[Radiance-general] 答复: 答复: Render tregenza sky patches by rcontrib and pcomb

[Wang Clarence]

I  am using the 5.1.0.

According to my code that I mentioned before, the "combine.hdr" was rendered, but it could not be well opened and displayed like other patch images with ".hdr".

Actually, I have been also trying the method of "rfluxmtx" , then it returned " cannot load '-o'" when I run bash.

#vwrays -ff -x 600 -y 600 -vf views_up.vf  | rfluxmtx @rtc.opt -v  -ffc ' vwrays -d -x 600 -y 600 -vf views_up.vf ' -o sky_tre_p%d.hdr - test_sky.rad -i a.oct

I will appreciate your helping.

Best,

Clarence




________________________________
发件人: Greg Ward <gregoryjward at gmail.com>
发送时间: 2017年10月12日 4:19
收件人: Radiance general discussion
主题: Re: [Radiance-general] 答复: Render tregenza sky patches by rcontrib and pcomb

Hi Clarence,

This should be correct.  What version of Radiance do you have?  (I.e., what does "rpict -version" return?)

Does it report any error at all?  Is the output file completely empty?

It works when I run it using 5.1, and I'm pretty sure it will work for anything later than the 4.1 release, which was in 2011.

Cheers,
-Greg


From: Wang Clarence <wangjuncwz at hotmail.com<mailto:wangjuncwz at hotmail.com>>

Date: October 11, 2017 8:15:46 PM PDT


Thanks for the advice.

I have tried, but the "result.hdr" was not a format of picture, which meant that the rendering was failed.

#gensky 3 21 10 +s -a 22 -o 114 | genskyvec -m 1 -c 1 1 1 > tmp_skydist.dat

#vwrays -ff $vw |rcontrib @rtc1.opt -ffc $(vwrays -d $vw) -V+ -f tregenza.cal -b tbin -bn Ntbins -o first_tre_p%d.hdr -m skyglow test_sky_sun.oct

#dctimestep first_tre_p%d.hdr tmp_skydist.dat > combine.hdr

Or, any parameters should be needed in the third line?

Best,

Clarence
________________________________
发件人: Greg Ward <gregoryjward at gmail.com<mailto:gregoryjward at gmail.com>>
发送时间: 2017年10月11日 18:09
收件人: Radiance general discussion
主题: Re: [Radiance-general] Render tregenza sky patches by rcontrib and pcomb

Hi Clarence,

Rather than trying to fix Axel's old script, it's better to use the simpler and more efficient dctimestep method:

dctimestep first_tre_p%d.hdr skydist.dat > result.hdr

You can also simplify the rcontrib step using the rfluxmtx program, but what you have is fine.

Cheers,
-Greg


From: Wang Clarence <wangjuncwz at hotmail.com<mailto:wangjuncwz at hotmail.com>>

Date: October 11, 2017 6:27:45 AM PDT


Dear all,

I've been trying to render the Tregenza sky patches by using rcontrib. Each patch was rendered successfully, but when I use "pcomb" which contains "tregsamp.bash" by Axel Jacobs to combine them, the "combined.hdr" was a black picture.

#vwrays -ff $vw |rcontrib @rtc1.opt -ffc $(vwrays -d $vw) -V+ -f tregenza.cal -b tbin -bn Ntbins -o first_tre_p%d.hdr -m skyglow test_sky_sun.oct

#pcomb -h $(bash apply_tregsamp_1.bash) > combine_1.hdr

#the original bash script below by Axel Jacobs was changed in order to be consistent with my code.


# Path to the patch images

imgpath="image_fisheye/patches_tre/first_tre"

for i in $imgpath_*.hdr; do
        # Scan patch number from file name
          patch=$(ls $i \
                          |rcalc -i "$imgpath_p\${pnum}.hdr" \
                           -e "\$1=pnum")
        # Get multiplier from dat file, based on record number
          multi=$(cat tmp_skydist.dat \
                          |rcalc -e "diff=$patch-recno+1;absdiff=if(diff,diff,-1*diff);

   \$1=if(absdiff,0,\$1);" |total)
          echo " -s $multi $i"

done



#EOF

Thanks,

Clarence
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