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root/radiance/ray/src/common/bsdf.h
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Comparing ray/src/common/bsdf.h (file contents):
Revision 2.7 by greg, Sat Feb 19 23:42:09 2011 UTC vs.
Revision 2.8 by greg, Mon Feb 21 22:50:37 2011 UTC

# Line 9 | Line 9
9   *      in the surface plane pointed to the right as seen from the front.
10   *      This means the Y-axis is "up" and the Z-axis is the surface normal.
11   *
12 + *  Note that we reverse the identification of "front" and "back" from
13 + *      the conventions used in WINDOW 6.  "Front" in our library points
14 + *      in the +Z direction, towards the interior of the space rather
15 + *      than the exterior.
16 + *
17   *  BSDF vectors always oriented away from surface, even when "incident."
18   *
19   *  Created by Greg Ward on 1/10/11.

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