===========
Web Version
===========

WebGL
-----

.. note::

   SpinDrops-Web requires a browser that supports WebGL 1.0, you can
   verify your browser's WebGL support here: http://webglreport.com

   The SpinDrops-web preference settings can be |location_link_RESET|.
   
   You can also remove all settings and saved sequences by clearing
   the "website data" from your browser for the *web.spindrops.org*
   website -- the procedure for this varies from browser to browser,
   we recommend googleing the correct procedure for your browser:

   - `Firefox <https://www.google.com/search?q=clear+website+data+firefox>`_
   - `Chrome <https://www.google.com/search?q=clear+website+data+chrome>`_
   - `Safari <https://www.google.com/search?q=clear+website+data+safari>`_
   - `Internet Explorer <https://www.google.com/search?q=clear+website+data+internet+explorer>`_


.. |location_link_RESET| raw:: html

   <a
   href="http://web.spindrops.org/2.0.4/SpinDrops.html?--reset"
   target="_blank"> reset by clicking here.</a> (this link will open a
   new browser tab).


Saving Changes
--------------

Browser-based applications are sandboxed in the browser, making it
impossible for the app to access files on your computer. This is to
prevent malicious websites from accessing or corrupting your data,
however it also prevents SpinDrops-web from storing changes to
sequences, pulses, and the application preferences on your filesystem.
Instead, SpinDrops-web uses the browsers per-website local storage
area called the `IndexedDB` to store your changes and new sequences
and workspaces.  Using :ref:`File --> Export Project... <Export
Project...>` you can save the entire workspace state as a file on
your local machine.

Differences to Binary SpinDrops
-------------------------------

There are a few differences between SpinDrops-web and the desktop/mobile
applications:

- Preferences and Sequences are saved less often, and may not be saved
  at all if SpinDrops' window or tab is closed without warning.
- Multi-finger gestures do not work, except whatever might map to a
  scroll-wheel on a particular OS + Browser combination.
- ctrl-w does not close the currently open window within SpinDrops,
  rather it probably closes your browser tab.  Beware!
- Graphics aren't multi-sampled, so images look jagged compared to the
  iOS, Android, and desktop SpinDrops.
- The simulation is running in a JavaScript engine, so it will be
  somewhat slower than the native :ref:`binary applications <Download
  / Install>`.