14 Feb
2006
14 Feb
'06
4:42 p.m.
Mathieu Bouchard a écrit :
Whatever the units are in the 3-D space, they cancel out with the flattening: meters/meter, cubits/cubit, inches/inch, all those are non-units. This is because a point in 3-D space (x,y,z) becomes (k*x/z,k*y/z). The constant "k" can be imagined to be in whichever units you want, but in GEM it tends to be some fraction of the window's size in pixels.
The constant k is ... well, 4 is the width (or height, I forget) of the Gem window.
aalex