Any interest in PyVista interoperability?

[banesullivan]

Neat library! Really impressed with the speedups!

Wanted to try this out/experiment, but don't feel comfortable doing so with the commercial use restrictions. Maybe for some side open source experiments if I get a chance though!

I've been working a lot to improve boolean and other CSG operations in PyVista lately because VTK's equivalent boolean operators are effectively useless. So I made a bridge between pyvista and Manifold in https://github.com/pyvista/pyvista-manifold (and I'd love to see how Manifold and trueform compare)

I'd love to see a pyvista-trueform accessor/bridge as well to expose these algorithms/filters to the PyVista ecosystem! Any interest in creating an accessor for this? We have docs on the accessor API registration here: https://docs.pyvista.org/extras/extending_pyvista

[ZigaSajovic]

@banesullivan For licensing: trueform is free for personal and academic research use.

PyVista integration

We are interested in integration with PyVista. The Python API is numpy in, numpy out. There is a Mesh class that caches derived structures (topology, AABB tree, half-edges, etc.), but every cached structure is a numpy array; nothing opaque to round-trip across. The vtkPolyData ↔ numpy ↔ trueform idiom stays small as a result. Working VTK examples in the repo:

• boolean_difference.py
• intersection_curves.py
• isocontours.py
• isobands.py
• cross_section.py
• alignment.py (ICP)
• collision.py
• remeshing.py

I will look into it and reply to this discussion. Please stick around for when an issue is opened.

Manifold Comparison

Benchmarks against manifold would be a great addition to our project.

Quick boolean comparison:

	Manifold	trueform
Inputs	watertight, edge-manifold triangle meshes	non-manifold flaps, T-junctions, coplanar faces, inconsistent winding
Faces	triangles only	convex polygons natively
Kernel	Shewchuk floating-point expansions	bounded three-width integer kernel, no fallback
Classification	half-edge traversal on a watertight invariant	weighted-majority votes over topological units (components, relations, domains)
Output	manifold triangle mesh	preserves the topological intent of the input, including non-manifold structure if present

Beyond booleans, trueform exposes:

• N-mesh arrangements
• Polygon-soup arrangements
• Self-intersection resolution
• Intersection curves
• Domain extraction
• Cross-sections, isocontours, isobands
• Spatial queries (distance, ray-cast, nearest-neighbour), ICP, remeshing