I'm working on a slicer tool and want to make sure I'm clear about how planes
are defined within the transform manager as I want to adjust the slab and depth
planes in real time based on user input. Here's my understanding.
1) Planes are defined by point4f's where the x, y, z coordinates define a
vector from the origin that is perpendicular to the plane.
2) I assume the plane includes the point at the end of the vector.
3) I'm most confused about the meaning of w (the fourth coordinate) for planes
that are not parallel to the screen surface, but fixed in the molecule
coordinate system.
Can anybody clarify?
Thanks,
Jonathan
Dr. Jonathan H. Gutow
Chemistry Department [email protected]
UW-Oshkosh Office: 920-424-1326
800 Algoma Boulevard FAX:920-424-2042
Oshkosh, WI 54901
http://www.uwosh.edu/facstaff/gutow
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