Oil Can effect with A+D material?

[studio2s]

I'm looking to add a little spice to my renderings. I do a lot of tall glass buildings. I can very easily get nice mirror-smooth reflections. I'm thinking that I would like to try to make the reflections "oil can". By this, I mean that via construction tolerances or the fact that glass is always in a liquid state, the panes warp. Over a field of glazing, you would actually get distortions.

 

I would like to do this per pane without actually having to manipulate EACH pane. Can anyone come up with an approach to this? Maybe per pane is not actually needed.

 

Example

On the right side of this image is the effect I am attempting.

[AJLynn]

Noise bump map with a very large scale?

[studio2s]

On my ride home, I took a bit of time to really look at the effect in real life. A noise in the bump may work. Once I get further on the design I have just started, I will test it out and post about the results.

 

My initial thought was to add noise to the reflection, but that will only show a tonal difference in the the reflection, not distort it. I am guessing that a noise bump will work.

 

thanks for the thought.

[AJLynn]

Keep it really subtle - people often overdo this effect and it ends up looking like the building's glazed with thin acrylic and there's a gale force wind.

[daniohayon]

You can use the ocean(Lume) shader too. This shader has a better variation of bump and more settings to play with.

[studio2s]

Wow...good idea!

[Frosty]

Noise bump map with a very large scale?

 

This is how I do it in C4D. The exact shader is Noise>>Displaced Turbulance and at about 1000% scale.