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Eliminate some race conditions in sla support tree

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This commit is contained in:
tamasmeszaros 2019-10-03 12:20:02 +02:00
parent 95e22d8fd4
commit 23a7e77a81
3 changed files with 53 additions and 50 deletions
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49
src/libslic3r/SLA/SLASupportTreeBuilder.hpp
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@ -208,11 +208,6 @@ struct Bridge {
const Vec3d &j2,
double r_mm = 0.8,
size_t steps = 45);
Bridge(const Head &h,
const Vec3d &j2,
size_t steps = 45)
: Bridge{h.junction_point(), j2, h.r_back_mm, steps} {}
};
// A bridge that spans from model surface to model surface with small connecting
@ -310,12 +305,12 @@ public:
return m_heads.back();
}
template<class...Args> Pillar& add_pillar(unsigned headid, Args&&... args)
template<class...Args> long add_pillar(long headid, Args&&... args)
{
std::lock_guard<Mutex> lk(m_mutex);
assert(headid < m_head_indices.size());
Head &head = m_heads[m_head_indices[headid]];
assert(headid >= 0 && headid < m_head_indices.size());
Head &head = m_heads[m_head_indices[size_t(headid)]];
m_pillars.emplace_back(head, std::forward<Args>(args)...);
Pillar& pillar = m_pillars.back();
@ -325,7 +320,14 @@ public:
pillar.starts_from_head = true;
m_meshcache_valid = false;
return m_pillars.back();
return pillar.id;
}
void add_pillar_base(long pid, double baseheight = 3, double radius = 2)
{
std::lock_guard<Mutex> lk(m_mutex);
assert(pid >= 0 && pid < m_pillars.size());
m_pillars[size_t(pid)].add_base(baseheight, radius);
}
void increment_bridges(const Pillar& pillar)
@ -352,7 +354,7 @@ public:
return pillar.bridges;
}
template<class...Args> Pillar& add_pillar(Args&&...args)
template<class...Args> long add_pillar(Args&&...args)
{
std::lock_guard<Mutex> lk(m_mutex);
m_pillars.emplace_back(std::forward<Args>(args)...);
@ -360,7 +362,7 @@ public:
pillar.id = long(m_pillars.size() - 1);
pillar.starts_from_head = false;
m_meshcache_valid = false;
return m_pillars.back();
return pillar.id;
}
const Pillar& head_pillar(unsigned headid) const
@ -383,21 +385,21 @@ public:
return m_junctions.back();
}
template<class...Args> const Bridge&
add_bridge(const Vec3d &sp, const Vec3d &ep, double r, size_t steps = 45)
const Bridge& add_bridge(const Vec3d &s, const Vec3d &e, double r, size_t n = 45)
{
return _add_bridge(m_bridges, sp, ep, r, steps);
return _add_bridge(m_bridges, s, e, r, n);
}
template<class...Args>
const Bridge& add_bridge(const Head &h, const Vec3d &endp, size_t steps = 45)
const Bridge& add_bridge(long headid, const Vec3d &endp, size_t s = 45)
{
std::lock_guard<Mutex> lk(m_mutex);
m_bridges.emplace_back(h, endp, steps);
assert(headid >= 0 && headid < m_head_indices.size());
Head &h = m_heads[m_head_indices[size_t(headid)]];
m_bridges.emplace_back(h.junction_point(), endp, h.r_back_mm, s);
m_bridges.back().id = long(m_bridges.size() - 1);
assert(h.id >= 0 && h.id < m_head_indices.size());
m_heads[m_head_indices[size_t(h.id)]].bridge_id = m_bridges.back().id;
h.bridge_id = m_bridges.back().id;
m_meshcache_valid = false;
return m_bridges.back();
}
@ -444,6 +446,15 @@ public:
return m_pillars[size_t(id)];
}
template<class T> inline IntegerOnly<T, Pillar&> pillar(T id)
{
std::lock_guard<Mutex> lk(m_mutex);
assert(id >= 0 && size_t(id) < m_pillars.size() &&
size_t(id) < std::numeric_limits<size_t>::max());
return m_pillars[size_t(id)];
}
const Pad& pad() const { return m_pad; }
// WITHOUT THE PAD!!!

42
src/libslic3r/SLA/SLASupportTreeBuildsteps.cpp
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@ -508,15 +508,14 @@ bool SupportTreeBuildsteps::connect_to_nearpillar(const Head &head,
if (m_builder.bridgecount(nearpillar()) < m_cfg.max_bridges_on_pillar) {
// A partial pillar is needed under the starting head.
if(zdiff > 0) {
m_builder.add_pillar(unsigned(head.id), bridgestart, r);
m_builder.add_pillar(head.id, bridgestart, r);
m_builder.add_junction(bridgestart, r);
m_builder.add_bridge(bridgestart, bridgeend, head.r_back_mm);
} else {
m_builder.add_bridge(head.id, bridgeend);
}
auto &br = m_builder.add_bridge(bridgestart, bridgeend, r);
m_builder.increment_bridges(nearpillar());
if (head.pillar_id == ID_UNSET)
m_builder.head(unsigned(head.id)).bridge_id = br.id;
} else return false;
return true;
@ -631,13 +630,11 @@ void SupportTreeBuildsteps::create_ground_pillar(const Vec3d &jp,
auto hit = bridge_mesh_intersect(endp, DOWN, radius);
if (!std::isinf(hit.distance())) abort_in_shame();
Pillar &plr = m_builder.add_pillar(endp, pgnd, radius);
pillar_id = m_builder.add_pillar(endp, pgnd, radius);
if (can_add_base)
plr.add_base(m_cfg.base_height_mm,
m_cfg.base_radius_mm);
pillar_id = plr.id;
m_builder.add_pillar_base(pillar_id, m_cfg.base_height_mm,
m_cfg.base_radius_mm);
}
m_builder.add_bridge(jp, endp, radius);
@ -648,19 +645,17 @@ void SupportTreeBuildsteps::create_ground_pillar(const Vec3d &jp,
// prevent from queries of head_pillar() to have non-existing
// pillar when the head should have one.
if (head_id >= 0)
m_builder.add_pillar(unsigned(head_id), jp, radius);
m_builder.add_pillar(head_id, jp, radius);
}
}
if (normal_mode) {
Pillar &plr = head_id >= 0
? m_builder.add_pillar(unsigned(head_id), endp, radius)
: m_builder.add_pillar(jp, endp, radius);
pillar_id = head_id >= 0 ? m_builder.add_pillar(head_id, endp, radius) :
m_builder.add_pillar(jp, endp, radius);
if (can_add_base)
plr.add_base(m_cfg.base_height_mm, m_cfg.base_radius_mm);
pillar_id = plr.id;
m_builder.add_pillar_base(pillar_id, m_cfg.base_height_mm,
m_cfg.base_radius_mm);
}
if(pillar_id >= 0) // Save the pillar endpoint in the spatial index
@ -872,9 +867,7 @@ void SupportTreeBuildsteps::classify()
&& d3d < m_cfg.max_bridge_length_mm;
};
m_pillar_clusters = cluster(ground_head_indices,
pointfn,
predicate,
m_pillar_clusters = cluster(ground_head_indices, pointfn, predicate,
m_cfg.max_bridges_on_pillar);
}
@ -965,7 +958,7 @@ void SupportTreeBuildsteps::routing_to_model()
{
head.transform();
Vec3d endp = head.junction_point() + dist * dir;
m_builder.add_bridge(head, endp);
m_builder.add_bridge(head.id, endp);
m_builder.add_junction(endp, head.r_back_mm);
this->create_ground_pillar(endp, dir, head.r_back_mm);
@ -1097,9 +1090,8 @@ void SupportTreeBuildsteps::routing_to_model()
head.transform();
Pillar& pill = m_builder.add_pillar(unsigned(head.id),
endp,
head.r_back_mm);
long pillar_id = m_builder.add_pillar(head.id, endp, head.r_back_mm);
Pillar &pill = m_builder.pillar(pillar_id);
Vec3d taildir = endp - hitp;
double dist = distance(endp, hitp) + m_cfg.head_penetration_mm;
@ -1310,7 +1302,7 @@ void SupportTreeBuildsteps::interconnect_pillars()
p.add_base(m_cfg.base_height_mm, m_cfg.base_radius_mm);
if (interconnect(pillar(), p)) {
Pillar &pp = m_builder.add_pillar(p);
Pillar &pp = m_builder.pillar(m_builder.add_pillar(p));
m_pillar_index.insert(pp.endpoint(), unsigned(pp.id));
m_builder.add_junction(s, pillar().r);

4
tests/sla_print/sla_print_tests_main.cpp
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@ -250,7 +250,7 @@ void test_support_model_collision(
// Set head penetration to a small negative value which should ensure that
// the supports will not touch the model body.
supportcfg.head_penetration_mm = -0.1;
supportcfg.head_penetration_mm = -input_supportcfg.head_front_radius_mm;
test_supports(obj_filename, supportcfg, byproducts);
@ -286,7 +286,7 @@ const char * const AROUND_PAD_TEST_OBJECTS[] = {
};
const char *const SUPPORT_TEST_MODELS[] = {
"cube_with_concave_hole_enlarged_standing.obj",
"cube_with_concave_hole_enlarged_standing.obj"
};
} // namespace