how to find out where a user is pointing

plux

Hi all, I have an idea for a project but, as I've never used the kinect before I want to know if it can be done with it. What I want to do is to find out where a user is pointing to (in 3d space). Then ok, I want to detect the skeleton of his arm (and I saw this can be done) and then virtually 'extend' it (drawing a line for example) to check where is pointing in the space. Basically I will have a wall and I want to find out where (which area) the user arm is pointing on that wall (and the user won't be touching the wall, of course). If you know any interesting source I'd really appreciate it.

sorry for my english.

thanks :)

plux

update: I see that I need P3d or OPENGL render in the size() to draw a 3d line. But if I do this, _I'll get this error (from simple openNi)

SimpleOpenNI Error: createDepth: can't set videoMode!

is there any other way to do what I'm trying to?

thanks

Chrisir

version of processing?

plux

2.0.1

I can't find really nice documentation around (I saw openNi has disappeared and just found a simple openNi google group)

I found also another interesting library http://www.magicandlove.com/blog/research/kinect-for-processing-library/

plux

solved with some maths..I don't actually needs the line to be drawn..