Metal floor material in V-Ray

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17 Mar, 2012 Usco
17 Mar, 2012 # Re: Metal floor material in V-Ray
Hello. When texturing a floor in a subway car, I have a problem creating a realistic metallic coating. http://renderstuff.com/page-723/page-last/#2967 In prvom reference not seen "vague" to highlight "textured "floor. And that's what I go out: 1 with texture; 2 without texture; 3 from a different angle, without texture. Probably just not enough material. probably need to use a Blend material - one for the highlight and the second to reflect the texture, or something like that. Need help in creating the correct understanding of glare and reflections.


20 Mar, 2012 Anton (Staff Author)
20 Mar, 2012 # Re: Metal floor material in V-Ray

Hello!

If you look closely at the reference, you will see that the floor is not a solid surface, but a covering made of long metal slats. Ideally, the geometry of your gender in the scene must be identical. That is, not a plane with a bump, namely the geometry of this refraction on the floor.

In addition to greater realism and just fiz. Correctness of glare on a geometrically regular surface, this approach will allow you to more flexibly adjust the properties of floor materials.
In particular, the protrusions, the upper parts of these slats, are polished, after all, they walk / "kick" with their feet😁 At the same time, the grooves are matte, since, firstly, their feet are not polished, and secondly, there simply Accumulates dirt. As a result, they are darker and shiny. This, without a doubt, plays a huge role, in what the sex looks like.

Now about the bump. Look at the raff, you can immediately see that the floor is not flat, crumpled. These dents make geometry very expensive. But a bump map, such dents, would be very appropriate. And the dents themselves should be both small and huge. In general, as in the photo.

Now we came to the floor itself.
We objectively raise that on the floor in the subway car, there can only be metal, as light and very durable material. However, in practice, it was not visible directly on the floor, because it was simply painted with paint and covered with a wear-resistant varnish. It is them that we see. That is a layer of matte or semi-matt paint and a layer of glossy varnish, on top.

Mat paint.
Everything is simple. On Diffuse - the texture of the paint. On the blue floor - blue, gray - gray.
Reflections are strong, but they are fuzzy.

Mate lacquer.
The same, you can generally use a paint mat, just reflections make it even stronger and reduce the blur.

Of course, and on that and on that mat, described above bump.

Mat floor.
As I said, the floor mat is composite. That is a layer of paint and a layer of varnish.
Composite mats in V-Ray are made using the VRayBlendMtl material.

In the Base material slot - you put in the paint mat.
In any of Coat materials, for example in Coat material 1 - you put a varnish mat.

That's all. The floor material is ready.

Purely theoretically, the lacquer mat should be transparent, but in practice, this is superfluous, since, in fact, the main "chip" of the composite mat is not in mixing the diffusion, but in blending the glare when a glossy highlight is applied over the matte glare. So, with the transparency of the varnish, you can not bother😉



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