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

startTime = time.time()

def drawWorld():
    glEnable(GL_LIGHTING)
# draw ground
    glBegin(GL_QUADS)
    glNormal3f(0, 1, 0)
    glVertex3f(-10, -5, 10)
    glVertex3f(10, -5, 10)
    glVertex3f(10, -5, -10)
    glVertex3f(-10, -5, -10)
    glEnd()
# 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_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)

    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluPerspective(50.0, 1.0, 1.0, 1000.0)
    glMatrixMode(GL_MODELVIEW)

# Left eye    
    glColorMask(GL_TRUE, GL_FALSE, GL_FALSE, GL_FALSE)
    glLoadIdentity()
    glTranslatef(-0.2, 0.0, -15.0)
    drawWorld()

# Right eye    
    glClear(GL_DEPTH_BUFFER_BIT)
    glColorMask(GL_FALSE, GL_TRUE, GL_TRUE, GL_FALSE)
    glLoadIdentity()
    glTranslatef(0.2, 0.0, -15.0)
    drawWorld()
    glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE)
    
    glutSwapBuffers()


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


glutInit([])
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH)
glutInitWindowSize(700,700)
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()