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Fix of #4060 - Add check for the case that all ranges of a volume do not contain any Z.

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This commit is contained in:
Lukáš Hejl 2020-12-09 07:28:18 +01:00
parent 0ad135ff93
commit bb2eecb42c
1 changed files with 5 additions and 3 deletions
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8
src/libslic3r/PrintObject.cpp
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@ -2014,7 +2014,7 @@ std::vector<ExPolygons> PrintObject::slice_region(size_t region_id, const std::v
return this->slice_volumes(z, mode, volumes);
}
// Z ranges are not applicable to modifier meshes, therefore a sinle volume will be found in volume_and_range at most once.
// Z ranges are not applicable to modifier meshes, therefore a single volume will be found in volume_and_range at most once.
std::vector<ExPolygons> PrintObject::slice_modifiers(size_t region_id, const std::vector<float> &slice_zs) const
{
std::vector<ExPolygons> out;
@ -2080,10 +2080,12 @@ std::vector<ExPolygons> PrintObject::slice_modifiers(size_t region_id, const std
ranges.emplace_back(volumes_and_ranges[j].first);
// slicing in parallel
std::vector<ExPolygons> this_slices = this->slice_volume(slice_zs, ranges, SlicingMode::Regular, *model_volume);
// Variable this_slices could be empty if no value of slice_zs is within any of the ranges of this volume.
if (out.empty()) {
out = std::move(this_slices);
merge.assign(out.size(), false);
} else {
} else if (!this_slices.empty()) {
assert(out.size() == this_slices.size());
for (size_t i = 0; i < out.size(); ++ i)
if (! this_slices[i].empty()) {
if (! out[i].empty()) {
@ -2188,7 +2190,7 @@ std::vector<ExPolygons> PrintObject::slice_volume(const std::vector<float> &z, S
return layers;
}
// Filter the zs not inside the ranges. The ranges are closed at the botton and open at the top, they are sorted lexicographically and non overlapping.
// Filter the zs not inside the ranges. The ranges are closed at the bottom and open at the top, they are sorted lexicographically and non overlapping.
std::vector<ExPolygons> PrintObject::slice_volume(const std::vector<float> &z, const std::vector<t_layer_height_range> &ranges, SlicingMode mode, const ModelVolume &volume) const
{
std::vector<ExPolygons> out;