[NTG-context] MetaPost cutdraw

Henning Hraban Ramm texml at fiee.net
Wed Jul 6 11:27:09 CEST 2022

Am 06.07.22 um 09:15 schrieb Hans Hagen via ntg-context:
> On 7/6/2022 7:10 AM, Aditya Mahajan via ntg-context wrote:
>> On Wed, 6 Jul 2022, Henning Hraban Ramm via ntg-context wrote:
>>> Hi, I’m trying to understand MetaPost better.
>>> I’d like to draw a fat line that’s cut at its end points.
>> You mean like linecap = butt?

Yes, but that doesn’t behave differently.

> \startMPpage[offset=5mm]
>      path p;
>      p := origin -- (7cm,0);
>      interim  linecap := squared;
>      draw p withpen ((pensquare            ) scaled 5mm) withcolor red ;
>      draw envelope  ((pensquare            ) scaled 5mm) of p withcolor 
> green ;
>      draw envelope  ((pensquare rotated eps) scaled 5mm) of p withcolor 
> blue ;
> \stopMPpage
> (there is an "ontarget" chapter about envelopes; mikael and i spent 
> quite some time figuring out a few things but in the end conclused that 
> mp des the right thing given the strategy it folows but it definitely 
> has side effects)

Thank you for the insight, but does that mean I can’t get my “butt 
capped” lines and I must shorten the lines by half the pen size?


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