Python GL

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
from numpy import *
import sys
def init():
    glClearColor(0.0, 0.0, 0.0, 1.0)
    gluOrtho2D(-2.0, 2.0, -2.0, 2.0)
def plotfunc():
    glClear(GL_COLOR_BUFFER_BIT)
    glColor3f(0.0,0.0,0.0)
    glPointSize(1.0)
    glBegin(GL_POINTS)
    for a in arange(0.1,2.0,0.1):
        for t in arange(-200.0,200.0,0.005):
            x = sin(0.99*t)-0.7*cos(3.01*t)
            y = cos(1.01*t)+0.1*sin(15.03*t)
            glColor3f(sin(t)**2,cos(t)**2,sin(t)**2/2+cos(t)**2/2)
            glVertex2f(x,y)
    glEnd()
    glFlush()
def main():
    glutInit(sys.argv)
    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB)
    glutInitWindowPosition(0,0)
    glutInitWindowSize(1366,768)
    glutCreateWindow("Function Plotter")
    glutDisplayFunc(plotfunc)
    init()
    glutMainLoop()
main()