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FIX: tree support crashes when there is no overhang

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Default infill pattern is lightning now, which has
a crash bug when no overhang is provided.

Change-Id: I1e70b8458d1eef670a78d698c68b21d7f48bc3eb
(cherry picked from commit 777af3aa1dbb9869209945f3a6dbcc07cba0b84a)
This commit is contained in:
Arthur 2022-11-30 12:15:40 +08:00 • committed by Lane.Wei
parent ec66e7750f
commit 65766ba30a
3 changed files with 9 additions and 5 deletions
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10
src/libslic3r/TreeSupport.cpp
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@ -821,8 +821,7 @@ void TreeSupport::detect_object_overhangs()
region2clusterInd.emplace(&region, regionClusters.size() - 1);
}
};
has_sharp_tail = false;
// main part of sharptail detections
if (std::set<SupportType>{stTreeAuto, stHybridAuto, stTree}.count(stype))// == stTreeAuto || stype == stHybridAuto || stype == stTree)
{
double threshold_rad = (config.support_threshold_angle.value < EPSILON ? 30 : config.support_threshold_angle.value+1) * M_PI / 180.;
@ -902,7 +901,6 @@ void TreeSupport::detect_object_overhangs()
overhangs_sharp_tail = diff_ex(overhangs_sharp_tail, overhang_areas);
}
if (!overhangs_sharp_tail.empty()) {
has_sharp_tail = true;
append(layer->sharp_tails, overhangs_sharp_tail);
overhang_areas = union_ex(overhang_areas, overhangs_sharp_tail);
}
@ -971,7 +969,6 @@ void TreeSupport::detect_object_overhangs()
} while (0);
if (is_sharp_tail) {
has_sharp_tail = true;
ExPolygons overhang = diff_ex({expoly}, lower_layer->lslices);
layer->sharp_tails.push_back(expoly);
layer->sharp_tails_height.insert({ &expoly, accum_height });
@ -1136,6 +1133,7 @@ void TreeSupport::detect_object_overhangs()
}
}
has_overhangs = false;
for (int layer_nr = 0; layer_nr < m_object->layer_count(); layer_nr++) {
if (m_object->print()->canceled())
break;
@ -1171,6 +1169,8 @@ void TreeSupport::detect_object_overhangs()
ts_layer->overhang_types.emplace(&ts_layer->overhang_areas.back(), TreeSupportLayer::Enforced);
}
}
if (!ts_layer->overhang_areas.empty()) has_overhangs = true;
}
#ifdef SUPPORT_TREE_DEBUG_TO_SVG
@ -1893,6 +1893,8 @@ void TreeSupport::generate_support_areas()
detect_object_overhangs();
profiler.stage_finish(STAGE_DETECT_OVERHANGS);
if (!has_overhangs) return;
// Generate contact points of tree support
profiler.stage_start(STAGE_GENERATE_CONTACT_NODES);
m_object->print()->set_status(56, _L("Support: generate contact points"));