[NTG-context] Metafun: how to draw a straight line past the end points

Aditya Mahajan adityam at umich.edu
Wed Dec 9 18:37:24 CET 2020

On Wed, 9 Dec 2020, Otared Kavian wrote:

> Thanks a lot ! Indeed that does the job, which shows how wonderful Metafun is !

Or, if you want to use high school algebra:

    z1 = (1cm,3cm) ;
    z2 = (5cm, 9cm) ;
    z3 = 1cm * dir(angle (z2 - z1)) shifted z2;
    draw z1 -- z3 ; 
    draw z1 -- z2 withcolor red;


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