#!python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last modified: 2018/11/09 19:48:33
# Last updated: <2021/09/30 21:19:15 +0900>

"""
draw glut teapot on pygame

Windows10 x64 + Python 2.7.15
pygame 1.9.4 + PyOpenGL 3.1.0 + PyOpenGL-accelerate 3.1.0

not work
Windows10 x64 21H1 + Python 3.9.5 x64
pygame 2.0.1 + PyOpenGL 3.1.5 + PypenGL-accelerate 3.1.5
"""

from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
import pygame
import sys

SCRW, SCRH = 640, 480

running = True
screen = None


pygame.init()

# OPENGL向けに初期化
screen = pygame.display.set_mode((SCRW, SCRH), pygame.OPENGL | pygame.DOUBLEBUF)

if not screen:
    sys.exit()

glutInit(sys.argv)
glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH)
# glutInitWindowSize(SCRW, SCRH)

glClearColor(0.0, 0.0, 0.0, 1.0)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()

gluPerspective(45.0, float(SCRW) / float(SCRH), 0.1, 100.0)
# gluOrtho2D(0, SCRW, SCRH, 0)

glEnable(GL_DEPTH_TEST)  # enable shading

clock = pygame.time.Clock()

xrot, yrot = (0.0, 0.0)
xpos, ypos, zpos = (0.0, 0.0, -5.0)

# main loop
while running:
    # clock.tick(60)
    clock.tick_busy_loop(60)
    
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            self._running = False
        elif event.type == pygame.KEYDOWN:
            print(event.key, event.mod, event.unicode)
            if event.key == pygame.K_ESCAPE or event.key == pygame.K_q:
                running = False
        elif event.type == pygame.KEYUP:
            print(event.key, event.mod)

    spd = 0.1
    pressed_keys = pygame.key.get_pressed()
    if pressed_keys[pygame.K_UP]:
        zpos -= spd
    if pressed_keys[pygame.K_DOWN]:
        zpos += spd
    if pressed_keys[pygame.K_LEFT]:
        xpos -= spd
    if pressed_keys[pygame.K_RIGHT]:
        xpos += spd

    xrot += 0.25
    yrot += 1.0

    # draw object

    # Clear OpenGL Buffer
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)

    glMatrixMode(GL_MODELVIEW)
    glLoadIdentity()

    # set camera
    gluLookAt(0.0, 1.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0)

    glTranslatef(xpos, ypos, zpos)
    glRotatef(xrot, 1.0, 0.0, 0.0)
    glRotatef(yrot, 0.0, 1.0, 0.0)
    glScale(1.0, 1.0, 1.0)

    # draw teapot
    glColor3f(1.0, 0.0, 0.0)  # color red
    glutWireTeapot(1.0)   # wireframe
    # glutSolidTeapot(1.0)  # solid

    # OpenGL drawing
    glFlush()

    # flip pygame double buffer
    pygame.display.flip()

    cap = '%5.2f FPS' % (clock.get_fps())
    pygame.display.set_caption(cap)

pygame.quit()