[metapost] fullcircle in metapost language

[Karel Horak]

José Carlos Santos napsal(a):
>> as if the circle could not be scaled and shifted ! Why ? Did
>> something change in language specification ?
> 
> I don't know, but it will accept
> 
>     cercle = fullcircle scaled (2*abs(As-I)) shifted I;
> 

Syntactic rules did not changed:

cercle = fullcircle scaled 2*abs(As-I) shifted I;

is wrong, but

cercle = fullcircle scaled 2abs(As-I) shifted I;

(without not necessary star!) is OK, as of course

cercle = fullcircle scaled (2*abs(As-I)) shifted I;

with parentheses.

All the best,
Karel Horak