SfCvIntersector.h

//===========================================================================
// GoTools - SINTEF Geometry Tools
//
// GoTools module: Intersections, version 1.0
//
// 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            
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//
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// SINTEF ICT, Department of Applied Mathematics,                         
// P.O. Box 124 Blindern,                                                 
// 0314 Oslo, Norway.                                                     
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//===========================================================================
#ifndef _SFCVINTERSECTOR_H
#define _SFCVINTERSECTOR_H


#include "Intersector2Obj.h"


namespace Go {




class SfCvIntersector : public Intersector2Obj {
public:

    SfCvIntersector(boost::shared_ptr<ParamGeomInt> obj1, 
                    boost::shared_ptr<ParamGeomInt> obj2,
                    double epsge,
                    Intersector* prev = 0,
                    int eliminated_parameter = -1,
                    double eliminated_value = 0);

    SfCvIntersector(boost::shared_ptr<ParamGeomInt> obj1, 
                    boost::shared_ptr<ParamGeomInt> obj2,
                    boost::shared_ptr<GeoTol> epsge,
                    Intersector* prev = 0,
                    int eliminated_parameter = -1,
                    double eliminated_value = 0);

    virtual ~SfCvIntersector();

//     // Validation of given intersection results
//     virtual void validate(int level, ValidationStat status);

    virtual int numParams() const
    { return 3; }

    void postIterateBd();

protected:
    // Data members

    virtual boost::shared_ptr<Intersector> 
    lowerOrderIntersector(boost::shared_ptr<ParamGeomInt> obj1,
                          boost::shared_ptr<ParamGeomInt> obj2, 
                          Intersector* prev = 0,
                          int eliminated_parameter = -1,
                          double eliminated_value = 0);

    virtual int performRotatedBoxTest(double eps1, double eps2);

    virtual bool foundIntersectionNearBoundary();

    virtual int simpleCase();

    virtual int simpleCase2(Point& axis1, Point& axis2);

    virtual int checkCoincidence();

    virtual void microCase();
  
    virtual int updateIntersections();

    virtual int repairIntersections()
    { return 0; }

    virtual int linearCase();

    virtual int doSubdivide();

    virtual void postIterate(int nmb_orig, int dir=-1, bool keep_endpt=true);

private:

    int cv_idx_, sf_idx_;  // Indices to the curve object and the
                           // surface object, respectivily

    void doIterate(double par[], double& dist, double *guess=0);

   void doIterate2(double par[], double& dist, double guess[]);

    double distInCandidatePar(double par, int dir, const double* seed);

    int sortParameterDirections(int perm[]);

    SubdivisionClassification getSubdivisionParameter(int dir, double& par);

};


} // namespace Go


#endif  // _CVCVINTERSECTOR_H

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