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Comparing ray/doc/man/man1/rtrace.1 (file contents):
Revision 1.13 by greg, Tue Jun 14 03:34:14 2005 UTC vs.
Revision 1.17 by greg, Wed Mar 11 02:27:26 2009 UTC

# Line 87 | Line 87 | d      direction (normalized)
87   .IP
88   v       value (radiance)
89   .IP
90 + V       contribution (radiance)
91 + .IP
92   w       weight
93   .IP
94   W       color coefficient
# Line 610 | Line 612 | system call will share memory on a copy-on-write basis
612   .SH EXAMPLES
613   To compute radiance values for the rays listed in samples.inp:
614   .IP "" .2i
615 < rtrace -ov scene.oct < samples.inp > radiance.out
615 > rtrace \-ov scene.oct < samples.inp > radiance.out
616   .PP
617   To compute illuminance values at locations selected with the 't'
618   command of
619   .I ximage(1):
620   .IP "" .2i
621 < ximage scene.pic | rtrace -h -x 1 -i scene.oct | rcalc -e '$1=47.4*$1+120*$2+11.6*$3'
621 > ximage scene.hdr | rtrace \-h \-x 1 \-i scene.oct | rcalc \-e '$1=47.4*$1+120*$2+11.6*$3'
622   .PP
623   To record the object identifier corresponding to each pixel in an image:
624   .IP "" .2i
625 < vwrays -fd scene.pic | rtrace -fda `vwrays -d scene.pic` -os scene.oct
625 > vwrays \-fd scene.hdr | rtrace \-fda `vwrays \-d scene.hdr` \-os scene.oct
626   .PP
627   To compute an image with an unusual view mapping:
628   .IP "" .2i
629 < cnt 640 480 | rcalc -e 'xr:640;yr:480' -f unusual_view.cal | rtrace
630 < -x 640 -y 480 -fac scene.oct > unusual.pic
629 > cnt 480 640 | rcalc \-e 'xr:640;yr:480' \-f unusual_view.cal | rtrace
630 > \-x 640 \-y 480 \-fac scene.oct > unusual.hdr
631   .SH ENVIRONMENT
632   RAYPATH         the directories to check for auxiliary files.
633   .SH FILES

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