Would Chapter 11, section 11.1 Showing Paths of the MetaPost manual, be 
any help here?

Below is a MWE of a random path of curves and straight lines. The points 
are shown using drawpoints. The arrow path and control lines are also 
shown and are better described in the Metapost manual.

%%%%%%%%%%%%MWE%%%%%%%%%%%

\setuppapersize [A4,landscape]

\starttext

\startMPpage[instance=doublefun]

StartPage;

width := PaperWidth ; height := PaperHeight ; unit := cm ;

path p ;

path pat;

pat := (5cm,5cm);

for a = 1 step 1 until 10:

x:= uniformdeviate(10) +10;

y:= uniformdeviate(10) +10;

if odd a:

pat := pat .. (x*cm,y*cm);

else:

pat := pat -- (x*cm,y*cm);

fi;

draw pat withpen pencircle scaled 5mm withcolor .5green;

endfor;

drawarrowpath pat;

drawpoints pat;

drawcontrollines pat withcolor .625red ;

StopPage;

\stopMPpage

\stoptext

%%%%%%%%%%%%%%% end MWE %%%%%%%%%%%%%%%%%

A better coder than me may be able to incorporate it into what you require.

Best Wishes

Keith McKay

On 28/05/2020 12:33, Gerben Wierda wrote:
> I would like to be able (during development) to draw paths where the points of the path (and maybe thing slike directions) are visualised. E.g. a path where each pair in teh path is also drawn as a dot and maybe teh directions drawn as small arrows.
>
> Does someone have such a beast lying around?
>
> G
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