[Radiance-general] rtcontrib problems

[Ji Zhang]

Dear list,

I'm following Axel's tutorial on rtcontrib:
http://www.jaloxa.eu/resources/radiance/documentation/docs/rtcontrib_lesson.pdf

Problem 1:
on page 16-17, I use the following script to generate the fisheye image for
Tregenza sky patches in random colors:

pcomb `for i in {000..145}; do \
echo "-c $(rcalc -e \
'$1=rand(recno);$2=rand(recno+.3);$3=rand(recno+.7)') \
./images/patches/p$i.hdr"; done` \
> ./images/sky_colorcomb.hdr

However, the script seems to run forever. Does it really need a long time
to create the image, or Have I miss anything here?


Problem 2:
on page 17, I changed the script as suggested by changing the "-f" option
to "-fo" to overwrite the existing hdr files:

vwrays -ff -x 600 -y 600 -vf ./views/back.vf \
|rtcontrib -ab 3 -ad 4096 -ar 256 -aa .1 -lw 0.0003 -n 2 \
-ffc `vwrays -d -x 600 -y 600 -vf ./views/back.vf` -fo tregenza.cal -b tbin
\
-o ./patches_copy/p%03d.hdr -m sky_glow -w \
./testroom_whitesky.oct

However, I got the following error message:
rtrace: fatal - command line error at 'tregenza.cal'
rtrace: fatal - command line error at 'tregenza.cal'

Can anybody help to advise what the options for rtcontrib I should use
here?


Thanks!
- Ji
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