performance tests / cube with rounded corners (openSCAD)

thingiverse

I conducted performance tests on various functions that generate a box with rounded corners. You can locate them within the scad-file. Here are my results: PreView Render STL-Size v1 1 seconds 0 seconds 5,911,647 v2 0 seconds 215 seconds 3,773,709 v3 1 second 0 seconds 2,053,339 v3a 121 seconds 0 seconds 2,053,339 rB 0 seconds 171 seconds 3,648,521 rc 126 seconds 0 seconds 2,057,417 v1 performs well in terms of speed but leaves a 5MB file. v3 has the same speed and produces the smallest file size. All other versions have poor run times either during preview or later when rendering. Notably, there is a significant runtime difference between v3 and v3a. So...the winner is this one: module BoxMitAbgerundetenEcken3(x, y, z, r=1) { hull() { translate([ r, r, r]) sphere(r=r); translate([x-r, r, r]) sphere(r=r); translate([ r, y-r, r]) sphere(r=r); translate([x-r, y-r, r]) sphere(r=r); translate([ r, r, z-r]) sphere(r=r); translate([x-r, r, z-r]) sphere(r=r); translate([ r, y-r, z-r]) sphere(r=r); translate([x-r, y-r, z-r]) sphere(r=r); } }