cone + cylindre

void Viewer::init_cylindre()
{
    m_cylindre = Mesh(GL_TRIANGLE_STRIP);
    m_cylindre.color(1, 1, 1);
    int div = 25;
    float rota = M_PI * 2 / div;
    for (int i = 0; i <= div; i++)
    {
        float alpha = rota * i;
        m_cylindre.normal(Vector(cos(alpha), 0, sin(alpha)));
        m_cylindre.vertex(Point(cos(alpha), 0, sin(alpha)));
        m_cylindre.normal(Vector(cos(alpha), 0, sin(alpha)));
        m_cylindre.vertex(Point(cos(alpha), 2, sin(alpha)));
    }
}

void Viewer::init_couvercle()
{
    m_couvercle = Mesh(GL_TRIANGLE_FAN);
    m_couvercle.color(1, 1, 1);
    int div = 25;
    float rota = M_PI * 2 / div;
    m_couvercle.vertex(Point(0, 0, 0));
    m_couvercle.normal(Vector(0, 1, 0));
    for (int i = 0; i <= div; i++)
    {
        float alpha = rota * i;
        m_couvercle.vertex(Point(cos(alpha), 0, sin(alpha)));
    }
}

void Viewer::init_cone()
{
    m_cone = Mesh(GL_TRIANGLE_FAN);
    m_cone.color(1, 1, 1);
    int div = 25;
    float rota = M_PI * 2 / div;
    m_cone.vertex(Point(0, 1, 0));
    m_cone.normal(Vector(0, 1, 0));
    for (int i = 0; i <= div; i++)
    {
        const float alpha = rota * i;
        m_cone.vertex(Point(cos(alpha), 0, sin(alpha)));
    }
}

int Viewer::render()
{
    /* ... */

    //Cylindre
    gl.model(Translation(0, 0, 0));
    gl.draw(m_cylindre);

    gl.model(-1 * Translation(0, 2, 0)); // Face Haut
    gl.draw(m_couvercle);
    gl.model(Translation(0, 0, 0)); // Face Bas
    gl.draw(m_couvercle);


    // Cone -- J'ai mis en coordonnées de base 2,0,0 pour qu'il soit à coté du cylindre
    gl.model(-1*Translation(2, 0, 0));
    gl.draw(m_cone);
    gl.model(Translation(-2, 0, 0)); // Face Bas, -2 ici car on fait -1* translation pour le m_cone
    gl.draw(m_couvercle);

    return 1;
}