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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/>.
-----------------------------------------------------------------------
*/
#ifndef _INC_ASTRA_FLOAT32PROJECTIONDATA2D
#define _INC_ASTRA_FLOAT32PROJECTIONDATA2D
#include "Float32Data2D.h"
#include "ProjectionGeometry2D.h"
namespace astra {
/**
* This class represents two-dimensional Projection Data.
*
* It contains member functions for accessing this data and for performing
* elementary computations on the data.
* The data block is "owned" by the class, meaning that the class is
* responsible for deallocation of the memory involved.
*
* The projection data is stored as a series of consecutive rows, where
* each row contains the data for a single projection.
*/
class _AstraExport CFloat32ProjectionData2D : public CFloat32Data2D {
public:
/**
* Default constructor. Sets all numeric member variables to 0 and all pointer member variables to NULL.
*
* If an object is constructed using this default constructor, it must always be followed by a call
* to one of the init() methods before the object can be used. Any use before calling init() is not allowed,
* except calling the member function isInitialized().
*
*/
CFloat32ProjectionData2D();
/**
* Constructor. Create an instance of the CFloat32ProjectionData2D class without initializing the data.
*
* Memory is allocated for the data block. The allocated memory is not cleared and
* its contents after construction is undefined. Construction may be followed by a
* call to copyData() to fill the memory block.
* The size of the data is determined by the specified projection geometry object.
*
* @param _pGeometry Projection Geometry object. This object will be HARDCOPIED into this class.
*/
CFloat32ProjectionData2D(CProjectionGeometry2D* _pGeometry);
/**
* Constructor. Create an instance of the CFloat32ProjectionData2D class with initialization of the data.
*
* Creates an instance of the CFloat32ProjectionData2D class. Memory
* is allocated for the data block and the contents of the memory pointed to by
* _pfData is copied into the allocated memory.
* The size of the data is determined by the specified projection geometry object.
*
* @param _pGeometry Projection Geometry object. This object will be HARDCOPIED into this class.
* @param _pfData pointer to a one-dimensional float32 data block
*/
CFloat32ProjectionData2D(CProjectionGeometry2D* _pGeometry, float32* _pfData);
/**
* Constructor. Create an instance of the CFloat32ProjectionData2D class with initialization of the data.
*
* Creates an instance of the CFloat32ProjectionData2D class. Memory
* is allocated for the data block and the contents of the memory pointed to by
* _pfData is copied into the allocated memory.
* The size of the data is determined by the specified projection geometry object.
*
* @param _pGeometry Projection Geometry object. This object will be HARDCOPIED into this class.
* @param _fScalar scalar value to be put at each index.
*/
CFloat32ProjectionData2D(CProjectionGeometry2D* _pGeometry, float32 _fScalar);
/**
* Copy constructor
*/
CFloat32ProjectionData2D(const CFloat32ProjectionData2D& _other);
/** Constructor. Create an instance of the CFloat32ProjectionData2D class with pre-allocated memory.
*
* Creates an instance of the CFloat32ProjectionData2D class. Memory
* is pre-allocated and passed via the abstract CFloat32CustomMemory handle
* class. The handle will be deleted when the memory can be freed.
* You should override the destructor to provide custom behaviour on free.
*
* @param _pGeometry Projection Geometry object. This object will be HARDCOPIED into this class.
* @param _pCustomMemory custom memory handle
*
*/
CFloat32ProjectionData2D(CProjectionGeometry2D* _pGeometry, CFloat32CustomMemory* _pCustomMemory);
/**
* Assignment operator
*/
CFloat32ProjectionData2D& operator=(const CFloat32ProjectionData2D& _other);
/**
* Destructor.
*/
virtual ~CFloat32ProjectionData2D();
/** Initialization. Initializes an instance of the CFloat32ProjectionData2D class, without filling the data block.
*
* Initializes an instance of the CFloat32Data2D class. Memory is allocated for the
* data block. The allocated memory is not cleared and its contents after
* construction is undefined. Initialization may be followed by a call to
* copyData() to fill the memory block. If the object has been initialized before, the
* object is reinitialized and memory is freed and reallocated if necessary.
*
* @param _pGeometry Projection Geometry of the data. This object will be HARDCOPIED into this class.
* @return Initialization of the base class successfull.
*/
bool initialize(CProjectionGeometry2D* _pGeometry);
/** Initialization. Initializes an instance of the CFloat32Data2D class with initialization of the data block.
*
* Initializes an instance of the CFloat32Data2D class. Memory
* is allocated for the data block and the contents of the memory pointed to by
* _pfData is copied into the allocated memory. If the object has been initialized before, the
* object is reinitialized and memory is freed and reallocated if necessary.
*
* @param _pGeometry Projection Geometry of the data. This object will be HARDCOPIED into this class.
* @param _pfData pointer to a one-dimensional float32 data block
*/
bool initialize(CProjectionGeometry2D* _pGeometry, const float32* _pfData);
/** Initialization. Initializes an instance of the CFloat32Data2D class with initialization of the data block.
*
* Initializes an instance of the CFloat32Data2D class. Memory
* is allocated for the data block and the contents of the memory pointed to by
* _pfData is copied into the allocated memory. If the object has been initialized before, the
* object is reinitialized and memory is freed and reallocated if necessary.
*
* @param _pGeometry Projection Geometry of the data. This object will be HARDCOPIED into this class.
* @param _fScalar scalar value to be put at each index.
*/
bool initialize(CProjectionGeometry2D* _pGeometry, float32 _fScalar);
/** Initialization. Initializes an instance of the CFloat32ProjectionData2D class with pre-allocated memory.
*
* Memory is pre-allocated and passed via the abstract CFloat32CustomMemory handle
* class. The handle will be deleted when the memory can be freed.
* You should override the destructor to provide custom behaviour on free.
*
* @param _pGeometry Projection Geometry object. This object will be HARDCOPIED into this class.
* @param _pCustomMemory custom memory handle
*
*/
bool initialize(CProjectionGeometry2D* _pGeometry, CFloat32CustomMemory* _pCustomMemory);
/** Get the number of detectors.
*
* @return number of detectors
*/
int getDetectorCount() const;
/** Get the number of projection angles.
*
* @return number of projection angles
*/
int getAngleCount() const;
/** Get a pointer to the data of a single projection angle.
*
* The data memory is still "owned" by the
* CFloat32ProjectionData2D instance; this memory may NEVER be freed by the
* caller of this function. If changes are made to this data, the
* function updateStatistics() should be called after completion of
* all changes.
*
* @return pointer to the data
*/
float32* getSingleProjectionData(int _iAngleIndex);
/** Get a const pointer to the data of a single projection angle.
*
* The data memory is still "owned" by the
* CFloat32ProjectionData2D instance; this memory may NEVER be freed by the
* caller of this function.
*
* @return pointer to the data
*/
const float32* getSingleProjectionDataConst(int _iAngleIndex) const;
/** Which type is this class?
*
* @return DataType: PROJECTION
*/
virtual EDataType getType() const;
/** Get the projection geometry.
*
* @return pointer to projection geometry.
*/
virtual CProjectionGeometry2D* getGeometry() const;
/** Change the projection geometry.
* Note that this can't change the dimensions of the data.
*/
virtual void changeGeometry(CProjectionGeometry2D* pGeometry);
protected:
/** The projection geometry for this data.
*/
CProjectionGeometry2D* m_pGeometry;
};
//----------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------
// Get the number of detectors.
inline int CFloat32ProjectionData2D::getDetectorCount() const
{
ASTRA_ASSERT(m_bInitialized);
return m_iWidth;
}
//----------------------------------------------------------------------------------------
// Get the number of projection angles.
inline int CFloat32ProjectionData2D::getAngleCount() const
{
ASTRA_ASSERT(m_bInitialized);
return m_iHeight;
}
//----------------------------------------------------------------------------------------
// Get the projection geometry.
inline CProjectionGeometry2D* CFloat32ProjectionData2D::getGeometry() const
{
ASTRA_ASSERT(m_bInitialized);
return m_pGeometry;
}
//----------------------------------------------------------------------------------------
// Get type.
inline CFloat32Data2D::EDataType CFloat32ProjectionData2D::getType() const
{
return PROJECTION;
}
//----------------------------------------------------------------------------------------
} // end namespace astra
#endif // _INC_ASTRA_FLOAT32PROJECTIONDATA2D
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