I spent some time testing out the various "head tracking" demos written with OpenGL and none were complete. Many lacked wiimote support, and others simply didn't get the perspective transformation right. A few weekends ago I picked up a wiimote and wrote this program over the course of a few days. Many thanks to Johnny Lee for making the original version for Windows! His project was obviously my inspiration for this .

Note that although the code works fine on my machine, you'll need to compile it once you set up your screen and IR bar settings. I suggest familiarizing yourself with the code before you compile and run it. Make sure you have the cwiid library and MesaGL/GLUT.
I admit that it's quite unpolished at the moment, but I see a LOT of questions about how to do this in OpenGL so I wanted to release the code so others don't have to bang their head on walls anymore trying to understand this. I will be improving the documentation over the next few weeks, as well as writing a tutorial on how the perspective transform works, including pretty diagrams for all of those who can't learn without .

I posted my code here:
http://stsnyder.bol.ucla.edu/
Click on "Wiimote Projects"

It's written in C and uses the cwiid library for wiimote access.

It does not currently support textures or any other goodies like that. The targets are draw as two quads each. I drew a grid with lines for reference. I will clean up the appearance in the next few versions.

In the next version I will have a better interface for setting it up for your screen and IR light bar. I have have a bunch of other projects going on right now, so I'm sorry I can't work on this at the rapid pace I did when I just wanted to get it working.
Yes, the perspective correction works PROPERLY. I've seen a lot of demos that just move the camera around, without doing the proper transformation.

Thanks,
Steven Snyder

Just tried it, and it works for me, thanks. Will play with it more after I alter some glasses with IR LEDs...

/Rick

Hey Steven,

I've been cursing the need to get windows installed to try this demo for over a month now - finally found a spare machine, put windows on it, and was just thinking about trying to get the bluetooth stack working when I saw your post.

I installed the deps the guy above mentioned, typed "make" and ran it.  Held buttons 1&2 down, ran it again, and wow - it just worked!  I didn't have the IR bar to hand and had a quick go with my TV remote (which didn't do the trick) but then I noticed that my living room lights seem to emit some IR which let me demo that it works.

Good work - this is great - I'm going to have a play with the code later once I've sorted out a pair of special IR specs ;-)  If I do make any modifications I'll post them back to you.  (C isn't my strong point so it's quite possible I might not manage to do anything worthwhile!)

Dave

I had a newer version sitting on my computer that I forgot to upload. It's up now. I got rid of those horizontal grid lines on the front of the screen; those were just for testing purposes.. I didn't mean to leave them in the last release. Sorry about that! Looks clear now.

-Steven