## [VTK.js - The Visualization Toolkit for JavaScript](http://kitware.github.io/vtk-js/)

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Introduction
============

**[This is a fork](https://github.com/Kitware/vtk-js). All credits and copyright go to the original authors and maintainers.**

**See the license file in the repository or distributed with the npm package.**

This fork is based on VTK 16, before the introduction of ESM modules and subsequent breaking changes. It aims to allow the use of some pieces of VTK in a web worker context.

VTK is an open-source software system for image processing, 3D
graphics, volume rendering and visualization. VTK includes many
advanced algorithms (e.g., surface reconstruction, implicit modelling,
decimation) and rendering techniques (e.g., hardware-accelerated
volume rendering, LOD control). The JavaScript implementation remains
a subset of the actual C++ library but efforts will be made to easily
port or compile native VTK code into WebAssembly to better blend
both worlds. vtk.js is a true rewrite of VTK in plain JavaScript (ES6).
Therefore not everything has been rewritten.

The origin of VTK is with the textbook "The Visualization Toolkit, an
Object-Oriented Approach to 3D Graphics" originally published by
Prentice Hall and now published by Kitware, Inc. (Third Edition ISBN
1-930934-07-6). VTK has grown (since its initial release in 1994) to a
world-wide user base in the commercial, academic, and research
communities.

vtk.js aims to be a subset of VTK and provide 3D rendering using WebGL
for both geometry and volume rendering.

Reporting Bugs
==============

If you have found a bug:

1. If you have a patch, please read the [CONTRIBUTING.md][] document.

2. Otherwise, please join the one of the [VTK Mailing Lists][] and ask
   about the expected and observed behaviors to determine if it is
   really a bug.

3. Finally, if the issue is not resolved by the above steps, open
   an entry in the [VTK Issue Tracker][].

[CONTRIBUTING.md]: CONTRIBUTING.md
[VTK Mailing Lists]: https://www.vtk.org/mailing-lists/
[VTK Issue Tracker]: https://github.com/Kitware/vtk-js/issues

Requirements
============

In general VTK tries to be as portable as possible; the specific configurations below are known to work and tested.

vtk.js supports the following development environments:

- Node 8+
- NPM 6+

and we use [@babel/preset-env](https://www.npmjs.com/package/@babel/preset-env) with the [defaults](https://github.com/Kitware/vtk-js/blob/master/.browserslistrc) set of [browsers target](https://browserl.ist/?q=defaults).
But when built from source this could be adjusted to support any browser as long they provide WebGL.

Documentation
=============

See the [documentation](https://kitware.github.io/vtk-js) for a
getting started guide, advanced documentation, and API descriptions.

Contributing
============

See [CONTRIBUTING.md](CONTRIBUTING.md) for instructions to contribute.

License
=======

VTK is distributed under the OSI-approved BSD 3-clause License.
See [Copyright.txt][] for details.

[Copyright.txt]: Copyright.txt