diff options
Diffstat (limited to 'content/geometry/delaunay.cpp')
| -rw-r--r-- | content/geometry/delaunay.cpp | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/content/geometry/delaunay.cpp b/content/geometry/delaunay.cpp index 5672b57..9ae9061 100644 --- a/content/geometry/delaunay.cpp +++ b/content/geometry/delaunay.cpp @@ -99,12 +99,10 @@ pair<QuadEdge*, QuadEdge*> rec(IT l, IT r) { } vector<pt> delaunay(vector<pt> pts) { - if (sz(pts) <= 2) return {}; - sort(all(pts), [](const pt& a, const pt& b) { - if (real(a) != real(b)) return real(a) < real(b); - return imag(a) < imag(b); - }); - QuadEdge* r = rec(all(pts)).first; + if (ssize(pts) <= 2) return {}; + ranges::sort(pts, {}, + [](pt x) { return pair{real(x), imag(x)}; }); + QuadEdge* r = rec(begin(pts), end(pts)).first; vector<QuadEdge*> edges = {r}; while (cross(r->onext->dest(), r->dest(), r->orig) < 0) r = r->onext; auto add = [&](QuadEdge* e){ @@ -118,7 +116,7 @@ vector<pt> delaunay(vector<pt> pts) { }; add(r); pts.clear(); - for (int i = 0; i < sz(edges); i++) { + for (int i = 0; i < ssize(edges); i++) { if (!edges[i]->used) add(edges[i]); } return pts; |