New beta test version 4.beta9 now available for Windows and Linux at
http://sourceforge.net/projects/visualpython
Changes that handle nonuniform axes for curve, points, faces, and label,
which makes graphing much faster than it was on 4.beta8. If you try to
create other objects after establishing nonuniform axes an exception is
raised. Note that scene.uniform = False was never well supported in the
past due to the impossibility of displaying (say) an arrow in 3D if the
scale factors on different axes were different. My impression is that
nonuniform axes were essentially never used.
The list of "3 serious bugs" has been changed to "2 serious bugs"
(quitting, and gas.py jerky animation).
The graphing speed for curves (gcurves) is 25 times faster than it was
with 4.beta8, but still 7 times slower than Visual 3, though I don't
understand why, since it seems to me that the operations are about the
same as before. It is gcurve that needs to go as fast as possible. A
clue is that if you specify xmin, xmax, ymin, ymax (fixed axes), the
speed is as fast as with Visual 3, which implies that there's something
different in resetting the scale factors in visual.graph.
The graphing speed for points (gdots) is also 25 times faster than it
was with 4.beta8, and 5 times faster than Visual 3, where we had to plot
the letter "o", which was very slow.
My test routine for timing performance is this:
from visual.graph import *
from time import clock
c = gcurve(color=color.yellow)
t = clock()
x = 0
while x < 100:
c.plot(pos=(x,cos(x)))
x += 0.01
t = clock()-t
print t
Bruce
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