I wanted to generate a list of 640 x 480 2d points. The format of the list must be (x1, y1, x2, y2 … xn, yn).
I just came with a solution using Python list comprehensions :
w, h = 640, 480 mesh =  * w * h * 2 mesh[0::2] = range(w) * h mesh[1::2] = (x for x in xrange(h) for m in xrange(w))
Seriously, thanks python.