[Plplot-devel] setlocale

[Phil R. <p.d...@gm...>]

Hi all
I have been making further optimisations to the wxwidgets backen, as I have
still been finding it painfully slow for plshade calls.
It turned out that almost all the time within the backend (>99%) was spent
selecting pens and brushes and allocating memory for every fill within the
plshade call. Less that 1% was actually spent within the rendering call to
wxWidgets. I have made some good improvements here.

However, in addition to this, about 50% of the total execution time is
spent in the setlocale function. This is called before and after each
polygon fill in the core plplot code.

I wondered if anyone really knows the purpose of these calls? Perhaps they
are to ensure we have consistent numeric representations across regions? If
so, then I don't really understand why they are needed for polygon fills.

Any thoughts would be welcome
Phil