Re: simple poscrit question

[sdfgsdhdshd]

sdfgsdhdshd wrote:
> 
> 
> Kieren MacMillan wrote:
>> 
>> Hi sdfgsdhdshd,
>> 
>>> In a score, i add some ps code to draw a few specific lines.
>>> The question is: how to draw with a precise length in cm?
>>> Like:
>>> 0 0 moveto x y lineto
>>> how must be x to be exactly 3 cm, and y exactly 2 cm?
>> 
>> The page
>> <http://www.physics.emory.edu/~weeks/graphics/howtops1.html>
>> will tell you how to scale to cm.
>> 
> 
> small example based on the wiki page:
> #(set-global-staff-size 15.000000)
> { a_\markup { \postscript #"0 0 moveto 0 13.38582677165 lineto stroke" } }
> 

For writing some lines, and doing some specific computations, i just need to
know precisely which unit llp is using. By many trial and errors i failed to
determine it. The lilypond devs surely know the formula.

If this message is in the wrong forum, please tell me in which forum i must
ask.

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