ParamCurve.h

//===========================================================================
// GoTools - SINTEF Geometry Tools version 1.1
//
// GoTools module: CORE
//
// Copyright (C) 2000-2007 SINTEF ICT, Applied Mathematics, Norway.
//
// This program is free software; you can redistribute it and/or          
// modify it under the terms of the GNU General Public License            
// as published by the Free Software Foundation version 2 of the License. 
//
// This program 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 General Public License for more details.                           
//
// You should have received a copy of the GNU General Public License      
// along with this program; if not, write to the Free Software            
// Foundation, Inc.,                                                      
// 59 Temple Place - Suite 330,                                           
// Boston, MA  02111-1307, USA.                                           
//
// Contact information: E-mail: tor.dokken@sintef.no                      
// SINTEF ICT, Department of Applied Mathematics,                         
// P.O. Box 124 Blindern,                                                 
// 0314 Oslo, Norway.                                                     
//
// Other licenses are also available for this software, notably licenses
// for:
// - Building commercial software.                                        
// - Building software whose source code you wish to keep private.        
//===========================================================================
#ifndef _GOPARAMCURVE_H
#define _GOPARAMCURVE_H

#include "Point.h"
#include "GeomObject.h"
#include "CompositeBox.h"
#include "DirectionCone.h"
#include "Values.h"
#include <vector>
#include <boost/smart_ptr.hpp>


namespace Go
{


class SplineCurve;

class ParamCurve : public GeomObject
{
public:
    virtual ~ParamCurve();

    virtual void point(Point& pt, double tpar) const = 0;

    virtual void point(std::vector<Point>& pts, 
                       double tpar,
                       int derivs,
                       bool from_right = true) const = 0;


    Point point(double tpar) const;

    std::vector<Point> point(double tpar, int derivs, bool from_right = true) const;

    virtual double startparam() const = 0;

    virtual double endparam() const = 0;

    virtual void reverseParameterDirection(bool switchparam = false) = 0;
    
    virtual SplineCurve* geometryCurve() = 0;

    virtual bool isDegenerate(double degenerate_epsilon) = 0;

    virtual ParamCurve* subCurve(double from_par, double to_par,
                                 double fuzzy = DEFAULT_PARAMETER_EPSILON) const = 0;

// #ifdef _MSC_VER
// #if _MSC_VER < 1300
//     virtual GeomObject* clone() const = 0;
// #else
//     virtual ParamCurve* clone() const = 0;
// #endif //_MSC_VER < 1300
// #else
    virtual ParamCurve* clone() const = 0;
// #endif

    virtual DirectionCone directionCone() const = 0;
 
    virtual CompositeBox compositeBox() const;

    virtual void appendCurve(ParamCurve* cv, bool reparam=true) = 0;

    virtual void appendCurve(ParamCurve* cv,
                             int continuity, double& dist, bool reparam=true) = 0;

    double estimatedCurveLength(int numpts = 4) const;

    double estimatedCurveLength(double tmin, double tmax, int numpts = 4) const;

    virtual void closestPoint(const Point& pt,
                              double tmin,
                              double tmax,
                              double& clo_t,
                              Point& clo_pt,
                              double& clo_dist,
                              double const *seed = 0) const = 0;

    void closestPoint(const Point& pt, double& clo_t, Point& clo_pt, double& clo_dist) const;

    virtual double nextSegmentVal(double par, bool forward, double tol) const;

protected:
    void closestPointGeneric(const Point&   pt,
                             double    tmin,
                             double    tmax,
                             double guess_param,
                             double&   clo_t,
                             Point&  clo_pt,
                             double&   clo_dist) const;

    void s1771(Point pt,double aepsge,
               double astart,double aend,double anext,double &cpos,int *jstat) const;

    void s1771_s9point(Point pt, std::vector<Point> val, Point diff,
                          double astart,double aend,int max_it,double *cnext,double *ad,
                       double adel,double *cdist,double aprev,int *jstat) const;

    double s1771_s9del(double *eco,double *eco1,double *eco2,int idim) const;
};

} // namespace Go



#endif // _GOPARAMCURVE_H

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