Hello list,
I want to draw lines on a page. I want to pass my line coordinates as a percent
of \width or \textheight, rather than as millimetres. So that if I change the
page size I don't need to change the coordinates.
The MWE below compiles but the pdf does not have any lines drawn on it.
Is there a way of doing calculations on the coordinates for the draw using
ConTexT variables like \textheight?
Thank you,
Peter Hopcroft
------
\starttext
Some text
\startMPcode
pickup pensquare scaled 1pt;
draw (0mm,0mm)--(0mm,\textheight) withcolor red
\stopMPcode
More text
\startMPcode
pickup pensquare scaled 1pt;
draw (0mm,0mm)--(0mm,50mm) scaled \numexpr\textheight/50mm\relax
\stopMPcode
\stoptext
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