» 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

~4h ago

catweasel: @eglod, thats why many of us are working on timelines in VL...

~5h ago

eglod: Is there any possibility to copy and paste tracks in timelinerSA. I need it very much, is it very difficult to program this?

~18h ago

joreg: wanna make sure your projects will run with upcoming beta36? test them against the release candidate and report: beta36-release-candidate

~21h ago

colorsound: @vux thanks a lot for the update , my eternal gratitude.@ andresc4 @skyliner very happy you liked it. Big scale coming soon ;D

~23h ago

andresc4: I just gave my 2 cents tu Vux. BTW Laser things made by colorsound and dominikkoller are amazing!!!

~2d ago

dottore: thanks vux

~2d ago

~3d ago

Noir: big up vux

~3d ago

vux: New DirectX11 build, now on version 1.2 directx11-1.2-update

~4d ago

skyliner: @colorsound: voll laser wie du abgehst!