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Comparing ray/doc/man/man1/ranimate.1 (file contents):
Revision 1.3 by greg, Tue Jan 18 03:59:40 2005 UTC vs.
Revision 1.5 by greg, Mon Feb 7 17:08:16 2005 UTC

# Line 279 | Line 279 | above.)\0
279   .TP
280   .BR RSH
281   The command to use instead of
282 < .I rsh(1)
282 > .I ssh(1)
283   to execute commands remotely on another machine.
284   The arguments and behavior of this program must be identical to the UNIX
285 < .I rsh
285 > .I ssh
286   command, except that the
287   .I -l
288   option will always be used to specify an alternate user name rather than the
# Line 294 | Line 294 | option may or may not appear, but the
294   .I -n
295   option will always be used, and the expected starting directory will
296   be that of the remote user, just as with
297 < .I rsh.
297 > .I ssh.
298   .TP
299   .BR NEXTANIM
300   This variable specifies the next
# Line 374 | Line 374 | and
374   .I pinterp
375   used otherwise.
376   (The default value for number of samples is 5.)\0
377 + To simulate a particular camera's aperture, divide the focal length of
378 + the lens by the f-number, then convert to the corresponding
379 + world coordinate units.
380 + For example, if you wish to simulate a 50mm lens at f/2.0 in
381 + a scene modeled in meters, then you divide 50mm by 2.0 to get 25mm,
382 + which corresponds to an effective aperture of 0.025 meters.
383   The default aperture is 0, meaning no depth-of-field blurring.
384   This option does not currently work with the
385   .I ANIMATE
# Line 575 | Line 581 | to set whatever variables are important in the remote
581   This requirement may be circumvented by substituting the
582   .I on(1)
583   command for
584 < .I rsh(1)
584 > .I ssh(1)
585   using the
586   .I RSH
587   control variable, or by writing a custom remote execution script.
# Line 600 | Line 606 | Since most modern machines use IEEE floating point, th
606   usually a problem, but it is something to keep in mind.
607   .SH "SEE ALSO"
608   pfilt(1), pinterp(1), pmblur(1), rad(1),
609 < ranimove(1), rpict(1), rsh(1), rtrace(1)
609 > ranimove(1), rpict(1), ssh(1), rtrace(1)

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