Dessia-tech / nurbs

Object-oriented pure Python B-Spline and NURBS library

Nurbs

Introduction

nurbs is a fork of geomdl.

NURBS-Python (geomdl) is a pure Python, self-contained, object-oriented B-Spline and NURBS spline library for Python versions 2.7.x, 3.4.x and later.

The following article <https://doi.org/10.1016/j.softx.2018.12.005>_ outlines the design and features of NURBS-Python (geomdl). I would be glad if you would cite it if you have used NURBS-Python (geomdl) in your research::

@article{bingol2019geomdl,
  title={{NURBS-Python}: An open-source object-oriented {NURBS} modeling framework in {Python}},
  author={Bingol, Onur Rauf and Krishnamurthy, Adarsh},
  journal={{SoftwareX}},
  volume={9},
  pages={85--94},
  year={2019},
  publisher={Elsevier},
  doi={https://doi.org/10.1016/j.softx.2018.12.005}
}

Features

NURBS-Python (geomdl) provides convenient data structures and highly customizable API for rational and non-rational splines along with the efficient and extensible implementations of the following algorithms:

• Spline evaluation
• Derivative evaluation
• Knot insertion
• Knot removal
• Knot vector refinement
• Degree elevation
• Degree reduction
• Curve and surface fitting via interpolation and least squares approximation

NURBS-Python (geomdl) also provides customizable visualization and animation options via Matplotlib, Plotly and VTK libraries. Please refer to the documentation <http://nurbs-python.readthedocs.io/>_ for more details.

Installation

The easiest way to install NURBS-Python (geomdl) is using pip:

.. code-block:: console

$ pip install --user geomdl

It is also possible to install NURBS-Python (geomdl) using conda:

.. code-block:: console

$ conda install -c orbingol geomdl

Please refer to the Installation and Testing <http://nurbs-python.readthedocs.io/en/latest/install.html>_ section of the documentation for alternative installation methods.

Examples and Documentation

• Examples: https://github.com/orbingol/NURBS-Python_Examples
• Documentation: http://nurbs-python.readthedocs.io/
• Wiki: https://github.com/orbingol/NURBS-Python/wiki

Extra Modules

• Command-line application: https://github.com/orbingol/geomdl-cli
• Shapes module: https://github.com/orbingol/geomdl-shapes
• Rhino importer/exporter: https://github.com/orbingol/rw3dm
• ACIS exporter: https://github.com/orbingol/rwsat

Author

• Onur R. Bingol (@orbingol <https://github.com/orbingol>_), original author of geomdl
• Dessia Technologies

Acknowledgments

Please see CONTRIBUTORS.rst <CONTRIBUTORS.rst>_ file for the acknowledgements.

License

NURBS-Python (geomdl) is licensed under the terms of MIT License <LICENSE>_ and it contains the following modules:

• six is licensed under the terms of MIT License <https://github.com/benjaminp/six/blob/1.12.0/LICENSE>_
• backports.functools_lru_cache is licensed under the terms of MIT License <https://github.com/jaraco/backports.functools_lru_cache/blob/1.5/LICENSE>_