Circle Path

Generates a path in the shape of a circle

 
function circle(r=100,steps=100)=
[ for(t=[0:1/steps:1])
let(  x =r* sin(t*360),   y =r*cos(t*360)  )
[x,y] ];

// function close adds a last point equal yo the first


function close(p)= concat(p,[p[0]]);


module polyline(p) {for(i=[0:max(0,len(p)-2)])line(p[i],p[i+1]);}
module line(p1, p2 ,width=0.5) 
{
    hull() {
        translate(p1) sphere(width);
        translate(p2) sphere(width);
    }
}


polyline(close(circle()));