3DPrinting/PrusaSlicer-NonPlainar
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Workaround for the Prusa3D Fast (layer height 0.35mm) profile, which

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collides with the maximum allowed layer height at the Printer Extruder
0.25mm.

Works around "MMU2s and supports on prusaslicer 2.2.0 issue #3919"
This commit is contained in:
bubnikv 2020-03-27 14:15:09 +01:00
parent 58192ba6c2
commit ec86d94f02
2 changed files with 51 additions and 18 deletions
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67
src/libslic3r/GCode/ToolOrdering.cpp
View File

@ -94,7 +94,7 @@ ToolOrdering::ToolOrdering(const PrintObject &object, unsigned int first_extrude
// Reorder the extruders to minimize tool switches.
this->reorder_extruders(first_extruder);
this->fill_wipe_tower_partitions(object.print()->config(), object.layers().front()->print_z - object.layers().front()->height);
this->fill_wipe_tower_partitions(object.print()->config(), object.layers().front()->print_z - object.layers().front()->height, object.config().layer_height);
this->collect_extruder_statistics(prime_multi_material);
}
@ -107,6 +107,7 @@ ToolOrdering::ToolOrdering(const Print &print, unsigned int first_extruder, bool
// Initialize the print layers for all objects and all layers.
coordf_t object_bottom_z = 0.;
coordf_t max_layer_height = 0.;
{
std::vector<coordf_t> zs;
for (auto object : print.objects()) {
@ -122,6 +123,8 @@ ToolOrdering::ToolOrdering(const Print &print, unsigned int first_extruder, bool
object_bottom_z = layer->print_z - layer->height;
break;
}
max_layer_height = std::max(max_layer_height, object->config().layer_height.value);
}
this->initialize_layers(zs);
}
@ -144,7 +147,7 @@ ToolOrdering::ToolOrdering(const Print &print, unsigned int first_extruder, bool
// Reorder the extruders to minimize tool switches.
this->reorder_extruders(first_extruder);
this->fill_wipe_tower_partitions(print.config(), object_bottom_z);
this->fill_wipe_tower_partitions(print.config(), object_bottom_z, max_layer_height);
this->collect_extruder_statistics(prime_multi_material);
}
@ -318,7 +321,7 @@ void ToolOrdering::reorder_extruders(unsigned int last_extruder_id)
}
}
void ToolOrdering::fill_wipe_tower_partitions(const PrintConfig &config, coordf_t object_bottom_z)
void ToolOrdering::fill_wipe_tower_partitions(const PrintConfig &config, coordf_t object_bottom_z, coordf_t max_object_layer_height)
{
if (m_layer_tools.empty())
return;
@ -351,6 +354,10 @@ void ToolOrdering::fill_wipe_tower_partitions(const PrintConfig &config, coordf_
mlh = 0.75 * config.nozzle_diameter.values[i];
max_layer_height = std::min(max_layer_height, mlh);
}
// The Prusa3D Fast (0.35mm layer height) print profile sets a higher layer height than what is normally allowed
// by the nozzle. This is a hack and it works by increasing extrusion width.
max_layer_height = std::max(max_layer_height, max_object_layer_height);
for (size_t i = 0; i + 1 < m_layer_tools.size(); ++ i) {
const LayerTools &lt = m_layer_tools[i];
const LayerTools &lt_next = m_layer_tools[i + 1];
@ -393,21 +400,47 @@ void ToolOrdering::fill_wipe_tower_partitions(const PrintConfig &config, coordf_
// and maybe other problems. We will therefore go through layer_tools and detect and fix this.
// So, if there is a non-object layer starting with different extruder than the last one ended with (or containing more than one extruder),
// we'll mark it with has_wipe tower.
for (unsigned int i=0; i+1<m_layer_tools.size(); ++i) {
LayerTools& lt = m_layer_tools[i];
LayerTools& lt_next = m_layer_tools[i+1];
if (lt.extruders.empty() || lt_next.extruders.empty())
break;
if (!lt_next.has_wipe_tower && (lt_next.extruders.front() != lt.extruders.back() || lt_next.extruders.size() > 1))
lt_next.has_wipe_tower = true;
// We should also check that the next wipe tower layer is no further than max_layer_height:
unsigned int j = i+1;
double last_wipe_tower_print_z = lt_next.print_z;
while (++j < m_layer_tools.size()-1 && !m_layer_tools[j].has_wipe_tower)
if (m_layer_tools[j+1].print_z - last_wipe_tower_print_z > max_layer_height) {
m_layer_tools[j].has_wipe_tower = true;
last_wipe_tower_print_z = m_layer_tools[j].print_z;
assert(! m_layer_tools.empty() && m_layer_tools.front().has_wipe_tower);
if (! m_layer_tools.empty() && m_layer_tools.front().has_wipe_tower) {
for (size_t i = 0; i + 1 < m_layer_tools.size();) {
const LayerTools &lt = m_layer_tools[i];
assert(lt.has_wipe_tower);
assert(! lt.extruders.empty());
// Find the next layer with wipe tower or mark a layer as such.
size_t j = i + 1;
for (; j < m_layer_tools.size() && ! m_layer_tools[j].has_wipe_tower; ++ j) {
LayerTools &lt_next = m_layer_tools[j];
if (lt_next.extruders.empty()) {
//FIXME Vojtech: Lukasi, proc?
j = m_layer_tools.size();
break;
}
if (lt_next.extruders.front() != lt.extruders.back() || lt_next.extruders.size() > 1) {
// Support only layer, soluble layers? Otherwise the layer should have been already marked as having wipe tower.
assert(lt_next.has_support && ! lt_next.has_object);
lt_next.has_wipe_tower = true;
break;
}
}
if (j == m_layer_tools.size())
// No wipe tower above layer i, therefore no need to add any wipe tower layer above i.
break;
// We should also check that the next wipe tower layer is no further than max_layer_height.
// This algorith may in theory create very thin wipe layer j if layer closely below j is marked as wipe tower.
// This may happen if printing with non-soluble break away supports.
// On the other side it should not hurt as there will be no wipe, just perimeter and sparse infill printed
// at that particular wipe tower layer without extruder change.
double last_wipe_tower_print_z = lt.print_z;
assert(m_layer_tools[j].has_wipe_tower);
for (size_t k = i + 1; k < j; ++k) {
assert(! m_layer_tools[k].has_wipe_tower);
if (m_layer_tools[k + 1].print_z - last_wipe_tower_print_z > max_layer_height + EPSILON) {
m_layer_tools[k].has_wipe_tower = true;
last_wipe_tower_print_z = m_layer_tools[k].print_z;
}
}
i = j;
}
}
// Calculate the wipe_tower_layer_height values.

2
src/libslic3r/GCode/ToolOrdering.hpp
View File

@ -166,7 +166,7 @@ private:
void initialize_layers(std::vector<coordf_t> &zs);
void collect_extruders(const PrintObject &object, const std::vector<std::pair<double, unsigned int>> &per_layer_extruder_switches);
void reorder_extruders(unsigned int last_extruder_id);
void fill_wipe_tower_partitions(const PrintConfig &config, coordf_t object_bottom_z);
void fill_wipe_tower_partitions(const PrintConfig &config, coordf_t object_bottom_z, coordf_t max_layer_height);
void collect_extruder_statistics(bool prime_multi_material);
std::vector<LayerTools> m_layer_tools;