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ALL_SF(nged)		     BRL-CAD User Commands		  ALL_SF(nged)

NAME
       all_sf -	obtain shape factors between named regions of an entire	mged
       database

SYNOPSIS
       all_sf model.g objects...

DESCRIPTIONS
       all_sf is an interactive	program	used to	create a file containing shape
       factors between all regions of the named	objects. The shape factor from
       region i	to region j is the fraction of total energy radiated from
       region i	that is	intercepted by region j. This program finds the
       shapefactors for	all regions in an mged model not just shapefactors
       between engine regions.

       All_sf uses a Monte Carlo simulation, so	increasing the number of
       significant digits in the answer	by one requires	about a	100-fold
       increase	in the number of rays fired.

       Three different files are created by all_sf: an output file, a longwave
       radiation exchange file,	and an error file. The output file lists the
       shapefactors between each region. The longwave radiation	exchange file
       is for use with PRISM. This file	is not quite PRISM ready so the	user
       must fill in the	missing	parameters if it is to be used with PRISM. The
       error file is basically used for	checking errors	in the program and
       probably	will not be used by the	average	user.

EXAMPLE
       The following is	an example from	an interactive session.

		$ all_sf con.sph.g all.air
		Enter name of output file (25 char max).
		     cs.out
		Enter name of longwave radiation exchange file (25 char	max).
		     cs.lwx
		Enter the name of the error file (25 char max).
		     cs.err
		Database Title:	 concentric spheres for	use with
		Number of regions:  3
		Min & max for entire model.
		     X:	 -2300.000000 -	2300.000000
		     Y:	 -2300.000000 -	2300.000000
		     Z:	 -2300.000000 -	2300.000000
		Center:	 0.000000, 0.000000, 0.000000

		Radius:	 3984.216857
		Surface	Area:  199478365.653926

		Enter the number of rays to be fired.
		     50000000
		Region names in	structure.
		Do you wish to enter your own seed (0) or use the default of 1 (1)?
		     1
		Seed initialized
		$

SEE ALSO
       firpass(1), secpass(1), showtherm(1), ir-X(1), ir-sgi(1), pictx(1),
       pictsgi(1), shapefact(1), User's	Manual for IRPREP (BRL-SP-96),
       Computer	Programs for Generating	an Input File for PRISM	and Displaying
       PRISM Results (BRL report in progress)

AUTHOR
       Susan A.	Coates

BRL-CAD				  07/08/2017			  ALL_SF(nged)

NAME | SYNOPSIS | DESCRIPTIONS | EXAMPLE | SEE ALSO | AUTHOR

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