# Beginning of a program to draw a simple 2D grid.

import sys
from OpenGL.GLUT import *
from OpenGL.GL import *
from OpenGL.GLU import *


def draw():
    glClear(GL_COLOR_BUFFER_BIT)
    for i in range(0,20):
        glBegin(GL_LINES)
        x = i/10.0 - 1
        y = -1 
        glVertex2f(x,y)
        x = i/10.0 - 1
        y = 1
        glVertex2f(x,y)
        glEnd()
    glFlush()

def reshape(w,h):
    pass


def keyboard(key, x, y):
    if key == 'q':
        sys.exit(0)
    elif key == ' ':
        print 'Mouse is at', x, y

glutInit([])
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)
glutInitWindowSize(500, 500)
glutInitWindowPosition(0,0)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutReshapeFunc(reshape)
glutMainLoop()