[Radiance-general] Adding the sun to image based lighting environment

[Lars O. Grobe]

Hi!
>
> lum_sun source sun
> -rx 90 -rz 8 -ry 0
>
> 0
>
> 4 0.6410 0.5537 -0.5315 0.5323
>
Does this pass oconv without error messages? I think you just need to
remove everything in the second line except the zero here, so it becomes

lum_sun source sun
0
0
4 0.6410 0.5537 -0.5315 0.5323

Cheers, Lars.