diff options
Diffstat (limited to 'src/libslic3r/Format/3mf.cpp')
| -rw-r--r-- | src/libslic3r/Format/3mf.cpp | 2022 |
1 files changed, 2022 insertions, 0 deletions
diff --git a/src/libslic3r/Format/3mf.cpp b/src/libslic3r/Format/3mf.cpp new file mode 100644 index 000000000..43c99f19f --- /dev/null +++ b/src/libslic3r/Format/3mf.cpp @@ -0,0 +1,2022 @@ +#include "../libslic3r.h" +#include "../Model.hpp" +#include "../Utils.hpp" +#include "../GCode.hpp" +#include "../slic3r/GUI/PresetBundle.hpp" + +#include "3mf.hpp" + +#include <boost/algorithm/string/classification.hpp> +#include <boost/algorithm/string/split.hpp> +#include <boost/algorithm/string/predicate.hpp> +#include <boost/filesystem/operations.hpp> +#include <boost/nowide/fstream.hpp> + +#include <expat.h> +#include <Eigen/Dense> +#include <miniz/miniz_zip.h> + +// 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 +const std::string CONTENT_TYPES_FILE = "[Content_Types].xml"; +const std::string RELATIONSHIPS_FILE = "_rels/.rels"; +const std::string PRINT_CONFIG_FILE = "Metadata/Slic3r_PE.config"; +const std::string MODEL_CONFIG_FILE = "Metadata/Slic3r_PE_model.config"; +const std::string LAYER_HEIGHTS_PROFILE_FILE = "Metadata/Slic3r_PE_layer_heights_profile.txt"; + +const char* MODEL_TAG = "model"; +const char* RESOURCES_TAG = "resources"; +const char* OBJECT_TAG = "object"; +const char* MESH_TAG = "mesh"; +const char* VERTICES_TAG = "vertices"; +const char* VERTEX_TAG = "vertex"; +const char* TRIANGLES_TAG = "triangles"; +const char* TRIANGLE_TAG = "triangle"; +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* VOLUME_TAG = "volume"; + +const char* UNIT_ATTR = "unit"; +const char* NAME_ATTR = "name"; +const char* TYPE_ATTR = "type"; +const char* ID_ATTR = "id"; +const char* X_ATTR = "x"; +const char* Y_ATTR = "y"; +const char* Z_ATTR = "z"; +const char* V1_ATTR = "v1"; +const char* V2_ATTR = "v2"; +const char* V3_ATTR = "v3"; +const char* OBJECTID_ATTR = "objectid"; +const char* TRANSFORM_ATTR = "transform"; + +const char* KEY_ATTR = "key"; +const char* VALUE_ATTR = "value"; +const char* FIRST_TRIANGLE_ID_ATTR = "firstid"; +const char* LAST_TRIANGLE_ID_ATTR = "lastid"; + +const char* OBJECT_TYPE = "object"; +const char* VOLUME_TYPE = "volume"; + +const char* NAME_KEY = "name"; +const char* MODIFIER_KEY = "modifier"; +const char* VOLUME_TYPE_KEY = "volume_type"; + +const unsigned int VALID_OBJECT_TYPES_COUNT = 1; +const char* VALID_OBJECT_TYPES[] = +{ + "model" +}; + +const unsigned int INVALID_OBJECT_TYPES_COUNT = 4; +const char* INVALID_OBJECT_TYPES[] = +{ + "solidsupport", + "support", + "surface", + "other" +}; + +const char* get_attribute_value_charptr(const char** attributes, unsigned int attributes_size, const char* attribute_key) +{ + if ((attributes == nullptr) || (attributes_size == 0) || (attributes_size % 2 != 0) || (attribute_key == nullptr)) + return nullptr; + + for (unsigned int a = 0; a < attributes_size; a += 2) + { + if (::strcmp(attributes[a], attribute_key) == 0) + return attributes[a + 1]; + } + + return nullptr; +} + +std::string get_attribute_value_string(const char** attributes, unsigned int attributes_size, const char* attribute_key) +{ + const char* text = get_attribute_value_charptr(attributes, attributes_size, attribute_key); + return (text != nullptr) ? text : ""; +} + +float get_attribute_value_float(const char** attributes, unsigned int attributes_size, const char* attribute_key) +{ + const char* text = get_attribute_value_charptr(attributes, attributes_size, attribute_key); + return (text != nullptr) ? (float)::atof(text) : 0.0f; +} + +int get_attribute_value_int(const char** attributes, unsigned int attributes_size, const char* attribute_key) +{ + const char* text = get_attribute_value_charptr(attributes, attributes_size, attribute_key); + return (text != nullptr) ? ::atoi(text) : 0; +} + +Slic3r::Transform3d get_transform_from_string(const std::string& mat_str) +{ + if (mat_str.empty()) + // empty string means default identity matrix + return Slic3r::Transform3d::Identity(); + + std::vector<std::string> mat_elements_str; + boost::split(mat_elements_str, mat_str, boost::is_any_of(" "), boost::token_compress_on); + + unsigned int size = (unsigned int)mat_elements_str.size(); + if (size != 12) + // invalid data, return identity matrix + return Slic3r::Transform3d::Identity(); + + Slic3r::Transform3d ret = Slic3r::Transform3d::Identity(); + unsigned int i = 0; + // matrices are stored into 3mf files as 4x3 + // we need to transpose them + for (unsigned int c = 0; c < 4; ++c) + { + for (unsigned int r = 0; r < 3; ++r) + { + ret(r, c) = ::atof(mat_elements_str[i++].c_str()); + } + } + return ret; +} + +float get_unit_factor(const std::string& unit) +{ + const char* text = unit.c_str(); + + if (::strcmp(text, "micron") == 0) + return 0.001f; + else if (::strcmp(text, "centimeter") == 0) + return 10.0f; + else if (::strcmp(text, "inch") == 0) + return 25.4f; + else if (::strcmp(text, "foot") == 0) + return 304.8f; + else if (::strcmp(text, "meter") == 0) + return 1000.0f; + else + // default "millimeters" (see specification) + return 1.0f; +} + +bool is_valid_object_type(const std::string& type) +{ + // if the type is empty defaults to "model" (see specification) + if (type.empty()) + return true; + + for (unsigned int i = 0; i < VALID_OBJECT_TYPES_COUNT; ++i) + { + if (::strcmp(type.c_str(), VALID_OBJECT_TYPES[i]) == 0) + return true; + } + + return false; +} + +namespace Slic3r { + + // Base class with error messages management + class _3MF_Base + { + std::vector<std::string> m_errors; + + protected: + void add_error(const std::string& error) { m_errors.push_back(error); } + void clear_errors() { m_errors.clear(); } + + public: + void log_errors() + { + for (const std::string& error : m_errors) + { + printf("%s\n", error.c_str()); + } + } + }; + + class _3MF_Importer : public _3MF_Base + { + struct Component + { + int object_id; + Transform3d transform; + + explicit Component(int object_id) + : object_id(object_id) + , transform(Transform3d::Identity()) + { + } + + Component(int object_id, const Transform3d& transform) + : object_id(object_id) + , transform(transform) + { + } + }; + + typedef std::vector<Component> ComponentsList; + + struct Geometry + { + std::vector<float> vertices; + std::vector<unsigned int> triangles; + + bool empty() + { + return vertices.empty() || triangles.empty(); + } + + void reset() + { + vertices.clear(); + triangles.clear(); + } + }; + + struct CurrentObject + { + int id; + Geometry geometry; + ModelObject* object; + ComponentsList components; + + CurrentObject() + { + reset(); + } + + void reset() + { + id = -1; + geometry.reset(); + object = nullptr; + components.clear(); + } + }; + + struct CurrentConfig + { + int object_id; + int volume_id; + }; + + struct Instance + { + ModelInstance* instance; + Transform3d transform; + + Instance(ModelInstance* instance, const Transform3d& transform) + : instance(instance) + , transform(transform) + { + } + }; + + struct Metadata + { + std::string key; + std::string value; + + Metadata(const std::string& key, const std::string& value) + : key(key) + , value(value) + { + } + }; + + typedef std::vector<Metadata> MetadataList; + + struct ObjectMetadata + { + struct VolumeMetadata + { + unsigned int first_triangle_id; + unsigned int last_triangle_id; + MetadataList metadata; + + VolumeMetadata(unsigned int first_triangle_id, unsigned int last_triangle_id) + : first_triangle_id(first_triangle_id) + , last_triangle_id(last_triangle_id) + { + } + }; + + typedef std::vector<VolumeMetadata> VolumeMetadataList; + + MetadataList metadata; + VolumeMetadataList volumes; + }; + + typedef std::map<int, ModelObject*> IdToModelObjectMap; + typedef std::map<int, ComponentsList> IdToAliasesMap; + typedef std::vector<Instance> InstancesList; + typedef std::map<int, ObjectMetadata> IdToMetadataMap; + typedef std::map<int, Geometry> IdToGeometryMap; + typedef std::map<int, std::vector<coordf_t>> IdToLayerHeightsProfileMap; + + // Version of the 3mf file + unsigned int m_version; + + XML_Parser m_xml_parser; + Model* m_model; + float m_unit_factor; + CurrentObject m_curr_object; + IdToModelObjectMap m_objects; + IdToAliasesMap m_objects_aliases; + InstancesList m_instances; + IdToGeometryMap m_geometries; + 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(); + ~_3MF_Importer(); + + bool load_model_from_file(const std::string& filename, Model& model, PresetBundle& bundle); + + private: + void _destroy_xml_parser(); + void _stop_xml_parser(); + + bool _load_model_from_file(const std::string& filename, Model& model, PresetBundle& bundle); + bool _extract_model_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat); + void _extract_layer_heights_profile_config_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat); + void _extract_print_config_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat, PresetBundle& bundle, const std::string& archive_filename); + bool _extract_model_config_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat, Model& model); + + // 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); + void _handle_end_config_xml_element(const char* name); + + bool _handle_start_model(const char** attributes, unsigned int num_attributes); + bool _handle_end_model(); + + bool _handle_start_resources(const char** attributes, unsigned int num_attributes); + bool _handle_end_resources(); + + bool _handle_start_object(const char** attributes, unsigned int num_attributes); + bool _handle_end_object(); + + bool _handle_start_mesh(const char** attributes, unsigned int num_attributes); + bool _handle_end_mesh(); + + bool _handle_start_vertices(const char** attributes, unsigned int num_attributes); + bool _handle_end_vertices(); + + bool _handle_start_vertex(const char** attributes, unsigned int num_attributes); + bool _handle_end_vertex(); + + bool _handle_start_triangles(const char** attributes, unsigned int num_attributes); + bool _handle_end_triangles(); + + bool _handle_start_triangle(const char** attributes, unsigned int num_attributes); + bool _handle_end_triangle(); + + bool _handle_start_components(const char** attributes, unsigned int num_attributes); + bool _handle_end_components(); + + bool _handle_start_component(const char** attributes, unsigned int num_attributes); + bool _handle_end_component(); + + bool _handle_start_build(const char** attributes, unsigned int num_attributes); + bool _handle_end_build(); + + 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 Transform3d& transform, unsigned int recur_counter); + + void _apply_transform(ModelInstance& instance, const Transform3d& transform); + + bool _handle_start_config(const char** attributes, unsigned int num_attributes); + bool _handle_end_config(); + + bool _handle_start_config_object(const char** attributes, unsigned int num_attributes); + bool _handle_end_config_object(); + + bool _handle_start_config_volume(const char** attributes, unsigned int num_attributes); + bool _handle_end_config_volume(); + + bool _handle_start_config_metadata(const char** attributes, unsigned int num_attributes); + bool _handle_end_config_metadata(); + + bool _generate_volumes(ModelObject& object, const Geometry& geometry, const ObjectMetadata::VolumeMetadataList& volumes); + + // 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); + static void XMLCALL _handle_end_config_xml_element(void* userData, const char* name); + }; + + _3MF_Importer::_3MF_Importer() + : m_version(0) + , m_xml_parser(nullptr) + , m_model(nullptr) + , m_unit_factor(1.0f) + , m_curr_metadata_name("") + , m_curr_characters("") + { + } + + _3MF_Importer::~_3MF_Importer() + { + _destroy_xml_parser(); + } + + 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(); + m_objects.clear(); + m_objects_aliases.clear(); + m_instances.clear(); + m_geometries.clear(); + m_curr_config.object_id = -1; + 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); + } + + void _3MF_Importer::_destroy_xml_parser() + { + if (m_xml_parser != nullptr) + { + XML_ParserFree(m_xml_parser); + m_xml_parser = nullptr; + } + } + + void _3MF_Importer::_stop_xml_parser() + { + if (m_xml_parser != nullptr) + XML_StopParser(m_xml_parser, false); + } + + bool _3MF_Importer::_load_model_from_file(const std::string& filename, Model& model, PresetBundle& bundle) + { + mz_zip_archive archive; + mz_zip_zero_struct(&archive); + + mz_bool res = mz_zip_reader_init_file(&archive, filename.c_str(), 0); + if (res == 0) + { + add_error("Unable to open the file"); + return false; + } + + 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)) + { + std::string name(stat.m_filename); + std::replace(name.begin(), name.end(), '\\', '/'); + + if (boost::algorithm::istarts_with(name, MODEL_FOLDER) && boost::algorithm::iends_with(name, MODEL_EXTENSION)) + { + // valid model name -> extract model + if (!_extract_model_from_archive(archive, stat)) + { + mz_zip_reader_end(&archive); + add_error("Archive does not contain a valid model"); + return false; + } + } + } + } + + // 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); + } + else if (boost::algorithm::iequals(name, PRINT_CONFIG_FILE)) + { + // extract slic3r print config file + _extract_print_config_from_archive(archive, stat, bundle, filename); + } + else if (boost::algorithm::iequals(name, MODEL_CONFIG_FILE)) + { + // extract slic3r model config file + if (!_extract_model_config_from_archive(archive, stat, model)) + { + mz_zip_reader_end(&archive); + add_error("Archive does not contain a valid model config"); + return false; + } + } + } + } + + mz_zip_reader_end(&archive); + + for (const IdToModelObjectMap::value_type& object : m_objects) + { + ObjectMetadata::VolumeMetadataList volumes; + ObjectMetadata::VolumeMetadataList* volumes_ptr = nullptr; + + IdToGeometryMap::const_iterator obj_geometry = m_geometries.find(object.first); + if (obj_geometry == m_geometries.end()) + { + add_error("Unable to find object geometry"); + return false; + } + + IdToLayerHeightsProfileMap::iterator obj_layer_heights_profile = m_layer_heights_profiles.find(object.first); + if (obj_layer_heights_profile != m_layer_heights_profiles.end()) + { + object.second->layer_height_profile = obj_layer_heights_profile->second; + object.second->layer_height_profile_valid = true; + } + + IdToMetadataMap::iterator obj_metadata = m_objects_metadata.find(object.first); + if (obj_metadata != m_objects_metadata.end()) + { + // config data has been found, this model was saved using slic3r pe + + // apply object's name and config data + for (const Metadata& metadata : obj_metadata->second.metadata) + { + if (metadata.key == "name") + object.second->name = metadata.value; + else + object.second->config.set_deserialize(metadata.key, metadata.value); + } + + // select object's detected volumes + volumes_ptr = &obj_metadata->second.volumes; + } + else + { + // config data not found, this model was not saved using slic3r pe + + // add the entire geometry as the single volume to generate + volumes.emplace_back(0, (int)obj_geometry->second.triangles.size() / 3 - 1); + + // select as volumes + volumes_ptr = &volumes; + } + + if (!_generate_volumes(*object.second, obj_geometry->second, *volumes_ptr)) + return false; + } + + // fixes the min z of the model if negative + model.adjust_min_z(); + + return true; + } + + bool _3MF_Importer::_extract_model_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat) + { + if (stat.m_uncomp_size == 0) + { + add_error("Found invalid size"); + return false; + } + + _destroy_xml_parser(); + + m_xml_parser = XML_ParserCreate(nullptr); + if (m_xml_parser == nullptr) + { + add_error("Unable to create parser"); + return false; + } + + 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) + { + add_error("Unable to create buffer"); + return false; + } + + mz_bool res = mz_zip_reader_extract_file_to_mem(&archive, stat.m_filename, parser_buffer, (size_t)stat.m_uncomp_size, 0); + if (res == 0) + { + add_error("Error while reading model data to buffer"); + return false; + } + + if (!XML_ParseBuffer(m_xml_parser, (int)stat.m_uncomp_size, 1)) + { + char error_buf[1024]; + ::sprintf(error_buf, "Error (%s) while parsing xml file at line %d", XML_ErrorString(XML_GetErrorCode(m_xml_parser)), XML_GetCurrentLineNumber(m_xml_parser)); + add_error(error_buf); + return false; + } + + return true; + } + + void _3MF_Importer::_extract_print_config_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat, PresetBundle& bundle, const std::string& archive_filename) + { + if (stat.m_uncomp_size > 0) + { + std::string buffer((size_t)stat.m_uncomp_size, 0); + mz_bool res = mz_zip_reader_extract_file_to_mem(&archive, stat.m_filename, (void*)buffer.data(), (size_t)stat.m_uncomp_size, 0); + if (res == 0) + { + add_error("Error while reading config data to buffer"); + return; + } + bundle.load_config_string(buffer.data(), archive_filename.c_str()); + } + } + + void _3MF_Importer::_extract_layer_heights_profile_config_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat) + { + if (stat.m_uncomp_size > 0) + { + std::string buffer((size_t)stat.m_uncomp_size, 0); + mz_bool res = mz_zip_reader_extract_file_to_mem(&archive, stat.m_filename, (void*)buffer.data(), (size_t)stat.m_uncomp_size, 0); + if (res == 0) + { + add_error("Error while reading layer heights profile data to buffer"); + return; + } + + if (buffer.back() == '\n') + buffer.pop_back(); + + std::vector<std::string> objects; + boost::split(objects, buffer, boost::is_any_of("\n"), boost::token_compress_off); + + for (const std::string& object : objects) + { + std::vector<std::string> object_data; + boost::split(object_data, object, boost::is_any_of("|"), boost::token_compress_off); + if (object_data.size() != 2) + { + add_error("Error while reading object data"); + continue; + } + + std::vector<std::string> object_data_id; + boost::split(object_data_id, object_data[0], boost::is_any_of("="), boost::token_compress_off); + if (object_data_id.size() != 2) + { + add_error("Error while reading object id"); + continue; + } + + int object_id = std::atoi(object_data_id[1].c_str()); + if (object_id == 0) + { + add_error("Found invalid object id"); + continue; + } + + IdToLayerHeightsProfileMap::iterator object_item = m_layer_heights_profiles.find(object_id); + if (object_item != m_layer_heights_profiles.end()) + { + add_error("Found duplicated layer heights profile"); + continue; + } + + std::vector<std::string> object_data_profile; + boost::split(object_data_profile, object_data[1], boost::is_any_of(";"), boost::token_compress_off); + if ((object_data_profile.size() <= 4) || (object_data_profile.size() % 2 != 0)) + { + add_error("Found invalid layer heights profile"); + continue; + } + + std::vector<coordf_t> profile; + profile.reserve(object_data_profile.size()); + + for (const std::string& value : object_data_profile) + { + profile.push_back((coordf_t)std::atof(value.c_str())); + } + + m_layer_heights_profiles.insert(IdToLayerHeightsProfileMap::value_type(object_id, profile)); + } + } + } + + bool _3MF_Importer::_extract_model_config_from_archive(mz_zip_archive& archive, const mz_zip_archive_file_stat& stat, Model& model) + { + if (stat.m_uncomp_size == 0) + { + add_error("Found invalid size"); + return false; + } + + _destroy_xml_parser(); + + m_xml_parser = XML_ParserCreate(nullptr); + if (m_xml_parser == nullptr) + { + add_error("Unable to create parser"); + return false; + } + + XML_SetUserData(m_xml_parser, (void*)this); + XML_SetElementHandler(m_xml_parser, _3MF_Importer::_handle_start_config_xml_element, _3MF_Importer::_handle_end_config_xml_element); + + void* parser_buffer = XML_GetBuffer(m_xml_parser, (int)stat.m_uncomp_size); + if (parser_buffer == nullptr) + { + add_error("Unable to create buffer"); + return false; + } + + mz_bool res = mz_zip_reader_extract_file_to_mem(&archive, stat.m_filename, parser_buffer, (size_t)stat.m_uncomp_size, 0); + if (res == 0) + { + add_error("Error while reading config data to buffer"); + return false; + } + + if (!XML_ParseBuffer(m_xml_parser, (int)stat.m_uncomp_size, 1)) + { + char error_buf[1024]; + ::sprintf(error_buf, "Error (%s) while parsing xml file at line %d", XML_ErrorString(XML_GetErrorCode(m_xml_parser)), XML_GetCurrentLineNumber(m_xml_parser)); + add_error(error_buf); + return false; + } + + return true; + } + + void _3MF_Importer::_handle_start_model_xml_element(const char* name, const char** attributes) + { + if (m_xml_parser == nullptr) + return; + + bool res = true; + unsigned int num_attributes = (unsigned int)XML_GetSpecifiedAttributeCount(m_xml_parser); + + if (::strcmp(MODEL_TAG, name) == 0) + res = _handle_start_model(attributes, num_attributes); + else if (::strcmp(RESOURCES_TAG, name) == 0) + res = _handle_start_resources(attributes, num_attributes); + else if (::strcmp(OBJECT_TAG, name) == 0) + res = _handle_start_object(attributes, num_attributes); + else if (::strcmp(MESH_TAG, name) == 0) + res = _handle_start_mesh(attributes, num_attributes); + else if (::strcmp(VERTICES_TAG, name) == 0) + res = _handle_start_vertices(attributes, num_attributes); + else if (::strcmp(VERTEX_TAG, name) == 0) + res = _handle_start_vertex(attributes, num_attributes); + else if (::strcmp(TRIANGLES_TAG, name) == 0) + res = _handle_start_triangles(attributes, num_attributes); + else if (::strcmp(TRIANGLE_TAG, name) == 0) + res = _handle_start_triangle(attributes, num_attributes); + else if (::strcmp(COMPONENTS_TAG, name) == 0) + res = _handle_start_components(attributes, num_attributes); + else if (::strcmp(COMPONENT_TAG, name) == 0) + res = _handle_start_component(attributes, num_attributes); + else if (::strcmp(BUILD_TAG, name) == 0) + 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(); + } + + void _3MF_Importer::_handle_end_model_xml_element(const char* name) + { + if (m_xml_parser == nullptr) + return; + + bool res = true; + + if (::strcmp(MODEL_TAG, name) == 0) + res = _handle_end_model(); + else if (::strcmp(RESOURCES_TAG, name) == 0) + res = _handle_end_resources(); + else if (::strcmp(OBJECT_TAG, name) == 0) + res = _handle_end_object(); + else if (::strcmp(MESH_TAG, name) == 0) + res = _handle_end_mesh(); + else if (::strcmp(VERTICES_TAG, name) == 0) + res = _handle_end_vertices(); + else if (::strcmp(VERTEX_TAG, name) == 0) + res = _handle_end_vertex(); + else if (::strcmp(TRIANGLES_TAG, name) == 0) + res = _handle_end_triangles(); + else if (::strcmp(TRIANGLE_TAG, name) == 0) + res = _handle_end_triangle(); + else if (::strcmp(COMPONENTS_TAG, name) == 0) + res = _handle_end_components(); + else if (::strcmp(COMPONENT_TAG, name) == 0) + res = _handle_end_component(); + else if (::strcmp(BUILD_TAG, name) == 0) + 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) + return; + + bool res = true; + unsigned int num_attributes = (unsigned int)XML_GetSpecifiedAttributeCount(m_xml_parser); + + if (::strcmp(CONFIG_TAG, name) == 0) + res = _handle_start_config(attributes, num_attributes); + else if (::strcmp(OBJECT_TAG, name) == 0) + res = _handle_start_config_object(attributes, num_attributes); + else if (::strcmp(VOLUME_TAG, name) == 0) + res = _handle_start_config_volume(attributes, num_attributes); + else if (::strcmp(METADATA_TAG, name) == 0) + res = _handle_start_config_metadata(attributes, num_attributes); + + if (!res) + _stop_xml_parser(); + } + + void _3MF_Importer::_handle_end_config_xml_element(const char* name) + { + if (m_xml_parser == nullptr) + return; + + bool res = true; + + if (::strcmp(CONFIG_TAG, name) == 0) + res = _handle_end_config(); + else if (::strcmp(OBJECT_TAG, name) == 0) + res = _handle_end_config_object(); + else if (::strcmp(VOLUME_TAG, name) == 0) + res = _handle_end_config_volume(); + else if (::strcmp(METADATA_TAG, name) == 0) + res = _handle_end_config_metadata(); + + if (!res) + _stop_xml_parser(); + } + + bool _3MF_Importer::_handle_start_model(const char** attributes, unsigned int num_attributes) + { + m_unit_factor = get_unit_factor(get_attribute_value_string(attributes, num_attributes, UNIT_ATTR)); + return true; + } + + bool _3MF_Importer::_handle_end_model() + { + // deletes all non-built or non-instanced objects + for (const IdToModelObjectMap::value_type& object : m_objects) + { + if ((object.second != nullptr) && (object.second->instances.size() == 0)) + m_model->delete_object(object.second); + } + + // applies instances' matrices + for (Instance& instance : m_instances) + { + if (instance.instance != nullptr) + { + ModelObject* object = instance.instance->get_object(); + if (object != nullptr) + { + // apply the transform to the instance + _apply_transform(*instance.instance, instance.transform); + } + } + } + + return true; + } + + bool _3MF_Importer::_handle_start_resources(const char** attributes, unsigned int num_attributes) + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_end_resources() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_object(const char** attributes, unsigned int num_attributes) + { + // reset current data + m_curr_object.reset(); + + if (is_valid_object_type(get_attribute_value_string(attributes, num_attributes, TYPE_ATTR))) + { + // create new object (it may be removed later if no instances are generated from it) + m_curr_object.object = m_model->add_object(); + if (m_curr_object.object == nullptr) + { + add_error("Unable to create object"); + return false; + } + + // set object data + m_curr_object.object->name = get_attribute_value_string(attributes, num_attributes, NAME_ATTR); + m_curr_object.id = get_attribute_value_int(attributes, num_attributes, ID_ATTR); + } + + return true; + } + + bool _3MF_Importer::_handle_end_object() + { + if (m_curr_object.object != nullptr) + { + if (m_curr_object.geometry.empty()) + { + // no geometry defined + // remove the object from the model + m_model->delete_object(m_curr_object.object); + + if (m_curr_object.components.empty()) + { + // no components defined -> invalid object, delete it + IdToModelObjectMap::iterator object_item = m_objects.find(m_curr_object.id); + if (object_item != m_objects.end()) + m_objects.erase(object_item); + + IdToAliasesMap::iterator alias_item = m_objects_aliases.find(m_curr_object.id); + if (alias_item != m_objects_aliases.end()) + m_objects_aliases.erase(alias_item); + } + else + // adds components to aliases + m_objects_aliases.insert(IdToAliasesMap::value_type(m_curr_object.id, m_curr_object.components)); + } + else + { + // geometry defined, store it for later use + m_geometries.insert(IdToGeometryMap::value_type(m_curr_object.id, std::move(m_curr_object.geometry))); + + // stores the object for later use + if (m_objects.find(m_curr_object.id) == m_objects.end()) + { + m_objects.insert(IdToModelObjectMap::value_type(m_curr_object.id, m_curr_object.object)); + m_objects_aliases.insert(IdToAliasesMap::value_type(m_curr_object.id, ComponentsList(1, Component(m_curr_object.id)))); // aliases itself + } + else + { + add_error("Found object with duplicate id"); + return false; + } + } + } + + return true; + } + + bool _3MF_Importer::_handle_start_mesh(const char** attributes, unsigned int num_attributes) + { + // reset current geometry + m_curr_object.geometry.reset(); + return true; + } + + bool _3MF_Importer::_handle_end_mesh() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_vertices(const char** attributes, unsigned int num_attributes) + { + // reset current vertices + m_curr_object.geometry.vertices.clear(); + return true; + } + + bool _3MF_Importer::_handle_end_vertices() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_vertex(const char** attributes, unsigned int num_attributes) + { + // appends the vertex coordinates + // missing values are set equal to ZERO + m_curr_object.geometry.vertices.push_back(m_unit_factor * get_attribute_value_float(attributes, num_attributes, X_ATTR)); + m_curr_object.geometry.vertices.push_back(m_unit_factor * get_attribute_value_float(attributes, num_attributes, Y_ATTR)); + m_curr_object.geometry.vertices.push_back(m_unit_factor * get_attribute_value_float(attributes, num_attributes, Z_ATTR)); + return true; + } + + bool _3MF_Importer::_handle_end_vertex() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_triangles(const char** attributes, unsigned int num_attributes) + { + // reset current triangles + m_curr_object.geometry.triangles.clear(); + return true; + } + + bool _3MF_Importer::_handle_end_triangles() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_triangle(const char** attributes, unsigned int num_attributes) + { + // we are ignoring the following attributes: + // p1 + // p2 + // p3 + // pid + // see specifications + + // appends the triangle's vertices indices + // missing values are set equal to ZERO + m_curr_object.geometry.triangles.push_back((unsigned int)get_attribute_value_int(attributes, num_attributes, V1_ATTR)); + m_curr_object.geometry.triangles.push_back((unsigned int)get_attribute_value_int(attributes, num_attributes, V2_ATTR)); + m_curr_object.geometry.triangles.push_back((unsigned int)get_attribute_value_int(attributes, num_attributes, V3_ATTR)); + return true; + } + + bool _3MF_Importer::_handle_end_triangle() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_components(const char** attributes, unsigned int num_attributes) + { + // reset current components + m_curr_object.components.clear(); + return true; + } + + bool _3MF_Importer::_handle_end_components() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_component(const char** attributes, unsigned int num_attributes) + { + int object_id = get_attribute_value_int(attributes, num_attributes, OBJECTID_ATTR); + Transform3d transform = get_transform_from_string(get_attribute_value_string(attributes, num_attributes, TRANSFORM_ATTR)); + + IdToModelObjectMap::iterator object_item = m_objects.find(object_id); + if (object_item == m_objects.end()) + { + IdToAliasesMap::iterator alias_item = m_objects_aliases.find(object_id); + if (alias_item == m_objects_aliases.end()) + { + add_error("Found component with invalid object id"); + return false; + } + } + + m_curr_object.components.emplace_back(object_id, transform); + + return true; + } + + bool _3MF_Importer::_handle_end_component() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_build(const char** attributes, unsigned int num_attributes) + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_end_build() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_item(const char** attributes, unsigned int num_attributes) + { + // we are ignoring the following attributes + // thumbnail + // partnumber + // pid + // pindex + // see specifications + + int object_id = get_attribute_value_int(attributes, num_attributes, OBJECTID_ATTR); + Transform3d transform = get_transform_from_string(get_attribute_value_string(attributes, num_attributes, TRANSFORM_ATTR)); + + return _create_object_instance(object_id, transform, 1); + } + + bool _3MF_Importer::_handle_end_item() + { + // do nothing + 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 Transform3d& transform, unsigned int recur_counter) + { + static const unsigned int MAX_RECURSIONS = 10; + + // escape from circular aliasing + if (recur_counter > MAX_RECURSIONS) + { + add_error("Too many recursions"); + return false; + } + + IdToAliasesMap::iterator it = m_objects_aliases.find(object_id); + if (it == m_objects_aliases.end()) + { + add_error("Found item with invalid object id"); + return false; + } + + if ((it->second.size() == 1) && (it->second[0].object_id == object_id)) + { + // aliasing to itself + + IdToModelObjectMap::iterator object_item = m_objects.find(object_id); + if ((object_item == m_objects.end()) || (object_item->second == nullptr)) + { + add_error("Found invalid object"); + return false; + } + else + { + ModelInstance* instance = object_item->second->add_instance(); + if (instance == nullptr) + { + add_error("Unable to add object instance"); + return false; + } + + m_instances.emplace_back(instance, transform); + } + } + else + { + // recursively process nested components + for (const Component& component : it->second) + { + if (!_create_object_instance(component.object_id, transform * component.transform, recur_counter + 1)) + return false; + } + } + + return true; + } + + void _3MF_Importer::_apply_transform(ModelInstance& instance, const Transform3d& transform) + { + // slic3r ModelInstance cannot be transformed using a matrix + // we extract from the given matrix only the values currently used + + // translation +#if ENABLE_MODELINSTANCE_3D_OFFSET + Vec3d offset(transform(0, 3), transform(1, 3), transform(2, 3)); +#else + double offset_x = transform(0, 3); + double offset_y = transform(1, 3); + double offset_z = transform(2, 3); +#endif // ENABLE_MODELINSTANCE_3D_OFFSET + + // scale + double sx = ::sqrt(sqr(transform(0, 0)) + sqr(transform(1, 0)) + sqr(transform(2, 0))); + double sy = ::sqrt(sqr(transform(0, 1)) + sqr(transform(1, 1)) + sqr(transform(2, 1))); + double sz = ::sqrt(sqr(transform(0, 2)) + sqr(transform(1, 2)) + sqr(transform(2, 2))); + + // invalid scale value, return + if ((sx == 0.0) || (sy == 0.0) || (sz == 0.0)) + return; + + // non-uniform scale value, return + if ((std::abs(sx - sy) > 0.00001) || (std::abs(sx - sz) > 0.00001)) + return; + + double inv_sx = 1.0 / sx; + double inv_sy = 1.0 / sy; + double inv_sz = 1.0 / sz; + + Eigen::Matrix3d m3x3; + m3x3 << transform(0, 0) * inv_sx, transform(0, 1) * inv_sy, transform(0, 2) * inv_sz, + transform(1, 0) * inv_sx, transform(1, 1) * inv_sy, transform(1, 2) * inv_sz, + transform(2, 0) * inv_sx, transform(2, 1) * inv_sy, transform(2, 2) * inv_sz; + + Eigen::AngleAxisd rotation; + rotation.fromRotationMatrix(m3x3); + + // invalid rotation axis, we currently handle only rotations around Z axis + if ((rotation.angle() != 0.0) && (rotation.axis() != Vec3d::UnitZ()) && (rotation.axis() != -Vec3d::UnitZ())) + return; + + double angle_z = (rotation.axis() == Vec3d::UnitZ()) ? rotation.angle() : -rotation.angle(); + +#if ENABLE_MODELINSTANCE_3D_OFFSET + instance.set_offset(offset); +#else + instance.offset(0) = offset_x; + instance.offset(1) = offset_y; +#endif // ENABLE_MODELINSTANCE_3D_OFFSET + instance.scaling_factor = sx; + instance.rotation = angle_z; + } + + bool _3MF_Importer::_handle_start_config(const char** attributes, unsigned int num_attributes) + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_end_config() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_config_object(const char** attributes, unsigned int num_attributes) + { + int object_id = get_attribute_value_int(attributes, num_attributes, ID_ATTR); + IdToMetadataMap::iterator object_item = m_objects_metadata.find(object_id); + if (object_item != m_objects_metadata.end()) + { + add_error("Found duplicated object id"); + return false; + } + + m_objects_metadata.insert(IdToMetadataMap::value_type(object_id, ObjectMetadata())); + m_curr_config.object_id = object_id; + return true; + } + + bool _3MF_Importer::_handle_end_config_object() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_config_volume(const char** attributes, unsigned int num_attributes) + { + IdToMetadataMap::iterator object = m_objects_metadata.find(m_curr_config.object_id); + if (object == m_objects_metadata.end()) + { + add_error("Cannot assign volume to a valid object"); + return false; + } + + m_curr_config.volume_id = object->second.volumes.size(); + + unsigned int first_triangle_id = (unsigned int)get_attribute_value_int(attributes, num_attributes, FIRST_TRIANGLE_ID_ATTR); + unsigned int last_triangle_id = (unsigned int)get_attribute_value_int(attributes, num_attributes, LAST_TRIANGLE_ID_ATTR); + + object->second.volumes.emplace_back(first_triangle_id, last_triangle_id); + return true; + } + + bool _3MF_Importer::_handle_end_config_volume() + { + // do nothing + return true; + } + + bool _3MF_Importer::_handle_start_config_metadata(const char** attributes, unsigned int num_attributes) + { + IdToMetadataMap::iterator object = m_objects_metadata.find(m_curr_config.object_id); + if (object == m_objects_metadata.end()) + { + add_error("Cannot assign metadata to valid object id"); + return false; + } + + std::string type = get_attribute_value_string(attributes, num_attributes, TYPE_ATTR); + std::string key = get_attribute_value_string(attributes, num_attributes, KEY_ATTR); + std::string value = get_attribute_value_string(attributes, num_attributes, VALUE_ATTR); + + if (type == OBJECT_TYPE) + object->second.metadata.emplace_back(key, value); + else if (type == VOLUME_TYPE) + { + if (m_curr_config.volume_id < object->second.volumes.size()) + object->second.volumes[m_curr_config.volume_id].metadata.emplace_back(key, value); + } + else + { + add_error("Found invalid metadata type"); + return false; + } + + return true; + } + + bool _3MF_Importer::_handle_end_config_metadata() + { + // do nothing + return true; + } + + bool _3MF_Importer::_generate_volumes(ModelObject& object, const Geometry& geometry, const ObjectMetadata::VolumeMetadataList& volumes) + { + if (!object.volumes.empty()) + { + add_error("Found invalid volumes count"); + return false; + } + + unsigned int geo_tri_count = geometry.triangles.size() / 3; + + for (const ObjectMetadata::VolumeMetadata& volume_data : volumes) + { + if ((geo_tri_count <= volume_data.first_triangle_id) || (geo_tri_count <= volume_data.last_triangle_id) || (volume_data.last_triangle_id < volume_data.first_triangle_id)) + { + add_error("Found invalid triangle id"); + return false; + } + + // splits volume out of imported geometry + unsigned int triangles_count = volume_data.last_triangle_id - volume_data.first_triangle_id + 1; + ModelVolume* volume = object.add_volume(TriangleMesh()); + stl_file& stl = volume->mesh.stl; + stl.stats.type = inmemory; + stl.stats.number_of_facets = (uint32_t)triangles_count; + stl.stats.original_num_facets = (int)stl.stats.number_of_facets; + stl_allocate(&stl); + + unsigned int src_start_id = volume_data.first_triangle_id * 3; + + for (size_t i = 0; i < triangles_count; ++i) + { + unsigned int ii = i * 3; + stl_facet& facet = stl.facet_start[i]; + for (unsigned int v = 0; v < 3; ++v) + { + ::memcpy(facet.vertex[v].data(), (const void*)&geometry.vertices[geometry.triangles[src_start_id + ii + v] * 3], 3 * sizeof(float)); + } + } + + stl_get_size(&stl); + volume->mesh.repair(); + volume->calculate_convex_hull(); + + // apply volume's name and config data + for (const Metadata& metadata : volume_data.metadata) + { + if (metadata.key == NAME_KEY) + volume->name = metadata.value; + else if ((metadata.key == MODIFIER_KEY) && (metadata.value == "1")) + volume->set_type(ModelVolume::PARAMETER_MODIFIER); + else if (metadata.key == VOLUME_TYPE_KEY) + volume->set_type(ModelVolume::type_from_string(metadata.value)); + else + volume->config.set_deserialize(metadata.key, metadata.value); + } + } + + return true; + } + + void XMLCALL _3MF_Importer::_handle_start_model_xml_element(void* userData, const char* name, const char** attributes) + { + _3MF_Importer* importer = (_3MF_Importer*)userData; + if (importer != nullptr) + importer->_handle_start_model_xml_element(name, attributes); + } + + void XMLCALL _3MF_Importer::_handle_end_model_xml_element(void* userData, const char* name) + { + _3MF_Importer* importer = (_3MF_Importer*)userData; + if (importer != nullptr) + 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; + if (importer != nullptr) + importer->_handle_start_config_xml_element(name, attributes); + } + + void XMLCALL _3MF_Importer::_handle_end_config_xml_element(void* userData, const char* name) + { + _3MF_Importer* importer = (_3MF_Importer*)userData; + if (importer != nullptr) + importer->_handle_end_config_xml_element(name); + } + + class _3MF_Exporter : public _3MF_Base + { + struct BuildItem + { + unsigned int id; + Transform3d transform; + + BuildItem(unsigned int id, const Transform3d& transform) + : id(id) + , transform(transform) + { + } + }; + + struct Offsets + { + unsigned int first_vertex_id; + unsigned int first_triangle_id; + unsigned int last_triangle_id; + + Offsets(unsigned int first_vertex_id) + : first_vertex_id(first_vertex_id) + , first_triangle_id(-1) + , last_triangle_id(-1) + { + } + }; + + typedef std::map<const ModelVolume*, Offsets> VolumeToOffsetsMap; + + struct ObjectData + { + ModelObject* object; + VolumeToOffsetsMap volumes_offsets; + + explicit ObjectData(ModelObject* object) + : object(object) + { + } + }; + + typedef std::vector<BuildItem> BuildItemsList; + typedef std::map<int, ObjectData> IdToObjectDataMap; + + IdToObjectDataMap m_objects_data; + + public: + bool save_model_to_file(const std::string& filename, Model& model, const Print& print, bool export_print_config); + + private: + bool _save_model_to_file(const std::string& filename, Model& model, const Print& print, bool export_print_config); + bool _add_content_types_file_to_archive(mz_zip_archive& archive); + bool _add_relationships_file_to_archive(mz_zip_archive& archive); + bool _add_model_file_to_archive(mz_zip_archive& archive, Model& model); + bool _add_object_to_model_stream(std::stringstream& stream, unsigned int& object_id, ModelObject& object, BuildItemsList& build_items, VolumeToOffsetsMap& volumes_offsets); + bool _add_mesh_to_object_stream(std::stringstream& stream, ModelObject& object, VolumeToOffsetsMap& volumes_offsets); + bool _add_build_to_model_stream(std::stringstream& stream, const BuildItemsList& build_items); + bool _add_layer_height_profile_file_to_archive(mz_zip_archive& archive, Model& model); + bool _add_print_config_file_to_archive(mz_zip_archive& archive, const Print& print); + bool _add_model_config_file_to_archive(mz_zip_archive& archive, const Model& model); + }; + + bool _3MF_Exporter::save_model_to_file(const std::string& filename, Model& model, const Print& print, bool export_print_config) + { + clear_errors(); + return _save_model_to_file(filename, model, print, export_print_config); + } + + bool _3MF_Exporter::_save_model_to_file(const std::string& filename, Model& model, const Print& print, bool export_print_config) + { + mz_zip_archive archive; + mz_zip_zero_struct(&archive); + + m_objects_data.clear(); + + mz_bool res = mz_zip_writer_init_file(&archive, filename.c_str(), 0); + if (res == 0) + { + add_error("Unable to open the file"); + return false; + } + + // adds content types file + if (!_add_content_types_file_to_archive(archive)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + return false; + } + + // adds relationships file + if (!_add_relationships_file_to_archive(archive)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + return false; + } + + // adds model file + if (!_add_model_file_to_archive(archive, model)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + return false; + } + + // adds layer height profile file + if (!_add_layer_height_profile_file_to_archive(archive, model)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + return false; + } + + // adds slic3r print config file + if (export_print_config) + { + if (!_add_print_config_file_to_archive(archive, print)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + return false; + } + } + + // adds slic3r model config file + if (!_add_model_config_file_to_archive(archive, model)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + return false; + } + + if (!mz_zip_writer_finalize_archive(&archive)) + { + mz_zip_writer_end(&archive); + boost::filesystem::remove(filename); + add_error("Unable to finalize the archive"); + return false; + } + + mz_zip_writer_end(&archive); + + return true; + } + + bool _3MF_Exporter::_add_content_types_file_to_archive(mz_zip_archive& archive) + { + std::stringstream stream; + stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"; + stream << "<Types xmlns=\"http://schemas.openxmlformats.org/package/2006/content-types\">\n"; + stream << " <Default Extension=\"rels\" ContentType=\"application/vnd.openxmlformats-package.relationships+xml\" />\n"; + stream << " <Default Extension=\"model\" ContentType=\"application/vnd.ms-package.3dmanufacturing-3dmodel+xml\" />\n"; + stream << "</Types>"; + + std::string out = stream.str(); + + if (!mz_zip_writer_add_mem(&archive, CONTENT_TYPES_FILE.c_str(), (const void*)out.data(), out.length(), MZ_DEFAULT_COMPRESSION)) + { + add_error("Unable to add content types file to archive"); + return false; + } + + return true; + } + + bool _3MF_Exporter::_add_relationships_file_to_archive(mz_zip_archive& archive) + { + std::stringstream stream; + stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"; + stream << "<Relationships xmlns=\"http://schemas.openxmlformats.org/package/2006/relationships\">\n"; + stream << " <Relationship Target=\"/" << MODEL_FILE << "\" Id=\"rel-1\" Type=\"http://schemas.microsoft.com/3dmanufacturing/2013/01/3dmodel\" />\n"; + stream << "</Relationships>"; + + std::string out = stream.str(); + + if (!mz_zip_writer_add_mem(&archive, RELATIONSHIPS_FILE.c_str(), (const void*)out.data(), out.length(), MZ_DEFAULT_COMPRESSION)) + { + add_error("Unable to add relationships file to archive"); + return false; + } + + return true; + } + + bool _3MF_Exporter::_add_model_file_to_archive(mz_zip_archive& archive, Model& model) + { + std::stringstream stream; + stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\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 << "</" << METADATA_TAG << ">\n"; + stream << " <" << RESOURCES_TAG << ">\n"; + + BuildItemsList build_items; + + unsigned int object_id = 1; + for (ModelObject* obj : model.objects) + { + if (obj == nullptr) + continue; + + unsigned int curr_id = object_id; + IdToObjectDataMap::iterator object_it = m_objects_data.insert(IdToObjectDataMap::value_type(curr_id, ObjectData(obj))).first; + + if (!_add_object_to_model_stream(stream, object_id, *obj, build_items, object_it->second.volumes_offsets)) + { + add_error("Unable to add object to archive"); + return false; + } + } + + stream << " </" << RESOURCES_TAG << ">\n"; + + if (!_add_build_to_model_stream(stream, build_items)) + { + add_error("Unable to add build to archive"); + return false; + } + + stream << "</" << MODEL_TAG << ">\n"; + + std::string out = stream.str(); + + if (!mz_zip_writer_add_mem(&archive, MODEL_FILE.c_str(), (const void*)out.data(), out.length(), MZ_DEFAULT_COMPRESSION)) + { + add_error("Unable to add model file to archive"); + return false; + } + + return true; + } + + bool _3MF_Exporter::_add_object_to_model_stream(std::stringstream& stream, unsigned int& object_id, ModelObject& object, BuildItemsList& build_items, VolumeToOffsetsMap& volumes_offsets) + { + unsigned int id = 0; + for (const ModelInstance* instance : object.instances) + { + if (instance == nullptr) + continue; + + unsigned int instance_id = object_id + id; + stream << " <" << OBJECT_TAG << " id=\"" << instance_id << "\" type=\"model\">\n"; + + if (id == 0) + { + if (!_add_mesh_to_object_stream(stream, object, volumes_offsets)) + { + add_error("Unable to add mesh to archive"); + return false; + } + } + else + { + stream << " <" << COMPONENTS_TAG << ">\n"; + stream << " <" << COMPONENT_TAG << " objectid=\"" << object_id << "\" />\n"; + stream << " </" << COMPONENTS_TAG << ">\n"; + } + + Transform3d t = instance->world_matrix(); + build_items.emplace_back(instance_id, t); + + stream << " </" << OBJECT_TAG << ">\n"; + + ++id; + } + + object_id += id; + return true; + } + + bool _3MF_Exporter::_add_mesh_to_object_stream(std::stringstream& stream, ModelObject& object, VolumeToOffsetsMap& volumes_offsets) + { + stream << " <" << MESH_TAG << ">\n"; + stream << " <" << VERTICES_TAG << ">\n"; + + unsigned int vertices_count = 0; + for (ModelVolume* volume : object.volumes) + { + if (volume == nullptr) + continue; + + VolumeToOffsetsMap::iterator volume_it = volumes_offsets.insert(VolumeToOffsetsMap::value_type(volume, Offsets(vertices_count))).first; + + if (!volume->mesh.repaired) + volume->mesh.repair(); + + stl_file& stl = volume->mesh.stl; + if (stl.v_shared == nullptr) + stl_generate_shared_vertices(&stl); + + if (stl.stats.shared_vertices == 0) + { + add_error("Found invalid mesh"); + return false; + } + + vertices_count += stl.stats.shared_vertices; + + for (int i = 0; i < stl.stats.shared_vertices; ++i) + { + stream << " <" << VERTEX_TAG << " "; + stream << "x=\"" << stl.v_shared[i](0) << "\" "; + stream << "y=\"" << stl.v_shared[i](1) << "\" "; + stream << "z=\"" << stl.v_shared[i](2) << "\" />\n"; + } + } + + stream << " </" << VERTICES_TAG << ">\n"; + stream << " <" << TRIANGLES_TAG << ">\n"; + + unsigned int triangles_count = 0; + for (ModelVolume* volume : object.volumes) + { + if (volume == nullptr) + continue; + + VolumeToOffsetsMap::iterator volume_it = volumes_offsets.find(volume); + assert(volume_it != volumes_offsets.end()); + + stl_file& stl = volume->mesh.stl; + + // updates triangle offsets + volume_it->second.first_triangle_id = triangles_count; + triangles_count += stl.stats.number_of_facets; + volume_it->second.last_triangle_id = triangles_count - 1; + + for (uint32_t i = 0; i < stl.stats.number_of_facets; ++i) + { + stream << " <" << TRIANGLE_TAG << " "; + for (int j = 0; j < 3; ++j) + { + stream << "v" << j + 1 << "=\"" << stl.v_indices[i].vertex[j] + volume_it->second.first_vertex_id << "\" "; + } + stream << "/>\n"; + } + } + + stream << " </" << TRIANGLES_TAG << ">\n"; + stream << " </" << MESH_TAG << ">\n"; + + return true; + } + + bool _3MF_Exporter::_add_build_to_model_stream(std::stringstream& stream, const BuildItemsList& build_items) + { + if (build_items.size() == 0) + { + add_error("No build item found"); + return false; + } + + stream << " <" << BUILD_TAG << ">\n"; + + for (const BuildItem& item : build_items) + { + stream << " <" << ITEM_TAG << " objectid=\"" << item.id << "\" transform =\""; + for (unsigned c = 0; c < 4; ++c) + { + for (unsigned r = 0; r < 3; ++r) + { + stream << item.transform(r, c); + if ((r != 2) || (c != 3)) + stream << " "; + } + } + stream << "\" />\n"; + } + + stream << " </" << BUILD_TAG << ">\n"; + + return true; + } + + bool _3MF_Exporter::_add_layer_height_profile_file_to_archive(mz_zip_archive& archive, Model& model) + { + std::string out = ""; + char buffer[1024]; + + unsigned int count = 0; + for (const ModelObject* object : model.objects) + { + ++count; + std::vector<double> layer_height_profile = object->layer_height_profile_valid ? object->layer_height_profile : std::vector<double>(); + if ((layer_height_profile.size() >= 4) && ((layer_height_profile.size() % 2) == 0)) + { + sprintf(buffer, "object_id=%d|", count); + out += buffer; + + // Store the layer height profile as a single semicolon separated list. + for (size_t i = 0; i < layer_height_profile.size(); ++i) + { + sprintf(buffer, (i == 0) ? "%f" : ";%f", layer_height_profile[i]); + out += buffer; + } + + out += "\n"; + } + } + + if (!out.empty()) + { + if (!mz_zip_writer_add_mem(&archive, LAYER_HEIGHTS_PROFILE_FILE.c_str(), (const void*)out.data(), out.length(), MZ_DEFAULT_COMPRESSION)) + { + add_error("Unable to add layer heights profile file to archive"); + return false; + } + } + + return true; + } + + bool _3MF_Exporter::_add_print_config_file_to_archive(mz_zip_archive& archive, const Print& print) + { + char buffer[1024]; + sprintf(buffer, "; %s\n\n", header_slic3r_generated().c_str()); + std::string out = buffer; + + GCode::append_full_config(print, out); + + if (!out.empty()) + { + if (!mz_zip_writer_add_mem(&archive, PRINT_CONFIG_FILE.c_str(), (const void*)out.data(), out.length(), MZ_DEFAULT_COMPRESSION)) + { + add_error("Unable to add print config file to archive"); + return false; + } + } + + return true; + } + + bool _3MF_Exporter::_add_model_config_file_to_archive(mz_zip_archive& archive, const Model& model) + { + std::stringstream stream; + stream << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"; + stream << "<" << CONFIG_TAG << ">\n"; + + for (const IdToObjectDataMap::value_type& obj_metadata : m_objects_data) + { + const ModelObject* obj = obj_metadata.second.object; + if (obj != nullptr) + { + stream << " <" << OBJECT_TAG << " id=\"" << obj_metadata.first << "\">\n"; + + // stores object's name + if (!obj->name.empty()) + stream << " <" << METADATA_TAG << " " << TYPE_ATTR << "=\"" << OBJECT_TYPE << "\" " << KEY_ATTR << "=\"name\" " << VALUE_ATTR << "=\"" << xml_escape(obj->name) << "\"/>\n"; + + // stores object's config data + for (const std::string& key : obj->config.keys()) + { + stream << " <" << METADATA_TAG << " " << TYPE_ATTR << "=\"" << OBJECT_TYPE << "\" " << KEY_ATTR << "=\"" << key << "\" " << VALUE_ATTR << "=\"" << obj->config.serialize(key) << "\"/>\n"; + } + + for (const ModelVolume* volume : obj_metadata.second.object->volumes) + { + if (volume != nullptr) + { + const VolumeToOffsetsMap& offsets = obj_metadata.second.volumes_offsets; + VolumeToOffsetsMap::const_iterator it = offsets.find(volume); + if (it != offsets.end()) + { + // stores volume's offsets + stream << " <" << VOLUME_TAG << " "; + stream << FIRST_TRIANGLE_ID_ATTR << "=\"" << it->second.first_triangle_id << "\" "; + stream << LAST_TRIANGLE_ID_ATTR << "=\"" << it->second.last_triangle_id << "\">\n"; + + // stores volume's name + if (!volume->name.empty()) + stream << " <" << METADATA_TAG << " " << TYPE_ATTR << "=\"" << VOLUME_TYPE << "\" " << KEY_ATTR << "=\"" << NAME_KEY << "\" " << VALUE_ATTR << "=\"" << xml_escape(volume->name) << "\"/>\n"; + + // stores volume's modifier field (legacy, to support old slicers) + if (volume->is_modifier()) + stream << " <" << METADATA_TAG << " " << TYPE_ATTR << "=\"" << VOLUME_TYPE << "\" " << KEY_ATTR << "=\"" << MODIFIER_KEY << "\" " << VALUE_ATTR << "=\"1\"/>\n"; + // stores volume's type (overrides the modifier field above) + stream << " <" << METADATA_TAG << " " << TYPE_ATTR << "=\"" << VOLUME_TYPE << "\" " << KEY_ATTR << "=\"" << VOLUME_TYPE_KEY << "\" " << + VALUE_ATTR << "=\"" << ModelVolume::type_to_string(volume->type()) << "\"/>\n"; + + // stores volume's config data + for (const std::string& key : volume->config.keys()) + { + stream << " <" << METADATA_TAG << " " << TYPE_ATTR << "=\"" << VOLUME_TYPE << "\" " << KEY_ATTR << "=\"" << key << "\" " << VALUE_ATTR << "=\"" << volume->config.serialize(key) << "\"/>\n"; + } + + stream << " </" << VOLUME_TAG << ">\n"; + } + } + } + + stream << " </" << OBJECT_TAG << ">\n"; + } + } + + stream << "</" << CONFIG_TAG << ">\n"; + + std::string out = stream.str(); + + if (!mz_zip_writer_add_mem(&archive, MODEL_CONFIG_FILE.c_str(), (const void*)out.data(), out.length(), MZ_DEFAULT_COMPRESSION)) + { + add_error("Unable to add model config file to archive"); + return false; + } + + return true; + } + + bool load_3mf(const char* path, PresetBundle* bundle, Model* model) + { + if ((path == nullptr) || (bundle == nullptr) || (model == nullptr)) + return false; + + _3MF_Importer importer; + bool res = importer.load_model_from_file(path, *model, *bundle); + importer.log_errors(); + return res; + } + + bool store_3mf(const char* path, Model* model, Print* print, bool export_print_config) + { + if ((path == nullptr) || (model == nullptr) || (print == nullptr)) + return false; + + _3MF_Exporter exporter; + bool res = exporter.save_model_to_file(path, *model, *print, export_print_config); + + if (!res) + exporter.log_errors(); + + return res; + } +} // namespace Slic3r |