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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
Download patch file Download diff file Expand all files Collapse all files

2
src/libslic3r/Fill/Lightning/Generator.cpp
View file

@ -213,6 +213,8 @@ void Generator::generateTrees(const PrintObject &print_object)
void Generator::generateTreesforSupport(std::vector<Polygons>& contours) void Generator::generateTreesforSupport(std::vector<Polygons>& contours)
{ {
if (contours.empty()) return;
m_lightning_layers.resize(contours.size()); m_lightning_layers.resize(contours.size());
bboxs.resize(contours.size()); bboxs.resize(contours.size());

10
src/libslic3r/TreeSupport.cpp
View file

@ -821,8 +821,7 @@ void TreeSupport::detect_object_overhangs()
region2clusterInd.emplace(&region, regionClusters.size() - 1); region2clusterInd.emplace(&region, regionClusters.size() - 1);
} }
}; };
// main part of sharptail detections
has_sharp_tail = false;
if (std::set<SupportType>{stTreeAuto, stHybridAuto, stTree}.count(stype))// == stTreeAuto || stype == stHybridAuto || stype == stTree) 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.; 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); overhangs_sharp_tail = diff_ex(overhangs_sharp_tail, overhang_areas);
} }
if (!overhangs_sharp_tail.empty()) { if (!overhangs_sharp_tail.empty()) {
has_sharp_tail = true;
append(layer->sharp_tails, overhangs_sharp_tail); append(layer->sharp_tails, overhangs_sharp_tail);
overhang_areas = union_ex(overhang_areas, overhangs_sharp_tail); overhang_areas = union_ex(overhang_areas, overhangs_sharp_tail);
} }
@ -971,7 +969,6 @@ void TreeSupport::detect_object_overhangs()
} while (0); } while (0);
if (is_sharp_tail) { if (is_sharp_tail) {
has_sharp_tail = true;
ExPolygons overhang = diff_ex({expoly}, lower_layer->lslices); ExPolygons overhang = diff_ex({expoly}, lower_layer->lslices);
layer->sharp_tails.push_back(expoly); layer->sharp_tails.push_back(expoly);
layer->sharp_tails_height.insert({ &expoly, accum_height }); 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++) { for (int layer_nr = 0; layer_nr < m_object->layer_count(); layer_nr++) {
if (m_object->print()->canceled()) if (m_object->print()->canceled())
break; break;
@ -1171,6 +1169,8 @@ void TreeSupport::detect_object_overhangs()
ts_layer->overhang_types.emplace(&ts_layer->overhang_areas.back(), TreeSupportLayer::Enforced); 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 #ifdef SUPPORT_TREE_DEBUG_TO_SVG
@ -1893,6 +1893,8 @@ void TreeSupport::generate_support_areas()
detect_object_overhangs(); detect_object_overhangs();
profiler.stage_finish(STAGE_DETECT_OVERHANGS); profiler.stage_finish(STAGE_DETECT_OVERHANGS);
if (!has_overhangs) return;
// Generate contact points of tree support // Generate contact points of tree support
profiler.stage_start(STAGE_GENERATE_CONTACT_NODES); profiler.stage_start(STAGE_GENERATE_CONTACT_NODES);
m_object->print()->set_status(56, _L("Support: generate contact points")); m_object->print()->set_status(56, _L("Support: generate contact points"));

2
src/libslic3r/TreeSupport.hpp
View file

@ -351,7 +351,7 @@ public:
int avg_node_per_layer = 0; int avg_node_per_layer = 0;
float nodes_angle = 0; float nodes_angle = 0;
bool has_sharp_tail; bool has_overhangs = false;
std::unique_ptr<FillLightning::Generator> generator; std::unique_ptr<FillLightning::Generator> generator;
std::unordered_map<double, size_t> printZ_to_lightninglayer; std::unordered_map<double, size_t> printZ_to_lightninglayer;