Position-based Weathering in CineRender

[derekjackson]

Hi,
I'm wondering if there's a way to achieve weathering effects based on proximity to an edge of a polygon. From what I can tell, the Weathering shader effect just smears a texture over the whole surface - I'm wanting something that takes account of position on the surface (for example, to do darker edges on asphalt roads as they near the kerb)

Is there a way of achieving this? Either through the Weathering effect or some other shader type?

Thanks.

[Erwin Edel]

https://helpcenter.graphisoft.com/guides/archicad-21/archicad-21-reference-guide/user-interface-refe...

This?

[derekjackson]

Thanks - I'll explore that for concave edges. It may not work for convex edges though...

[Lingwisyer]

Ambient occlusion is more about light penetration into corners... so it won't give you that much flexibility in creating a weathered effect to the edges of your materials. I have yet to find something like VrayDirt on the Cinerender Engine which can do what you're wanting...


Ling.

[Erwin Edel]

There are two instances of AO: applied to the whole scene as an effect or applied as a procedural shader in surface channels.

This means you can use it as a layer to affect a texture, weathering effect etc, from what I understand from the help article I linked (scroll down all the way to the bottom).

Concave / rounded edges won't work most likely, as they are just a lot of small straight segments in the end.