GoIntersections.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          
// 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 _GOINTERSECTIONS_H
#define _GOINTERSECTIONS_H


#include "SplineCurve.h"
#include <utility>

namespace Go
{


enum {  pretop_UNDEF,
        pretop_IN,  
        pretop_OUT, 
        pretop_ON,  
        pretop_AT };


void intersect2Dcurves(const ParamCurve* cv1, 
                       const ParamCurve* cv2, 
                       double epsge,
                       std::vector<std::pair<double,double> >& intersections,
                       std::vector<int>& pretopology);

void intersectcurves(SplineCurve* cv1, SplineCurve* cv2, double epsge,
                     std::vector<std::pair<double,double> >& intersections);

void closestPtCurves(SplineCurve* cv1, SplineCurve* cv2, double epsge,
                     double& par1, double& par2, double& dist);

} // namespace Go


#endif // _GOINTERSECTIONS_H

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