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/* d - diameter, o - overlap (fraction) */
function snapper_apart(d,o) = d*(1-o);
module snapper(d,o,l=-1,side=0) {
snapper_apart = d*(1-o);
l_ = (l<0) ? d : l;
lw = d/2;
sfn = 8*d;
module lm() {
translate([-lw/2,0,0]) hull() {
cube(size=[lw,l_-d/2,d]);
translate([lw/2,l_,0]) cylinder(d=d/8,h=d,$fn=sfn);
}
}
if(side==0) {
translate([0,l_,d/2]) sphere(d=d,$fn=sfn);
lm();
}else if(side==1) {
difference() {
for(x=[-1,1]) translate([x*snapper_apart(d,o),0,0]) {
translate([0,l_,d/2]) sphere(d=d,$fn=sfn);
lm();
}
translate([0,l_,d/2]) sphere(d=d,$fn=sfn);
}
}else
echo("ERROR: what side?");
}
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