import sys, time, math, Image
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
import os

startDir = os.getcwd() + os.sep

startTime = time.time()


def draw():
    glClearColor(0.5, 0.7, 1, 0)
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
    
    glEnable(GL_TEXTURE_2D)

    drawFloor()

    glBindTexture(GL_TEXTURE_2D, texture1)
    glTranslatef(0, 7*abs(math.sin(time.time())), -5)
    glutSolidTeapot(2.0)


texture1 = 0
texture2 = 0
angle = 0

def drawFloor():
    glMatrixMode(GL_TEXTURE)
    glPushMatrix()
    glLoadIdentity()
    glRotatef(angle, 0, 0, 1)
    glMatrixMode(GL_MODELVIEW)

    glEnable(GL_TEXTURE_2D)
    glBindTexture(GL_TEXTURE_2D, texture2)
    glColor4f(1,1,1,1)
    glBegin(GL_QUADS)
    glTexCoord2f(-1,-1)
    glVertex3f(-10, 0, -10)
    glTexCoord2f(1,-1)
    glVertex3f(10, 0, -10)
    glTexCoord2f(1,1)
    glVertex3f(10, 0, 10)
    glTexCoord2f(-1,1)
    glVertex3f(-10, 0, 10)
    glEnd()

    glMatrixMode(GL_TEXTURE)
    glPopMatrix()
    glMatrixMode(GL_MODELVIEW)


def initTexture(filename):
    img = Image.open(startDir + filename)
    img = img.transpose(Image.FLIP_TOP_BOTTOM)
    img = img.convert('RGB')
    textureID = glGenTextures(1)
    glBindTexture(GL_TEXTURE_2D, textureID)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img.size[0], img.size[1],
                 0, GL_RGB, GL_UNSIGNED_BYTE, img.tostring())
    glBindTexture(GL_TEXTURE_2D, 0)
    return textureID



def update():
    global angle, startTime
    angle = (time.time()-startTime)*10

texture1 = initTexture("clouds.jpg")
texture2 = initTexture("panda.jpg")