include <BOSL2/std.scad>
include <BOSL2/rounding.scad>
include <squircle.scad>

ten = square(50);
translate([0,0,10]) linear_extrude(height=10) {
     polygon(round_corners(ten,  method="smooth", cut=5.63, $fn=60*4));
}

color("red") squircle([50,50,10], r=25, center=false);

> See the following which all support continuous curvature rounding: > https://github.com/revarbat/BOSL2/wiki/rounding.scad#function-round_corners Nice library BOSL2 - I like it! Gives ~ identical output:- include <BOSL2/std.scad> include <BOSL2/rounding.scad> include <squircle.scad> ten = square(50); translate([0,0,10]) linear_extrude(height=10) { polygon(round_corners(ten, method="smooth", cut=5.63, $fn=60*4)); } color("red") squircle([50,50,10], r=25, center=false); https://imgur.com/lrO4URm.png

 include <BOSL2/std.scad>
 include <BOSL2/rounding.scad>
 include <squircle.scad>

 ten = square(50);
 translate([0,0,10]) linear_extrude(height=10) {
      polygon(round_corners(ten,  method="smooth", cut=5.63, $fn=60*4));
 }

 color("red") squircle([50,50,10], r=25, center=false);

The BOSL2 output is not identical to squircle. It is similar, but not the same. BOSL2 uses a 4th order bezier which cannot match the superellipse, or even a regular ellipse. If you take difference of the two shapes you can see how they aren't the same. On Mon, Nov 7, 2022 at 3:03 PM Brendan Sleight <bms@barwap.com> wrote: > > See the following which all support continuous curvature rounding: > > > https://github.com/revarbat/BOSL2/wiki/rounding.scad#function-round_corners > > Nice library BOSL2 - I like it! Gives ~ identical output:- > > include <BOSL2/std.scad> > include <BOSL2/rounding.scad> > include <squircle.scad> > > ten = square(50); > translate([0,0,10]) linear_extrude(height=10) { > polygon(round_corners(ten, method="smooth", cut=5.63, $fn=60*4)); > } > > color("red") squircle([50,50,10], r=25, center=false); > > https://imgur.com/lrO4URm.png > _______________________________________________ > OpenSCAD mailing list > To unsubscribe send an email to discuss-leave@lists.openscad.org >

 include <BOSL2/std.scad>
 include <BOSL2/rounding.scad>
 include <squircle.scad>

 ten = square(50);
 translate([0,0,10]) linear_extrude(height=10) {
      polygon(round_corners(ten,  method="smooth", cut=5.63, $fn=60*4));
 }

 color("red") squircle([50,50,10], r=25, center=false);

>The BOSL2 output is not identical to squircle. It is similar, but not the > same. Agreed > ~ identical Was shorthand for approximately identical >difference of the two shapes you can see how they aren't the same. Yep, my maths is not good enough to work out the magnitude, but I guess it's below the resolution of my printer. https://imgur.com/rzwQ39f.png On Mon, 7 Nov 2022 at 20:00, Brendan Sleight <bms@barwap.com> wrote: > > > See the following which all support continuous curvature rounding: > > https://github.com/revarbat/BOSL2/wiki/rounding.scad#function-round_corners > > Nice library BOSL2 - I like it! Gives ~ identical output:- > > include <BOSL2/std.scad> > include <BOSL2/rounding.scad> > include <squircle.scad> > > ten = square(50); > translate([0,0,10]) linear_extrude(height=10) { > polygon(round_corners(ten, method="smooth", cut=5.63, $fn=60*4)); > } > > color("red") squircle([50,50,10], r=25, center=false); > > https://imgur.com/lrO4URm.png