When I run this example with mpost amd mptopdf, everything is fine.
But running it with context mkiv, using its mplib I get
an error.
The problematic command is dotlabels.top(0,1,2,3,4,5,6);
Commented it out, then it works with context, too.
Herbert
------------------------------------------------------
[...]
systems : begin file latex5 at line 1
mplib : initializing instance 'metafun' using format 'metafun'
mplib : loading 'metafun.mp' (experimental metapost version two)
mplib > mp terminal: ! Redundant equation.
<to be read again>
;
<*> ...caled 0.2in yscaled 0.08 rotated 30; u=4cm;
path p; x0=x3=x4;
z1-z0=0...
mplib > mp error: unknown, no error, terminal or log messages
mplib > mp terminal: [1]
[...]
-------------------------------------------------------
\starttext
\startMPcode
pickup pencircle
scaled 0.2in yscaled 0.08 rotated 30;
u=4cm;
path p; x0=x3=x4;
z1-z0=0.5in*dir 30; z2-z3=whatever*(z1-z0);
z6-z5=whatever*(z1-z0); z1-z6=1.2*(z3-z0);
rt x3=lft x2;x5=0.55[x4,x6]; y4=y6;
lft x3=bot y5=0; top y2=1in;
draw z0--z1--z2--z3--z4--z5--z6 withcolor .7white;
dotlabels.top(0,1,2,3,4,5,6);
\stopMPcode
\stoptext
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