vpTriangle.h

/****************************************************************************
 *
 * $Id: vpTriangle.h 4056 2013-01-05 13:04:42Z fspindle $
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2013 by INRIA. All rights reserved.
 * 
 * This software is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * ("GPL") version 2 as published by the Free Software Foundation.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact INRIA about acquiring a ViSP Professional 
 * Edition License.
 *
 * See http://www.irisa.fr/lagadic/visp/visp.html for more information.
 * 
 * This software was developed at:
 * INRIA Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 * http://www.irisa.fr/lagadic
 *
 * If you have questions regarding the use of this file, please contact
 * INRIA at visp@inria.fr
 * 
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *
 * Description:
 * Defines a 2D triangle.
 *
 * Author:
 * Amaury Dame
 * Nicolas Melchior
 *
 *****************************************************************************/

#ifndef vpTriangle_h
#define vpTriangle_h

#include <visp/vpImagePoint.h>
#include <visp/vpMatrix.h>

class VISP_EXPORT vpTriangle
{
  private:
    bool goodTriange;
    vpImagePoint S1;
    double uvinv00;
    double uvinv01;
    double uvinv10;
    double uvinv11;
    double ptempo0;
    double ptempo1;
    double area;
    vpImagePoint apex1;
    vpImagePoint apex2;
    vpImagePoint apex3;
    
  public:
    vpTriangle();
    vpTriangle(const vpTriangle &tri);
    virtual ~vpTriangle();
    
    vpTriangle &operator=(const vpTriangle& tri);
    
    vpTriangle(const vpImagePoint &iP1, const vpImagePoint &iP2, const vpImagePoint &iP3);
    
    void buildFrom(const vpImagePoint &iP1, const vpImagePoint &iP2, const vpImagePoint &iP3);
    
    bool inTriangle(const vpImagePoint &iP, double threshold = 0.00001);
    
    void getTriangleApexes(vpImagePoint &iP1, vpImagePoint &iP2, vpImagePoint &iP3) const {
      iP1 = apex1;
      iP2 = apex2;
      iP3 = apex3;}
      
      
    inline double getArea() const{
      return this->area;
    }

  private:
    void init(const vpImagePoint &iP1, const vpImagePoint &iP2, const vpImagePoint &iP3);
    
};

#endif