[NTG-context] TikZ \shade broken

[Gavin via ntg-context <ntg-context@ntg.nl>]

Hi List,

First, a big thanks to Aditya for solving the missing pgfsys-luatex.def! That was a show-stopper on my Mac.

Now that I can use TikZ again, I am running into a problem with the \shade command. Below is a small working example from the TikZ manual [pp.39-41]. The first tikzpicture is the example. The second TikZ picture is similar, but without any shading.

\usemodule[tikz]
\starttext
\starttikzpicture  
\shade[top color=yellow,bottom color=black] (0,0) rectangle +(2,1);
\shade[left color=yellow,right color=black] (3,0) rectangle +(2,1);
\shadedraw[inner color=yellow,outer color=black,draw=yellow] (6,0) rectangle +(2,1);
\shade[ball color=green] (9,.5) circle (.5cm);
\stoptikzpicture
\starttikzpicture  
\draw[color=black] (0,0) rectangle +(2,1);
\fill[color=yellow] (3,0) rectangle +(2,1);
\filldraw[fill=black,draw =yellow] (6,0) rectangle +(2,1);
\fill[fill=green] (9,.5) circle (.5cm);
\stoptikzpicture
\stoptext
\stoptext

The second picture works. The first picture produces quite an error message (below). I’m using

ConTeXt  ver: 2023.06.01 09:42 LMTX  fmt: 2023.6.2

on an M1 Mac with Ventura 13.4

Any help would be greatly appreciated!

Gavin



tex error       > tex error on line 8 in file ./TikZtest.tex: Valid keyword expected, likely 'direction'

<macro> \pgfsys@vertshading 
#1#2#3->{\pgf@parsefunc {#3}\pgfmathparse {#2}\setbox \pgfutil@tempboxa =\hbox dir 
TLT to\pgfmathresult pt{\vbox to\pgf@max {\vfil \pgfsys@invoke {/Sh sh}}\hfil }\pgf@process {\pgfpoint {#2}{\pgf@max }}\immediate \saveboxresource resources {/Shading 
<argument> 
...dafter \expandafter \def \expandafter \expandafter \expandafter \@@args \expandafter \expandafter \expandafter {\csname pgf@args\pgf@shadingname \endcsname }\expandafter \expandafter \expandafter \@temp \expandafter \@args \@@args 
\expandafter  ...
<macro> \pgfutil@firstoftwo 
#1#2->#1
<argument> 
...r \expandafter \expandafter {\csname pgf@args\pgf@shadingname \endcsname }\expandafter \expandafter \expandafter \@temp \expandafter \@args \@@args \expandafter \pgfmath@smuggleone \csname \pgf@shadingxname \endcsname \endgroup }{}
\pgf@invokesh ...
<macro> \pgfutil@secondoftwo 
#1#2->#2
<macro> \pgfshadepath 
...e@cos }{0pt}{0pt}\pgfsys@transformcm {\pgf@sys@tonumber {\pgf@xc }}{0}{0}{\pgf@sys@tonumber {\pgf@yc }}{0pt}{0pt}\ifx \pgf@shade@extra@transform \pgfutil@empty \else \pgflowlevel {\pgf@shade@extra@transform }\fi \pgfuseshading {#1}
\pgfsys@endsc ...
...

<line 3.8> 
\shade[top color=yellow,bottom color=black] (0,0) rectangle +(2,1);

1     % !TEX useAlternatePath
2     % !TEX useConTeXtSyncParser
3     
4     \usemodule[tikz]
5     
6     \starttext
7       \starttikzpicture  
8 >>      \shade[top color=yellow,bottom color=black] (0,0) rectangle +(2,1);
9         \shade[left color=yellow,right color=black] (3,0) rectangle +(2,1);
10         \shadedraw[inner color=yellow,outer color=black,draw=yellow] (6,0) rectangle +(2,1);
11         \shade[ball color=green] (9,.5) circle (.5cm);
12       \stoptikzpicture
13       \starttikzpicture  
14         \draw[color=black] (0,0) rectangle +(2,1);
15         \fill[color=yellow] (3,0) rectangle +(2,1);
16         \filldraw[fill=black,draw =yellow] (6,0) rectangle +(2,1);
17         \fill[fill=green] (9,.5) circle (.5cm);
18       \stoptikzpicture
You started a keyword but it seems to be an invalid one. The first character(s)
might give you a clue. You might want to quit unwanted lookahead with \relax.
mtx-context     | fatal error: return code: 1

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________