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Follow-up on aaaa85c1f8

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Fix of #5007 - "Reload from disk" causes objects converted to inches to revert to mm
1) Storing and reloading the "source_in_inches" source flag from AMF and 3MF
2) When converting objects with mixed "inches" volumes, do the right thing
   and do not convert those that do not need conversion.
This commit is contained in:
Vojtech Bubnik
2020-12-12 12:06:15 +01:00
parent b62a781417
commit 5605088aad
3 changed files with 70 additions and 56 deletions
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8
src/libslic3r/Model.cpp
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@@ -1060,9 +1060,11 @@ void ModelObject::convert_units(ModelObjectPtrs& new_objects, bool from_imperial
vol->source.object_idx = (int)new_objects.size();
vol->source.volume_idx = vol_idx;
// Perform conversion
if (volume_idxs.empty() ||
std::find(volume_idxs.begin(), volume_idxs.end(), vol_idx) != volume_idxs.end()) {
// Perform conversion only if the target "imperial" state is different from the current one.
// This check supports conversion of "mixed" set of volumes, each with different "imperial" state.
if (vol->source.is_converted_from_inches != from_imperial &&
(volume_idxs.empty() ||
std::find(volume_idxs.begin(), volume_idxs.end(), vol_idx) != volume_idxs.end())) {
vol->scale_geometry_after_creation(versor);
vol->set_offset(versor.cwiseProduct(volume->get_offset()));
vol->source.is_converted_from_inches = from_imperial;