I kind of want a "Perl Standard Polygon Mesh Object"

I'd not call it a "standard", because I doubt anyone but me has used it, but <shameless plug>I wrote CAD::Mesh3D for helping me write STL files.</shameless plug> (It's based on Math::Vector::Real instead of PDL. Sorry, etj.)

like surface normals per polygon

That's the assumption mine made (because that's what STL wants).

Though mine only has triangular facets, and a helper function to define a rectangle to turn it into a triangle. No higher-node polygons have helpers.

or texture coordinates, texture references etc

Definitely not included in mine.

input/output formats:

Since my focus when writing it was STL, CAD::Mesh3D comes with a formatter to read or write STL. But I tried to make it extensible, so CAD::Mesh3D::ProvideNewFormat should allow you to define another file format, if desired.

conclusion:

Based on your description, CAD::Mesh3D isn't likely what you need or want, but this seemed a good place for a <shameless plug>...</shameless plug>, just in case you or anyone else wanted to play with it.

In reply to Re^6: Creating X BitMap (XBM) images with directional gradients by pryrt
in thread Creating X BitMap (XBM) images with directional gradients by kcott

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