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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 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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|
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set maxres=128 |
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set iltemp=/usr/tmp/il$$.pic |
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set tempfiles=($iltemp) |
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|
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alias readvar 'echo -n Enter \!:1 "[$\!:1]: ";set ans="$<";if("$ans" != "")set \!:1="$ans"' |
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|
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onintr quit |
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|
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cat <<_EOF_ |
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DAYLIGHT FACTOR CALCULATION |
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|
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This script calculates daylight factors and/or illuminance levels on a |
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rectangular workplane and produces a contour plot from the result. The |
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input is a Radiance scene description (and octree) and the output is one |
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or more color Radiance pictures. |
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|
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_EOF_ |
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readvar octree |
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if ( "$octree" == "$nofile" || ! -f "$octree" ) then |
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echo "You must first create an octree with oconv" |
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echo "before running this script." |
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exit 1 |
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endif |
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echo "In what scene file is the gensky command located?" |
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readvar genskyf |
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if ( "$genskyf" == "$nofile" || ! -r "$genskyf" ) then |
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echo "You will not be able to compute" |
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echo "daylight factors without a gensky file" |
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else |
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set extamb=`xform -e $genskyf|sed -n 's/^# Ground ambient level: //p'` |
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endif |
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echo -n "Is the z-axis your zenith direction? " |
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if ( "$<" !~ [yY]* ) then |
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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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echo "Starting rtrace calculation -- this will take some time..." |
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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 -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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set maxval=`getinfo < $iltemp | rcalc -i 'EXPOSURE=${e}' -e '$1=3/e'` |
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if ( "$ilpict" != "$nofile" ) then |
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echo "Making illuminance contour picture $ilpict..." |
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falsecolor -s "$maxval*470" -m 470 -l Lux -cb -pi $iltemp > $ilpict |
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endif |
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if ( "$dfpict" != "$nofile" ) then |
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echo "Making daylight factor contour picture $dfpict..." |
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falsecolor -s "$maxval/$extamb" -m "1/$extamb" -l DF \ |
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-cb -pi $iltemp > $dfpict |
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endif |
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echo "Done." |
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quit: |
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rm -f $tempfiles |
