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root/radiance/ray/src/px/pdfblur.csh
Revision: 2.3
Committed: Sat Sep 16 08:36:41 1995 UTC (29 years, 2 months ago) by greg
Content type: application/x-csh
Branch: MAIN
Changes since 2.2: +5 -7 lines
Log Message:
changed to work as standard input to pinterp or rpict

File Contents

# User Rev Content
1 greg 2.1 #!/bin/csh -f
2     # SCCSid "$SunId$ LBL"
3     #
4     # Do depth-of-field blurring on picture
5     #
6 greg 2.3 if ($#argv != 4) then
7     echo "Usage: $0 aperture distance nsamp viewfile" >/dev/tty
8 greg 2.1 exit 1
9     endif
10     set a = "$1"
11     set d = "$2"
12     set n = "$3"
13 greg 2.3 set vf = "$4"
14 greg 2.1 set piopt = ($argv[6-]:q)
15 greg 2.3 cnt $n | rcalc -e `vwright i < $vf` \
16 greg 2.2 -e "M:$n/5+1;a:$a/2;d:$d;N:$n;" -e 'tmax:PI*a*(M+1)' \
17 greg 2.1 -e 't=tmax/N*($1+rand($1))' \
18     -e 'theta=2*M*PI/(M-1)*(M-sqrt(M*M-(M-1)/(PI*a)*t))' \
19     -e 'r=a*(1-(M-1)/(2*M*M*PI)*theta)' \
20     -e 'rcost=r*cos(theta);rsint=r*sin(theta)' \
21     -e 'opx=ipx+rcost*ihx+rsint*ivx' \
22     -e 'opy=ipy+rcost*ihy+rsint*ivy' \
23     -e 'opz=ipz+rcost*ihz+rsint*ivz' \
24     -e 'os=is-rcost/(d*ihn);ol=il-rsint/(d*ivn)' \
25 greg 2.3 -o 'VIEW= -vp ${opx} ${opy} ${opz} -vs ${os} -vl ${ol}'