Calculating Dirt map with the help of a placeholder object?

thomes · April 21, 2023, 1:52pm

Hi,
Is it possible to calculate a black/white AO map with the help of a placeholder object to use this map for material blending.
This is a cool map in vray…
Thanks for help!
Thomes

Charles_Weaver · April 22, 2023, 10:45am

What do you mean? Can you please provide screenshots and additional details? This is difficult to answer out of context.

oo_1942 · April 22, 2023, 11:08am

It can be extracted in three ways and can be used as a node combination.

thomes · April 22, 2023, 2:05pm

Sorry, it’s called distance texture map…not dirt map. Somehow I think an equal calculation.

So you use a proxy object to calculate outer/inner distance of the objects cutting with a radius…

Thanks Kim for your help !

RSEhlers · April 23, 2023, 10:31am

I believe you will find that if you look at Blender Dynamic Paint /Brush and also Wet maps…

and a detailed use of wet-map for specific purpose.

canerasln · April 23, 2023, 2:21pm

geometry proximity node

thomes · April 23, 2023, 2:39pm

Thanks to all for feedback …! caner, that looks great. I give it a try next days.
Thanks for working this out!
Thomas

thomes · May 8, 2023, 3:31pm

hi caner, tried to get it done, but somethings wrong…

can you see it and help me? thanks!