Illusionen des Jahres – 2019
http://illusionoftheyear.com/2019/12/dual-axis-illusion/
https://pluspora.com/posts/2674410
http://illusionoftheyear.com/2019/12/dual-axis-illusion/
https://sites.google.com/site/ulrichbaer/
include <ub.scad>// ⇒ v.gd/ubaer
anima=1;
fn=200;
Color(0.6,l=.75){
rotate(t0/3)Schleife(f=1.5,phi=45);
T(0,0,50)R(90)rotate(-t0/2)Schleife(f=2/3,r=20,a=50,grad=3.0*360,phi=30);
}
module Schleife(f=1.5,r=50,a=20,grad=720,phi=0){
step=grad/fn;
for(i=[0:fn])hull(){
rotate(i*step)T(r,0,sin(i*step*f+phi)*a)sphere(2,$fn=12);
rotate((i+1)*step)T(r,0,sin((i+1)*step*f+phi)*a)sphere(2,$fn=12);
}
}
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