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greg | 
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#!/bin/csh -f | 
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# SCCSid "$SunId$ LBL" | 
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# | 
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# Interactive script to calculate daylight factors | 
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# | 
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set nofile="none" | 
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set genskyf=$nofile | 
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set octree=$nofile | 
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set dfpict=$nofile | 
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set ilpict=$nofile | 
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set fcopts=($*) | 
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set wporig=(0 0 0) | 
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set wpsize=(1 1) | 
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set rtargs=(-ab 1 -ad 256 -as 128 -aa .15 -av .1 .1 .1) | 
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set maxres=128 | 
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greg | 
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 | 
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alias readvar 'echo -n Enter \!:1 "[$\!:1]: ";set ans="$<";if("$ans" != "")set \!:1="$ans"' | 
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cat <<_EOF_ | 
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                        DAYLIGHT FACTOR CALCULATION | 
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This script calculates daylight factors and/or illuminance levels on a | 
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rectangular workplane and produces a contour plot from the result.  The | 
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input is a Radiance scene description (and octree) and the output is one | 
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or more color Radiance pictures. | 
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_EOF_ | 
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readvar octree | 
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if ( "$octree" == "$nofile" || ! -f "$octree" ) then | 
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greg | 
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        echo "You must first create an octree with" | 
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        echo "oconv before running this script." | 
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        exit 1 | 
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endif | 
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greg | 
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set title="$octree:r" | 
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greg | 
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echo "In what scene file is the gensky command located?" | 
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readvar genskyf | 
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greg | 
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if ( "$genskyf" == "$nofile" || ! -r "$genskyf" ) then | 
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        echo "You will not be able to compute daylight" | 
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        echo "factors since there is no gensky file." | 
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else | 
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        set title=$title\ `sed -n 's/^.*\<gensky  *\([0-9][0-9]*  *[0-9][0-9]*  *[0-9][0-9.]*\).*$/\1/p' $genskyf` | 
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greg | 
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        set extamb=`xform -e $genskyf|sed -n 's/^# Ground ambient level: //p'` | 
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endif | 
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greg | 
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echo -n "Is the z-axis your zenith direction? " | 
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if ( "$<" !~ [yY]* ) then | 
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greg | 
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        echo "I'm sorry, you cannot use this script" | 
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        exit 1 | 
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endif | 
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echo "What is the origin (smallest x y z coordinates) of the workplane?" | 
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readvar wporig | 
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set wporig=($wporig) | 
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echo "What is the x and y size (width and length) of the workplane?" | 
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readvar wpsize | 
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set wpsize=($wpsize) | 
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set wpres=(`rcalc -n -e '$1=if(l,'"floor($maxres*$wpsize[1]/$wpsize[2]),$maxres);"'$2=if(l,'"$maxres,floor($maxres*$wpsize[2]/$wpsize[1]));l=$wpsize[2]-$wpsize[1]"`) | 
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set rtargs=($rtargs -ar `getinfo -d<$octree|rcalc -e '$1=floor(16*$4/'"($wpsize[1]+$wpsize[2]))"`) | 
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echo "What calculation options do you want to give to rtrace?" | 
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echo "(It is very important to set the -a* options correctly.)" | 
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readvar rtargs | 
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echo "Illuminance contour picture if you want one" | 
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readvar ilpict | 
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if ( $?extamb ) then | 
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        echo "Daylight factor contour picture if you want one" | 
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        readvar dfpict | 
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endif | 
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if ( "$ilpict" == "$nofile" && "$dfpict" == "$nofile" ) then | 
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        echo "Since you don't want any output, I guess we're done." | 
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        exit 0 | 
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endif | 
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greg | 
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echo "Title for output picture" | 
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readvar title | 
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set sctemp=/usr/tmp/sc$$.csh | 
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cat <<'_EOF_' > $sctemp | 
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set iltemp=/usr/tmp/il$$.pic | 
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set tltemp=/usr/tmp/tl$$.pic | 
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set tempfiles=($iltemp $sctemp $tltemp) | 
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echo "Your dayfact job is finished." | 
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echo "Please check for error messages below." | 
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echo "" | 
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set echo | 
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cnt $wpres[2] $wpres[1] \ | 
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        | rcalc -e '$1=($2+.5)/'"$wpres[1]*$wpsize[1]+$wporig[1]" \ | 
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                -e '$2=(1-($1+.5)/'"$wpres[2])*$wpsize[2]+$wporig[2]" \ | 
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                -e '$3='"$wporig[3]" -e '$4=0;$5=0;$6=1' \ | 
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        | rtrace $rtargs -h+ -I+ -ov -faf $octree \ | 
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        | pvalue -r -x $wpres[1] -y $wpres[2] -df \ | 
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        | pfilt -h 20 -n 0 -x 350 -y 350 -p 1 -r 1 > $iltemp | 
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greg | 
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set maxval=`getinfo < $iltemp | rcalc -i 'EXPOSURE=${e}' -e '$1=3/e'` | 
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greg | 
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psign -h 50 " $title " | pfilt -1 -x /2 -y /2 > $tltemp | 
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greg | 
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'_EOF_' | 
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greg | 
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if ( "$ilpict" != "$nofile" ) then | 
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greg | 
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        echo 'falsecolor -cb -l Lux $fcopts \\ | 
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greg | 
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                -s "$maxval*470" -m 470 -ip $iltemp \\ | 
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greg | 
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                | pcompos -a 1 - $tltemp > $ilpict' >> $sctemp | 
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greg | 
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endif | 
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if ( "$dfpict" != "$nofile" ) then | 
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greg | 
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        echo 'falsecolor -cb -l DF $fcopts \\ | 
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                -s "100/PI*$maxval/$extamb" -m "100/PI/$extamb" -ip $iltemp \\ | 
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greg | 
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                | pcompos -a 1 - $tltemp > $dfpict' >> $sctemp | 
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greg | 
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endif | 
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greg | 
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echo 'rm -f $tempfiles' >> $sctemp | 
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(source $sctemp) |& mail `whoami` & | 
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echo "Your job is started in the background." | 
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greg | 
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echo "You will be notified by mail when it is done." |