поворот фигуры в OpenGL?

void TForm1::Draw()
{
  glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);

  glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);

//поле
  glBegin(GL_QUADS);
    glColor3f(1,1,0);
    glVertex3f(-212,0,-212);
    glColor3f(1,1,1);
    glVertex3f(212,0,-212);
    glColor3f(0,1,1);
    glVertex3f(212,0,212);
    glColor3f(1,0,1);
    glVertex3f(-212,0,212);
  glEnd();
//фигура
  glBegin(GL_QUAD_STRIP);
    glColor3f(1,0,0);
    glVertex3f(x,5,z);
    glVertex3f(x,15, z);
    glColor3f(0,0,1);
    glVertex3f(x2, 5,z2);
    glVertex3f(x2, 15,z2);

    glColor3f(0,1,0);
    glVertex3f( x3, 5,z3);
    glVertex3f( x3, 15, z3);

    glColor3f(1,0,0);
    glVertex3f(x,5,z);
    glVertex3f(x,15,z);
  glEnd();

  glBegin(GL_TRIANGLES);
    glColor3f(1,0,0);
    glVertex3f(x,5,z);
    glColor3f(0,0,1);
    glVertex3f(x2, 5,z2);
    glColor3f(0,1,0);
    glVertex3f( x3, 5,z3);

    glColor3f(1,0,0);
    glVertex3f(x,15,z);
    glColor3f(0,0,1);
    glVertex3f(x2, 15,z2);
    glColor3f(0,1,0);
    glVertex3f(x3, 15,z3);
  glEnd();
//фигура создана
  //glRotatef(3, 0,1,0);
  ////
  SwapBuffers(ghDC);

}