import pyglet as pgl
from pyglet.gl import *
from pyglet.window import key, mouse
import math as m

W = 900
H = 600

win = pgl.window.Window(W, H, "Lab 1", resizable=True)
win.set_minimum_size(300, 200)

glTranslatef(W/2, H/2, 0)

b = False

@win.event
def on_draw():
    global b
    glClear(GL_COLOR_BUFFER_BIT)
    if not b:
        glColor3f(0, 255, 255)
    else:
        glColor3f(255, 0, 0)

    glBegin(GL_TRIANGLES)

    glVertex2f(0, H/4)
    glVertex2f(-W/4, -H/4)
    glVertex2f(W/4, -H/4)

    glEnd()

@win.event
def on_resize(width, height):
    glViewport(0, 0, width, height)

@win.event
def on_key_press(symbol, modifiers):
    global b
    if symbol == key.RIGHT:
        glTranslatef(66, 0, 0)
    elif symbol == key.LEFT:
        glTranslatef(-66, 0, 0)
    elif symbol == key.UP:
        glTranslatef(0, 66, 0)
    elif symbol == key.DOWN:
        glTranslatef(0, -66, 0)
    if symbol == key.SPACE:
        b = not b

@win.event
def on_mouse_press(x, y, button, modifiers):
    if button == mouse.LEFT:
        glScalef(1.1, 1.1, 0)
    if button == mouse.RIGHT:
        glScalef(0.9, 0.9, 0)

def update(dt):
    pass
pgl.clock.schedule_interval(update, 1/60)
pgl.app.run()