I read:

I'm interesting in detecting colision of 3D object of pd +GEm i found some code in C++ but how to put in Gem ?

you could use Thomas Grill's flext[0] layer to write a collision detection external, I don't see any need to put it in gemdirectly since it will only deal with coordinates and doesn't care about visual representation.

regards,

x

[0] http://www.parasitaere-kapazitaeten.net/ext/flext/

chris@lo-res.org Postmodernism is german romanticism with better http://pilot.fm/ special effects. (Jeff Keuss / via ctheory.com)