ppchtex+pstricks wrong output

ppchtex+pstricks wrong output

[Ricardo Sanchez Carmenes]

Dear Hans and ppchtex users:

I am using some of your conTeXt modules from plain+pdftex
(not the whole package), especially the ppchtex modules.

ppchtex works beautifully with pictex, i.e., the following
simple sample file compiles correctly with pdftex:

%%%%%% CUT: ppch-ok.tex %%%%%%%%%%%%%%%%%%%
\input m-pictex
\input m-ch-en

\startchemical
  \chemical[ONE,SB13,DB7,Z0137][C,H,R^1,O]
\stopchemical

\bye
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

However, when I try to use ppchtex with pstricks instead of
pictex, the file compiles, but gives the wrong result, with
labels and bounds that should go on the top of the formula
printed at the bottom, and vice-versa. Besides, the labels
(or substituents) are then badly positioned with respect to
the bounds.

See the attached sample, that should, theoretically, give the
same result as above, after passing through tex->dvips->ps2pdf:

%%%%%% CUT: ppch-bad.tex %%%%%%%%%%%%%%%%%%%
\input pstricks
\input pst-plot
\input m-ch-en

\startchemical
  \chemical[ONE,SB13,DB7,Z0137][C,H,R^1,O]
\stopchemical

\bye
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

It looks like as if, somewhere, the ppchtex macro that places
bounds and substituents above or bellow, had a sign changed.
The same error arises when using pstricks+ppchTeX from latex.

Regards,
Ricardo.

Re: ppchtex+pstricks wrong output

[Hans Hagen]

At 03:43 PM 11/12/2001 +0100, Ricardo Sanchez Carmenes wrote:
>On Mon, 12 Nov 2001, Hans Hagen wrote:
>
> > At 07:27 PM 11/10/2001 +0100, Ricardo Sanchez Carmenes wrote:
> > >Dear Hans and ppchtex users:
> > >
> > >I am using some of your conTeXt modules from plain+pdftex
> > >(not the whole package), especially the ppchtex modules.
> >
> > >However, when I try to use ppchtex with pstricks instead of
> > >pictex, the file compiles, but gives the wrong result, with
> > >labels and bounds that should go on the top of the formula
> >
> > hm, seems like pstricke rotates the other way around (i have to do a
> > rotate/reverse rotate in pstricks, partly due to some bug with zero
> > angles). I swapped the angles so it should work ok now. (in \rput)
>
>Good.
>
>BTW, are you aware that it is possible to use pstricks from pdftex
>using a strategy similar to the one you implemented in supp-mps to
>handle inline metapost code (a macro called pdftricks.sty has been
>released for this purpose) ?

i've heard about it but not looked into it; my problem with pstricks is 
that it is too inaccurate

Hans
-------------------------------------------------------------------------
                                   Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                       Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------

Re: ppchtex+pstricks wrong output

[Ricardo Sanchez Carmenes]

On Mon, 12 Nov 2001, Hans Hagen wrote:

> At 07:27 PM 11/10/2001 +0100, Ricardo Sanchez Carmenes wrote:
> >Dear Hans and ppchtex users:
> >
> >I am using some of your conTeXt modules from plain+pdftex
> >(not the whole package), especially the ppchtex modules.
>
> >However, when I try to use ppchtex with pstricks instead of
> >pictex, the file compiles, but gives the wrong result, with
> >labels and bounds that should go on the top of the formula
>
> hm, seems like pstricke rotates the other way around (i have to do a
> rotate/reverse rotate in pstricks, partly due to some bug with zero
> angles). I swapped the angles so it should work ok now. (in \rput)

Good.

BTW, are you aware that it is possible to use pstricks from pdftex
using a strategy similar to the one you implemented in supp-mps to
handle inline metapost code (a macro called pdftricks.sty has been
released for this purpose) ?

> Hans

Regards,
Ricardo.

Re: ppchtex+pstricks wrong output

[Hans Hagen]

At 07:27 PM 11/10/2001 +0100, Ricardo Sanchez Carmenes wrote:
>Dear Hans and ppchtex users:
>
>I am using some of your conTeXt modules from plain+pdftex
>(not the whole package), especially the ppchtex modules.

>However, when I try to use ppchtex with pstricks instead of
>pictex, the file compiles, but gives the wrong result, with
>labels and bounds that should go on the top of the formula

hm, seems like pstricke rotates the other way around (i have to do a 
rotate/reverse rotate in pstricks, partly due to some bug with zero 
angles). I swapped the angles so it should work ok now. (in \rput)

Hans
-------------------------------------------------------------------------
                                   Hans Hagen | PRAGMA ADE | pragma@wxs.nl
                       Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------