[NTG-context] Re: How can I use a variable for a MetaPost coordinate ?

["peter.hopcroft--- via ntg-context" <ntg-context@ntg.nl>]

Yes, indeed. The metafun manual also explains things about overlays and layers I hadn't known. I'd previously ignored that manual.

Thank you,
Peter

> On 5/10/2023, at 7:05 PM, Thomas A. Schmitz <thomas.schmitz@uni-bonn.de> wrote:
> 
> 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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