I’m working on a workflow to use rcontrib for modeling direct reflection and I think there is a bug in rcontrib when dr is set higher than 0.
To describe the issue I made a simple model for a room with four test point in the center. There is a surface in front of the room facing towards the room which has a has mirror material with %100 reflection to create a secondary source. I’m using the solar positions as modifiers.
Now when I run rcontrib with -dr set to 1 the results for points 2-4 are reasonable but it returns unexpected results for the first point. Interestingly enough if I copy the same point twice the results for the second point looks fine.
Here are the commands:
rcontrib -y 4 -dr 1 -as 128 -st 0.85 -lw 0.05 -M sky\analemma.mod -dc 1.0 -ar 16 -ss 0.0 -I -dp 64 -ab 0 -dt 0.0 -ds 0.5 -aa 0.25 -lr 4 -ad 50000 -dj 0.0 reflection.oct < reflection.pts > result\total..reflection.dc
rmtxop -c 47.4 119.9 11.6 -fa result\total..reflection.dc > result\total..reflection.ill
and here is the results:
#?RADIANCE
rmtxop -c 47.4 119.9 11.6 -fa result\total..reflection.dc
NROWS=4
NCOLS=24
NCOMP=1
FORMAT=ascii
1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005 1.170006000000000e+005
0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 9.161318724000001e-003 9.416367509000000e-003 9.511395611000000e-003 9.444757150000000e-003 9.217575618000001e-003 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000
0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000
0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 9.161318724000001e-003 9.416367509000000e-003 9.511395611000000e-003 9.444757150000000e-003 9.217575618000001e-003 8.833733145000000e-003 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000 0.000000000000000e+000
Here is the folder with all the input files. I’m using Radiance version 5.0.a.12 on Windows.