The software on-board the smart glasses is being built to show portals at particular locations. Ultimately we would like to give heritage sites the ability to set such locations for themselves; and perhaps choose partiular ones to tie in with events going on. We also found that we needed a quick way to adjust portal locations when setting things up.

We decided to ‘bit the bullet’ and make a Portals web application for doing this quickly. An early implementation can be found in the technical notes section at http://www.ogglebox.com/technotes/portals/.

Until this time we had been hand-coding locations, which was getting pretty hard work! With this new method, the web application automatically outputs a text file which can be transferred to the smart glasses by USB to update the portal locations.

Portals Configuration Screenshot

Screenshot from Portals web application.

A screen-shot from the web application is shown above. The example map and portals are from a nearby park. Of course we’re not going to tell you where the Bosworth portals are hidden - that would spoil the fun!

The round dots indicate desired portal locations. The turqoise shaded areas near each one indicate the desired range of visibility, that is to say the area where the user must stand in order to be able to see a portal when they look towards it. There are smaller areas, marked in red, which show desired range of triggering. The idea is that when the user is in a triggering region and looks towards a portal, then it will begin to trigger, meaning that the plasma vortex of the portal will swirl with increasing vigour, until it transforms into a ‘scene from the past’.

The portal locations and regions can all be adjusted via the Portals web application. The portal in the centre of the above image is in the process of being edited, which is why it appears with extra round blobs. These are function as ‘handles’ to adjust the portal using the mouse.