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

viewRotY = 0
viewRotX = 0

tex = Texture2D("contour.tif")

def draw():
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)

    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluPerspective(50.0, 1.0, 1.0, 100.0)
    glMatrixMode(GL_MODELVIEW)

    glLoadIdentity()

    glTranslatef(0.0, 0.0, -10.0)
    glRotatef(viewRotX, 1.0, 0.0, 0.0)
    glRotatef(viewRotY, 0.0, 1.0, 0.0)

    tex.apply()
    planeCoefficients = [ 1, 0, 0, 0 ]
    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR)
#    glTexGenfv(GL_S, GL_OBJECT_PLANE, planeCoefficients)
    glTexGenfv(GL_S, GL_EYE_PLANE, planeCoefficients)
    glEnable(GL_TEXTURE_GEN_S)

    glTranslatef(math.sin(time.time()/1),0,0)

    glutSolidTeapot(2.0)
    
    glutSwapBuffers()


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

def specialkey(key,x,y):
    global viewRotX, viewRotY
    if key == GLUT_KEY_LEFT:
        viewRotY = viewRotY + 3
    elif key == GLUT_KEY_RIGHT:
        viewRotY = viewRotY - 3
    elif key == GLUT_KEY_UP:
        viewRotX = viewRotX + 3
    elif key == GLUT_KEY_DOWN:
        viewRotX = viewRotX - 3
    glutPostRedisplay()

glutInit([])
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH)
glutInitWindowSize(700,700)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutSpecialFunc(specialkey)
glutIdleFunc(glutPostRedisplay)
glEnable(GL_DEPTH_TEST)
glEnable(GL_LIGHTING)
glEnable(GL_LIGHT0)
glutMainLoop()