Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: herncabret on 2018-01-12, 17:05:18

Title: Clay texture with finger prints
Post by: herncabret on 2018-01-12, 17:05:18

I'm trying to make a hand made clay material to make renders that give an impression of an old stop motion animation type model. Think Wallace and Gromit.

It has to have impurities in it to show human error like finger prints and scratches.. and at the same time look like a soft clay material.

The image is a reference from google of what somebody has achieved with Z Brush.

I thought a good starting point may be a rubber from the Corona Library?

Any tips?

Thanks

Title: Re: Clay texture with finger prints
Post by: davemahi on 2018-01-12, 19:33:13

You will defiantly need a finger print texture to use in the  reflection Gloss. Something like this one >>

https://i.pinimg.com/736x/68/20/d9/6820d9c8ef7ac0f6ceda8f6d7a3a95bd--fingerprints-the-arts.jpg (https://i.pinimg.com/736x/68/20/d9/6820d9c8ef7ac0f6ceda8f6d7a3a95bd--fingerprints-the-arts.jpg)

Title: Re: Clay texture with finger prints
Post by: mferster on 2018-01-12, 22:34:05

Here is what I came up with...

Looking at the Grommit reference photos, I think your clay looks far too wet and shiny.
In the material I came with I used: a glossiness value of around 0.3, Used both a bump and displacement, and some noise in the diffuse mixed with the colour to provide some subtle colour variation.

For the bump map... I 50% mixed two versions of the fingerprint map that davemahi provided, one with a strong blur and an unmodified version.

I then used a heavily blurred grungy looking map, with a 4mm spread in displacement.

Title: Re: Clay texture with finger prints
Post by: herncabret on 2018-01-13, 18:15:45

That looks great Mferster very close to what I'm looking for!
If I were to want slightly larger and deeper impressions like accidental finger impressions (a rubbish level of craftsmanship) would you just add another map to the displacement or would it have to come down to geometry?

Title: Re: Clay texture with finger prints
Post by: mferster on 2018-01-15, 17:18:18

I would just increase the intensity of the bump map or displacement map, or maybe add a slight noise modifier to the model

Title: Re: Clay texture with finger prints
Post by: Rimas on 2018-01-15, 17:44:09

I'll be cheeky and plug the Corona tri-planar map. Been making all sorts of great "no UVs required" materials for recent jobs with it. Though I reckon won't be good for animation.

Title: Re: Clay texture with finger prints
Post by: herncabret on 2018-01-16, 10:46:47

Sounds great i'll give all of this a try later today.
Haven't given triplanar a go yet..should be interesting.