ConvergentSpline.h

Go to the documentation of this file.

/*  Copyright (C) 2003-2021 Free Electron Organization
    Any use of this software requires a license.  If a valid license
    was not distributed with this file, visit freeelectron.org. */

/** @file */

#ifndef __geometry_ConvergentSpline_h__
#define __geometry_ConvergentSpline_h__

namespace fe
{
namespace ext
{

/**************************************************************************//**
    @brief Evaluate a stack of basis splines to approach the control points

    @ingroup geometry
*//***************************************************************************/
class FE_DL_EXPORT ConvergentSpline
{
    public:
                        ConvergentSpline(void):
                            m_iterations(100),
                            m_threshold(1e-3),
                            m_count(0),
                            m_pKnots(NULL)
                        {
                            m_pControl[0]=NULL;
                            m_pControl[1]=NULL;
                            m_pControl[2]=NULL;
                        }

                        ~ConvergentSpline(void)
                        {   reset(); }

        void            setIterations(I32 a_iterations)
                        {   m_iterations=a_iterations; }
        void            setThreshold(Real a_threshold)
                        {   m_threshold=a_threshold; }

        Real            configure(I32 a_count,SpatialVector* a_pPoint,
                            SpatialVector* a_pNormal);

        SpatialVector   solve(Real a_t);

    private:

        void            reset(void)
                        {
                            m_count=0;
                            if(m_count)
                            {
                                delete m_pKnots;
                                delete m_pControl[0];
                                delete m_pControl[1];
                                delete m_pControl[2];

                                m_pKnots=NULL;
                                m_pControl[0]=NULL;
                                m_pControl[1]=NULL;
                                m_pControl[2]=NULL;
                            }
                        }

        I32     m_iterations;
        Real    m_threshold;

        I32     m_count;
        F64*    m_pKnots;
        F64*    m_pControl[3];
};


} /* namespace ext */
} /* namespace fe */

#endif /* __geometry_ConvergentSpline_h__ */