GlRegularPolygon.h

/*
 *
 * This file is part of Tulip (www.tulip-software.org)
 *
 * Authors: David Auber and the Tulip development Team
 * from LaBRI, University of Bordeaux
 *
 * Tulip 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.
 *
 * Tulip 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.
 *
 */

#ifndef GLREGULARPOLYGON_H
#define GLREGULARPOLYGON_H

#include <tulip/GlPolygon.h>
#include <tulip/Size.h>

namespace tlp {

/**
 * @ingroup OpenGL
 * @brief class to create a regular polygon
 */
class TLP_GL_SCOPE GlRegularPolygon : public GlPolygon {
public:
  /**
   * @brief Constructor
   *
   * The outline is the border of the regular polygon
   *
   * The fill is inside the regular polygon
   */
  GlRegularPolygon(const Coord &position,
                   const Size &size,
                   unsigned int numberOfSides,
                   const Color &outlineColor = Color(255, 0 , 0 , 255),
                   const Color &fillColor = Color (0, 0, 255,255),
                   bool filled = true,
                   bool outlined =true,
                   const std::string &textureName="",
                   float outlineSize=1.);
  /**
   * @brief Destructor
   */
  virtual ~GlRegularPolygon();

  /**
   * @brief Set the start angle in radian
   *
   * If the start angle is 0 : the regular polygon begin at the top middle point
   */
  void setStartAngle(float angle);

  /**
   * @brief Get the number of Sides
   */
  unsigned int getNumberOfSides();

  /**
   * @brief Set the number of sides (use setNumberOfSides)
   */
  void resizePoints(const unsigned int number);

  /**
   * @brief Set the number of sides
   */
  void setNumberOfSides(unsigned int number);

protected :

  void computePolygon();


  Coord position;
  Size size;
  unsigned int numberOfSides;
  float startAngle;

};

}
#endif