[metapost] problem with drawoptions ?

[Hans Hagen]

On 7/5/2017 10:05 PM, Christophe Poulain wrote:
> Sorry for this question, but i must be tired...
> 
> In this code (on metapost 1.999 - Debian
> -----------------------
> prologues:=2;
> 
> beginfig(1);
>    path seg;
>    seg=(0,0)--(50,50);
>    draw seg withcolor red;
>    drawoptions(shifted (25,0));
>    draw seg withcolor blue;
>    drawoptions(shifted (50,0));
>    draw seg withpen pencircle scaled 2bp;%*
>    draw seg withpen pencircle scaled 2bp withcolor green;%*
>    draw seg withcolor green withpen pencircle scaled 2bp;%*
>    drawoptions();
>    draw (seg shifted (75,0)) withpen pencircle scaled 2bp withcolor 
> red+green;
> endfig;
> 
> end
> ----------------------
> 
> why the drawoptions parameters not applied on the line %* ?
the drawoptions are applied to a path and the scaled and drawoptions is 
applied to the pen, like

     path seg; seg=(0,0)--(50,50);
     draw seg withcolor red withpen pencircle shifted (25,0);
     draw seg withcolor blue withpen pencircle shifted (50,0);
     draw seg withcolor green withpen pencircle;
     draw seg withpen pencircle scaled 2bp shifted (50,0);%*

(draw options is just text applied to a path / picture and normally 
contains a pen specification or color)

Hans

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                                           Hans Hagen | PRAGMA ADE
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