Preso 2

Hello all,

I'm a university computer science student just going into my second
year, and I've recently been doing an internship with Osmosoft. During
my time there, I've worked on a new TiddlySpace application, "Preso
2".

Preso 2 is a Zoomable User Interface that takes your tiddlers and
displays them on a 2-dimensional plane in different positions and
sizes. Moving around the plane is made easy by dragging the
background, or clicking on specific tiddlers to "zoom" to them.
Clicking on the background zooms out to display all the tiddlers.

The positions and dimensions of tiddlers are stored in the tiddler
MyMap, which you will need to create and experiment with if you want
to customize the positions of tiddlers in Preso 2. The title of each
tiddler to be positioned should be placed on a separate line in MyMap,
followed by its x position, y position, width & height measured in
pixels and written in that order, separated by spaces. (e.g.
"HelloThere 100 200 500 400")

The application is a development from Preso (preso.tiddlyspace.com)
and aims to take its functionality and package it into a TiddlySpace
app. There are a number of reasons why this was important:

- A TiddlySpace app is a unique way of presenting tiddlers in your
space. The original Preso instead modified your space's TiddlyWiki so
you could no longer use TiddlyWiki in its own right. Now, Preso is a
completely separate application.

- Preso 2 is built on new Tiddlyweb APIs so it no longer relies on
TiddlyWiki to work. This has a number of advantages, such as lazy
loading of tiddlers which allows Preso 2 to start much quicker, and
provides a reference for future developers of TiddlySpace apps.

- Preso 2 is built with open source libraries Zoomooz and jQuery
Touché that bring mult-touch support to iOS and Android portable
devices.

If you have a space on TiddlySpace, you can now access Preso 2 from
the app switcher in the top right of the page, or go to
yourspace.tiddlyspace.com/present. The app currently has limited
functionality and no editing features, so you will have to edit
tiddlers in TiddlyWiki or Take Note, but this functionality is
planned.

The project is available on GitHub so developers can fork it or
include the preso2.tiddlyspace.com space and edit the tiddlers to
experiment. It would be real great to get some feedback on the
project, and what you'd like to see Preso 2 do, so do please report
your findings in this discussion.

Thanks,
Hugh

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