ProjectIntersectionCurve.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 _GOPROJECTCURVE_
#define _GOPROJECTCURVE_

#include <boost/smart_ptr.hpp>

#include "Point.h"
#include "EvalCurve.h"
#include "SplineCurve.h"
#include "SplineSurface.h"

namespace Go 

{


class ProjectIntersectionCurve : public EvalCurve
{
public:

    ProjectIntersectionCurve(boost::shared_ptr<SplineCurve>& inters_crv,
                             boost::shared_ptr<SplineCurve>& p_crv,
                             boost::shared_ptr<SplineCurve>& other_p_crv,
                             boost::shared_ptr<ParamSurface>& surf,
                             boost::shared_ptr<ParamSurface>& other_surf,
                             double offset_dist, double other_offset_dist,
                             double epsgeo);

    virtual ~ProjectIntersectionCurve();

    virtual Point eval(double t) const;

    virtual void eval(double t, int n, Point der[]) const;

    virtual double start() const;
    virtual double end() const;

    virtual int dim() const;

    virtual bool approximationOK(double par, Point approxpos,
                                 double tol1, double tol2) const; 

private:
    const boost::shared_ptr<SplineCurve> inters_crv_;
    //Param curves serve as seed generators for closest point evaluations.
    const boost::shared_ptr<SplineCurve> p_crv_;
    const boost::shared_ptr<SplineCurve> other_p_crv_;
    const boost::shared_ptr<ParamSurface> surf_;
    const boost::shared_ptr<ParamSurface> other_surf_;
    const double offset_dist_; // In direction normal to surf_.
    const double other_offset_dist_; // In direction normal to other_surf_.
    const double epsgeo_;

    std::vector<double>
    getSuggestedSurfaceParameter(const SplineCurve& space_cv, double t,
                                 const SplineCurve& param_cv,
                                 bool pcv_turned) const;

};

} // namespace Go

#endif //_GOPROJECTCURVE_

---