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Empty layers detection added to GCode.cpp

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Added detection of empty layers so the wipe tower doesn't trip on them (it is not printable anyway).
This should improve wipe tower reliability with supports, objects standing on edges, etc.
I also turned an assert into exception throw to prevent hard crashes and nonsense output.
This commit is contained in:
Lukas Matena
2019-08-02 16:49:22 +02:00
parent ff17ddd8c5
commit d0c9c28494
2 changed files with 25 additions and 3 deletions
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10
src/libslic3r/GCode/ToolOrdering.cpp
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@@ -78,8 +78,13 @@ ToolOrdering::ToolOrdering(const Print &print, unsigned int first_extruder, bool
zs.emplace_back(layer->print_z);
for (auto layer : object->support_layers())
zs.emplace_back(layer->print_z);
if (! object->layers().empty())
object_bottom_z = object->layers().front()->print_z - object->layers().front()->height;
// Find first object layer that is not empty and save its print_z
for (const Layer* layer : object->layers())
if (layer->has_extrusions()) {
object_bottom_z = layer->print_z - layer->height;
break;
}
}
this->initialize_layers(zs);
}
@@ -324,6 +329,7 @@ void ToolOrdering::fill_wipe_tower_partitions(const PrintConfig &config, coordf_
m_layer_tools[j].has_wipe_tower = true;
} else {
LayerTools &lt_extra = *m_layer_tools.insert(m_layer_tools.begin() + j, lt_new);
//LayerTools &lt_prev = m_layer_tools[j];
LayerTools &lt_next = m_layer_tools[j + 1];
assert(! m_layer_tools[j - 1].extruders.empty() && ! lt_next.extruders.empty());
// FIXME: Following assert tripped when running combine_infill.t. I decided to comment it out for now.