[Blender] Added script to load the PCB3D and export various formats
This commit is contained in:
Salvador E. Tropea
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# -*- coding: utf-8 -*-
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# Copyright (c) 2023 Salvador E. Tropea
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# Copyright (c) 2023 Instituto Nacional de Tecnología Industrial
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# License: GPL-3.0
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# Project: KiBot (formerly KiPlot)
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# Based on:
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# - background_job.py: Blender example
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# https://developer.blender.org/diffusion/B/browse/master/release/scripts/templates_py/background_job.py
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# - blender_pcb2gltf.py: PCB3D to various formats
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# https://github.com/Haschtl/pcb2blender/blob/master/CI/blender_pcb2gltf.py
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#
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# Should be invoked using:
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# blender -b --factory-startup -P blender_export.py -- OPTIONS
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import addon_utils
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import bpy
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VALID_FORMATS = {'fbx': 'Filmbox, proprietary format developed by Kaydara (owned by Autodesk)',
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'obj': 'geometry definition format developed by Wavefront Technologies. Currently open',
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'x3d': 'VRML successor. A royalty-free ISO/IEC standard for declaratively representing 3D graphics.',
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'blender': 'Blender native format',
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'gltf': 'standard file format for three-dimensional scenes and models.',
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'stl': '3D printing from stereolithography CAD software created by 3D SystemsSTL (only mesh)',
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'ply': 'Polygon File Format or the Stanford Triangle Format (only mesh)'}
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def fbx_export(name):
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bpy.ops.export_scene.fbx(filepath=name)
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def obj_export(name):
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bpy.ops.export_scene.obj(filepath=name)
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def x3d_export(name):
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bpy.ops.export_scene.x3d(filepath=name)
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def stl_export(name):
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bpy.ops.export_mesh.stl(filepath=name)
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def ply_export(name):
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bpy.ops.export_mesh.ply(filepath=name)
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def blender_export(name):
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bpy.ops.wm.save_as_mainfile(filepath=name)
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def gltf_export(name):
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bpy.ops.export_scene.gltf(filepath=name, export_copyright="KiBot", export_draco_mesh_compression_enable=True,
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export_draco_mesh_compression_level=6, export_colors=False, export_yup=True)
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EXPORTERS = {'fbx': fbx_export,
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'obj': obj_export,
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'x3d': x3d_export,
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'stl': stl_export,
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'ply': ply_export,
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'blender': blender_export,
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'gltf': gltf_export}
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def main():
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import argparse # to parse options for us and print a nice help message
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import os
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import sys # to get command line args
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# get the args passed to blender after "--", all of which are ignored by
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# blender so scripts may receive their own arguments
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argv = sys.argv
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if "--" not in argv:
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argv = [] # as if no args are passed
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else:
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argv = argv[argv.index("--")+1:] # get all args after "--"
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description = ("Blender script to export PCB3D files into various formats.\n"
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"The pcb2blender_importer plug-in must be installed.\n"
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"Consult: https://github.com/30350n/pcb2blender")
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prog = "blender -b --factory-startup -P blender_export.py --"
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epilog = "Valid formats:\n"
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for f, desc in VALID_FORMATS.items():
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epilog += f"{f}: {desc}\n"
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parser = argparse.ArgumentParser(description=description, prog=prog, epilog=epilog,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument("-c", "--no_components", action="store_false", help="if the PCB components are discarded")
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parser.add_argument("-C", "--dont_cut_boards", action="store_false", help="do not separate sub-PCBs")
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parser.add_argument("-d", "--texture_dpi", type=float, help="textures density [508-2032] [1016]", default=1016.0)
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parser.add_argument("-D", "--dont_center", action="store_false", help="do not center the PCB at 0,0")
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parser.add_argument("-E", "--dont_enhance_materials", action="store_false", help="do not enhance materials")
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parser.add_argument("-f", "--format", type=str, required=True, nargs='+', choices=VALID_FORMATS.keys(),
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help="output formats to export, can be repeated")
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parser.add_argument("-m", "--pcb_material", type=str, choices=["RASTERIZED", "3D"], default="RASTERIZED",
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help="Rasterized (Cycles) or 3D (deprecated) [RASTERIZED]")
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parser.add_argument("-M", "--dont_merge_materials", action="store_false", help="do not merge materials")
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parser.add_argument("-o", "--output", type=str, required=True, nargs='+', help="output file name, can be repeated")
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parser.add_argument("-s", "--solder_joints", type=str, choices=["NONE", "SMART", "ALL"], default="SMART",
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help="Add none, all or only for THT/SMD with solder paste [SMART]")
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parser.add_argument("-S", "--dont_stack_boards", action="store_false", help="do not stack sub-PCBs")
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parser.add_argument('PCB3D_file')
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args = parser.parse_args(argv)
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nformats = len(args.format)
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if nformats != len(args.output):
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print("Please use -f and -o the same amount of times")
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sys.exit(2)
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print("Importing PCB3D file ...")
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PCB3D_file = os.path.abspath(args.PCB3D_file)
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# Start with fresh settings
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bpy.ops.wm.read_factory_settings(use_empty=True)
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# Now enable the plug-in
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addon_utils.enable("pcb2blender_importer")
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# Import the PCB3D file
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bpy.ops.pcb2blender.import_pcb3d(filepath=PCB3D_file, pcb_material=args.pcb_material,
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import_components=args.no_components,
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add_solder_joints=args.solder_joints,
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center_pcb=args.dont_center,
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merge_materials=args.dont_merge_materials,
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enhance_materials=args.dont_enhance_materials,
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cut_boards=args.dont_cut_boards,
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stack_boards=args.dont_stack_boards,
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texture_dpi=args.texture_dpi)
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# Do all the exports
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for f, o in zip(args.format, args.output):
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print(f"Exporting {o} in {f} format")
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EXPORTERS[f](os.path.abspath(o))
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print("batch job finished, exiting")
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if __name__ == "__main__":
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main()
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