Grasshopper

algorithmic modeling for Rhino

Tangible User Interface for Grasshopper


I just knocked this thing together combining Giulio, Luis and Damien's gHowl tools with reacTIVision to control grasshopper with camera tracked fiducial markers, and thought others might be interested in trying it out.
I've been wanting to do something like this for a long time, and I'm really excited about all the possibilities!
It's easy to have a go yourself - just follow this 6-step plan:

  1. Install Processing if you don't already have it.
  2. Get the gHowl interoperability components
  3. Install the reacTIVision vision engine
  4. Download the Processing TUIO client TUIO_Processing.zip, unzip the contents and place them all in a folder you create named TUIO within the libraries folder of your Processing installation ( e.g. C:\Program Files\processing-1.1\libraries\TUIO )
  5. Print the first page of fiducials.pdf - the default marker set.*
  6. Open/run reactivision.exe, ARGH.pde , ARGH.3dm and ARGH.ghx (contained in ARGH.rar)
    Markers 0, 1 and 2 should then control the positions of 3 meshes in Rhino. (you can also easily add as many items as you like)

This is just starting steps really, but I think there is huge potential here - all sorts of ways real world models could be connected to the virtual. I'd like to try combining this with my Kangaroo physics engine at some point.

Going via Processing is probably just a temporary measure - it sounds like it might soon become possible for gHowl to listen directly to reacTIVision.

To properly augment reality it might be nice to actually try and overlay the Rhino viewport on the live video.
Anyone got any ideas on how hard this would be ?

*(If you are unable or too lazy to print them you can also send these images to your phone/pda and use it as your marker)

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Comment by Borja Gancedo on July 1, 2010 at 5:22pm
I found it very interesting, If you dont mind I would like to try and play with your description but have problems to download "ARGH.rar what can I do?. thank you..
Comment by Ángel Linares on July 1, 2010 at 4:18pm
Reactable + GH ----> GREAT!!!! Amazing work :) Really fast response.

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