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FIX: tree support crashes when lower_layer is null

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Change-Id: I942bdf1dfc253be5ebf659274f230290c5260d63
(cherry picked from commit 05b033cd0dfacadab9ea3e725e364a6156d068f2)
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Arthur 2023-04-03 18:04:03 +08:00 • committed by Lane.Wei
parent fa1be64652
commit 74d558e612
1 changed files with 1 additions and 1 deletions
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src/libslic3r/TreeSupport.cpp
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@ -1146,7 +1146,7 @@ void TreeSupport::detect_overhangs(bool detect_first_sharp_tail_only)
ts_layer->overhang_areas = diff_ex(ts_layer->overhang_areas, offset_ex(blocker, scale_(radius_sample_resolution)));
}
if (max_bridge_length > 0 && ts_layer->overhang_areas.size() > 0) {
if (max_bridge_length > 0 && ts_layer->overhang_areas.size() > 0 && lower_layer) {
// do not break bridge for normal part in TreeHybrid
bool break_bridge = !(support_style == smsTreeHybrid && area(ts_layer->overhang_areas) > m_support_params.thresh_big_overhang);
m_object->remove_bridges_from_contacts(lower_layer, layer, extrusion_width_scaled, &ts_layer->overhang_areas, max_bridge_length, break_bridge);