material selection by the glossiness range

[mienda]

Hi,

I need for a movie to change the glossiness values of many materials in the scene, is there a way to select such materials with respect to their glossiness, for example I need to select all materials that have a value of glossiness lower than 0.8. is there any script to make it (FYI, there are many,many materials, it is impossible to solve this problem case by case ... it's a scene that I got that I have to optimize)

thank you in advance

mienda

[Rens]

As long as there are no maps driving the glossiness it's very simple. For VRayMtls for example:

a_mats = getclassinstances vraymtl
a_lowGloss = #()
for o_mat in a_mats where o_mat.reflection_glossiness < 0.8 do append a_lowGloss o_mat
print a_lowGloss

If there are maps driving it it gets very difficult as you would need to sample (render) the maps.

[mienda]

Thank you very much Rens,
i'll try it...

I was sure that it was simple but i don't know how to script !

Best

Mienda