ColConvexHull.h

//***************************************************************************
//                              ColConvexHull
//***************************************************************************
//  Copyright (C):
//***************************************************************************
//CVSId: "@(#)$Id: ColConvexHull.h,v 1.3 2004/02/26 14:50:15 ehlgen Exp $"
//***************************************************************************


#ifndef ColConvexHull_H
#define ColConvexHull_H
#if defined(__sgi) || defined(_WIN32)
#pragma once
#endif

//---------------------------------------------------------------------------
//  Includes
//---------------------------------------------------------------------------

#include <OpenSG/OSGGeometry.h>
#include <OpenSG/OSGVector.h>

#include <ColTopology.h>
#include <ColVisDebug.h>

#include <col_import_export.h>


namespace col {


//---------------------------------------------------------------------------
//  Forward References
//---------------------------------------------------------------------------

struct SepPlane;

//---------------------------------------------------------------------------
//   Constants
//---------------------------------------------------------------------------

const float M_InitEta = 0.1;
const float M_MaxSteps = 150;
const float M_AnnealingFactor = 0.97;


//***************************************************************************
//  ColConvexHull
//***************************************************************************


class COL_EXPORTIMPORT ConvexHull
{


//---------------------------------------------------------------------------
//  Public Instance methods
//---------------------------------------------------------------------------

public:

    ConvexHull( );
    explicit ConvexHull( const ConvexHull & source );
    void operator = ( const ConvexHull & source );

    ConvexHull( const osg::GeometryPtr geom );
    void operator = ( const osg::GeometryPtr geom );

    bool check( const ConvexHull &other, const osg::Matrix m12,
                SepPlane *plane, VisDebug *visdebug = NULL ) const;

    osg::NodePtr getGeomNode( void );
    void print( void );

    virtual ~ConvexHull() throw();

//---------------------------------------------------------------------------
//  Instance variables
//---------------------------------------------------------------------------

protected:

    vector<osg::Pnt3f> m_vertex;

    vector<TopoFace> m_face;

    osg::GeometryPtr m_org_geom;        // TODO GeometryConstPtr, wenn OSG soweit

    osg::NodePtr m_hull_node;

    Topology m_topo;

//---------------------------------------------------------------------------
//  Class variables
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
//  Private Instance methods
//---------------------------------------------------------------------------

protected:

    void createHull( void );

};



//***************************************************************************
//  SepPlane
//***************************************************************************


struct COL_EXPORTIMPORT SepPlane
{
    SepPlane();

    osg::Vec4f      m_w;
    unsigned int    m_closest_p1, m_closest_p2;

};



} // namespace col

#endif /* ConvexHull_H */

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