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Prevent writing empty materials to AMF files. Also add a note about material-id = 0 being reserved by AMF spec. #2871

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This commit is contained in:
Alessandro Ranellucci 2015-06-01 11:50:08 +02:00
parent e26022a2f2
commit fbea32a81c
2 changed files with 4 additions and 1 deletions
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3
xs/src/libslic3r/Model.cpp
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@ -690,7 +690,8 @@ ModelVolume::assign_unique_material()
{
Model* model = this->get_object()->get_model();
this->_material_id = 1 + model->materials.size();
// as material-id "0" is reserved by the AMF spec we start from 1
this->_material_id = 1 + model->materials.size(); // watchout for implicit cast
return model->add_material(this->_material_id);
}