diff --git a/xs/src/libslic3r/Format/3mf.cpp b/xs/src/libslic3r/Format/3mf.cpp index dde64a28f6..0467962c3d 100644 --- a/xs/src/libslic3r/Format/3mf.cpp +++ b/xs/src/libslic3r/Format/3mf.cpp @@ -16,6 +16,12 @@ #include #include +// VERSION NUMBERS +// 0 : .3mf, files saved by older slic3r or other applications. No version definition in them. +// 1 : Introduction of 3mf versioning. No other change in data saved into 3mf files. +const unsigned int VERSION_3MF = 1; +const char* SLIC3RPE_3MF_VERSION = "slic3rpe:Version3mf"; // definition of the metadata name saved into .model file + const std::string MODEL_FOLDER = "3D/"; const std::string MODEL_EXTENSION = ".model"; const std::string MODEL_FILE = "3D/3dmodel.model"; // << this is the only format of the string which works with CURA @@ -37,9 +43,9 @@ const char* COMPONENTS_TAG = "components"; const char* COMPONENT_TAG = "component"; const char* BUILD_TAG = "build"; const char* ITEM_TAG = "item"; +const char* METADATA_TAG = "metadata"; const char* CONFIG_TAG = "config"; -const char* METADATA_TAG = "metadata"; const char* VOLUME_TAG = "volume"; const char* UNIT_ATTR = "unit"; @@ -318,6 +324,9 @@ namespace Slic3r { typedef std::map IdToGeometryMap; typedef std::map> IdToLayerHeightsProfileMap; + // Version of the 3mf file + unsigned int m_version; + XML_Parser m_xml_parser; Model* m_model; float m_unit_factor; @@ -329,6 +338,8 @@ namespace Slic3r { CurrentConfig m_curr_config; IdToMetadataMap m_objects_metadata; IdToLayerHeightsProfileMap m_layer_heights_profiles; + std::string m_curr_metadata_name; + std::string m_curr_characters; public: _3MF_Importer(); @@ -349,6 +360,7 @@ namespace Slic3r { // handlers to parse the .model file void _handle_start_model_xml_element(const char* name, const char** attributes); void _handle_end_model_xml_element(const char* name); + void _handle_model_xml_characters(const XML_Char* s, int len); // handlers to parse the MODEL_CONFIG_FILE file void _handle_start_config_xml_element(const char* name, const char** attributes); @@ -390,6 +402,9 @@ namespace Slic3r { bool _handle_start_item(const char** attributes, unsigned int num_attributes); bool _handle_end_item(); + bool _handle_start_metadata(const char** attributes, unsigned int num_attributes); + bool _handle_end_metadata(); + bool _create_object_instance(int object_id, const Matrix4x4& matrix, unsigned int recur_counter); void _apply_transform(ModelInstance& instance, const Matrix4x4& matrix); @@ -411,6 +426,7 @@ namespace Slic3r { // callbacks to parse the .model file static void XMLCALL _handle_start_model_xml_element(void* userData, const char* name, const char** attributes); static void XMLCALL _handle_end_model_xml_element(void* userData, const char* name); + static void XMLCALL _handle_model_xml_characters(void* userData, const XML_Char* s, int len); // callbacks to parse the MODEL_CONFIG_FILE file static void XMLCALL _handle_start_config_xml_element(void* userData, const char* name, const char** attributes); @@ -418,9 +434,12 @@ namespace Slic3r { }; _3MF_Importer::_3MF_Importer() - : m_xml_parser(nullptr) + : m_version(0) + , m_xml_parser(nullptr) , m_model(nullptr) , m_unit_factor(1.0f) + , m_curr_metadata_name("") + , m_curr_characters("") { } @@ -431,6 +450,7 @@ namespace Slic3r { bool _3MF_Importer::load_model_from_file(const std::string& filename, Model& model, PresetBundle& bundle) { + m_version = 0; m_model = &model; m_unit_factor = 1.0f; m_curr_object.reset(); @@ -442,6 +462,8 @@ namespace Slic3r { m_curr_config.volume_id = -1; m_objects_metadata.clear(); m_layer_heights_profiles.clear(); + m_curr_metadata_name.clear(); + m_curr_characters.clear(); clear_errors(); return _load_model_from_file(filename, model, bundle); @@ -477,6 +499,8 @@ namespace Slic3r { mz_uint num_entries = mz_zip_reader_get_num_files(&archive); mz_zip_archive_file_stat stat; + + // we first loop the entries to read from the archive the .model file only, in order to extract the version from it for (mz_uint i = 0; i < num_entries; ++i) { if (mz_zip_reader_file_stat(&archive, i, &stat)) @@ -494,7 +518,18 @@ namespace Slic3r { return false; } } - else if (boost::algorithm::iequals(name, LAYER_HEIGHTS_PROFILE_FILE)) + } + } + + // we then loop again the entries to read other files stored in the archive + for (mz_uint i = 0; i < num_entries; ++i) + { + if (mz_zip_reader_file_stat(&archive, i, &stat)) + { + std::string name(stat.m_filename); + std::replace(name.begin(), name.end(), '\\', '/'); + + if (boost::algorithm::iequals(name, LAYER_HEIGHTS_PROFILE_FILE)) { // extract slic3r lazer heights profile file _extract_layer_heights_profile_config_from_archive(archive, stat); @@ -595,6 +630,7 @@ namespace Slic3r { XML_SetUserData(m_xml_parser, (void*)this); XML_SetElementHandler(m_xml_parser, _3MF_Importer::_handle_start_model_xml_element, _3MF_Importer::_handle_end_model_xml_element); + XML_SetCharacterDataHandler(m_xml_parser, _3MF_Importer::_handle_model_xml_characters); void* parser_buffer = XML_GetBuffer(m_xml_parser, (int)stat.m_uncomp_size); if (parser_buffer == nullptr) @@ -784,6 +820,8 @@ namespace Slic3r { res = _handle_start_build(attributes, num_attributes); else if (::strcmp(ITEM_TAG, name) == 0) res = _handle_start_item(attributes, num_attributes); + else if (::strcmp(METADATA_TAG, name) == 0) + res = _handle_start_metadata(attributes, num_attributes); if (!res) _stop_xml_parser(); @@ -820,11 +858,18 @@ namespace Slic3r { res = _handle_end_build(); else if (::strcmp(ITEM_TAG, name) == 0) res = _handle_end_item(); + else if (::strcmp(METADATA_TAG, name) == 0) + res = _handle_end_metadata(); if (!res) _stop_xml_parser(); } + void _3MF_Importer::_handle_model_xml_characters(const XML_Char* s, int len) + { + m_curr_characters.append(s, len); + } + void _3MF_Importer::_handle_start_config_xml_element(const char* name, const char** attributes) { if (m_xml_parser == nullptr) @@ -1131,6 +1176,25 @@ namespace Slic3r { return true; } + bool _3MF_Importer::_handle_start_metadata(const char** attributes, unsigned int num_attributes) + { + m_curr_characters.clear(); + + std::string name = get_attribute_value_string(attributes, num_attributes, NAME_ATTR); + if (!name.empty()) + m_curr_metadata_name = name; + + return true; + } + + bool _3MF_Importer::_handle_end_metadata() + { + if (m_curr_metadata_name == SLIC3RPE_3MF_VERSION) + m_version = (unsigned int)atoi(m_curr_characters.c_str()); + + return true; + } + bool _3MF_Importer::_create_object_instance(int object_id, const Matrix4x4& matrix, unsigned int recur_counter) { static const unsigned int MAX_RECURSIONS = 10; @@ -1437,6 +1501,13 @@ namespace Slic3r { importer->_handle_end_model_xml_element(name); } + void XMLCALL _3MF_Importer::_handle_model_xml_characters(void* userData, const XML_Char* s, int len) + { + _3MF_Importer* importer = (_3MF_Importer*)userData; + if (importer != nullptr) + importer->_handle_model_xml_characters(s, len); + } + void XMLCALL _3MF_Importer::_handle_start_config_xml_element(void* userData, const char* name, const char** attributes) { _3MF_Importer* importer = (_3MF_Importer*)userData; @@ -1640,7 +1711,8 @@ namespace Slic3r { { std::stringstream stream; stream << "\n"; - stream << "<" << MODEL_TAG << " unit=\"millimeter\" xml:lang=\"en-US\" xmlns=\"http://schemas.microsoft.com/3dmanufacturing/core/2015/02\">\n"; + stream << "<" << MODEL_TAG << " unit=\"millimeter\" xml:lang=\"en-US\" xmlns=\"http://schemas.microsoft.com/3dmanufacturing/core/2015/02\" xmlns:slic3rpe=\"http://schemas.slic3r.org/3mf/2017/06\">\n"; + stream << " <" << METADATA_TAG << " name=\"" << SLIC3RPE_3MF_VERSION << "\">" << VERSION_3MF << "\n"; stream << " <" << RESOURCES_TAG << ">\n"; BuildItemsList build_items;