from OpenGL.GL import *   
from OpenGL.GLU import *
from OpenGL.GLUT import *
 
def InitGL(Width, Height):
    glClearColor(0.0, 0.0, 0.0, 0.0)
    #gluLookAt(-0.5, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0)
    #glClearDepth(1.0) 
    #glDepthFunc(GL_LESS) 
    #glEnable(GL_DEPTH_TEST)
    #glEnable(GL_LIGHTING)
    #glEnable(GL_LIGHT0)
    #glEnable(GL_COLOR_MATERIAL)
    
    
def ReSizeGLScene(Width, Height): 
    if Height == 0: Height = 1
    glViewport(0, 0, Width, Height)
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    
def DrawGLScene():
    glClear(GL_COLOR_BUFFER_BIT)
    glMatrixMode(GL_MODELVIEW)
    glLoadIdentity()
    gluLookAt(-0.5, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0)
    glPushMatrix()
    glTranslatef(-1.0, 0.0, 0.0)
    glEnable(GL_POINT_SMOOTH)
    glPointSize(3)
    glBegin(GL_POINTS)
    glVertex3f(0.0, 0.0, 0.0)
    glEnd()
    glPopMatrix() 
    glTranslatef(1.0, 0.0, 0.0)
    glBegin(GL_LINE_LOOP)
    glVertex3f(0.4, 0.5, 0.6)
    glVertex3f(0.2, 0.4, 0.1)
    glEnd()
    glutSwapBuffers()
 
def KeyPressed(*args):
    if args[0] == "\033": sys.exit()
 
def main():
    glutInit(sys.argv)
    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_ALPHA | GLUT_DEPTH)
    glutInitWindowSize(800, 600)
    glutInitWindowPosition(0, 0)
    glutCreateWindow("Will it ever works properly at last?")
    glutDisplayFunc(DrawGLScene)
    glutIdleFunc(DrawGLScene)
    glutReshapeFunc(ReSizeGLScene)
    glutKeyboardFunc(KeyPressed)
    InitGL(800, 600)
    glutMainLoop()
 
main()