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FIX: hybrid tree support crash in some case

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jira: STUDIO-8313
Change-Id: Ide03d8f666232f457305f3dd298bf8151ba9c57b
(cherry picked from commit 35bf682f7938ea6ddfa9525249c6a4cbb1f16071)
This commit is contained in:
Arthur
2024-09-29 19:22:21 +08:00
committed by Noisyfox
parent e6880a468b
commit 36970dd9a2
1 changed files with 4 additions and 1 deletions
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3
src/libslic3r/Support/TreeSupport.cpp
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@@ -3474,6 +3474,9 @@ const ExPolygons& TreeSupportData::calculate_avoidance(const RadiusLayerPair& ke
const auto &radius = key.radius; const auto &radius = key.radius;
const auto &layer_nr = key.layer_nr; const auto &layer_nr = key.layer_nr;
if (layer_nr == 0) { if (layer_nr == 0) {
// avoid ExPolygons:~ExPolygons() in multi-threading case, as it's not thread-safe and may
// cause crash in some cases. See STUDIO-8313.
if (m_avoidance_cache.find(key) == m_avoidance_cache.end())
m_avoidance_cache[key] = get_collision(radius, 0); m_avoidance_cache[key] = get_collision(radius, 0);
return m_avoidance_cache[key]; return m_avoidance_cache[key];
} }