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

points = [ { "xyz":[0.0, 0.0], "color":[1, 1, 1] },
		   { "xyz":[0.4, 0.0], "color":[0, 1, 0] },
		   { "xyz":[0.8, 0.8] },
		   { "xyz":[0.0, -1.0], "color":[0, 1, 1] },
		   { "xyz":[-1.0, 0.0], "color":[1, 0, 1] },
		   { "xyz":[-0.5, -0.2], "color":[1, 0, 0] }
         ]

def draw():
	glClear(GL_COLOR_BUFFER_BIT)
	glBegin(GL_TRIANGLES)
	for p in points:
		if p.has_key("color"):
			glColor3fv(p["color"])
		glVertex2fv(p["xyz"])
	glEnd()
	glFlush()

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

def reshape(w, h):
    glViewport(0, 0, w, h)
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluOrtho2D(-1, 1, -1*h/w, 1*h/w)
    glMatrixMode(GL_MODELVIEW)

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