source: orxonox.OLD/trunk/src/world_entities/elements/glgui_radar.h

/*!
 * @file glgui_radar.h
 * @brief Definition of an Radar, that displays a bar and a Text
*/

#ifndef _GLGUI_RADAR_H
#define _GLGUI_RADAR_H

#include "glgui_widget.h"

class PNode;
class WorldEntity;

namespace OrxGui
{

  //! A class for ...
  class GLGuiRadar : public GLGuiWidget
  {
  public:
    typedef enum {
      Linear,
      Exponential,
    } Attenuation;

  public:
    GLGuiRadar();
    virtual ~GLGuiRadar();

    void addEntityList(const std::list<WorldEntity*>* entityList, const Color& color);
    void removeEntityList(const std::list<WorldEntity*>* entityList);

    void setRange(float range);

    void setCenterNode(const PNode* center);
    void setUpdateInterval(float updateInterval) { this->_updateInterval = updateInterval; };
    void setAttenuation(Attenuation attenuation);


    float range() const { return this->_range; }

    void updateRadar();

    virtual void tick(float dt);
    void draw() const;

  protected:
    virtual void resize();
    virtual void showing();
    virtual void hiding();

  private:
    void init();

  private:
    typedef struct
    {
      Color                           dotColor;
      const std::list<WorldEntity*>*  entityList;
      std::vector<Vector2D>           positions;
    }
    DotList;

    const PNode*                      _centerNode;
    std::vector<DotList>              _dotLists;

    Attenuation                       _attenuation;
    float                             _range;


    float                             _updateInterval;
    float                             _timePassed;
  };
}
#endif /* _GLGUI_RADAR_H */