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Browser-based 3D GUI for the SSR
================================
The auto-generated files for the browser GUI are contained in the tarball within
the `data/websocket_resources` directory.
When running `make install`, these files are copied to
`/usr/local/share/ssr/websocket_resources`
(unless a different `--prefix` has been specified).
Given that the WebSocket interface is enabled, the SSR will automatically serve
the resources for the 3D GUI.
Simply connect with a browser to http://localhost:9422/index.html.
You can change the server port with the option `--websocket-server=9999`
(or whatever port you want to use).
Building the Files
------------------
If you want to build the files yourself,
you need to install the [Yarn] package manager.
Note that the official Debian/Ubuntu package is called `yarnpkg` and the
executable is also called `yarnpkg` and not `yarn`!
[Yarn]: https://yarnpkg.com/en/docs/install
If `yarn` (or `yarnpkg`) is available, the browser GUI resources are
automatically created when running `make`.
If you want to make generating the GUI files explicit, use
./configure --enable-browser-gui
If you make changes to the source files,
you'll have to run `make` and `make install` again.
During Development
------------------
You can also build the files outside the SSR build system,
i.e. without using `make` and `make install`.
Initially, you need to install all necessary `npm` packages:
yarn install
You can build the GUI files with:
yarn run build
During development, it is very handy if any change to the source files is
detected and the generated files are updated automatically.
You can achieve that by running:
yarn run serve
This will build the GUI, serve it at http://localhost:8080/ and automatically
update the browser whenever changes are made to any source file.
If you want this to automatically open your favorite web browser
and show the freshly built SSR GUI, use:
yarn run serve --open
If you want to use a different browser, just pass it along, e.g.:
yarn run serve --open chromium
Maintenance
-----------
Just for the record, the original `package.json` was:
```json
{
"private": true,
"scripts": {
"serve": "webpack serve",
"build": "webpack"
}
}
```
We don't intend to publish the SSR GUI as a package on https://www.npmjs.com/,
therefore we have used `"private": true` and we didn't have to specify most of
the fields a normal `npm` package has.
The only thing we needed to get started, are the settings for [webpack].
Speaking of which, [webpack] was installed with:
yarn add --dev webpack webpack-cli webpack-dev-server
yarn add --dev imports-loader style-loader css-loader
And we needed [three.js] for all the fancy 3D stuff:
yarn add three
[webpack]: https://webpack.js.org/
[three.js]: https://threejs.org/
Several other packages are needed, `yarn run build` will mention those.
Whenever needed, packages can be upgraded with `yarn upgrade`,
added with `yarn add` (using `--dev` for packages only needed for development)
and removed with `yarn remove`.
Note: The file `yarn.lock` is supposed to be checked into version control.
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