i need some help with radial anisotropic reflections

[bas_klompmaker]

hi everybody!

im trying to setup radial anisotropic reflections in my scene for the vinyl and some metal surfaces, but im stuck. the methods displayed in tutorials dont aply, and i tried the 3dsmax technique, but also without results,,

i got no clue, so i would be verrry happy if someone would share how its done

cheers!

[fixeighted]

I am guessing that you don't have an appropriate bump map for the vinyl, so either a b/w gradient, tiled a load of times and radial, or an image of similar, should sort out the problem.

[bas_klompmaker]

Thank you for your reply Fixeighted!

i tried using bumps or normals for vinyl but it doesnt realy look good, lots of aliasing problems in the groove area;s, this also needs huge textures becouse grooves are so small. usualy i vary glossiness, this fakes the look of grooves in the surface.

I went back to 3dsmax to recreate the shader and found out that my first mistake was to set anistrophy to 1.0, it needs a value between .1 an .9 or so..

i also added a scalar to the output of the gradient. and crank it up to 20.. i dont realy know how this conversion works,, i still see a seam in the surface of the vinyl.

also had to set the gradient type to spiral instead of sweep..

theres no real visual feedback from materials in blender mat-editor. so its a lot of try and error.

now there's still the problem that the second gradient map: gradient.001 doesnt show at all, even if i pipe it into diffuse it doesnt show up,, while i connected this map the same way as the anastropic rotation gradient map...

[fixeighted]

I had another look at this and decided that the bump method worked better for the vinyl and doesn't therefore need any anisotropy.
Here's the Max setup if it's of use.