/**
 *
 * This file is part of Tulip (www.tulip-software.org)
 *
 * Authors: David Auber and the Tulip development Team
 * from LaBRI, University of Bordeaux 1 and Inria Bordeaux - Sud Ouest
 *
 * 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 Tulip_GLCURVE_H
#define Tulip_GLCURVE_H

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

#include <tulip/GlSimpleEntity.h>

namespace tlp {
  /** \brief This class is use to display an OpenGl curve
   *
   */
  class TLP_GL_SCOPE GlCurve : public GlSimpleEntity {
  public:
    /**
     * Basic constructor with vector of coord, begin/end color and begin/end size
     */
    GlCurve(const std::vector<tlp::Coord> &points,
	    const Color &beginFColor,
	    const Color &endFColor,
	    const float &beginSize=0.,
	    const float &endSize=0.);

    /**
     * Basic constructor with number of points
     */
    GlCurve(const unsigned int nbPoints = 3u);
    virtual ~GlCurve();

    /**
     * Draw the curve
     */
    void draw(float lod,Camera *camera);

    /**
     * Set the texture of the curve (if you want texture)
     */
    void setTexture(const std::string &texture);

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

    /**
     * Return the ith coord
     */
    virtual const tlp::Coord& point(const unsigned int i) const;
    /**
     * Return the ith coord
     */
    virtual tlp::Coord& point(const unsigned int i);

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

    /**
     * Function to export data in XML
     */
    virtual void getXML(xmlNodePtr rootNode);

    /**
     * Function to set data with XML
     */
    virtual void setWithXML(xmlNodePtr rootNode);

  protected:
    std::vector<tlp::Coord> _points;
    Color _beginFillColor;
    Color _endFillColor;
    float _beginSize;
    float _endSize;
    std::string texture;
  };
}
#endif
