Norman Vine writes:

 > it would behoove the project to stop thinking in spherical terms 
 > xcept when doing user input / output.  Converting back and forth 
 > between sperical and cartesian representation is a time sink that 
 > doesn't need to happen at all as far as the inner workings of the 
 > program are concerned. The cartesian form of the position and 
 > orientation is already put on the 'bus' in cartesian form USE IT

We don't have that information for other things (control tower,
aircraft carrier, wind sock, terminal building, etc.), and this is
where the FGLocus class would be an advantage -- it can cache the
conversion and redo it only when one of the parameters has changed.


All the best,


David

-- 
David Megginson
[EMAIL PROTECTED]


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