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+/*
+-----------------------------------------------------------------------
+Copyright: 2010-2015, iMinds-Vision Lab, University of Antwerp
+ 2014-2015, CWI, Amsterdam
+
+Contact: astra@uantwerpen.be
+Website: http://sf.net/projects/astra-toolbox
+
+This file is part of the ASTRA Toolbox.
+
+
+The ASTRA Toolbox is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+The ASTRA Toolbox is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
+
+-----------------------------------------------------------------------
+$Id$
+*/
+
+#include "astra/ParallelVecProjectionGeometry2D.h"
+
+#include <cstring>
+#include <sstream>
+#include <boost/lexical_cast.hpp>
+
+using namespace std;
+
+namespace astra
+{
+
+//----------------------------------------------------------------------------------------
+// Default constructor. Sets all variables to zero.
+CParallelVecProjectionGeometry2D::CParallelVecProjectionGeometry2D()
+{
+ _clear();
+ m_pProjectionAngles = 0;
+}
+
+//----------------------------------------------------------------------------------------
+// Constructor.
+CParallelVecProjectionGeometry2D::CParallelVecProjectionGeometry2D(int _iProjectionAngleCount,
+ int _iDetectorCount,
+ const SParProjection* _pProjectionAngles)
+{
+ this->initialize(_iProjectionAngleCount,
+ _iDetectorCount,
+ _pProjectionAngles);
+}
+
+//----------------------------------------------------------------------------------------
+// Copy Constructor
+CParallelVecProjectionGeometry2D::CParallelVecProjectionGeometry2D(const CParallelVecProjectionGeometry2D& _projGeom)
+{
+ _clear();
+ this->initialize(_projGeom.m_iProjectionAngleCount,
+ _projGeom.m_iDetectorCount,
+ _projGeom.m_pProjectionAngles);
+}
+
+//----------------------------------------------------------------------------------------
+// Destructor.
+CParallelVecProjectionGeometry2D::~CParallelVecProjectionGeometry2D()
+{
+ // TODO
+ delete[] m_pProjectionAngles;
+}
+
+
+//----------------------------------------------------------------------------------------
+// Initialization.
+bool CParallelVecProjectionGeometry2D::initialize(int _iProjectionAngleCount,
+ int _iDetectorCount,
+ const SParProjection* _pProjectionAngles)
+{
+ m_iProjectionAngleCount = _iProjectionAngleCount;
+ m_iDetectorCount = _iDetectorCount;
+ m_pProjectionAngles = new SParProjection[m_iProjectionAngleCount];
+ for (int i = 0; i < m_iProjectionAngleCount; ++i)
+ m_pProjectionAngles[i] = _pProjectionAngles[i];
+
+ // TODO: check?
+
+ // success
+ m_bInitialized = _check();
+ return m_bInitialized;
+}
+
+//----------------------------------------------------------------------------------------
+// Initialization with a Config object
+bool CParallelVecProjectionGeometry2D::initialize(const Config& _cfg)
+{
+ ASTRA_ASSERT(_cfg.self);
+ ConfigStackCheck<CProjectionGeometry2D> CC("ParallelVecProjectionGeometry2D", this, _cfg);
+
+ XMLNode* node;
+
+ // TODO: Fix up class hierarchy... this class doesn't fit very well.
+ // initialization of parent class
+ //CProjectionGeometry2D::initialize(_cfg);
+
+ // Required: DetectorCount
+ node = _cfg.self->getSingleNode("DetectorCount");
+ ASTRA_CONFIG_CHECK(node, "ParallelVecProjectionGeometry2D", "No DetectorRowCount tag specified.");
+ m_iDetectorCount = boost::lexical_cast<int>(node->getContent());
+ ASTRA_DELETE(node);
+ CC.markNodeParsed("DetectorCount");
+
+ // Required: Vectors
+ node = _cfg.self->getSingleNode("Vectors");
+ ASTRA_CONFIG_CHECK(node, "ParallelVecProjectionGeometry2D", "No Vectors tag specified.");
+ vector<float32> data = node->getContentNumericalArray();
+ CC.markNodeParsed("Vectors");
+ ASTRA_DELETE(node);
+ ASTRA_CONFIG_CHECK(data.size() % 6 == 0, "ParallelVecProjectionGeometry2D", "Vectors doesn't consist of 6-tuples.");
+ m_iProjectionAngleCount = data.size() / 6;
+ m_pProjectionAngles = new SParProjection[m_iProjectionAngleCount];
+
+ for (int i = 0; i < m_iProjectionAngleCount; ++i) {
+ SParProjection& p = m_pProjectionAngles[i];
+ p.fRayX = data[6*i + 0];
+ p.fRayY = data[6*i + 1];
+ p.fDetUX = data[6*i + 4];
+ p.fDetUY = data[6*i + 5];
+
+ // The backend code currently expects the corner of the detector, while
+ // the matlab interface supplies the center
+ p.fDetSX = data[6*i + 2] - 0.5f * m_iDetectorCount * p.fDetUX;
+ p.fDetSY = data[6*i + 3] - 0.5f * m_iDetectorCount * p.fDetUY;
+ }
+
+
+
+ // success
+ m_bInitialized = _check();
+ return m_bInitialized;
+}
+
+//----------------------------------------------------------------------------------------
+// Clone
+CProjectionGeometry2D* CParallelVecProjectionGeometry2D::clone()
+{
+ return new CParallelVecProjectionGeometry2D(*this);
+}
+
+//----------------------------------------------------------------------------------------
+// is equal
+bool CParallelVecProjectionGeometry2D::isEqual(CProjectionGeometry2D* _pGeom2) const
+{
+ if (_pGeom2 == NULL) return false;
+
+ // try to cast argument to CParallelVecProjectionGeometry2D
+ CParallelVecProjectionGeometry2D* pGeom2 = dynamic_cast<CParallelVecProjectionGeometry2D*>(_pGeom2);
+ if (pGeom2 == NULL) return false;
+
+ // both objects must be initialized
+ if (!m_bInitialized || !pGeom2->m_bInitialized) return false;
+
+ // check all values
+ if (m_iProjectionAngleCount != pGeom2->m_iProjectionAngleCount) return false;
+ if (m_iDetectorCount != pGeom2->m_iDetectorCount) return false;
+
+ for (int i = 0; i < m_iProjectionAngleCount; ++i) {
+ if (memcmp(&m_pProjectionAngles[i], &pGeom2->m_pProjectionAngles[i], sizeof(m_pProjectionAngles[i])) != 0) return false;
+ }
+
+ return true;
+}
+
+//----------------------------------------------------------------------------------------
+// Is of type
+bool CParallelVecProjectionGeometry2D::isOfType(const std::string& _sType)
+{
+ return (_sType == "parallel_vec");
+}
+
+//----------------------------------------------------------------------------------------
+
+CVector3D CParallelVecProjectionGeometry2D::getProjectionDirection(int _iProjectionIndex, int _iDetectorIndex /* = 0 */)
+{
+ CVector3D vOutput(0.0f, 0.0f, 0.0f);
+
+ // not implemented
+ ASTRA_ASSERT(false);
+
+ return vOutput;
+}
+
+//----------------------------------------------------------------------------------------
+
+void CParallelVecProjectionGeometry2D::getRayParams(int _iRow, int _iColumn, float32& _fT, float32& _fTheta) const
+{
+ // not implemented
+ ASTRA_ASSERT(false);
+}
+
+//----------------------------------------------------------------------------------------
+
+bool CParallelVecProjectionGeometry2D::_check()
+{
+ // TODO
+ return true;
+}
+
+
+//----------------------------------------------------------------------------------------
+// Get the configuration object
+Config* CParallelVecProjectionGeometry2D::getConfiguration() const
+{
+ Config* cfg = new Config();
+ cfg->initialize("ProjectionGeometry2D");
+ cfg->self->addAttribute("type", "parallel_vec");
+ cfg->self->addChildNode("DetectorCount", getDetectorCount());
+ std::string vectors = "";
+ for (int i = 0; i < m_iProjectionAngleCount; ++i) {
+ SParProjection& p = m_pProjectionAngles[i];
+ vectors += boost::lexical_cast<string>(p.fRayX) + ",";
+ vectors += boost::lexical_cast<string>(p.fRayY) + ",";
+ vectors += boost::lexical_cast<string>(p.fDetSX + 0.5f * m_iDetectorCount * p.fDetUX) + ",";
+ vectors += boost::lexical_cast<string>(p.fDetSY + 0.5f * m_iDetectorCount * p.fDetUY) + ",";
+ vectors += boost::lexical_cast<string>(p.fDetUX) + ",";
+ vectors += boost::lexical_cast<string>(p.fDetUY);
+ if (i < m_iProjectionAngleCount-1) vectors += ';';
+ }
+ cfg->self->addChildNode("Vectors", vectors);
+ return cfg;
+}
+//----------------------------------------------------------------------------------------
+
+
+} // namespace astra