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/*
-----------------------------------------------------------------------
Copyright: 2010-2021, imec Vision Lab, University of Antwerp
2014-2021, CWI, Amsterdam
Contact: astra@astra-toolbox.com
Website: http://www.astra-toolbox.com/
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/>.
-----------------------------------------------------------------------
*/
#include "astra/ProjectionGeometry2D.h"
using namespace std;
namespace astra
{
//----------------------------------------------------------------------------------------
// Default constructor.
CProjectionGeometry2D::CProjectionGeometry2D() : configCheckData(0)
{
_clear();
}
//----------------------------------------------------------------------------------------
// Constructor.
CProjectionGeometry2D::CProjectionGeometry2D(int _iAngleCount,
int _iDetectorCount,
float32 _fDetectorWidth,
const float32* _pfProjectionAngles) : configCheckData(0)
{
_clear();
_initialize(_iAngleCount, _iDetectorCount, _fDetectorWidth, _pfProjectionAngles);
}
//----------------------------------------------------------------------------------------
// Destructor.
CProjectionGeometry2D::~CProjectionGeometry2D()
{
if (m_bInitialized) {
clear();
}
}
//----------------------------------------------------------------------------------------
// Clear all member variables, setting all numeric variables to 0 and all pointers to NULL.
// Should only be used by constructors. Otherwise use the clear() function.
void CProjectionGeometry2D::_clear()
{
m_iProjectionAngleCount = 0;
m_iDetectorCount = 0;
m_fDetectorWidth = 0.0f;
m_pfProjectionAngles = NULL;
m_bInitialized = false;
}
//----------------------------------------------------------------------------------------
// Clear all member variables, setting all numeric variables to 0 and all pointers to NULL.
void CProjectionGeometry2D::clear()
{
m_iProjectionAngleCount = 0;
m_iDetectorCount = 0;
m_fDetectorWidth = 0.0f;
if (m_bInitialized){
delete[] m_pfProjectionAngles;
}
m_pfProjectionAngles = NULL;
m_bInitialized = false;
}
//----------------------------------------------------------------------------------------
// Check all variable values.
bool CProjectionGeometry2D::_check()
{
ASTRA_CONFIG_CHECK(m_iDetectorCount > 0, "ProjectionGeometry2D", "Detector Count should be positive.");
ASTRA_CONFIG_CHECK(m_fDetectorWidth > 0.0f, "ProjectionGeometry2D", "Detector Width should be positive.");
ASTRA_CONFIG_CHECK(m_iProjectionAngleCount > 0, "ProjectionGeometry2D", "ProjectionAngleCount should be positive.");
ASTRA_CONFIG_CHECK(m_pfProjectionAngles != NULL, "ProjectionGeometry2D", "ProjectionAngles not initialized");
// autofix: angles in [0,2pi[
for (int i = 0; i < m_iProjectionAngleCount; i++) {
while (2*PI <= m_pfProjectionAngles[i]) m_pfProjectionAngles[i] -= 2*PI;
while (m_pfProjectionAngles[i] < 0) m_pfProjectionAngles[i] += 2*PI;
}
// success
return true;
}
//----------------------------------------------------------------------------------------
// Initialization with a Config object
bool CProjectionGeometry2D::initialize(const Config& _cfg)
{
ASTRA_ASSERT(_cfg.self);
ConfigStackCheck<CProjectionGeometry2D> CC("ProjectionGeometry2D", this, _cfg);
// uninitialize if the object was initialized before
if (m_bInitialized) {
clear();
}
// Required: DetectorCount
XMLNode node = _cfg.self.getSingleNode("DetectorCount");
ASTRA_CONFIG_CHECK(node, "ProjectionGeometry2D", "No DetectorCount tag specified.");
try {
m_iDetectorCount = node.getContentInt();
} catch (const StringUtil::bad_cast &e) {
ASTRA_CONFIG_CHECK(false, "ProjectionGeometry2D", "DetectorCount must be an integer.");
}
CC.markNodeParsed("DetectorCount");
if (!initializeAngles(_cfg))
return false;
// some checks
ASTRA_CONFIG_CHECK(m_iDetectorCount > 0, "ProjectionGeometry2D", "DetectorCount should be positive.");
return true;
}
bool CProjectionGeometry2D::initializeAngles(const Config& _cfg)
{
ConfigStackCheck<CProjectionGeometry2D> CC("ProjectionGeometry2D", this, _cfg);
// Required: DetectorWidth
XMLNode node = _cfg.self.getSingleNode("DetectorWidth");
ASTRA_CONFIG_CHECK(node, "ProjectionGeometry2D", "No DetectorWidth tag specified.");
try {
m_fDetectorWidth = node.getContentNumerical();
} catch (const StringUtil::bad_cast &e) {
ASTRA_CONFIG_CHECK(false, "ProjectionGeometry2D", "DetectorWidth must be numerical.");
}
CC.markNodeParsed("DetectorWidth");
// Required: ProjectionAngles
node = _cfg.self.getSingleNode("ProjectionAngles");
ASTRA_CONFIG_CHECK(node, "ProjectionGeometry2D", "No ProjectionAngles tag specified.");
vector<float32> angles;
try {
angles = node.getContentNumericalArray();
} catch (const StringUtil::bad_cast &e) {
ASTRA_CONFIG_CHECK(false, "ProjectionGeometry2D", "ProjectionAngles must be a numerical vector.");
}
m_iProjectionAngleCount = angles.size();
ASTRA_CONFIG_CHECK(m_iProjectionAngleCount > 0, "ProjectionGeometry2D", "Not enough ProjectionAngles specified.");
m_pfProjectionAngles = new float32[m_iProjectionAngleCount];
for (int i = 0; i < m_iProjectionAngleCount; i++) {
m_pfProjectionAngles[i] = angles[i];
}
CC.markNodeParsed("ProjectionAngles");
ASTRA_CONFIG_CHECK(m_pfProjectionAngles != NULL, "ProjectionGeometry2D", "ProjectionAngles not initialized");
ASTRA_CONFIG_CHECK(m_fDetectorWidth > 0.0f, "ProjectionGeometry2D", "DetectorWidth should be positive.");
return true;
}
//----------------------------------------------------------------------------------------
// Initialization.
bool CProjectionGeometry2D::_initialize(int _iProjectionAngleCount,
int _iDetectorCount,
float32 _fDetectorWidth,
const float32* _pfProjectionAngles)
{
if (m_bInitialized) {
clear();
}
// copy parameters
m_iProjectionAngleCount = _iProjectionAngleCount;
m_iDetectorCount = _iDetectorCount;
m_fDetectorWidth = _fDetectorWidth;
m_pfProjectionAngles = new float32[m_iProjectionAngleCount];
for (int i = 0; i < m_iProjectionAngleCount; i++) {
m_pfProjectionAngles[i] = _pfProjectionAngles[i];
}
// Interface class, so don't set m_bInitialized to true
return true;
}
//---------------------------------------------------------------------------------------
} // namespace astra
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