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Comparing ray/doc/man/man1/rtcontrib.1 (file contents):
Revision 1.10 by greg, Fri Jun 10 20:53:55 2005 UTC vs.
Revision 1.13 by greg, Thu Oct 6 16:28:59 2005 UTC

# Line 16 | Line 16 | rtcontrib - compute contribution coefficients in a RAD
16   .B "\-o ospec"
17   ][
18   .B "\-b binv"
19 + ][
20 + .B "\-bn nbins"
21   ]
22   {
23   .B "\-m mod | \-M file"
# Line 85 | Line 87 | this will be applied to a "%d" format in the output fi
87   specification if present.
88   The actual bin number is computed at run time based on ray direction
89   and surface intersection, as described below.
90 + If the number of bins is known in advance, it should be specified with the
91 + .I \-bn
92 + option, and this is critical for output files containing multiple values
93 + per record.
94 + Since bin numbers start from 0, the bin count is always equal to
95 + the last bin plus 1.
96 + Set the this value to 0 if the bin count is unknown (the default).
97   The most recent
98 < .I \-b
98 > .I \-b,
99 > .I \-bn
100   and
101   .I \-o
102   options to the left of each
# Line 204 | Line 214 | pcomb -c 100 90 75 c_light1.pic -c 50 55 57 c_light2.p
214   .PP
215   To compute an array of illuminance contributions according to a Tregenza sky:
216   .IP "" .2i
217 < rtcontrib -b tbin -o sky.dat -m skyglow -b 0 -o ground.dat -m groundglow
217 > rtcontrib -I+ -b tbin -o sky.dat -m skyglow -b 0 -o ground.dat -m groundglow
218   @render.opt -f tregenza.cal scene.oct < test.dat
219   .SH ENVIRONMENT
220   RAYPATH         path to search for -f and -M files

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