertToImagefile (ImageFile& im, const int in_nsample, const int trac 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 ); - + 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; + else + sys_error (ERR_WARNING, "Unknown PhantomElement type %s [PhantomElement::PhantomElement]", type); + + return (type); +} - return (type); +const char* const +PhantomElement::convertTypeToName (PhmElemType iType) +{ + static 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 PhantomElement::makeTransformMatrices () { GRFMTX_2D temp; - + // 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); mult_mtx2 (m_xformObjToPhm, temp, m_xformObjToPhm); xlat_mtx2 (temp, m_cx, m_cy); mult_mtx2 (m_xformObjToPhm, temp, m_xformObjToPhm); - + // to map world Phantom coodinates to normalized PElem coords // translate by (-cx, -cy) // rotate by -rot // scale by (1/u, 1/v) - + xlat_mtx2 (m_xformPhmToObj, -m_cx, -m_cy); rot_mtx2 (temp, -m_rot); mult_mtx2 (m_xformPhmToObj, temp, m_xformPhmToObj); @@ -613,15 +655,15 @@ PhantomElement::makeTransformMatrices () /* 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 () @@ -629,7 +671,7 @@ PhantomElement::makeVectorOutline () double radius, theta, start, stop; double xfact, yfact; int cpts; - + m_nPoints = 0; switch (m_type) { case PELEM_RECTANGLE: @@ -702,10 +744,10 @@ PhantomElement::makeVectorOutline () // increase pelem extent by SCALE_PELEM_EXTENT to eliminate chance of // missing actual pelem maximum due to polygonal sampling - + xfact = (m_xmax - m_xmin) * SCALE_PELEM_EXTENT; yfact = (m_ymax - m_ymin) * SCALE_PELEM_EXTENT; - + m_xmin -= xfact; m_ymin -= yfact; m_xmax += xfact; @@ -714,39 +756,39 @@ PhantomElement::makeVectorOutline () /* 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 - */ +* 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); + if (r <= 0.0) + sys_error (ERR_WARNING, "negative or zero radius in calc_arc()"); - 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; - } + 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; + } } @@ -761,26 +803,26 @@ PhantomElement::calcArcPoints (double x[], double y[], const int pts, const doub 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 - */ +* 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); - - return static_cast (POINTS_PER_CIRCLE * theta / TWOPI + 1.5); + theta = clamp (theta, 0., TWOPI); + + return static_cast (POINTS_PER_CIRCLE * theta / TWOPI + 1.5); } @@ -791,42 +833,42 @@ PhantomElement::clipLineWorldCoords (double& x1, double& y1, double& x2, double 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 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 xform_mtx2 (m_xformObjToPhm, x1, y1); xform_mtx2 (m_xformObjToPhm, x2, y2); - + return true; } /* 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 { bool accept = false; - + switch (m_type) { case PELEM_RECTANGLE: double rect[4]; @@ -850,7 +892,7 @@ PhantomElement::clipLineNormalizedCoords (double& x1, double& y1, double& x2, do sys_error (ERR_WARNING, "Illegal pelem type %d [pelem_clip_line]", m_type); break; } - + return(accept); } @@ -876,7 +918,7 @@ PhantomElement::isPointInside (double x, double y, const CoordType coord_type) c sys_error(ERR_WARNING, "Illegal coordinate type in pelem_is_point_inside"); return (false); } - + switch (m_type) { case PELEM_RECTANGLE: if (x > 1. || x < -1. || y > 1. || y < -1.) @@ -898,13 +940,13 @@ PhantomElement::isPointInside (double x, double y, const CoordType coord_type) c 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 - + case PELEM_SEGMENT: if (x > 1. || x < -1. || y > 0.) - return (false); // clip against y > 0 + 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) @@ -913,22 +955,22 @@ PhantomElement::isPointInside (double x, double y, const CoordType coord_type) c 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; } - + return (false); }