» Lightstrive
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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

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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

svdk: I plan to release all the patches involves as soon as they're cleaned. Greeting from Strasbourg

~5h ago

svdk: hi!saw you had a lot of fun @node 17.Disappointed I couldn't make it!. Some video I made using vvvv 4some parts. https://goo.gl/1UM8Bp

~12h ago

okvrdz: @joreg Thanks!

~17h ago

sunep: happy Birthday @tonfilm

~20h ago

microdee: @synth: care to make an issue on github with console output?

~1d ago

synth: @microdee cant install DX11 with it, cant choose not to install it either. Cant install anything without disregarding dependensies

~1d ago

joreg: @okvrdz i recommend starting here: topics it should give you a good overview of what's all there

~1d ago

microdee: vpm is updated and DO update as it fixes an issue with new latest DX11 script https://github.com/vvvvpm/vpm/releases/latest

~1d ago

okvrdz: to those experienced v4 users... What in your opinion is the best/easiest way to learn nodes and what they do/usage/capabilities?

~2d ago

bildwerk: @jzzxh its on the todo list :)