This library was created by Nikolas Klein and Christoph Labacher during an Invention Design course by Prof. Jörg Beck and Prof. David Oswald at Hochschule für Gestaltung Schwäbisch Gmünd. The project included tactile feeback with sound design by Werner Schäfner.
We wrote two high-length Medium articles about our process and results.
- Historical application of foot-based interaction
- Possible contexts of use in a modern, digital space
- Defining the focus of our development
- User-centered introduction
- A look ahead
- Closing thoughts
Disclaimer: We didn't go into the actual LeapMotion-Library code. Since the LeapMotion is obviously optimised for tracking hands, tracking a foot is not working properly often times. Most times we stuck a cut-out hand to the foot: It looks a bit weird, but it works great!
The X- and Y-Position of the foot is saved every frame with some additional data in what is called a Moment. The last 250 Moments are being kept in an array.
A continous movement in one direction during several Moments is saved into a Movement, that includes a start- and endpostion and -time as well as a velocity.
If a certain pattern of Moments or Movements is recognized, a Gesture is created, that contains information about those Moments or Movements. An Gesture-Event is fired as well.
A selection interface is abstracted into an object, so it can be reused. There are various parameters to control the selection and its select or unselect callbacks. Using a soundmanager sound are being played on hover, select or unselect.
Multiple demos are included in various branches: more abstract ones, like a presentation of different visualisations for the position and movement of the foot, an visualisation in order to teach useres how to trigger a swipe and various examples of selections; but also an image gallery, that is controlled by swipes and includes a selection to favorite or delete images.
We developed several applications to introduce the user to using his feet to controll a digital interface. They can be found in the various brachnes of the project.
The MIT License (MIT) Copyright (c) 2015 Nikolas Klein & Christoph Labacher
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