glc_distance.h

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/****************************************************************************

 This file is part of the GLC-lib library.
 Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
 Copyright (C) 2009 Pierre Soetewey
 Version 2.0.0 Beta 1, packaged on April 2010.

 http://glc-lib.sourceforge.net

 GLC-lib 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; either version 2 of the License, or
 (at your option) any later version.

 GLC-lib 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 GLC-lib; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 *****************************************************************************/

#ifndef GLC_DISTANCE_H_
#define GLC_DISTANCE_H_

#include <QList>
#include "../glc_object.h"
#include "../sceneGraph/glc_3dviewinstance.h"

#include "../glc_config.h"

class GLC_Mesh;
class PQP_Model;



class GLC_LIB_EXPORT GLC_Distance : public GLC_Object
{
        struct DistanceResult
        {
                double m_Distance;
                GLC_Point3d m_Point1;
                GLC_Point3d m_Point2;
                GLC_uint m_InstanceId1;
                GLC_uint m_InstanceId2;
        };


public:
        GLC_Distance();

        GLC_Distance(const GLC_3DViewInstance&, const GLC_3DViewInstance&);

        GLC_Distance(const GLC_Distance&);

        virtual ~GLC_Distance();



public:
        void clear();

        void addInstanceInGroup1(const GLC_3DViewInstance&);

        void addInstancesInGroup1(const QList<GLC_3DViewInstance>&);

        void addInstanceInGroup2(const GLC_3DViewInstance&);

        void addInstancesInGroup2(const QList<GLC_3DViewInstance>&);

        void computeMinimumDistance();

        inline void setRelativeError(double error)
        {m_RelativeError= error;}

        inline void setAbsoluteError(double error)
        {m_RelativeError= error;}




public:
        inline double distMin() const
        {return m_DistanceMini;}

        inline GLC_Point3d point1() const
        {return m_Point1;}

        inline GLC_Point3d point2() const
        {return m_Point2;}

        inline double relativeError() const
        {return m_RelativeError;}

        inline double absoluteError() const
        {return m_AbsoluteError;}




private:

        DistanceResult minimumDistance(QList<GLC_3DViewInstance>&, QList<GLC_3DViewInstance>&) const;

        void getPQPPoint(double&, double&, double&, const double, const double, const double, const GLC_Matrix4x4&) const;

        void addMeshTrianglesToPQP(PQP_Model*, const QList<GLC_Mesh*>, const GLC_Matrix4x4&) const;


// Private members
private:
        QList<GLC_3DViewInstance> m_ListOfInstances1;

        QList<GLC_3DViewInstance> m_ListOfInstances2;

        GLC_Point3d m_Point1;

        GLC_Point3d m_Point2;

        double m_DistanceMini;

        double m_RelativeError;

        double m_AbsoluteError;
};

#endif /* GLC_DISTANCE_H_ */