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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkSpatialOrientationAdapter.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:48 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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Portions of this code are covered under the VTK copyright. |
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See VTKCopyright.txt or http://www.kitware.com/VTKCopyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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*****PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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#ifndef _itkSpatialOrientationAdapter_txx |
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DEF |
#define _itkSpatialOrientationAdapter_txx |
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#include "itkSpatialOrientationAdapter.h" |
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#include "itkImageBase.h" |
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namespace itk |
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{ |
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namespace Function |
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{ |
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inline unsigned Max3(float x, float y, float z) |
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{ |
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const double obliquityThresholdCosineValue = 0.001; |
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double absX = vnl_math_abs(x); |
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double absY = vnl_math_abs(y); |
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double absZ = vnl_math_abs(z); |
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if ( ( absX > obliquityThresholdCosineValue ) && ( absX > absY ) && ( absX > absZ )) |
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{ |
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return 0; |
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} |
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else if ( ( absY > obliquityThresholdCosineValue ) && ( absY > absX ) && ( absY > absZ ) ) |
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{ |
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return 1; |
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} |
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else if ( ( absZ > obliquityThresholdCosineValue ) && ( absZ > absX ) && ( absZ > absY ) ) |
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{ |
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return 2; |
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} |
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// they must all be equal, so just say x |
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return 0; |
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} |
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inline int Sign(float x) |
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{ |
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if(x < 0) |
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return -1; |
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return 1; |
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} |
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} // namespace Function |
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template <int Dimension> |
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typename SpatialOrientationAdapter<Dimension>::OrientationType |
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SpatialOrientationAdapter<Dimension> |
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::FromDirectionCosines(const typename SpatialOrientationAdapter<Dimension>::DirectionType &Dir) |
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{ |
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// const typename ImageBase<VImageDimension>::DirectionType &direction = |
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// this->GetDirection(); |
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*int axes[9] = {0,0,0,0,0,0,0,0,0}; |
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int dominant_axis; |
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dominant_axis = Function::Max3(Dir[0][0],Dir[1][0],Dir[2][0]); |
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axes[dominant_axis] = Function::Sign(Dir[dominant_axis][0]); |
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dominant_axis = Function::Max3(Dir[0][1],Dir[1][1],Dir[2][1]); |
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axes[dominant_axis+3] = Function::Sign(Dir[dominant_axis][1]); |
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dominant_axis = Function::Max3(Dir[0][2],Dir[1][2],Dir[2][2]); |
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axes[dominant_axis+6] = Function::Sign(Dir[dominant_axis][2]); |
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SpatialOrientation::CoordinateTerms terms[3] = {SpatialOrientation::ITK_COORDINATE_UNKNOWN,SpatialOrientation::ITK_COORDINATE_UNKNOWN,SpatialOrientation::ITK_COORDINATE_UNKNOWN}; |
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for(unsigned i = 0; i < 3; i++) |
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{ |
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if(int(axes[(i*3)]) == 1) |
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{ |
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terms[i] = SpatialOrientation::ITK_COORDINATE_Right; |
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} |
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else if(axes[(i*3)] == -1) |
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{ |
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terms[i] = SpatialOrientation::ITK_COORDINATE_Left; |
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} |
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else if(axes[(i*3)+1] == 1) |
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{ |
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terms[i] = SpatialOrientation::ITK_COORDINATE_Anterior; |
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} |
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else if(axes[(i*3)+1] == -1) |
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{ |
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terms[i] = SpatialOrientation::ITK_COORDINATE_Posterior; |
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} |
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else if(axes[(i*3)+2] == 1) |
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{ |
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terms[i] = SpatialOrientation::ITK_COORDINATE_Inferior; |
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} |
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else if(axes[(i*3)+2] == -1) |
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{ |
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terms[i] = SpatialOrientation::ITK_COORDINATE_Superior; |
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} |
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} |
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// |
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// all terms must be defined, otherwise just punt |
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if(terms[0] == SpatialOrientation::ITK_COORDINATE_UNKNOWN || terms[1] == SpatialOrientation::ITK_COORDINATE_UNKNOWN || terms[2] == SpatialOrientation::ITK_COORDINATE_UNKNOWN) |
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{ |
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return SpatialOrientation::ITK_COORDINATE_ORIENTATION_RIP; |
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} |
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return static_cast<SpatialOrientation::ValidCoordinateOrientationFlags> |
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****((terms[0] << |
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SpatialOrientation::ITK_COORDINATE_PrimaryMinor) + |
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(terms[1] << |
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SpatialOrientation::ITK_COORDINATE_SecondaryMinor) + |
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(terms[2] << |
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SpatialOrientation::ITK_COORDINATE_TertiaryMinor)); |
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} |
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template <int Dimension> |
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typename SpatialOrientationAdapter<Dimension>::DirectionType |
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SpatialOrientationAdapter<Dimension> |
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::ToDirectionCosines(const typename SpatialOrientationAdapter<Dimension>::OrientationType &Or) |
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{ |
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typedef SpatialOrientation::CoordinateTerms CoordinateTerms; |
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CoordinateTerms terms[3]; |
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terms[0] = |
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****static_cast<CoordinateTerms> |
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****((Or >> SpatialOrientation::ITK_COORDINATE_PrimaryMinor) & 0xff); |
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terms[1] = |
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****static_cast<CoordinateTerms> |
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****((Or >> SpatialOrientation::ITK_COORDINATE_SecondaryMinor) & 0xff); |
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terms[2] = |
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****static_cast<CoordinateTerms> |
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****((Or >> SpatialOrientation::ITK_COORDINATE_TertiaryMinor) & 0xff); |
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DirectionType direction; |
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direction.Fill(0.0); |
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for(unsigned int i = 0; i < DirectionType::ColumnDimensions; i++) |
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{ |
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switch(terms[i]) |
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{ |
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case SpatialOrientation::ITK_COORDINATE_Right: |
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direction[0][i] = 1; |
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break; |
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case SpatialOrientation::ITK_COORDINATE_Left: |
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direction[0][i] = -1; |
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break; |
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case SpatialOrientation::ITK_COORDINATE_Anterior: |
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if ( DirectionType::RowDimensions > 1) direction[1][i] = 1; |
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********break; |
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case SpatialOrientation::ITK_COORDINATE_Posterior: |
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********if ( DirectionType::RowDimensions > 1) direction[1][i] = -1; |
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********break; |
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case SpatialOrientation::ITK_COORDINATE_Inferior: |
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********if ( DirectionType::RowDimensions > 2) direction[2][i] = 1; |
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********break; |
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case SpatialOrientation::ITK_COORDINATE_Superior: |
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********if ( DirectionType::RowDimensions > 2) direction[2][i] = -1; |
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********break; |
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case SpatialOrientation::ITK_COORDINATE_UNKNOWN: |
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default: |
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********//TODO: Should there be a default? Throw an exception? |
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********break; |
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} |
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} |
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//TODO: Should check that directions are orthoganal. |
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return direction; |
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} |
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} |
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#endif // _itkSpatialOrientationAdapter_txx |
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