POV-Ray : Newsgroups : povray.general : Anyone read this? : Re: Anyone read this? Server Time
9 Aug 2024 15:23:42 EDT (-0400)
  Re: Anyone read this?  
From: Vahur Krouverk
Date: 11 Aug 2000 09:54:20
Message: <399405B6.4FCC39E8@aetec.ee>
Margus Ramst wrote:
> 
> > I don't think so, it's part of the material definition that a material can
> > displace geometry
> 
> The same applies for  MegaPOV, in a way. And it has the advantage that a
> mathematical pattern can be used to displacement-map a mathematical object
> (isosurface).
> I still say displacement-mapping a mesh is a modeller feature, since it simply
> transforms the mesh vertices (at least I presume Max does it that way).
> 
I don't think, that displacement mapping could be considered as
modeller's issue. Yes, it transforms vertices, but nobody will create
such dense mesh and transform all those vertices in any modeller to get
displacement. Displacement requires quite dense mesh (Matt Pharr's paper
gives following numbers: without displacement model contained ~1200
triangles, with displacement 1,120,000 triangles, so ~1000 times more)
to get smooth shading for surface and it is not practical to model and
store this mesh. Displacement was created in first place for simulating
such features of surface, which are too tedious to model.


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