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Comparing ray/doc/man/man1/vwrays.1 (file contents):
Revision 1.4 by greg, Mon Sep 19 04:26:08 2005 UTC vs.
Revision 1.7 by greg, Tue Aug 16 02:22:50 2011 UTC

# Line 90 | Line 90 | otherwise, which would produce a uniform clipping dist
90   .PP
91   If a picture is given on the command line rather than a set of view options,
92   then the view and image dimensions are taken from the picture file, and
93 < the reported ray origins and directions will exactly match the center of each
94 < pixel in the picture.
93 > the reported ray origins and directions will match the center of each
94 > pixel in the picture (plus optional jitter).
95   .PP
96   If a depth buffer file is given as well, then
97   .I vwrays
# Line 105 | Line 105 | for light rays leaving the scene surfaces to strike ea
105   To compute the ray intersection points and returned directions corresponding
106   to a picture and its depth buffer:
107   .IP "" .2i
108 < vwrays scene_v2.pic scene_v2.zbf > scene_v2.pts
108 > vwrays scene_v2.hdr scene_v2.zbf > scene_v2.pts
109   .PP
110   To determine what the dimensions of a given view would be:
111   .IP "" .2i
112 < vwrays -d -vf myview.vf -x 2048 -y 2048
112 > vwrays \-d \-vf myview.vf \-x 2048 \-y 2048
113   .PP
114   To generate a RADIANCE picture using
115   .I rtrace
116   instead of
117   .I rpict:
118   .IP "" .2i
119 < vwrays -ff -vf view1.vf -x 1024 -y 1024 |
120 < rtrace `vwrays -d -vf view1.vf -x 1024 -y 1024` -ffc scene.oct > view1.pic
119 > vwrays \-ff \-vf view1.vf \-x 1024 \-y 1024 |
120 > rtrace `vwrays \-d \-vf view1.vf \-x 1024 \-y 1024` \-ffc scene.oct > view1.hdr
121   .SH AUTHOR
122   Greg Ward Larson
123   .SH ACKNOWLEDGMENT

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