IntersectionPointUtils.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            
// 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 _INTERSECTIONPOINTUTILS_H
#define _INTERSECTIONPOINTUTILS_H


#include "SingularityType.h"


namespace Go {




enum IntPtClassification {
    DIR_UNDEF = 0,
    DIR_IN,
    DIR_OUT,
    DIR_PARALLEL,
    DIR_PERPENDICULAR,
    DIR_HIGHLY_SINGULAR,
    DIR_TOUCH
};


// @jbt: The values are modeled after the sisl routine
// sh6sislinside().

enum IntPtLocation {
    LOC_OUTSIDE_BOTH = 0,
    LOC_INSIDE_BOTH,
    LOC_EDGE_ONE,
    LOC_CORNER_ONE,
    LOC_CORNER_BOTH,
    LOC_EDGE_BOTH
};



struct CachedInterval {

    CachedInterval() : inside(0), outside(0), cached(false) {}
        
    double inside;
    double outside;
    bool cached;
};



struct IntPtInfo {

    IntPtInfo() : is_ok(false) {}

    int nneighbours;
    SingularityType singularity_type;
    IntPtClassification direction;
    IntPtLocation location;
    bool is_ok;
    
};


} // namespace Go


#endif // _INTERSECTIONPOINTUTILS_H

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