[Radiance-general] rtcontrib issue (stuck on p.16 of understanding rtcontrib tutorial)

[kyle konis]

I have added the -bn option and now have a good batch of sky subdivisions.

vwrays -ff $vw | rtcontrib -bn 146 @rtc.opt -ffc \
$(vwrays -d $vw) -V+ -f tregenza.cal -b tbin  \
-o images/patches/p%03d.hdr \
-m sky_glow testroom_whitesky.oct

and a nice visualization with Andy's previous response to Ji:

cnt 146 | rcalc -e '$1=rand(recno);$2=rand(recno+.3);$3=rand(recno+.7)' | \
dctimestep ./images/patches/p%03d.hdr > ./images/sky_colorcomb.hdr


...

I am still a bit confused regarding patch p000.hdr

When i attempt to open in Photosphere, i get :  "Cannot map HDR pixels
in MapSubimage"

Since the sky only needs 145 patches, the purpose of this p000.hdr is
a mystery.  (Although i recall reading something about is purpose late
last night . . .  a placeholder for the ground reflection if it is
added  . . . ?)


-Kyle