thin() and Arrow

Hello,

an interesting question was filed today on the following forum:

http://asy.gmaths.net/forum/les-demandes-d-aide-f15/thin-et-arrow-t227.html

The two images show what seems strange: how can we explain the size of the arrowhead in the first case?

Thanks

With both Asymptote 2.16 and the current svn development version, the code

import graph;
size(5cm);
draw((0,0)--(1,1)); // juste pour donner du volume.
xaxis("$x$", thin(), Arrow);

produces the expected result:

I found the problem that has been reported with version 2.16 and W7 :

import graph;
size(5cm);
draw((0,0)--(1,1));
xaxis("$x$", thin(), Arrow);
label("Asymptote "+version.VERSION,point(N),S);

asy -f pdf -k asy_2012_09_12_thin_arrow_fig1.asy

http://docs.gmaths.net/tempo/thin_arrow/

I just put the latest version of Asymptote (see picture) on my linux server (to allow compilations on the forum) and again there is the problem of the dimension arrowhead.

http://asy.gmaths.net/forum/les-demandes-d-aide-f15/thin-et-arrow-t227.html#p1680

:-(

I was able to reproduce the problem on Windows 7 (but not on linux). It is a numerical resolution issue
and unfortunately Philippe and I broke the work around for such cases back in r2969. It is fixed now in r5491.
I'm about to release asy 2.17 with this fix; but in the meantime one can simply obtain a new copy of

http://asymptote.svn.sourceforge.net/viewvc/asymptote/trunk/asymptote/base/plain_arrows.asy

I forwarded the information to the person who submitted the problem.
Thank you.

Hello

I was able to reproduce the problem under Linux
Dell Latitude D630 laptop (5 years old)
32bits architecture with 32bits/686 linux distribution Semplice (Debian Sid)

But with a more recent Desktop Computer (HP something)
64bits architecture with 64 bits linux distribution Siduction (Debian Sid)
I do not have the problem.

Regards
O.G.

I have some bad news: the new version of the file does not change anything for the problem with my setup:

Windows 7 Professionnel - Service Pack 1
Intel(R) - Core(TM)2 Quad CPU Q9550 2.83 GHz
Système d'exploitation 64bits

MikTeX 2.9 (updated)
pdflatex -version : MiKTeX-pdfTeX 2.9.4535 (1.40.13) (MiKTeX 2.9)

Since it is a numerical resolution issue, the problem may appear on some architectures and not on others.
Regarding the fix not working, probably asy is still accessing the old version of plain_arrows.asy. Can you please post the output and generated eps produced by

asy -vv  file.asy

where file contains the code.

I'm sorry for the false announcement: I asked to overwrite the old file … and I do not know what happened, but the replacement had not been executed. This time, it's done and it works.
Thank you again.