Re: metafun: circular arc

[Floris van Manen via ntg-context <ntg-context@ntg.nl>]

In the example the text is drawn as:

draw followtext(q, "\strut TEXT ONE")


it looks as if the \strut generates a space before the text.
e.g. if you omit the \strut, the text will align at the start point.
In my perception, the \strut is a zero width box, so it should not 
generate the space before.
But I might be wrong here (most likely ;-)

.F




On 05/10/2021 23:32, Thomas A. Schmitz via ntg-context wrote:
> 
> \startuseMPgraphic{empedocless}
> path p, q, r ;
> pair a ;
> 
> p := fullcircle scaled 10cm ;
> drawarrow p              withpen pencircle scaled 1mm withcolor red ;
> draw        point 0 of p withpen pencircle scaled 1mm withcolor blue ;
> q := p cutafter (point .4 along p) ;
> drawarrow q              withpen pencircle scaled .5mm withcolor green ;
> draw followtext(q, "\strut TEXT ONE") ;
> 
> p := fullcircle scaled 8cm ;
> drawarrow p              withpen pencircle scaled 1mm withcolor cyan ;
> draw        point 0 of p withpen pencircle scaled 1mm withcolor magenta ;
> q := p cutafter (point .3 along p) ;
> q := q rotated 120 ;
> drawarrow q              withpen pencircle scaled .5mm withcolor yellow ;
> draw followtext(q, "\strut TEXT TWO") ;
> 
> % the real deal: best make a macro for this
> 
> p := fullcircle scaled 6cm ;
> draw        point 0 of p withpen pencircle scaled 5mm withcolor blue ;
> drawarrow p              withpen pencircle scaled 1mm withcolor red ;
> a := (point eps of p) rotated 45 ;
> draw a withpen pencircle scaled 2mm;
> q := p cutafter a ;
> q := q rotated 20 ;
> drawarrow q              withpen pencircle scaled .5mm withcolor green ;
> draw followtext(q, "\strut TEXT TWO") ;
> 
> \stopuseMPgraphic
> 
> \useMPgraphic{empedocless}
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