looking for references for 3D navigation paradigms

[marshall]

Does anyone have references to paradigms for navigating through "complex"
3 dimensional spaces?  As a reference point, I think a "simple" 3
dimensional space would be an inflated balloon, and a "complex" space
would be the human body.  A problem I'm trying to understand better is
how, while navigating, do you know where you are?  An example of this is
some of the exhibits at Disney Land.

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