text: #ifndef SIMULATIONDISPLAYWIDGET_H
  #define SIMULATIONDISPLAYWIDGET_H
  
  #include <QWidget>
  #include "../Models/simulation.h"
  
  class SimulationDisplayWidget : public QWidget
  {
      Q_OBJECT
  public:
      explicit SimulationDisplayWidget(QWidget *parent = 0);
  
      void setSimulation(Simulation* simulation);
  
  protected:
      virtual void paintEvent(QPaintEvent *);
  
  private:
      Simulation* simulation = nullptr;
  
  };
  
  #endif // SIMULATIONDISPLAYWIDGET_H
  