Have a look at chapter 6.4 of the metafun manual. You need StartPage ...
StopPage in your MPcode, then you can knock yourself out by using
variables such as PaperHeight or TextHeight and do all sorts of
calculations.
All best
Thomas
On 10/5/23 05:54, peter.hopcroft--- via ntg-context wrote:
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
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