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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkNonUniformBSpline.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:42 $ |
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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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#if defined(_MSC_VER) |
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#pragma warning ( disable : 4786 ) |
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#endif |
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#ifndef __itkNonUniformBSpline_h |
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#define __itkNonUniformBSpline_h |
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#include <vector> |
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#include "itkPoint.h" |
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#include "itkObject.h" |
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#include "itkArray.h" |
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namespace itk { |
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/** |
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* \class NonUniformBSpline |
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* \brief BSpline with nonuniform knot spacing. |
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* |
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* This class is a bspline with nonuniform knot spacing. The |
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* use can specify a set of points and a set of knots and the |
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* spline will attempt to find the control points which will |
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* cause the spline to interpolate the points. |
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* |
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* CAUTION: THIS CLASS IS STILL UNDER DEVELOPMENT. |
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* |
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*/ |
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template < unsigned int TDimension = 3 > |
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class NonUniformBSpline |
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**: public Object |
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{ |
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*public: |
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/** |
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Typedefs |
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***/ |
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typedef NonUniformBSpline Self; |
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typedef Object Superclass; |
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typedef SmartPointer < Self > Pointer; |
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typedef SmartPointer < const Self > ConstPointer; |
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typedef double ScalarType; |
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typedef itk::Point< ScalarType, TDimension > PointType; |
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typedef std::vector < PointType > PointListType; |
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typedef PointListType * PointListPointer; |
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typedef std::vector < double > KnotListType; |
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typedef std::vector<double> CoordinateListType; |
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typedef itk::Point<double, TDimension > ControlPointType; |
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typedef std::vector< ControlPointType > ControlPointListType; |
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typedef ControlPointListType * ControlPointListPointer; |
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typedef std::vector<double> ChordLengthListType; |
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/** Method for creation through the object factory. */ |
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itkNewMacro( Self ); |
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/** Method for creation through the object factory. */ |
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itkTypeMacro( NonUniformBSpline, Object ); |
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/** |
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Set points which the spline will attempt to interpolate. |
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***/ |
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void SetPoints( PointListType & newPoints ); |
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/** |
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Get the points the spline is trying to interpolate. |
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***/ |
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PointListType& GetPoints() |
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{ |
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return m_Points; |
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} |
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/** |
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Set the knot vector. Knots may be nonuniformly spaced. |
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Knots will be rescaled to be between 0 and 1. |
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***/ |
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void SetKnots( KnotListType & newKnots); |
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/** |
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Get the knot vector. |
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***/ |
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KnotListType& GetKnots(); |
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/** |
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Computes the chord lengths based on the points. |
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***/ |
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void ComputeChordLengths(); |
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/** |
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Methods for evaluating the spline. |
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The parameterization is always between 0 and 1. |
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***/ |
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PointType EvaluateSpline(const Array<double> & p) const; |
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PointType EvaluateSpline( double t ) const; |
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/** |
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Compute the control points. |
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***/ |
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void ComputeControlPoints(); |
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/** |
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Set the control points for the spline. |
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***/ |
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void SetControlPoints( ControlPointListType& ctrlpts ); |
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/** |
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Get the control points for the spline |
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***/ |
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ControlPointListType& GetControlPoints() |
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{ |
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return m_ControlPoints; |
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} |
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/** |
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Evaluate the basis functions directly. |
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order - order of the basis function, i.e. 3 = cubic. |
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i - basis function number, zero based. |
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t - parameter of the spline. |
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***/ |
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double NonUniformBSplineFunctionRecursive(unsigned int order, unsigned int i, double t) const; |
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/** |
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Set the order of the spline. |
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***/ |
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void SetSplineOrder(unsigned int order) |
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{ |
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m_SplineOrder = order; |
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this->Modified(); |
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} |
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/** |
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Get the order of the spline. |
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***/ |
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unsigned int GetSplineOrder() |
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{ |
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return m_SplineOrder; |
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} |
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*protected: |
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/** |
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Constructor |
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***/ |
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NonUniformBSpline(); |
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/** |
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Virtual destructor |
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***/ |
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virtual ~NonUniformBSpline(); |
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/** |
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****Method to print the object. |
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***/ |
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virtual void PrintSelf( std::ostream& os, Indent indent ) const; |
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/** |
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Points that the spline attempts to intepolate. |
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***/ |
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PointListType m_Points; |
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/** |
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The knots of spline. |
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***/ |
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KnotListType m_Knots; |
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/** |
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The control points of the spline. |
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***/ |
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ControlPointListType m_ControlPoints; |
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/** |
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The chord length computed from m_Points. |
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***/ |
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ChordLengthListType m_ChordLength; |
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/** |
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The cumulative chord length computed from m_Points |
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***/ |
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ChordLengthListType m_CumulativeChordLength; |
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/** |
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The order of the spline. |
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***/ |
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unsigned int m_SplineOrder; |
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/** |
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The spatial dimension. Saved from the template parameter. |
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***/ |
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unsigned int m_SpatialDimension; |
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}; |
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} // end namespace itk |
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#ifndef ITK_MANUAL_INSTANTIATION |
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#include "itkNonUniformBSpline.txx" |
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#endif |
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#endif // __itkNonUniformBSpline_h |
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