mirror of
https://github.com/Ultimaker/Cura.git
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Split-out bambu-specific elements to their own 3MF 'variant'.
part of CURA-12099
This commit is contained in:
Remco Burema
parent
17ab7a4890
commit
254087cb45
4 changed files with 308 additions and 134 deletions
168
plugins/3MFWriter/BambuLabVariant.py
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168
plugins/3MFWriter/BambuLabVariant.py
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@ -0,0 +1,168 @@
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# Copyright (c) 2025 UltiMaker
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# Cura is released under the terms of the LGPLv3 or higher.
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import hashlib
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import json
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from io import StringIO
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import xml.etree.ElementTree as ET
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import zipfile
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from PyQt6.QtCore import Qt, QBuffer
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from PyQt6.QtGui import QImage
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from UM.Application import Application
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from UM.Logger import Logger
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from UM.Mesh.MeshWriter import MeshWriter
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from UM.PluginRegistry import PluginRegistry
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from typing import cast
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from cura.CuraApplication import CuraApplication
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from .ThreeMFVariant import ThreeMFVariant
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from UM.i18n import i18nCatalog
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catalog = i18nCatalog("cura")
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# Path constants
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METADATA_PATH = "Metadata"
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THUMBNAIL_PATH_MULTIPLATE = f"{METADATA_PATH}/plate_1.png"
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THUMBNAIL_PATH_MULTIPLATE_SMALL = f"{METADATA_PATH}/plate_1_small.png"
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GCODE_PATH = f"{METADATA_PATH}/plate_1.gcode"
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GCODE_MD5_PATH = f"{GCODE_PATH}.md5"
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MODEL_SETTINGS_PATH = f"{METADATA_PATH}/model_settings.config"
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PLATE_DESC_PATH = f"{METADATA_PATH}/plate_1.json"
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SLICE_INFO_PATH = f"{METADATA_PATH}/slice_info.config"
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class BambuLabVariant(ThreeMFVariant):
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"""BambuLab specific implementation of the 3MF format."""
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@property
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def mime_type(self) -> str:
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return "application/vnd.bambulab-package.3dmanufacturing-3dmodel+xml"
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def process_thumbnail(self, snapshot: QImage, thumbnail_buffer: QBuffer,
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archive: zipfile.ZipFile, relations_element: ET.Element) -> None:
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"""Process the thumbnail for BambuLab variant."""
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# Write thumbnail
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archive.writestr(zipfile.ZipInfo(THUMBNAIL_PATH_MULTIPLATE), thumbnail_buffer.data())
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# Add relations elements for thumbnails
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ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH_MULTIPLATE, Id="rel-2",
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Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail")
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ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH_MULTIPLATE, Id="rel-4",
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Type="http://schemas.bambulab.com/package/2021/cover-thumbnail-middle")
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# Create and save small thumbnail
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small_snapshot = snapshot.scaled(128, 128, transformMode=Qt.TransformationMode.SmoothTransformation)
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small_thumbnail_buffer = QBuffer()
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small_thumbnail_buffer.open(QBuffer.OpenModeFlag.ReadWrite)
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small_snapshot.save(small_thumbnail_buffer, "PNG")
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# Write small thumbnail
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archive.writestr(zipfile.ZipInfo(THUMBNAIL_PATH_MULTIPLATE_SMALL), small_thumbnail_buffer.data())
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# Add relation for small thumbnail
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ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH_MULTIPLATE_SMALL, Id="rel-5",
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Type="http://schemas.bambulab.com/package/2021/cover-thumbnail-small")
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def add_extra_files(self, archive: zipfile.ZipFile, metadata_relations_element: ET.Element) -> None:
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"""Add BambuLab specific files to the archive."""
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self._storeGCode(archive, metadata_relations_element)
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self._storeModelSettings(archive)
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self._storePlateDesc(archive)
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self._storeSliceInfo(archive)
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def _storeGCode(self, archive: zipfile.ZipFile, metadata_relations_element: ET.Element):
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"""Store GCode data in the archive."""
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gcode_textio = StringIO()
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gcode_writer = cast(MeshWriter, PluginRegistry.getInstance().getPluginObject("GCodeWriter"))
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success = gcode_writer.write(gcode_textio, None)
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if not success:
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error_msg = catalog.i18nc("@info:error", "Can't write GCode to 3MF file")
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self._writer.setInformation(error_msg)
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Logger.error(error_msg)
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raise Exception(error_msg)
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gcode_data = gcode_textio.getvalue().encode("UTF-8")
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archive.writestr(zipfile.ZipInfo(GCODE_PATH), gcode_data)
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gcode_relation_element = ET.SubElement(metadata_relations_element, "Relationship",
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Target=f"/{GCODE_PATH}", Id="rel-1",
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Type="http://schemas.bambulab.com/package/2021/gcode")
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# Calculate and store the MD5 sum of the gcode data
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md5_hash = hashlib.md5(gcode_data).hexdigest()
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archive.writestr(zipfile.ZipInfo(GCODE_MD5_PATH), md5_hash.encode("UTF-8"))
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def _storeModelSettings(self, archive: zipfile.ZipFile):
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"""Store model settings in the archive."""
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config = ET.Element("config")
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plate = ET.SubElement(config, "plate")
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ET.SubElement(plate, "metadata", key="plater_id", value="1")
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ET.SubElement(plate, "metadata", key="plater_name", value="")
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ET.SubElement(plate, "metadata", key="locked", value="false")
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ET.SubElement(plate, "metadata", key="filament_map_mode", value="Auto For Flush")
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extruders_count = len(CuraApplication.getInstance().getExtruderManager().extruderIds)
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ET.SubElement(plate, "metadata", key="filament_maps", value=" ".join("1" for _ in range(extruders_count)))
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ET.SubElement(plate, "metadata", key="gcode_file", value=GCODE_PATH)
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ET.SubElement(plate, "metadata", key="thumbnail_file", value=THUMBNAIL_PATH_MULTIPLATE)
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ET.SubElement(plate, "metadata", key="pattern_bbox_file", value=PLATE_DESC_PATH)
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self._writer._storeElementTree(archive, MODEL_SETTINGS_PATH, config)
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def _storePlateDesc(self, archive: zipfile.ZipFile):
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"""Store plate description in the archive."""
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plate_desc = {}
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filament_ids = []
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filament_colors = []
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for extruder in CuraApplication.getInstance().getExtruderManager().getUsedExtruderStacks():
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filament_ids.append(extruder.getValue("extruder_nr"))
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filament_colors.append(self._writer._getMaterialColor(extruder))
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plate_desc["filament_ids"] = filament_ids
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plate_desc["filament_colors"] = filament_colors
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plate_desc["first_extruder"] = CuraApplication.getInstance().getExtruderManager().getInitialExtruderNr()
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plate_desc["is_seq_print"] = Application.getInstance().getGlobalContainerStack().getValue("print_sequence") == "one_at_a_time"
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plate_desc["nozzle_diameter"] = CuraApplication.getInstance().getExtruderManager().getActiveExtruderStack().getValue("machine_nozzle_size")
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plate_desc["version"] = 2
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file = zipfile.ZipInfo(PLATE_DESC_PATH)
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file.compress_type = zipfile.ZIP_DEFLATED
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archive.writestr(file, json.dumps(plate_desc).encode("UTF-8"))
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def _storeSliceInfo(self, archive: zipfile.ZipFile):
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"""Store slice information in the archive."""
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config = ET.Element("config")
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header = ET.SubElement(config, "header")
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ET.SubElement(header, "header_item", key="X-BBL-Client-Type", value="slicer")
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ET.SubElement(header, "header_item", key="X-BBL-Client-Version", value="02.00.01.50")
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plate = ET.SubElement(config, "plate")
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ET.SubElement(plate, "metadata", key="index", value="1")
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ET.SubElement(plate,
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"metadata",
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key="nozzle_diameters",
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value=str(CuraApplication.getInstance().getExtruderManager().getActiveExtruderStack().getValue("machine_nozzle_size")))
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print_information = CuraApplication.getInstance().getPrintInformation()
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for index, extruder in enumerate(Application.getInstance().getGlobalContainerStack().extruderList):
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used_m = print_information.materialLengths[index]
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used_g = print_information.materialWeights[index]
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if used_m > 0.0 and used_g > 0.0:
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ET.SubElement(plate,
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"filament",
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id=str(extruder.getValue("extruder_nr") + 1),
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tray_info_idx="GFA00",
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type=extruder.material.getMetaDataEntry("material", ""),
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color=self._writer._getMaterialColor(extruder),
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used_m=str(used_m),
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used_g=str(used_g))
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self._writer._storeElementTree(archive, SLICE_INFO_PATH, config)
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33
plugins/3MFWriter/DefaultVariant.py
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33
plugins/3MFWriter/DefaultVariant.py
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@ -0,0 +1,33 @@
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# Copyright (c) 2025 UltiMaker
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# Cura is released under the terms of the LGPLv3 or higher.
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import xml.etree.ElementTree as ET
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import zipfile
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from PyQt6.QtCore import QBuffer
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from PyQt6.QtGui import QImage
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from .ThreeMFVariant import ThreeMFVariant
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# Standard 3MF paths
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METADATA_PATH = "Metadata"
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THUMBNAIL_PATH = f"{METADATA_PATH}/thumbnail.png"
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class DefaultVariant(ThreeMFVariant):
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"""Default implementation of the 3MF format."""
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@property
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def mime_type(self) -> str:
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return "application/vnd.ms-package.3dmanufacturing-3dmodel+xml"
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def process_thumbnail(self, snapshot: QImage, thumbnail_buffer: QBuffer,
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archive: zipfile.ZipFile, relations_element: ET.Element) -> None:
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"""Process the thumbnail for default 3MF variant."""
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thumbnail_file = zipfile.ZipInfo(THUMBNAIL_PATH)
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# Don't try to compress snapshot file, because the PNG is pretty much as compact as it will get
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archive.writestr(thumbnail_file, thumbnail_buffer.data())
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# Add thumbnail relation to _rels/.rels file
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ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH, Id="rel1",
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Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail")
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74
plugins/3MFWriter/ThreeMFVariant.py
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74
plugins/3MFWriter/ThreeMFVariant.py
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@ -0,0 +1,74 @@
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# Copyright (c) 2025 UltiMaker
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# Cura is released under the terms of the LGPLv3 or higher.
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from abc import ABC, abstractmethod
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from typing import TYPE_CHECKING
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import xml.etree.ElementTree as ET
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import zipfile
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from PyQt6.QtGui import QImage
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from PyQt6.QtCore import QBuffer
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if TYPE_CHECKING:
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from .ThreeMFWriter import ThreeMFWriter
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class ThreeMFVariant(ABC):
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"""Base class for 3MF format variants.
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Different vendors may have their own extensions to the 3MF format,
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such as BambuLab's 3MF variant. This class provides an interface
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for implementing these variants.
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"""
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def __init__(self, writer: 'ThreeMFWriter'):
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"""
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:param writer: The ThreeMFWriter instance that will use this variant
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"""
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self._writer = writer
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@property
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@abstractmethod
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def mime_type(self) -> str:
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"""The MIME type for this 3MF variant."""
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pass
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def handles_mime_type(self, mime_type: str) -> bool:
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"""Check if this variant handles the given MIME type.
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:param mime_type: The MIME type to check
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:return: True if this variant handles the MIME type, False otherwise
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"""
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return mime_type == self.mime_type
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def prepare_content_types(self, content_types: ET.Element) -> None:
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"""Prepare the content types XML element for this variant.
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:param content_types: The content types XML element
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"""
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pass
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def prepare_relations(self, relations_element: ET.Element) -> None:
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"""Prepare the relations XML element for this variant.
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:param relations_element: The relations XML element
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"""
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pass
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def process_thumbnail(self, snapshot: QImage, thumbnail_buffer: QBuffer,
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archive: zipfile.ZipFile, relations_element: ET.Element) -> None:
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"""Process the thumbnail for this variant.
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:param snapshot: The snapshot image
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:param thumbnail_buffer: Buffer containing the thumbnail data
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:param archive: The zip archive to write to
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:param relations_element: The relations XML element
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"""
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pass
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def add_extra_files(self, archive: zipfile.ZipFile, metadata_relations_element: ET.Element) -> None:
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"""Add any extra files required by this variant to the archive.
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:param archive: The zip archive to write to
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:param metadata_relations_element: The metadata relations XML element
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"""
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pass
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@ -1,14 +1,11 @@
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# Copyright (c) 2015-2022 Ultimaker B.V.
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# Copyright (c) 2015-2025 UltiMaker
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# Cura is released under the terms of the LGPLv3 or higher.
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import hashlib
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from io import StringIO
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import json
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import re
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import threading
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from typing import Optional, cast, List, Dict, Pattern, Set
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from typing import Optional, cast, List, Dict, Set
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from UM.PluginRegistry import PluginRegistry
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from UM.Mesh.MeshWriter import MeshWriter
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@ -52,21 +49,15 @@ import UM.Application
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from .SettingsExportModel import SettingsExportModel
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from .SettingsExportGroup import SettingsExportGroup
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from .ThreeMFVariant import ThreeMFVariant
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from .DefaultVariant import DefaultVariant
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from .BambuLabVariant import BambuLabVariant
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from UM.i18n import i18nCatalog
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catalog = i18nCatalog("cura")
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MODEL_PATH = "3D/3dmodel.model"
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PACKAGE_METADATA_PATH = "Cura/packages.json"
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METADATA_PATH = "Metadata"
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THUMBNAIL_PATH = f"{METADATA_PATH}/thumbnail.png"
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THUMBNAIL_PATH_MULTIPLATE = f"{METADATA_PATH}/plate_1.png"
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THUMBNAIL_PATH_MULTIPLATE_SMALL = f"{METADATA_PATH}/plate_1_small.png"
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GCODE_PATH = f"{METADATA_PATH}/plate_1.gcode"
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GCODE_MD5_PATH = f"{GCODE_PATH}.md5"
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MODEL_SETTINGS_PATH = f"{METADATA_PATH}/model_settings.config"
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PLATE_DESC_PATH = f"{METADATA_PATH}/plate_1.json"
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SLICE_INFO_PATH = f"{METADATA_PATH}/slice_info.config"
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class ThreeMFWriter(MeshWriter):
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def __init__(self):
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@ -83,6 +74,12 @@ class ThreeMFWriter(MeshWriter):
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self._store_archive = False
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self._lock = threading.Lock()
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# Register available variants
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self._variants = {
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DefaultVariant(self).mime_type: DefaultVariant,
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BambuLabVariant(self).mime_type: BambuLabVariant
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}
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@staticmethod
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def _convertMatrixToString(matrix):
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result = ""
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@ -216,10 +213,23 @@ class ThreeMFWriter(MeshWriter):
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painter.end()
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def _getVariant(self, mime_type: str) -> ThreeMFVariant:
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"""Get the appropriate variant for the given MIME type.
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:param mime_type: The MIME type to get the variant for
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:return: An instance of the variant for the given MIME type
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"""
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variant_class = self._variants.get(mime_type, DefaultVariant)
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return variant_class(self)
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def write(self, stream, nodes, mode = MeshWriter.OutputMode.BinaryMode, export_settings_model = None, **kwargs) -> bool:
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self._archive = None # Reset archive
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archive = zipfile.ZipFile(stream, "w", compression = zipfile.ZIP_DEFLATED)
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add_extra_data = kwargs.get("mime_type", "") == "application/vnd.bambulab-package.3dmanufacturing-3dmodel+xml"
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# Determine which variant to use based on mime type in kwargs
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mime_type = kwargs.get("mime_type", DefaultVariant(self).mime_type)
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variant = self._getVariant(mime_type)
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try:
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model_file = zipfile.ZipInfo(MODEL_PATH)
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# Because zipfile is stupid and ignores archive-level compression settings when writing with ZipInfo.
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@ -239,11 +249,12 @@ class ThreeMFWriter(MeshWriter):
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# Create Metadata/_rels/model_settings.config.rels
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metadata_relations_element = self._makeRelationsTree()
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if add_extra_data:
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self._storeGCode(archive, metadata_relations_element)
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self._storeModelSettings(archive)
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self._storePlateDesc(archive)
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self._storeSliceInfo(archive)
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# Let the variant add its specific files
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variant.add_extra_files(archive, metadata_relations_element)
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# Let the variant prepare content types and relations
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variant.prepare_content_types(content_types)
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variant.prepare_relations(relations_element)
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# Attempt to add a thumbnail
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snapshot = self._createSnapshot()
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@ -259,32 +270,8 @@ class ThreeMFWriter(MeshWriter):
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# Add PNG to content types file
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thumbnail_type = ET.SubElement(content_types, "Default", Extension="png", ContentType="image/png")
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if add_extra_data:
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archive.writestr(zipfile.ZipInfo(THUMBNAIL_PATH_MULTIPLATE), thumbnail_buffer.data())
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extra_thumbnail_relation_element = ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH_MULTIPLATE, Id="rel-2",
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Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail")
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extra_thumbnail_relation_element_duplicate = ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH_MULTIPLATE, Id="rel-4",
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Type="http://schemas.bambulab.com/package/2021/cover-thumbnail-middle")
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small_snapshot = snapshot.scaled(128, 128, transformMode = Qt.TransformationMode.SmoothTransformation)
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small_thumbnail_buffer = QBuffer()
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small_thumbnail_buffer.open(QBuffer.OpenModeFlag.ReadWrite)
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small_snapshot.save(small_thumbnail_buffer, "PNG")
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archive.writestr(zipfile.ZipInfo(THUMBNAIL_PATH_MULTIPLATE_SMALL), small_thumbnail_buffer.data())
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thumbnail_small_relation_element = ET.SubElement(relations_element, "Relationship",
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Target="/" + THUMBNAIL_PATH_MULTIPLATE_SMALL, Id="rel-5",
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Type="http://schemas.bambulab.com/package/2021/cover-thumbnail-small")
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else:
|
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thumbnail_file = zipfile.ZipInfo(THUMBNAIL_PATH)
|
||||
# Don't try to compress snapshot file, because the PNG is pretty much as compact as it will get
|
||||
archive.writestr(thumbnail_file, thumbnail_buffer.data())
|
||||
|
||||
# Add thumbnail relation to _rels/.rels file
|
||||
thumbnail_relation_element = ET.SubElement(relations_element, "Relationship",
|
||||
Target="/" + THUMBNAIL_PATH, Id="rel1",
|
||||
Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/thumbnail")
|
||||
# Let the variant process the thumbnail
|
||||
variant.process_thumbnail(snapshot, thumbnail_buffer, archive, relations_element)
|
||||
|
||||
# Write material metadata
|
||||
packages_metadata = self._getMaterialPackageMetadata() + self._getPluginPackageMetadata()
|
||||
|
|
@ -369,94 +356,6 @@ class ThreeMFWriter(MeshWriter):
|
|||
file.compress_type = zipfile.ZIP_DEFLATED
|
||||
archive.writestr(file, b'<?xml version="1.0" encoding="UTF-8"?> \n' + ET.tostring(root_element))
|
||||
|
||||
def _storeGCode(self, archive: zipfile.ZipFile, metadata_relations_element: ET.Element):
|
||||
gcode_textio = StringIO() # We have to convert the g-code into bytes.
|
||||
gcode_writer = cast(MeshWriter, PluginRegistry.getInstance().getPluginObject("GCodeWriter"))
|
||||
success = gcode_writer.write(gcode_textio, None)
|
||||
|
||||
if not success:
|
||||
error_msg = catalog.i18nc("@info:error", "Can't write GCode to 3MF file")
|
||||
self.setInformation(error_msg)
|
||||
Logger.error(error_msg)
|
||||
raise Exception(error_msg)
|
||||
|
||||
gcode_data = gcode_textio.getvalue().encode("UTF-8")
|
||||
archive.writestr(zipfile.ZipInfo(GCODE_PATH), gcode_data)
|
||||
|
||||
gcode_relation_element = ET.SubElement(metadata_relations_element, "Relationship",
|
||||
Target=f"/{GCODE_PATH}", Id="rel-1",
|
||||
Type="http://schemas.bambulab.com/package/2021/gcode")
|
||||
|
||||
# Calculate and store the MD5 sum of the gcode data
|
||||
md5_hash = hashlib.md5(gcode_data).hexdigest()
|
||||
archive.writestr(zipfile.ZipInfo(GCODE_MD5_PATH), md5_hash.encode("UTF-8"))
|
||||
|
||||
def _storeModelSettings(self, archive: zipfile.ZipFile):
|
||||
config = ET.Element("config")
|
||||
plate = ET.SubElement(config, "plate")
|
||||
plater_id = ET.SubElement(plate, "metadata", key="plater_id", value="1")
|
||||
plater_id = ET.SubElement(plate, "metadata", key="plater_name", value="")
|
||||
plater_id = ET.SubElement(plate, "metadata", key="locked", value="false")
|
||||
plater_id = ET.SubElement(plate, "metadata", key="filament_map_mode", value="Auto For Flush")
|
||||
extruders_count = len(CuraApplication.getInstance().getExtruderManager().extruderIds)
|
||||
plater_id = ET.SubElement(plate, "metadata", key="filament_maps", value=" ".join("1" for _ in range(extruders_count)))
|
||||
plater_id = ET.SubElement(plate, "metadata", key="gcode_file", value=GCODE_PATH)
|
||||
plater_id = ET.SubElement(plate, "metadata", key="thumbnail_file", value=THUMBNAIL_PATH_MULTIPLATE)
|
||||
plater_id = ET.SubElement(plate, "metadata", key="pattern_bbox_file", value=PLATE_DESC_PATH)
|
||||
|
||||
self._storeElementTree(archive, MODEL_SETTINGS_PATH, config)
|
||||
|
||||
def _storePlateDesc(self, archive: zipfile.ZipFile):
|
||||
plate_desc = {}
|
||||
|
||||
filament_ids = []
|
||||
filament_colors = []
|
||||
|
||||
for extruder in CuraApplication.getInstance().getExtruderManager().getUsedExtruderStacks():
|
||||
filament_ids.append(extruder.getValue("extruder_nr"))
|
||||
filament_colors.append(self._getMaterialColor(extruder))
|
||||
|
||||
plate_desc["filament_ids"] = filament_ids
|
||||
plate_desc["filament_colors"] = filament_colors
|
||||
plate_desc["first_extruder"] = CuraApplication.getInstance().getExtruderManager().getInitialExtruderNr()
|
||||
plate_desc["is_seq_print"] = Application.getInstance().getGlobalContainerStack().getValue("print_sequence") == "one_at_a_time"
|
||||
plate_desc["nozzle_diameter"] = CuraApplication.getInstance().getExtruderManager().getActiveExtruderStack().getValue("machine_nozzle_size")
|
||||
plate_desc["version"] = 2
|
||||
|
||||
file = zipfile.ZipInfo(PLATE_DESC_PATH)
|
||||
file.compress_type = zipfile.ZIP_DEFLATED
|
||||
archive.writestr(file, json.dumps(plate_desc).encode("UTF-8"))
|
||||
|
||||
def _storeSliceInfo(self, archive: zipfile.ZipFile):
|
||||
config = ET.Element("config")
|
||||
|
||||
header = ET.SubElement(config, "header")
|
||||
header_type = ET.SubElement(header, "header_item", key="X-BBL-Client-Type", value="slicer")
|
||||
header_version = ET.SubElement(header, "header_item", key="X-BBL-Client-Version", value="02.00.01.50")
|
||||
|
||||
plate = ET.SubElement(config, "plate")
|
||||
index = ET.SubElement(plate, "metadata", key="index", value="1")
|
||||
nozzle_diameter = ET.SubElement(plate,
|
||||
"metadata",
|
||||
key="nozzle_diameters",
|
||||
value=str(CuraApplication.getInstance().getExtruderManager().getActiveExtruderStack().getValue("machine_nozzle_size")))
|
||||
|
||||
print_information = CuraApplication.getInstance().getPrintInformation()
|
||||
for index, extruder in enumerate(Application.getInstance().getGlobalContainerStack().extruderList):
|
||||
used_m = print_information.materialLengths[index]
|
||||
used_g = print_information.materialWeights[index]
|
||||
if used_m > 0.0 and used_g > 0.0:
|
||||
filament = ET.SubElement(plate,
|
||||
"filament",
|
||||
id=str(extruder.getValue("extruder_nr") + 1),
|
||||
tray_info_idx="GFA00",
|
||||
type=extruder.material.getMetaDataEntry("material", ""),
|
||||
color=self._getMaterialColor(extruder),
|
||||
used_m=str(used_m),
|
||||
used_g=str(used_g))
|
||||
|
||||
self._storeElementTree(archive, SLICE_INFO_PATH, config)
|
||||
|
||||
def _makeRelationsTree(self):
|
||||
return ET.Element("Relationships", xmlns=self._namespaces["relationships"])
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue