File size: 3,389 Bytes
406662d | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | # Copyright (c) 2022-2026, The Isaac Lab Project Developers (https://github.com/isaac-sim/IsaacLab/blob/main/CONTRIBUTORS.md).
# All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
"""Convert all mesh files to `.obj` in given folders."""
import argparse
import os
import shutil
import subprocess
# Constants
# Path to blender
BLENDER_EXE_PATH = shutil.which("blender")
def parse_cli_args():
"""Parse the input command line arguments."""
# add argparse arguments
parser = argparse.ArgumentParser("Utility to convert all mesh files to `.obj` in given folders.")
parser.add_argument("input_dir", type=str, help="The input directory from which to load meshes.")
parser.add_argument(
"-o",
"--output_dir",
type=str,
default=None,
help="The output directory to save converted meshes into. Default is same as input directory.",
)
args_cli = parser.parse_args()
# resolve output directory
if args_cli.output_dir is None:
args_cli.output_dir = args_cli.input_dir
# return arguments
return args_cli
def run_blender_convert2obj(in_file: str, out_file: str):
"""Calls the python script using `subprocess` to perform processing of mesh file.
Args:
in_file: Input mesh file.
out_file: Output obj file.
"""
# resolve for python file
tools_dirname = os.path.dirname(os.path.abspath(__file__))
script_file = os.path.join(tools_dirname, "blender_obj.py")
# complete command
command_exe = f"{BLENDER_EXE_PATH} --background --python {script_file} -- -i {in_file} -o {out_file}"
# break command into list
command_exe_list = command_exe.split(" ")
# run command
subprocess.run(command_exe_list)
def convert_meshes(source_folders: list[str], destination_folders: list[str]):
"""Processes all mesh files of supported format into OBJ file using blender.
Args:
source_folders: List of directories to search for meshes.
destination_folders: List of directories to dump converted files.
"""
# create folder for corresponding destination
for folder in destination_folders:
os.makedirs(folder, exist_ok=True)
# iterate over each folder
for in_folder, out_folder in zip(source_folders, destination_folders):
# extract all dae files in the directory
mesh_filenames = [f for f in os.listdir(in_folder) if f.endswith("dae")]
mesh_filenames += [f for f in os.listdir(in_folder) if f.endswith("stl")]
mesh_filenames += [f for f in os.listdir(in_folder) if f.endswith("STL")]
# print status
print(f"Found {len(mesh_filenames)} files to process in directory: {in_folder}")
# iterate over each OBJ file
for mesh_file in mesh_filenames:
# extract meshname
mesh_name = os.path.splitext(mesh_file)[0]
# complete path of input and output files
in_file_path = os.path.join(in_folder, mesh_file)
out_file_path = os.path.join(out_folder, mesh_name + ".obj")
# perform blender processing
print("Processing: ", in_file_path)
run_blender_convert2obj(in_file_path, out_file_path)
if __name__ == "__main__":
# Parse command line arguments
args = parse_cli_args()
# Run conversion
convert_meshes([args.input_dir], [args.output_dir])
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