Rocket Serializer

rocketserializer is a Python library that provides serialization capabilities for OpenRocket files. It allows you to read OpenRocket files (.ork) using a simple and intuitive command line interface. After serializing the file, you can use the data to create your RocketPy simulation.

Example

Installation

You can install rocketserializer using pip:

pip install rocketserializer

Requirements

Java

You need Java to be installed on your system to use rocketserializer. We recommend downloading Java 17, which is required to run OpenRocket-23.09.

https://www.oracle.com/java/technologies/downloads/

OpenRocket

You also need to download the OpenRocket JAR file. You can download it from the following link:

https://openrocket.info/downloads.html?vers=23.09#content-JAR

Each version of OpenRocket has its own jar file, and it is important to use the correct java version to run the jar file.

Python Packages

Once you download the rocketserializer package, the following dependencies will be automatically installed:

• bs4
• click>=8.0.0
• lxml
• numpy
• orhelper==0.1.3
• pyyaml
• rocketpy>=1.1.0
• nbformat>=5.2.0

Usage - command line interface

The rocketserializer package will automatically install 2 command-line-interface (cli) options, here's an example:

Serialization

To create a parameters.json file from an OpenRocket file, use the following command:

ork2json --filepath your_rocket.ork

Or, for a more verbose output, you can use the following command:

ork2json --filepath your_rocket.ork --verbose True

The options are the following:

• --filepath: The .ork file to be serialized.
• --output : Path to the output folder. If not set, the output will be saved in the same folder as the filepath.
• --ork_jar : Specify the path to the OpenRocket jar file. If not set, the library will try to find the jar file in the current directory.
• --encoding : The encoding of the .ork file. By default, it is set to utf-8.
• --verbose : If you want to see the progress of the serialization, set this option to True. By default, it is set to False.

Only the --filepath option is mandatory.

Creating a simulation notebook

ork2notebook --filepath your_rocket.ork

The options are pretty much the same as the serialization command!

Limitations

This code won't work for your rocket if it has any of the following features:

• Your .ork file must be saved in English
• Your .ork file must be saved with at least 1 simulation data
• Only one single stage is supported
• Only a single motor is supported
• Only a single nose cone is supported

Roadmap

• 2024 June : First public release, start receiving feedback from the community.

Before the first public release, we will listen to the community's feedback before defining the roadmap for the next releases.

Contact

If you find any bug or if you want to request new features, please open an issue on GitHub. In case you don't have a GitHub account, you can reach out to us on RocketPy's Discord server.

How to Contribute

The 3 main ways of contributing to this project are:

1. Reporting bugs and suggesting new features.
   • Use GitHub, preferably, to report bugs and suggest new features.
   • In case you don't have a GitHub account, you can reach out to us on RocketPy's Discord server
2. Sharing .ork files that can be used to test the library.
   • If you have a .ork file that is not working with the library, please share it with us.
   • If you have a .ork file that is working with the library, please share it with us.
   • If you allow us to use and share your .ork file, we can add it to the test suite.
3. Developing new features and fixing bugs thorough pull requests on GitHub.
   • If you want to develop new features, you are more than welcome to do so.
   • Please reach out to the maintainers to discuss the new feature before starting the development.