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Comparing ray/doc/ray.1 (file contents):
Revision 1.28 by greg, Tue Dec 1 16:58:16 2015 UTC vs.
Revision 1.30 by greg, Sun Jul 10 23:41:37 2016 UTC

# Line 1 | Line 1
1   .\" RCSid "$Id$"
2   .\" Print using the -ms macro package
3 < .DA 09/18/2015
3 > .DA 07/10/2016
4   .LP
5 < .tl """Copyright \(co 2015 Regents, University of California
5 > .tl """Copyright \(co 2016 Regents, University of California
6   .sp 2
7   .TL
8   The
# Line 622 | Line 622 | mod trans2 id
622   8 red green blue spec urough vrough trans tspec
623   .DE
624   .LP
625 + .UL Ashik2
626 + .PP
627 + Ashik2 is the anisotropic reflectance model by Ashikhmin & Shirley.
628 + The string arguments are the same as for plastic2, but the real
629 + arguments have additional flexibility to specify the specular color.
630 + Also, rather than roughness, specular power is used, which has no
631 + physical meaning other than larger numbers are equivalent to a smoother
632 + surface.
633 + .DS
634 + mod ashik2 id
635 + 4+ ux uy uz funcfile transform
636 + 0
637 + 8 dred dgrn dblu sred sgrn sblu u-power v-power
638 + .DE
639 + .LP
640   .UL Dielectric
641   .PP
642   A dielectric material is transparent, and it refracts light
# Line 1552 | Line 1567 | the Ecole Polytechnique Federale de Lausanne (EPFL Uni
1567   in Lausanne, Switzerland.
1568   .NH 1
1569   References
1570 + .LP
1571 + Ward, G., M. Kurt & N. Bonneel,
1572 + ``Reducing Anisotropic BSDF Measurement to Common Practice,''
1573 + .I Workshop on Material Appearance Modeling,
1574 + 2014.
1575   .LP
1576   McNeil, A., C.J. Jonsson, D. Appelfeld, G. Ward, E.S. Lee,
1577   ``A validation of a ray-tracing tool used to generate

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