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

letters = []

def draw():
	glClear(GL_COLOR_BUFFER_BIT)
	for a in letters:
		glRasterPos2fv(a[0])
		glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, ord(a[1]))
	glutSwapBuffers()


def reshape(width, height):
	glViewport(0, 0, width, height)
	glMatrixMode(GL_PROJECTION)
	glLoadIdentity()
	gluOrtho2D(0, width, 0, height)
	glMatrixMode(GL_MODELVIEW)

def keyboard(key, x, y):
	if key == chr(27):
		sys.exit(0)
	else:
		a = [ [x,glutGet(GLUT_WINDOW_HEIGHT)-y], key ]
		letters.append(a)
	glutPostRedisplay()


glutInit(sys.argv)
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB)
glutInitWindowSize(400, 400)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardUpFunc(keyboard)
glutReshapeFunc(reshape)
reshape(400,400)
glutMainLoop()