From a2968df04c20044be168dbd0380a4b144ac4bd6e Mon Sep 17 00:00:00 2001
From: Vojtech Bubnik <bubnikv@gmail.com>
Date: Fri, 11 Dec 2020 15:02:53 +0100
Subject: [PATCH] Merge of Fix support doesn't ignore overhangs bridge anymore
#5164
---
src/libslic3r/SupportMaterial.cpp | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/src/libslic3r/SupportMaterial.cpp b/src/libslic3r/SupportMaterial.cpp
index 0fc4eb024..1e589200e 100644
--- a/src/libslic3r/SupportMaterial.cpp
+++ b/src/libslic3r/SupportMaterial.cpp
@@ -906,13 +906,15 @@ namespace SupportMaterialInternal {
polyline.extend_start(fw);
polyline.extend_end(fw);
// Is the straight perimeter segment supported at both sides?
- for (size_t i = 0; i < lower_layer.lslices.size(); ++ i)
- if (lower_layer.lslices_bboxes[i].contains(polyline.first_point()) && lower_layer.lslices_bboxes[i].contains(polyline.last_point()) &&
- lower_layer.lslices[i].contains(polyline.first_point()) && lower_layer.lslices[i].contains(polyline.last_point())) {
- // Offset a polyline into a thick line.
- polygons_append(bridges, offset(polyline, 0.5f * w + 10.f));
- break;
- }
+ Point pts[2] = { polyline.first_point(), polyline.last_point() };
+ bool supported[2] = { false, false };
+ for (size_t i = 0; i < lower_layer.lslices.size() && ! supported[0] && ! supported[1]; ++ i)
+ for (int j = 0; j < 2; ++ j)
+ if (! supported[j] && lower_layer.lslices_bboxes[i].contains(pts[j]) && lower_layer.lslices[i].contains(pts[j]))
+ supported[j] = true;
+ if (supported[0] && supported[1])
+ // Offset a polyline into a thick line.
+ polygons_append(bridges, offset(polyline, 0.5f * w + 10.f));
}
bridges = union_(bridges);
}