opcut

https://opcut.kopic.xyz/

opcut is cutting stock problem optimizer utilizing multiple panels and guillotine cuts (end-to-end cuts). This project includes:

multiple back-end optimizer implementations
command line front-end
REST service API (OpenAPI definition)
single-page web application front-end

Git repository is available at https://github.com/bozokopic/opcut.git.

Public instance https://opcut.kopic.xyz/ is constrained with limited resources and should be used only for functionality evaluation purposes. In case of complex and repetitive calculations, please consider running self hosted instance.

Runtime requirements

python >=3.10

Install

Archlinux

opcut is available as AUR package:

$ yay -S opcut

Windows

Windows distribution, with embedded python, is available at GitHub releases.

This archive contains opcut-server.cmd, which can be used for running server application, and opcut.cmd as generic opcut action launcher.

Python wheel

Opcut is available as PyPI project:

$ pip install opcut

Docker

opcut server is available as Docker image:

$ docker run -p 8080:8080 bozokopic/opcut

Usage

opcut command is interface for execution of three distinct actions:

opcut calculate …

Calculation of cutting stock problem. Input parameters and result is formatted as JSON data (JSON, YAML or TOML).
opcut generate …

Generate output representation (SVG, PDF, …) based on calculation result.
opcut server …

Run HTTP server providing single-page web application interface and OpenAPI interface (default listening address is http://0.0.0.0:8080).

For additional command line arguments and documentation, run:

$ man 1 opcut

JSON schema describing data structures is available at schemas/opcut.yaml.

OpenAPI definition is available at schemas/openapi.yaml.

opcut calculate

Example:

$ opcut calculate --input-format yaml --output result.json << EOF
cut_width: 1
panels:
    panel1:
        width: 100
        height: 100
items:
    item1:
        width: 10
        height: 10
        can_rotate: false
EOF

opcut generate

Example:

$ opcut generate --output output.pdf result.json

opcut server

Example:

$ opcut server

Development requirements

C99 compiler (gcc, clang, …)
nodejs >=7
npm

Build

Build tool used for opcut is pydoit (http://pydoit.org/). It can be installed together with other python dependencies by running:

$ pip install -r requirements.pip.txt

For listing available doit tasks, use:

$ doit list

Default task:

$ doit

creates wheel package inside build directory.

TODO

unit tests
changelog
mailing list
roadmap

Contributing

This project is currently in “proof of concept” state and is not yet recommended for production usage.

Any kind of help in development of this project is appreciated.

Issues and feature requests can be submitted to issue tracker.

Repository changes can be sent as patches over email (Github pull request are also acceptable until dedicated mailing list is set up). Changes containing new functionality or other significant changes should be discussed prior to sending patch.

For any questions regarding this project, contact me at bozo@kopic.xyz.

License

opcut - cutting stock problem optimizer

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>.

Metadata

Release files for opcut 0.4.16

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distribution (wheel)

Table of built distributions (wheels) for opcut 0.4.16
File	Interpreter	ABI	Platform	Reset
opcut-0.4.16-cp310.cp311.cp312.cp313-none-manylinux_2_24_x86_64.whl 184.7 kB Mar 23, 2025	CPython 3.10, CPython 3.13, CPython 3.11, CPython 3.12	none	Linux glibc 2.24+ x86-64	Details

Release files / opcut-0.4.16-cp310.cp311.cp312.cp313-none-manylinux_2_24_x86_64.whl

Download URL	opcut-0.4.16-cp310.cp311.cp312.cp313-none-manylinux_2_24_x86_64.whl
Size	184.7 kB
Tags	CPython 3.10 CPython 3.11 CPython 3.12 CPython 3.13 Linux glibc 2.24+ x86-64
SHA-256 checksum How to use checksums	`7350d84dabd3748a957519278383df0fdb55b5a467f0b113ba48d3352a60f6a9`
BLAKE2b-256 checksum How to use checksums	`701fbdf03f765919e676d045c8946b23ad3974c1c6f60b13307e2ec652d475db`
Upload date	Mar 23, 2025
Uploaded using Trusted Publishing? What is trusted publishing?	No
Uploaded via	`twine/6.0.1 CPython/3.13.2`