[Bf-committers] Curvature Input

[Mathias Panzenböck]

Normals do not work because the effect is view vector independent and it
distinguishes between "hill tops" and "valleys". But using a effect dependant on
a x/y/z offset will obviously not work, because the surface is round. Its a
bronze statue where there is corrosion in grooves and where there is shiny
bronze otherwise.

	-panzi

joe schrieb:
> The link doesn't work (well it asks to sign up).  Anyway, the normals do
> represent the curvature of the mesh, though it's not perfect in some
> cases.   As does the tangent, I think.
> 
> Joe
> 
> On Tue, Dec 23, 2008 at 5:58 PM, Mathias Panzenböck
> <grosser.meister.morti at gmx.net <mailto:grosser.meister.morti at gmx.net>>
> wrote:
> 
>     Hi.
> 
>     I'd like to make a material which color depends to the curvature of
>     the surface
>     of the mesh. I figured this would be much like the stress input
>     option for
>     texture coordinates. So my question is, at which files I'd have to
>     look to add
>     such an option? The idea would be to make a material like used in
>     this model:
>     http://toratsuji.deviantart.com/art/Huntress-103603352
> 
>     This material seems not to depend on the normals but on the curvature.
>     I don't know if the texture of this model is procedural or painted
>     by hand, but
>     I would suspect the former.
> 
>     Maybe one can achieve the same effect with the present options, if
>     so how would
>     I do that? But I don't think it would be easily possible.
> 
>            -panzi
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