import sys, time, math
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
from random import *
from dmsgl import *

groundtex = Texture2D("cobblestones.jpg")

startTime = time.time()

def drawWorld():
# draw ground
    groundtex.apply()
    glBegin(GL_QUADS)
    glNormal3f(0, 1, 0)
    glTexCoord2f(0,0)
    glVertex3f(-10, -5, 10)
    glTexCoord2f(1,0)
    glVertex3f(10, -5, 10)
    glTexCoord2f(1,1)
    glVertex3f(10, -5, -10)
    glTexCoord2f(0,1)
    glVertex3f(-10, -5, -10)
    glEnd()
    groundtex.disable()
# draw near cone
    glPushMatrix()
    glTranslatef(0, -4, 0)
    glRotatef(-90, 1, 0, 0)
    glutWireCone(1.0, 8.0, 8, 2)
    glPopMatrix()
# draw moving cube
    glPushMatrix()
    glTranslatef(-3, -4, 50*math.sin(time.time())-45)
    glRotatef(-90, 1, 0, 0)
    glutWireCube(2.0)
    glPopMatrix()
# draw moving sphere
    glPushMatrix()
    glRotatef((time.time() - startTime)*45, 0, 1, 0)
    glTranslatef(4, 2, 0)
    glutWireSphere(1.0, 16, 8)
    glPopMatrix()

def draw():
    glClear(GL_ACCUM_BUFFER_BIT)
    for j in range(-2,3,1):
      for i in range(-2,3,1):
        ex = i / 20.0 + uniform(-0.03,0.03)
        ey = j / 20.0 + uniform(-0.03,0.03)
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        glMatrixMode(GL_PROJECTION)
        glLoadIdentity()
        glFrustum((-7.5-ex)*1/15, (7.5-ex)*1/15, (-7.5-ey)*1/15, (7.5-ey)*1/15, 1, 100)
        glMatrixMode(GL_MODELVIEW)
        glLoadIdentity()
        glTranslatef(-ex, -ey, -15.0)
        drawWorld()
        glutSwapBuffers()
#        glAccum(GL_ACCUM, 1.0/25)
#    glAccum(GL_RETURN, 1.0)
#    glutSwapBuffers()

def keyboard(key, x, y):
    if key == chr(27):
        sys.exit(0)

glutInit([])
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_ACCUM)
glutInitWindowSize(512,512)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutIdleFunc(glutPostRedisplay)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glLightfv(GL_LIGHT0, GL_POSITION, [0.5, 1, 1, 0])
glLightfv(GL_LIGHT0, GL_AMBIENT, [0.1, 0.1, 0.1, 1])
glMaterialfv(GL_FRONT, GL_AMBIENT, [1, 1, 1, 1])
glLineWidth(2)
glutMainLoop()