Forest Pack > Forest Pro (*)

Possible to affect distribution with vertex map? and Vray dirt or mr AO?

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MN4869:
I'd love to be able to control placement of objects as per the title. Especially with a vertex map. It gave me strange results when I tried - I'm new to itoo though.

Can then use a script to paint vertices in concave and/or convex edges.

Vray dirt placement or another AO method would be cool too.

iToo:
Vertex map is a very special type of texture, it cannot be used as distribution map. VRayDirt and AO don't work either because are generated at render time, but Forest items are scattered just before rendering (when the map doesn't exist yet).

But i think you would bake VRayDirt/AO map in a standard texture, and then use it in Forest. Haven't tried it, though.

MN4869:
Ok I figured that might be the case - cool plugin though so far - and it's great that you're active on the forum too. Thanks

Asplan Viak:

--- Quote from: iToo on June 15, 2013, 09:41:02 AM ---Vertex map is a very special type of texture, it cannot be used as distribution map. VRayDirt and AO don't work either because are generated at render time, but Forest items are scattered just before rendering (when the map doesn't exist yet).

But i think you would bake VRayDirt/AO map in a standard texture, and then use it in Forest. Haven't tried it, though.

--- End quote ---

I'm pretty sure vrayscatter and multiscatter support using vertex colours as distribution  maps, and for many other parameters too. I used to use them all the time in landscapes before I switched to Forestpack. VRayDirt though I understand, as you explained, cant be used, but your reason for vertex colours is rather lacking. Why can't FP do this when the inferior multiscatter can?

iToo:
You are right: as i said, Vertex Color are handled by Max in a very particular way. But there is a workaround for that (copied from Multiscatter reference):


--- Quote ---Vertex Paint (Important note! Use texture channels - for example the 2nd - for keeping colour parameters since the MultiScatter Vertex Color channel is not applicable due to certain peculiarities of scatter creating algorithms.)
--- End quote ---

Setting Vertex Paint->Map Channel does the trick. Just be sure to use the same map channel in Distribution Map->Map Channel, and enable Surface->Auto if you want to paint interactively.

Anyway, if the idea is to use VC for painting, i suggest using Forest Painting areas instead.

Thanks for your contribution.

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