closestPtSurfSurfPlane.h

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//===========================================================================
// 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          
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// as published by the Free Software Foundation version 2 of the License. 
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//===========================================================================
#ifndef _CLOSESTPTSURFSURFPLANE_H
#define _CLOSESTPTSURFSURFPLANE_H

#include "ParamSurface.h"

namespace Go {

    enum AlgorithmChoice {GEOMETRICAL, FUNCTIONAL};

void closestPtSurfSurfPlane(const std::vector<Point>& epoint,
                            const std::vector<Point>& epnt1,
                            const std::vector<Point>& epnt2,
                            const Point& epar1,
                            const Point& epar2,
                            const ParamSurface* psurf1,
                            const ParamSurface* psurf2,
                            double aepsge,
                            std::vector<Point>& gpnt1,
                            std::vector<Point>& gpnt2,
                            Point& gpar1, 
                            Point& gpar2, 
                            int& jstat,
                            AlgorithmChoice algo = FUNCTIONAL);


void closestPtSurfSurfPlaneGeometrical(const std::vector<Point>& epoint,
                                       const std::vector<Point>& epnt1,
                                       const std::vector<Point>& epnt2,
                                       const Point& epar1,
                                       const Point& epar2,
                                       const ParamSurface* psurf1,
                                       const ParamSurface* psurf2,
                                       double aepsge,
                                       std::vector<Point>& gpnt1,
                                       std::vector<Point>& gpnt2,
                                       Point& gpar1, Point& gpar2, int& jstat);

void 
closestPtSurfSurfPlaneFunctional(const std::vector<Point>& epoint, //plane description
                                 const std::vector<Point>& epnt1, // start pt. in surf. 1
                                 const std::vector<Point>& epnt2, // start pt. in surf. 2
                                 const Point& epar1, // parameter start pt. in surf. 1
                                 const Point& epar2, // parameter start pt. in surf. 2
                                 const ParamSurface* psurf1, // ptr. to surf. 1
                                 const ParamSurface* psurf2, // ptr. to surf. 2
                                 double aepsge, // absolute tolerance
                                 std::vector<Point>& gpnt1, // result of iter. in surf. 1
                                 std::vector<Point>& gpnt2, // result of iter. in surf. 2
                                 Point& gpar1, Point& gpar2, int& jstat); // results of param.


// Anonymous namespace
namespace {

void nextStep(const std::vector<Point>& fpnt,const std::vector<Point>& gpnt,
              const Point& snorm, const Point& spoint,
              Point& delta, int& kstat);

} // Anonymous namespace


} // namespace Go  

#endif //  _CLOSESTPTSURFSURFPLANE_H

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