From 5597eceece91a3e9cc5ca14f7f47424c0aff6b7e Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@klayout.de>
Date: Thu, 7 Mar 2024 23:03:30 +0100
Subject: [PATCH] Region#edges: Don't include an polygon to edge processor
 unless required

---
 src/db/db/gsiDeclDbRegion.cc | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/db/db/gsiDeclDbRegion.cc b/src/db/db/gsiDeclDbRegion.cc
index 2e16558ed..700cd2162 100644
--- a/src/db/db/gsiDeclDbRegion.cc
+++ b/src/db/db/gsiDeclDbRegion.cc
@@ -783,8 +783,13 @@ size_dvm (db::Region *region, const db::Vector &dv, unsigned int mode)
 static db::Edges
 edges (const db::Region *region, db::PolygonToEdgeProcessor::EdgeMode mode)
 {
-  db::PolygonToEdgeProcessor proc (mode);
-  return region->edges (proc);
+  if (mode != db::PolygonToEdgeProcessor::All) {
+    db::PolygonToEdgeProcessor proc (mode);
+    return region->edges (proc);
+  } else {
+    //  this version is more efficient in the hierarchical case
+    return region->edges ();
+  }
 }
 
 static db::Point default_origin;