text: #ifndef __THICK_HIGHLIGHT_EDGE_HPP__
  #define __THICK_HIGHLIGHT_EDGE_HPP__
  
  #include "Effect.hpp"
  #include <SDL2/SDL.h>
  #include <cv.h>
  
  /** Effect that puts highlight lines on the edge of detected objects.
   */
  class ThickHighlightEdge : public Effect {
  public:
    ThickHighlightEdge(SDL_Renderer *const renderer_, SDL_Window *const win_);
  
    void render(cv::Mat &frame) override;
  
  private:
    SDL_Window *win;
    cv::Mat handMask;
    cv::Mat backMask;
    cv::Mat output;
    cv::Mat edges;
  
    unsigned int positionBufferId;
    unsigned int colorBufferId;
  };
  
  #endif
  