from pyglet.gl import *

window = pyglet.window.Window()

@window.event
def on_draw():
    glClear(GL_COLOR_BUFFER_BIT)

    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    glMatrixMode(GL_MODELVIEW)

    glLoadIdentity()
    glColor3f(1,0,0)
    glBegin(GL_TRIANGLES)
    glVertex2f(0.0, 0.0)
    glVertex2f(0.2, 0.0)
    glVertex2f(0.4, 0.4)
    glEnd()
    glColor3f(0,1,0)
    glTranslatef(0.4,0.4,0)
    glRotatef(45, 0, 0, 1)
    glTranslatef(-0.4,-0.4,0)
    glBegin(GL_TRIANGLES)
    glVertex2f(0.0, 0.0)
    glVertex2f(0.2, 0.0)
    glVertex2f(0.4, 0.4)
    glEnd()


pyglet.app.run()