fig = plt.figure()
            ax = fig.gca(projection='3d')
            surf = ax.plot_surface(X, Y, Z)
            plt.show()
        
        elif event.type == KEYDOWN and event.key == K_DOWN:
            l = [pop.contenu[i].fitness for i in range(pop.length)]
            l2 = [pop.contenu[i].sharedFitness for i in range(pop.length)]
            plt.plot(range(pop.length), l)
            plt.plot(range(pop.length), l2)
            plt.show()
                 
        elif event.type == KEYDOWN and event.key == K_e:
            evol = not(evol)
            
        elif event.type == VIDEORESIZE:
            pygame.display.set_mode((event.w, event.h), DOUBLEBUF and RESIZABLE)

        
    if evol:
        pop.evoluer()
        if (pop.generationCount % 10 == 0):
            pop.updateBest()
            
    
    pop.draw(status.police)
    status.draw()
    pygame.display.flip()