[PyOpenGL-Users] name 'Opengl' is not defined

[George B. <br...@ve...>]

Still new at this, especially graphics.

I'm working on a 3d graphics project, and found nice samples for
mat3D.py, which is available from http://www.scipy.org/WilnaDuToit. The
program includes this code:

"""OpenGL-based 3d surface plot"""
#last updated 12/10/2006
from OpenGL.GL import *
from OpenGL.GLUT import *
from OpenGL.Tk import *
import Tkinter

import numpy as N
import tkFileDialog

-snip-

def make_plot(self,colors = Colors):
    """Draw a plot in a Tk OpenGL render window."""
    
    # Some api in the chain is translating the keystrokes to this octal
string
    # so instead of saying: ESCAPE = 27, we use the following.
    ESCAPE = '\033'

    # Number of the glut window.
    window = 0
        
    # Create render window (tk)
    f = Tkinter.Frame()
    f.pack(side = 'top')
    self.offset = 0.05
    self.textlength,self.xticks,self.yticks,self.zticks
=self.GetFormatMaxTextLength() #todo: each tick own offset
    o = Opengl(width = 640, height = 480, double = 1, depth = 1)
    o.redraw = self.redraw

-snip-

which yields the following error:

Traceback (most recent call last):
  File "/home/browerg/text.py", line 35, in <module>
    o = Opengl(None, width = 400, height = 200, double = 1, depth = 1)
NameError: name 'Opengl' is not defined



Searching the web led me to text.py at
http://www.koders.com/python/fid02D8AE6DDE1B87CF36E3766500C78F05AAF6C31C.aspx?s=tkinter#L33. The program includes this code:

#!/usr/bin/env python

from OpenGL.GL import *
from OpenGL.Tk import *

from logo import *

-snip-

import Tkinter, sys

o = Opengl(None, width = 400, height = 200, double = 1, depth = 1)

-snip-

 which gave the same error:

Traceback (most recent call last):
  File "/home/browerg/text.py", line 35, in <module>
    o = Opengl(None, width = 400, height = 200, double = 1, depth = 1)
NameError: name 'Opengl' is not defined


I'm running Python2.5, Tk8.4, and Tcl8.4 on Ubuntu 7.10. Hardware is an
i686 laptop.

What am I missing?

Thanks in advance.

George