vizcave and quad-buffered stereo

[AySz88]

Hi! I'm working with Michaelrepucci's code.

I'm curious what is the correct way of giving cave.setTracker() a tracker that is tracking a location on the head that isn't right between the eyes? In our case, the tracker is producing both position and orientation data from a sensor near the top of the head on a helmet. If I understand correctly, I need to produce another tracker that transforms that sensor's position to the location between the eyes, and then give that tracker to cave.setTracker().

Right now, it uses the filter plug-in (filter.position()) to do this. But my understanding is that this will cause the position data to be translated by some constant vector in world space, instead of a vector that rotates with the helmet.

How do I apply the translation correctly?

[edit] I should mention that, for our application, just using the sensor location doesn't quite give us good enough results.