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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkVersorTransform.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:49 $ |
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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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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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DEF |
#ifndef _itkVersorTransform_txx |
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DEF |
#define _itkVersorTransform_txx |
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#include "itkVersorTransform.h" |
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namespace itk |
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{ |
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// Constructor with default arguments |
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template <class TScalarType> |
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VersorTransform<TScalarType> |
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::VersorTransform() : |
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**Superclass(OutputSpaceDimension, ParametersDimension) |
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{ |
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m_Versor.SetIdentity(); |
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} |
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// Constructor with default arguments |
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template<class TScalarType> |
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VersorTransform<TScalarType>:: |
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VersorTransform(unsigned int spaceDimension, |
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unsigned int parametersDimension) : |
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**Superclass(spaceDimension,parametersDimension) |
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{ |
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m_Versor.SetIdentity(); |
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} |
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// Constructor with default arguments |
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template<class TScalarType> |
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VersorTransform<TScalarType>:: |
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VersorTransform(const MatrixType & matrix, |
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const OutputVectorType & offset) : |
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**Superclass(matrix, offset) |
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{ |
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this->ComputeMatrixParameters(); // called in MatrixOffset baseclass |
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} |
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// Set Parameters |
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template <class TScalarType> |
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void |
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VersorTransform<TScalarType> |
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::SetParameters( const ParametersType & parameters ) |
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{ |
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itkDebugMacro( << "Setting paramaters " << parameters ); |
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// Transfer the versor part |
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AxisType rightPart; |
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rightPart[0] = parameters[0]; |
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rightPart[1] = parameters[1]; |
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rightPart[2] = parameters[2]; |
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// The versor will compute the scalar part. |
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m_Versor.Set( rightPart ); |
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itkDebugMacro( <<"Versor is now " << m_Versor ); |
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this->ComputeMatrix(); |
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itkDebugMacro(<<"After setting paramaters "); |
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} |
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// Set Parameters |
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template <class TScalarType> |
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const typename VersorTransform<TScalarType>::ParametersType & |
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VersorTransform<TScalarType> |
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::GetParameters( void ) const |
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{ |
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this->m_Parameters[0] = this->m_Versor.GetRight()[0]; |
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this->m_Parameters[1] = this->m_Versor.GetRight()[1]; |
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this->m_Parameters[2] = this->m_Versor.GetRight()[2]; |
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return this->m_Parameters; |
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} |
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// Set Rotational Part |
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template <class TScalarType> |
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void |
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VersorTransform<TScalarType> |
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::SetRotation( const VersorType & versor ) |
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{ |
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m_Versor = versor; |
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this->ComputeMatrix(); |
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this->ComputeOffset(); |
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} |
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// Set Rotational Part |
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template <class TScalarType> |
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void |
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VersorTransform<TScalarType> |
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::SetRotation( const AxisType & axis, AngleType angle ) |
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{ |
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m_Versor.Set( axis, angle ); |
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this->ComputeMatrix(); |
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this->ComputeOffset(); |
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} |
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// Set Identity |
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template <class TScalarType> |
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void |
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VersorTransform<TScalarType> |
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::SetIdentity( ) |
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{ |
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Superclass::SetIdentity(); |
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m_Versor.SetIdentity(); |
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} |
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// Compute the matrix |
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template <class TScalarType> |
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void |
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VersorTransform<TScalarType> |
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::ComputeMatrix( void ) |
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{ |
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const TScalarType vx = m_Versor.GetX(); |
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const TScalarType vy = m_Versor.GetY(); |
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const TScalarType vz = m_Versor.GetZ(); |
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const TScalarType vw = m_Versor.GetW(); |
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const TScalarType xx = vx * vx; |
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const TScalarType yy = vy * vy; |
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const TScalarType zz = vz * vz; |
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const TScalarType xy = vx * vy; |
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const TScalarType xz = vx * vz; |
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const TScalarType xw = vx * vw; |
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const TScalarType yz = vy * vz; |
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const TScalarType yw = vy * vw; |
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const TScalarType zw = vz * vw; |
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MatrixType newMatrix; |
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newMatrix[0][0] = 1.0 - 2.0 * ( yy + zz ); |
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newMatrix[1][1] = 1.0 - 2.0 * ( xx + zz ); |
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newMatrix[2][2] = 1.0 - 2.0 * ( xx + yy ); |
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newMatrix[0][1] = 2.0 * ( xy - zw ); |
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newMatrix[0][2] = 2.0 * ( xz + yw ); |
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newMatrix[1][0] = 2.0 * ( xy + zw ); |
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newMatrix[2][0] = 2.0 * ( xz - yw ); |
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newMatrix[2][1] = 2.0 * ( yz + xw ); |
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newMatrix[1][2] = 2.0 * ( yz - xw ); |
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this->SetVarMatrix(newMatrix); |
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} |
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// Compute the matrix |
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template <class TScalarType> |
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void |
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VersorTransform<TScalarType> |
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::ComputeMatrixParameters( void ) |
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{ |
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m_Versor.Set( this->GetMatrix() ); |
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} |
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// Set parameters |
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template<class TScalarType> |
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const typename VersorTransform<TScalarType>::JacobianType & |
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VersorTransform<TScalarType>:: |
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GetJacobian( const InputPointType & p ) const |
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{ |
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typedef typename VersorType::ValueType ValueType; |
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// compute derivatives with respect to rotation |
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const ValueType vx = m_Versor.GetX(); |
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const ValueType vy = m_Versor.GetY(); |
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const ValueType vz = m_Versor.GetZ(); |
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const ValueType vw = m_Versor.GetW(); |
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this->m_Jacobian.Fill(0.0); |
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const double px = p[0]; |
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const double py = p[1]; |
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const double pz = p[2]; |
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const double vxx = vx * vx; |
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const double vyy = vy * vy; |
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const double vzz = vz * vz; |
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const double vww = vw * vw; |
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const double vxy = vx * vy; |
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const double vxz = vx * vz; |
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const double vxw = vx * vw; |
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const double vyz = vy * vz; |
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const double vyw = vy * vw; |
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const double vzw = vz * vw; |
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// compute Jacobian with respect to quaternion parameters |
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this->m_Jacobian[0][0] = 2.0 * ( (vyw+vxz)*py + (vzw-vxy)*pz) |
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*************************/ vw; |
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this->m_Jacobian[1][0] = 2.0 * ((vyw-vxz)*px -2*vxw *py + (vxx-vww)*pz) |
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*************************/ vw; |
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this->m_Jacobian[2][0] = 2.0 * ((vzw+vxy)*px + (vww-vxx)*py -2*vxw *pz) |
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*************************/ vw; |
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this->m_Jacobian[0][1] = 2.0 * ( -2*vyw *px + (vxw+vyz)*py + (vww-vyy)*pz) |
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*************************/ vw; |
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this->m_Jacobian[1][1] = 2.0 * ((vxw-vyz)*px + (vzw+vxy)*pz) |
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*************************/ vw; |
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this->m_Jacobian[2][1] = 2.0 * ((vyy-vww)*px + (vzw-vxy)*py -2*vyw *pz) |
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*************************/ vw; |
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this->m_Jacobian[0][2] = 2.0 * ( -2*vzw *px + (vzz-vww)*py + (vxw-vyz)*pz) |
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*************************/ vw; |
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this->m_Jacobian[1][2] = 2.0 * ((vww-vzz)*px -2*vzw *py + (vyw+vxz)*pz) |
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*************************/ vw; |
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this->m_Jacobian[2][2] = 2.0 * ((vxw+vyz)*px + (vyw-vxz)*py ) |
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*************************/ vw; |
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return this->m_Jacobian; |
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} |
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// Print self |
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template<class TScalarType> |
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void |
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VersorTransform<TScalarType>:: |
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PrintSelf(std::ostream &os, Indent indent) const |
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{ |
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Superclass::PrintSelf(os,indent); |
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os << indent << "Versor: " << m_Versor << std::endl; |
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} |
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} // namespace |
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#endif |
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