» Lightstrive
This site relies heavily on Javascript. You should enable it if you want the full experience. Learn more.

Lightstrive

Lightstrive - an interactive light projection

As part of the Catch the Light program accompanying the olympic games in Athens in August 2004 we've been invited to realize one of the 9 installations that have been setup throughout the city.

The fassade of a building is illuminated by a virtual lightsource that can be played with like a ball thus creating different lighting for the fassade every moment.

Team

  • Michael Höpfel
  • Sebastian Gregor
  • joreg

Additional credits go to Michael Mehling for last minute programming at meso, Michael Mehling and Jenny Michel for their help on setting up the hardware and to Adi and Marianna as our fabulous production team in Athens.

Further documentation on:

Movie

">tiki-download_file.php?fileId=15' type='video/mp4'>

Making Of

Lightstrive is completely realized with our inhouse developed graphical programming language vvvv and runs on two standard windows pcs with current graphics hardware.

The audience is being tracked by a low latency firewire camera mounted high above on the opposite building viewing the whole interactive zone of about 22m. Direction and power of the users movement is extracted by analysing the video over time. A resulting vector is used to update the lights/balls movement that is otherwise being calculated by a physics engine that also includes the facades geometry in its calculations. Therefore the light/ball can also be caught in one of fhe balconies in which case the game restarts.

The lights/balls current coordinate is always sent to the second pc where it is used to calculate the correct shadows cast by the point-lightsource represented by the ball. Shadows are calculated via custom vertex- and pixelshaders.

  • the place, korai, the bank building by day
  • photos of setup

Early Screenshots

the tracker system

the shadowing system

anonymous user login

Shoutbox

~5h ago

evvvvil: "Alexa's wet dream" our 4kb PC Intro ranked 5th at Revision. Music by Hoffman + Noby. Code/design by this prick. https://vimeo.com/331871498

~3d ago

joreg: reminder: this wednesday #vvvv meetup nr 8 in #berlin 8-berlin-vvvv-meetup

~4d ago

metrowave: Yes, thanks for the streamming.

~6d ago

Hadasi: ...classic

~6d ago

Hadasi: @welove the videos are still up there https://www.twitch.tv/wirmachenbunt/videos

~6d ago

welovemedia: Big thanks for the stream, will this stay online or be shared as a download for those who could not watch it live?

~6d ago

CeeYaa: Big THX for the daylong streaming - and amazing Project Insights https://www.twitch.tv/videos/412932722

~6d ago

u7angel: twitch livestream vvvv gamma

~7d ago

u7angel: @domj, sure

~7d ago

domj: @u7angel: nice! How about the talk later at 7?