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refacto: swap when leng == 2

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Justin Lin
2022-04-09 18:48:35 +08:00
parent 18e0ecceae
commit 410c4153f4
1 changed files with 1 additions and 0 deletions
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src/__comm__/_convex_hull3.scad
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@@ -6,6 +6,7 @@ function _cmp(a, b) =
function _convex_hull_sort_by_xyz(pts) = function _convex_hull_sort_by_xyz(pts) =
let(leng = len(pts)) let(leng = len(pts))
leng <= 1 ? pts : leng <= 1 ? pts :
leng == 2 ? (_cmp(pts[1], pts[0]) ? pts : [pts[1], pts[0]]) :
let( let(
pivot = pts[0], pivot = pts[0],
before = [for(j = 1; j < leng; j = j + 1) if(_cmp(pts[j], pivot)) pts[j]], before = [for(j = 1; j < leng; j = j + 1) if(_cmp(pts[j], pivot)) pts[j]],