X-Git-Url: http://git.kpe.io/?p=ctsim.git;a=blobdiff_plain;f=libctsim%2Fscanner.cpp;h=7081903f71b7984b17723c905a29c2b810826efc;hp=465523a1e3bc5e8fef7fa19b679f8aaaf436ae17;hb=50fd2b2fb2ff63871986e6853dbebad0ecd00698;hpb=c8ec665dde5df59539daf63e0a6a44f27550258b diff --git a/libctsim/scanner.cpp b/libctsim/scanner.cpp index 465523a..7081903 100644 --- a/libctsim/scanner.cpp +++ b/libctsim/scanner.cpp @@ -7,9 +7,9 @@ ** Date Started: 1984 ** ** This is part of the CTSim program -** Copyright (C) 1983-2000 Kevin Rosenberg +** Copyright (c) 1983-2001 Kevin Rosenberg ** -** $Id: scanner.cpp,v 1.24 2001/01/17 06:38:06 kevin Exp $ +** $Id: scanner.cpp,v 1.30 2001/02/08 06:25:07 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 @@ -82,10 +82,11 @@ DetectorArray::~DetectorArray (void) * int nSample Number of rays per detector */ -Scanner::Scanner (const Phantom& phm, const char* const geometryName, int nDet, int nView, int nSample, const double rot_anglen, const double dFocalLengthRatio, const double dFieldOfViewRatio) +Scanner::Scanner (const Phantom& phm, const char* const geometryName, + int nDet, int nView, int nSample, const double rot_anglen, + const double dFocalLengthRatio, const double dViewRatio, + double dScanRatio) { - m_phmLen = phm.maxAxisLength(); // maximal length along an axis - m_fail = false; m_idGeometry = convertGeometryNameToID (geometryName); if (m_idGeometry == GEOMETRY_INVALID) { @@ -107,20 +108,23 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, int nDet, m_nView = nView; m_nSample = nSample; m_dFocalLengthRatio = dFocalLengthRatio; - m_dFieldOfViewRatio = dFieldOfViewRatio; - m_dFocalLength = (m_phmLen * SQRT2 / 2) * dFocalLengthRatio; - m_dFieldOfView = m_phmLen * SQRT2 * dFieldOfViewRatio; + m_dViewRatio = dViewRatio; + m_dScanRatio = dScanRatio; + m_dViewDiameter = phm.getDiameterBoundaryCircle() * m_dViewRatio; + m_dFocalLength = (m_dViewDiameter / 2) * dFocalLengthRatio; + m_dScanDiameter = m_dViewDiameter * m_dScanRatio; m_dXCenter = phm.xmin() + (phm.xmax() - phm.xmin()) / 2; m_dYCenter = phm.ymin() + (phm.ymax() - phm.ymin()) / 2; m_rotLen = rot_anglen; m_rotInc = m_rotLen / m_nView; if (m_idGeometry == GEOMETRY_PARALLEL) { - m_detLen = m_dFieldOfView; + m_detLen = m_dScanDiameter; m_detInc = m_detLen / m_nDet; if (m_nDet % 2 == 0) // Adjust for Even number of detectors m_detInc = m_detLen / (m_nDet - 1); // center detector = (nDet/2)-1 + m_dFanBeamAngle = 0; double dHalfDetLen = m_detLen / 2; m_initPos.xs1 = m_dXCenter - dHalfDetLen; m_initPos.ys1 = m_dYCenter + m_dFocalLength; @@ -132,25 +136,20 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, int nDet, m_initPos.yd2 = m_dYCenter - m_dFocalLength; m_initPos.angle = 0.0; } else if (m_idGeometry == GEOMETRY_EQUILINEAR) { -#if 0 - double dAngle = (m_dFieldOfView / 2) / cos (asin (m_dFieldOfView / 2 / m_dFocalLength)); -#else - double dHalfSquare = m_dFieldOfView / SQRT2 / 2; - double dFocalPastPhm = m_dFocalLength - dHalfSquare; - if (dFocalPastPhm <= 0.) { + if (m_dScanDiameter / 2 >= m_dFocalLength) { m_fail = true; - m_failMessage = "Focal Point inside of phantom"; + m_failMessage = "Invalid geometry: Focal length must be larger than scan length"; return; } - double dAngle = atan( dHalfSquare / dFocalPastPhm ); -#endif - double dHalfDetLen = 2 * m_dFocalLength * tan (dAngle); + const double dAngle = asin ((m_dScanDiameter / 2) / m_dFocalLength); + const double dHalfDetLen = 2 * m_dFocalLength * tan (dAngle); m_detLen = dHalfDetLen * 2; m_detInc = m_detLen / m_nDet; if (m_nDet % 2 == 0) // Adjust for Even number of detectors m_detInc = m_detLen / (m_nDet - 1); // center detector = (nDet/2)-1 - + + m_dFanBeamAngle = dAngle * 2; m_initPos.angle = 0.0; m_initPos.xs1 = m_dXCenter; m_initPos.ys1 = m_dYCenter + m_dFocalLength; @@ -162,18 +161,13 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, int nDet, m_initPos.yd2 = m_dYCenter - m_dFocalLength; m_initPos.angle = 0.0; } else if (m_idGeometry == GEOMETRY_EQUIANGULAR) { -#if 0 - double dAngle = atan ((m_dFieldOfView / 2) / m_dFocalLength); -#else - double dHalfSquare = m_dFieldOfView / SQRT2 / 2; - double dFocalPastPhm = m_dFocalLength - dHalfSquare; - if (dFocalPastPhm <= 0.) { + if (m_dScanDiameter / 2 > m_dFocalLength) { m_fail = true; - m_failMessage = "Focal Point inside of phantom"; + m_failMessage = "Invalid geometry: Focal length must be larger than scan length"; return; } - double dAngle = atan ( dHalfSquare / dFocalPastPhm ); -#endif + const double dAngle = asin ((m_dScanDiameter / 2) / m_dFocalLength); + m_detLen = 2 * dAngle; m_detInc = m_detLen / m_nDet; if (m_nDet % 2 == 0) // Adjust for Even number of detectors @@ -182,6 +176,7 @@ Scanner::Scanner (const Phantom& phm, const char* const geometryName, int nDet, m_dAngularDetLen = m_detLen * 2; m_initPos.dAngularDet = -m_dAngularDetLen / 2; + m_dFanBeamAngle = dAngle * 2; m_initPos.angle = 0; m_initPos.xs1 = m_dXCenter; m_initPos.ys1 = m_dYCenter + m_dFocalLength;; @@ -308,23 +303,26 @@ Scanner::collectProjections (Projections& proj, const Phantom& phm, const int iS m_dXMaxWin = m_dXCenter + dHalfWindowSize; m_dYMinWin = m_dYCenter - dHalfWindowSize; m_dYMaxWin = m_dYCenter + dHalfWindowSize; - double dHalfPhmLen = m_phmLen / 2; m_pSGP->setWindow (m_dXMinWin, m_dYMinWin, m_dXMaxWin, m_dYMaxWin); m_pSGP->setRasterOp (RO_COPY); + m_pSGP->setColor (C_RED); m_pSGP->moveAbs (0., 0.); - m_pSGP->drawRect (m_dXCenter - dHalfPhmLen, m_dYCenter - dHalfPhmLen, m_dXCenter + dHalfPhmLen, m_dYCenter + dHalfPhmLen); + m_pSGP->drawCircle (m_dViewDiameter / 2); + m_pSGP->moveAbs (0., 0.); + m_pSGP->setColor (C_GREEN); m_pSGP->drawCircle (m_dFocalLength); m_pSGP->setColor (C_BLUE); + m_pSGP->setTextPointSize (9); phm.draw (*m_pSGP); m_dTextHeight = m_pSGP->getCharHeight (); traceShowParam ("Phantom:", "%s", PROJECTION_TRACE_ROW_PHANT_ID, C_BLACK, phm.name().c_str()); traceShowParam ("Geometry:", "%s", PROJECTION_TRACE_ROW_GEOMETRY, C_BLUE, convertGeometryIDToName(m_idGeometry)); traceShowParam ("Focal Length Ratio:", "%.2f", PROJECTION_TRACE_ROW_FOCAL_LENGTH, C_BLUE, m_dFocalLengthRatio); - traceShowParam ("Field Of View Ratio:", "%.2f", PROJECTION_TRACE_ROW_FIELD_OF_VIEW, C_BLUE, m_dFieldOfViewRatio); +// traceShowParam ("Field Of View Ratio:", "%.2f", PROJECTION_TRACE_ROW_FIELD_OF_VIEW, C_BLUE, m_dFieldOfViewRatio); traceShowParam ("Num Detectors:", "%d", PROJECTION_TRACE_ROW_NDET, C_BLUE, proj.nDet()); traceShowParam ("Num Views:", "%d", PROJECTION_TRACE_ROW_NVIEW, C_BLUE, proj.nView()); traceShowParam ("Samples / Ray:", "%d", PROJECTION_TRACE_ROW_SAMPLES, C_BLUE, m_nSample); @@ -535,13 +533,24 @@ Scanner::traceShowParamRasterOp (int iRasterOp, const char *szLabel, const char #ifdef HAVE_SGP if (m_pSGP) { m_pSGP->setRasterOp (iRasterOp); - double dYPos = m_dYMaxWin - (row * m_dTextHeight); - m_pSGP->moveAbs (m_dXMinWin, dYPos); m_pSGP->setTextColor (color, -1); -// m_pSGP->drawText (szLabel); double dValueOffset = (m_dXMaxWin - m_dXMinWin) / 4; - m_pSGP->moveAbs (m_dXMinWin + dValueOffset, dYPos); -// m_pSGP->drawText (szValue); + if (row < 4) { + double dYPos = m_dYMaxWin - (row * m_dTextHeight); + double dXPos = m_dXMinWin; + m_pSGP->moveAbs (dXPos, dYPos); + m_pSGP->drawText (szLabel); + m_pSGP->moveAbs (dXPos + dValueOffset, dYPos); + m_pSGP->drawText (szValue); + } else { + row -= 4; + double dYPos = m_dYMaxWin - (row * m_dTextHeight); + double dXPos = m_dXMinWin + (m_dXMaxWin - m_dXMinWin) * 0.5; + m_pSGP->moveAbs (dXPos, dYPos); + m_pSGP->drawText (szLabel); + m_pSGP->moveAbs (dXPos + dValueOffset, dYPos); + m_pSGP->drawText (szValue); + } } else #endif {