IvfSpline3d.h

//
// Copyright 1999-2006 by Structural Mechanics, Lund University.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "ivf@byggmek.lth.se".
//
//
// Written by Jonas Lindemann
//

#ifndef _CIvfSpline3d_h_
#define _CIvfSpline3d_h_

#include <ivf/ivfconfig.h>

#include <ivfmath/IvfMathBase.h>
#include <ivfmath/IvfSplineSegment3d.h>

IvfSmartPointer(CIvfSpline3d);

class IVFMATH_API CIvfSpline3d : public CIvfMathBase {
private:
        int m_size;
        std::vector<CIvfSplineSegment3d*> m_segments;   
        std::vector<CIvfVec3d*> m_points;

        std::vector<double> m_tau;    // Slack/tightening
        std::vector<double> m_gamma;  // Continuity
        std::vector<double> m_beta;   // Bias

        CIvfVec3d* m_start;
        CIvfVec3d* m_end;

        void initSpline();
        void updateSpline();
public:
        CIvfSpline3d();

        virtual ~CIvfSpline3d();

        IvfClassInfo("CIvfSpline3d",CIvfMathBase);

        void clear();

        int getSize();

        void setSize(int size);
        
        CIvfVec3d* getPoint(int idx);
        
        CIvfVec3d& getPosition(double t);

        void update();

        void setTangentWeight(int idx, double value);

        void setContinuity(int idx, double value);
        
        void setTension(int idx, double value);

        double getSpeed(double t);

        CIvfVec3d& getTangent(double t);
};

#endif 

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