glc_geomtools.h

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

 This file is part of the GLC-lib library.
 Copyright (C) 2005-2008 Laurent Ribon (laumaya@users.sourceforge.net)
 http://glc-lib.sourceforge.net

 GLC-lib is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; either version 3 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 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser 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_GEOMTOOLS_H_
#define GLC_GEOMTOOLS_H_

#include <QVector>
#include <QList>
#include "glc_vector3d.h"
#include "glc_line3d.h"
#include "glc_plane.h"

#include "../geometry/glc_mesh.h"

#include "../glc_config.h"

namespace glc
{




        GLC_LIB_EXPORT bool polygon2DIsConvex(const QList<GLC_Point2d>& vertices);

        GLC_LIB_EXPORT bool polygonIsConvex(QList<GLuint>* pIndexList, const QList<float>& bulkList);


        GLC_LIB_EXPORT QVector<GLC_Point2d> findIntersection(const GLC_Point2d&, const GLC_Point2d&, const GLC_Point2d&, const GLC_Point2d&);

        GLC_LIB_EXPORT bool isIntersected(const GLC_Point2d&, const GLC_Point2d&, const GLC_Point2d&, const GLC_Point2d&);

        GLC_LIB_EXPORT bool isIntersectedRaySegment(const GLC_Point2d&, const GLC_Vector2d&, const GLC_Point2d&, const GLC_Point2d&);


        GLC_LIB_EXPORT QVector<double> findIntersection(const double&, const double&, const double&, const double&);

        GLC_LIB_EXPORT bool segmentInCone(const GLC_Point2d&, const GLC_Point2d&, const GLC_Point2d&, const GLC_Point2d&);

        GLC_LIB_EXPORT bool isDiagonal(const QList<GLC_Point2d>&, const int, const int);

        GLC_LIB_EXPORT void triangulate(QList<GLC_Point2d>&, QList<int>&, QList<int>&);

        GLC_LIB_EXPORT bool isCounterclockwiseOrdered(const QList<GLC_Point2d>&);


        GLC_LIB_EXPORT void triangulatePolygon(QList<GLuint>*, const QList<float>&);


        GLC_LIB_EXPORT bool lineIntersectPlane(const GLC_Line3d& line, const GLC_Plane& plane, GLC_Point3d* pPoint);

        GLC_LIB_EXPORT GLC_Point3d project(const GLC_Point3d& point, const GLC_Line3d& line);

        inline GLC_Point3d midPoint(const GLC_Point3d& point1, const GLC_Point3d point2)
        {return point1 + (point2 - point1) * 0.5;}

        inline GLC_Vector2d perpVector(const GLC_Vector2d& vect)
        {return GLC_Vector2d(-vect.getY(), vect.getX());}



};

#endif /*GLC_GEOMTOOLS_H_*/