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/*
//
// Copyright 2016 Google, Inc.
//
// Copyright 1997-2009 Torsten Rohlfing
//
// Copyright 2004-2012 SRI International
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit 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 Computational Morphometry Toolkit 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 Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#ifndef __cmtkUniformVolumeInterpolatorBase_h_included_
#define __cmtkUniformVolumeInterpolatorBase_h_included_
#include <cmtkconfig.h>
#include <System/cmtkSmartPtr.h>
#include <System/cmtkSmartConstPtr.h>
#include <Base/cmtkVector3D.h>
#include <Base/cmtkUniformVolume.h>
#include <Base/cmtkInterpolator.h>
#include <vector>
namespace
cmtk
{
/** \addtogroup Base */
//@{
/** Base class for kernel-based uniform volume.
*/
class UniformVolumeInterpolatorBase
{
public:
/// This class type.
typedef UniformVolumeInterpolatorBase Self;
/// Smart pointer to this class.
typedef SmartPointer<Self> SmartPtr;
/// Smart pointer-to-const to this class.
typedef SmartConstPointer<Self> SmartConstPtr;
/// Constructor.
UniformVolumeInterpolatorBase( const UniformVolume& volume )
{
this->SetVolume( volume );
}
/// Virtual dummy destructor.
virtual ~UniformVolumeInterpolatorBase() {};
/** Set volume.
* This function sets a smart pointer to the volume the class will interpolate
* from. It may also perform some pre-computations to speed up interpolation,
* such as indexing etc. It does not perform any interpolation itself.
*/
virtual void SetVolume( const UniformVolume& volume /*!< Source volume for interpolation */ );
/** Get data at location.
*
* This function performs interpolation of one value from m_Volume at location
* v using the interpolation function given as the class template parameter.
*
* This function should return true if a value can be interpolated from
* m_Volume at v, and it should return false if v is outside the range
* where a value can be interpolated (i.e., outside the volume boundaries).
*
*\return True is the interpolation was successful and a valid value is returned in "value".
*/
virtual bool GetDataAt( const Vector3D& v /*!< Location for interpolation.*/, Types::DataItem& value /*!< The interpolated value is stored via this reference*/ ) const = 0;
/** Get data at a pre-computed relative pixel index. This is faster if we already know the pixel index and fractional coordinate of a location.
*\return Interpolated value.
*/
virtual Types::DataItem GetDataDirect( const Types::GridIndexType* imageGridPoint /*!< Grid index in image */, const Types::Coordinate* insidePixel /*!< Relative position inside indexed pixel */ ) const = 0;
protected:
/// Pointer to volume data array.
std::vector<Types::DataItem> m_VolumeDataArray;
/// Image dimensions.
DataGrid::IndexType m_VolumeDims;
/// Image pixel size.
UniformVolume::CoordinateVectorType m_VolumeDeltas;
/// Image offset vector.
UniformVolume::CoordinateVectorType m_VolumeOffset;
/// Index increment when increasing "j" pixel index (i.e., moving to next image row).
Types::GridIndexType m_NextJ;
/// Index increment when increasing "k" pixel index (i.e., moving to next image plane).
Types::GridIndexType m_NextK;
/// Get offset from pixel index.
size_t GetOffsetFromIndex( const Types::GridIndexType i /*!< Grid index #0 */, const Types::GridIndexType j /*!< Grid index #1 */, const Types::GridIndexType k /*!< Grid index #2 */ ) const
{
return i + j * this->m_NextJ + k * this->m_NextK;
}
};
//@}
} // namespace cmtk
#endif // #ifndef __cmtkUniformVolumeInterpolatorBase_h_included_
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