"Bald Eagle" <cre### [at] netscapenet> wrote:

> That would be nice - though unsure if we could handle _everything_ that way.
> But keep talking - I'm listening.  :)
>
>

"everything", wrt mesh depending on the object, either Parametric or Marching
"Cubes" / Dual Contouring. Prism, SOR, Lathe, all mesh extrusion/rotation of
some kind (is kind of parametric). The odd one out may be the sphere sweep
depending on the kind of result one wants.

Text I've never looked in to, maybe lofting a mesh, kind of parametric. ('t
would be nice to have the path of a glyph available in SDL for
interpolation/spline)

Lofting may be a mesh thing that has no equivalent in the "solid" world.

Subdivision modelling. Iirc John VanSickle wrote a macro for it. I don't
remember a POV-Ray patch that was able to do it, may have missed it.

An other thing that comes with mesh is displacement mapping (combined with
subdivision or parametric) as is currently possible through the macro route an
using an image as a function.

For CSG there are mesh libraries.

"everything" wrt backend. When there would be a meshify option for objects, 3D
printing etc. would be easier. It would require testing for closed mesh' and
probably a few more things.

I've been dabbling with Half Edge Mesh data structures in Nim. Once you have one
it is relative easy to convert it to any mesh format. They are also useful for
operations on mesh.

Almost all of this is available in libraries, https://www.cgal.org/ for example.

ingo

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