On 5/22/05, Richard Hirsch <[EMAIL PROTECTED]> wrote:
>
> Of course you would want to put the symbol definitions and the
> definition of the fieldstack into a loop. I tried
> %% \newcount\angle
> %% \angle=0%\zerocount
> %% \dorecurse{12} {%
> %% \number\angle:\qquad
> %% \definestarsymbol{\the\angle}
> %% \symbol[star \number\angle]\par
> %% \advance\angle by 6}
> and did get the single symbols. I wasn't successful however in putting
> the symbol list of the fieldstack definition into a loop. Perhaps the
> ConTeXt gurus can help.
I discovered some possible sources of problems, but didn't manage to solve them.
I changed this part of code (just for debugging reasons):
\startuniqueMPgraphic{drawstar}{rotation}
draw thestar rotated \MPvar{rotation};
% this line was added
label("\MPvar{rotation}", origin);
\stopuniqueMPgraphic
Problem N. #1:
--------------
Consider now the following definition:
\newcount\angle
\angle=0
\definesymbol
[star \the\angle]
[\uniqueMPgraphic{drawstar}{rotation=\the\angle}]
\advance\angle by 6
\definesymbol
[star \the\angle]
[\uniqueMPgraphic{drawstar}{rotation=\the\angle}]
This should define two symbols, \symbol[star 0] and \symbol[star 6].
It did, but "rotation=\the\angle" resulted in "6" in both cases (the
last value), so we get two identical pictures. \the\angle can be
replaced manually by 0/6/12/... but that's not the point.
????
Problem N. #2:
--------------
Instead of writing
\definestarsymbol{0}
\definestarsymbol{6}
\definestarsymbol{12}
...
I tried to use:
\newcount\angle
{\angle=0\loop\ifnum\angle<67%
\definesymbol
[star \the\angle]
[{\uniqueMPgraphic{drawstar}{rotation=0}}]
Defining symbol \the\angle \dots\crlf
\advance\angle by 6
\repeat}
Because of some unknown reason \symbol[star 0], ... cannot be recalled at all.
Can anyone find the reason for problems?
I had very similiar problems when trying to add \loop\ifnum...\repeat
to the example in http://www.fi.muni.cz/~xholecek/animations/, which
is written in plain TeX anyway.
Mojca
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