rtcontrib issue (stuck on p.16 of understanding rtcontrib tutorial)

noted, thanks

-Kyle

···

On Sat, Jun 30, 2012 at 4:51 PM, Greg Ward <[email protected]> wrote:

Hi Kyle,

Patch 0 is indeed the ground plane. If you didn't specify a ground in your scene description (i.e., no source with negative-Z) then this will be black. Photosphere doesn't know what to do when you give it a black HDR image.

-Greg

From: kyle konis <[email protected]>
Date: June 30, 2012 4:37:07 PM PDT

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

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