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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkFiniteCylinderSpatialFunction.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:35 $ |
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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 __itkFiniteCylinderSpatialFunction_cpp |
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DEF |
#define __itkFiniteCylinderSpatialFunction_cpp |
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#include "itkFiniteCylinderSpatialFunction.h" |
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#include <math.h> |
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namespace itk |
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{ |
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template <unsigned int VDimension, typename TInput> |
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FiniteCylinderSpatialFunction<VDimension, TInput> |
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::FiniteCylinderSpatialFunction() |
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{ |
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m_Orientation.Fill(1.0); |
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m_AxisLength = 1.0; // Length of cylinder axis. |
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m_Radius = 1.0; // Radius of cylinder. |
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m_Center.Fill(0.0); // Origin of cylinder |
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} |
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template <unsigned int VDimension, typename TInput > |
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FiniteCylinderSpatialFunction<VDimension, TInput> |
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::~FiniteCylinderSpatialFunction() |
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{ |
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} |
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template <unsigned int VDimension, typename TInput> |
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typename FiniteCylinderSpatialFunction<VDimension, TInput>::OutputType |
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FiniteCylinderSpatialFunction<VDimension, TInput> |
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::Evaluate(const InputType& position) const |
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{ |
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double halfAxisLength = 0.5 * m_AxisLength; |
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Vector<double, VDimension> orientationVector; |
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Vector<double, VDimension> pointVector; |
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Vector<double, VDimension> medialAxisVector; |
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for(unsigned int i = 0; i < VDimension; i++) |
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{ |
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pointVector[i] = position[i] - m_Center[i]; |
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} |
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//take square root to normalize the orientation vector |
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medialAxisVector[0] = sqrt(m_Orientation[0]); |
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medialAxisVector[1] = sqrt(m_Orientation[1]); |
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medialAxisVector[2] = sqrt(m_Orientation[2]); |
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//if length_test is less than the length of the cylinder (half actually, because its length from the center), than |
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//the point is within the length of the cylinder along the medial axis |
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const double distanceFromCenter = dot_product( medialAxisVector.GetVnlVector(), pointVector.GetVnlVector() ); |
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if(fabs(distanceFromCenter) <= (halfAxisLength) |
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&& m_Radius >= sqrt(pow(pointVector.GetVnlVector().magnitude(),2.0) - pow(distanceFromCenter,2.0))) |
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{ |
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return 1; |
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} |
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else return 0; |
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} |
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template <unsigned int VDimension, typename TInput> |
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void FiniteCylinderSpatialFunction<VDimension, TInput> |
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::PrintSelf(std::ostream& os, Indent indent) const |
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{ |
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unsigned int i; |
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Superclass::PrintSelf(os, indent); |
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os << indent << "Lengths of Axis: " << m_AxisLength << std::endl; |
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os << indent << "Radius: " << m_Radius << std::endl; |
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os << indent << "Origin of Cylinder: " << m_Center << std::endl; |
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os << indent << "Orientation: " << std::endl; |
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for (i = 0; i < VDimension; i++) |
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{ |
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os << indent << indent << m_Orientation[i] << " "; |
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} |
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os << std::endl; |
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} |
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} // end namespace itk |
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#endif |
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