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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
/*=========================================================================
*
* Portions of this file are subject to the VTK Toolkit Version 3 copyright.
*
* Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
*
* For complete copyright, license and disclaimer of warranty information
* please refer to the NOTICE file at the top of the ITK source tree.
*
*=========================================================================*/
#ifndef itkSpatialOrientationAdapter_h
#define itkSpatialOrientationAdapter_h
#include "itkOrientationAdapterBase.h"
#include "itkSpatialOrientation.h"
#include "itkConceptChecking.h"
namespace itk
{
//
// Helper functions, better than Macros
//
namespace Function
{
inline unsigned Max3(double x, double y, double z)
{
const double obliquityThresholdCosineValue = 0.001;
double absX = itk::Math::abs(x);
double absY = itk::Math::abs(y);
double absZ = itk::Math::abs(z);
if ( ( absX > obliquityThresholdCosineValue ) && ( absX > absY ) && ( absX > absZ ) )
{
return 0;
}
else if ( ( absY > obliquityThresholdCosineValue ) && ( absY > absX ) && ( absY > absZ ) )
{
return 1;
}
else if ( ( absZ > obliquityThresholdCosineValue ) && ( absZ > absX ) && ( absZ > absY ) )
{
return 2;
}
// they must all be equal, so just say x
return 0;
}
inline int Sign(double x)
{
if ( x < 0 )
{
return -1;
}
return 1;
}
} // namespace Function
/** \class SpatialOrientationAdapter
* \brief Converts SpatialOrientation flags to/from direction cosines.
* \ingroup ITKCommon
*/
class ITKCommon_EXPORT SpatialOrientationAdapter:
public OrientationAdapterBase< SpatialOrientation::ValidCoordinateOrientationFlags, 3 >
{
public:
/** typedef for superclass */
typedef SpatialOrientationAdapter Self;
typedef OrientationAdapterBase< SpatialOrientation::ValidCoordinateOrientationFlags, 3 >
Superclass;
typedef SpatialOrientation::ValidCoordinateOrientationFlags OrientationType;
/** typedef for direction cosines */
typedef Superclass::DirectionType DirectionType;
/** Constructor */
SpatialOrientationAdapter() {}
/** convert from direction cosines. */
virtual OrientationType FromDirectionCosines(const DirectionType & Dir) ITK_OVERRIDE;
/** convert to direction cosines. */
virtual DirectionType ToDirectionCosines(const OrientationType & Or) ITK_OVERRIDE;
};
} // namespace itk
#endif // itkSpatialOrientationAdapter_h
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