Riiing!

[fgra...@gmail.com]

Running the spectacular *Stonehenge* script under VPython 7 proceeds nicely. There is however one difference with the GlowScript display that I have noticed: the smoke rings that ascend from the mouth of an upright tube initially concealed by the main portal do it here *side up* instead of *flat* as in GlowScript. This seems to be one ramification of the *axis-up* entanglement, as the rings turn to its usual position if the (counterintuitive) instruction

        up = vector( 1, 0, 0 )

is placed after the *axis* specification (or instead of it) in the *smoke.append()* function that generates the rings.

Kind regards

[Bruce Sherwood]

Thanks for spotting that bug, which I had missed. I think the bug was introduced in the recent work to make rotations faster. The bug will be fixed in the next release of VPython 7.

Bruce