układ

#include <SFML/Graphics.hpp>
#define W 800
#define H 600
#define OFF 10
int main()
{
    int xx[]={OFF,OFF,W-OFF,W-OFF,OFF};
    int yy[]={OFF,H-OFF,H-OFF,OFF,OFF};
    int i;
    sf::VertexArray linie(sf::Lines);
    for(i=0;i<4;i++){
        linie.append(sf::Vector2f(xx[i],yy[i]));
        linie.append(sf::Vector2f(xx[i+1],yy[i+1]));
    }
    linie.append(sf::Vector2f(OFF,H/2));
    linie.append(sf::Vector2f(W-OFF,H/2));
    linie.append(sf::Vector2f(W/2,H-OFF));
    linie.append(sf::Vector2f(W/2,OFF));
    sf::VertexArray strzalki(sf::Triangles);
    strzalki.append(sf::Vector2f(W/2-10,OFF+10));
    strzalki.append(sf::Vector2f((W/2),OFF));
    strzalki.append(sf::Vector2f((W/2)+10,OFF+10));
    strzalki.append(sf::Vector2f(W-OFF-10,(H/2)+10));
    strzalki.append(sf::Vector2f(W-OFF,H/2));
    strzalki.append(sf::Vector2f(W-OFF-10,(H/2)-10));

        // Create the main window
    sf::RenderWindow window(sf::VideoMode(W,H), "SFML window");



    // Start the game loop
    while (window.isOpen())
    {
        // Process events
        sf::Event event;
        while (window.pollEvent(event))
        {
            // Close window : exit
            if (event.type == sf::Event::Closed)
                window.close();
        }

        // Clear screen
        window.clear();

        window.draw(linie);
        window.draw(strzalki);

        // Update the window
        window.display();
    }

    return EXIT_SUCCESS;
}