GlLine.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.
 *
 */
///@cond DOXYGEN_HIDDEN


#ifndef GLLINE_H
#define GLLINE_H

#ifndef DOXYGEN_NOTFOR_DEVEL

#include <tulip/Color.h>
#include <tulip/Coord.h>
#include <tulip/tulipconf.h>
#include <tulip/GlSimpleEntity.h>

namespace tlp {

/**
 * @ingroup OpenGL
 * \brief This is a general class to render an OpenGL laine
 * This class is use to render an OpenGl line
 */
class TLP_GL_SCOPE GlLine : public GlSimpleEntity {
public:
  /**
   * Enpty constructor
   */
  GlLine():width(1.0),factor(1),pattern(0) {}
  /**
   * Constructor with a list of coord and a list of color
   */
  GlLine(const std::vector<Coord> &points,
         const std::vector<Color> &colors);

  virtual ~GlLine();

  /**
   * Render the line
   */
  void draw(float lod,Camera *camera);

  /**
   * Change number of points
   */
  virtual void resizePoints(const unsigned int nbPoints);
  /**
   * Change number of colors
   */
  virtual void resizeColors(const unsigned int nbColors);

  virtual const Coord& point(const unsigned int i) const;
  /**
   * Return the coord of point with given id
   */
  virtual Coord& point(const unsigned int i);
  /**
   * Add a new point with given coord and given color
   */
  virtual void addPoint(const Coord& point, const Color& color);

  /**
   * return the ith color used for draw the line
   */
  virtual const Color& color(const unsigned int i) const;
  /**
   * return the ith color used for draw the line
   */
  virtual Color& color(const unsigned int i);
  /**
   * Set line width
   */
  virtual void setLineWidth(float width);
  /**
   * Set the style of the line (documentation can be found in OpenGL manuel of fuction glLineStipple)
   */
  virtual void setLineStipple(unsigned char factor,unsigned int pattern);

  /**
   * Translate entity
   */
  virtual void translate(const Coord& vec);

  /**
   * Function to export data in outString (in XML format)
   */
  virtual void getXML(std::string &outString);

  /**
   * Function to set data with inString (in XML format)
   */
  virtual void setWithXML(const std::string &inString, unsigned int &currentPosition);

protected:
  std::vector<Coord> _points;
  std::vector<Color> _colors;
  float width;
  unsigned char factor;
  unsigned int pattern;
};

}

#endif // DOXYGEN_NOTFOR_DEVEL

#endif
///@endcond