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Adding Multitouch capabilities to a data visualisation

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Downloads

Download the example files for this week here.

Multitouch displays

We have access some multitouch display test units that will eventually form part of a much larger touch screen display, called “The Cube”, which will be built as part of the new QUT Science and Technology precinct.

The multitouch technology we are using is by a company called “Multitouch LTD“.

Have a look at some of the case studies to see what people are doing with this technology.

Multitouch Flash SDK

The multitouch display technology communicates touch events over a standard network protocol called TUIO so you could feasibly develop in any environment you like.  To reduce a lot of the work to do with processing touch events we can use the provided Flash SDK for creating multitouch applications called “Cornerstone“.

Normally you need a special account to download the flash sdk, but I have provided a link for you to download it here.  I have also included the sdk along with the downloadable example files.

Emulating the Multitouch Hardware with a Mouse and Keyboard

See here for instructions on emulating multitouch events with a mouse and keyboard when you are testing without access to the multitouch display technology.

Example 1

This example displays multiple different information graphics and allows the user to move and resize each with multitouch gestures for side-by-side comparison.

Information graphics are from informationisbeautiful.net. *note these graphics are used for the purpose of demonstrating functionality only. For your assignment you must create all the information graphics.

Example 2

This example uses multitouch gestures to enable the user to zoom in and out of a very large information graphic that is too big to comfortably fit on the screen all at once.


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