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

x = 0
y = 0

def draw():
    glClear(GL_COLOR_BUFFER_BIT)

    global x,y
    glLoadIdentity()
    glTranslatef(x, y, 0)
    glColor3f(1, 1, 0)
    glutWireTeapot(10)

    glutSwapBuffers()


def reshape(width, height):
    glViewport(0, 0, width, height)
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluOrtho2D(10.0, 500.0, -70.0, 220.0)
    glMatrixMode(GL_MODELVIEW)

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

bpressed = False

def mousebutton(button, state, mx, my):
    global bpressed
    if button == GLUT_MIDDLE_BUTTON:
        bpressed = (state == GLUT_DOWN)
        
def mousemotion(mx,my):
    global x,y, bpressed
    if bpressed:
#        x = mx
#        y = glutGet(GLUT_WINDOW_HEIGHT) - my
        x = (float(mx) / glutGet(GLUT_WINDOW_WIDTH)) * 490.0 + 10.0
        y = (1.0 - float(my) / glutGet(GLUT_WINDOW_HEIGHT)) * 290.0 - 70.0
        glutPostRedisplay()


glutInit(sys.argv)
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB)
glutInitWindowSize(400, 400)
glutInitWindowPosition(0,0)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutMotionFunc(mousemotion)
glutMouseFunc(mousebutton)
glutReshapeFunc(reshape)
reshape(400,400)
glutMainLoop()