At triangulation step we must check that active neighbors are bipolar

[galoko]

Hi!

I’ve been working with your SurfaceNets implementation and found it to be very insightful. While integrating it into my project, I noticed an opportunity to enhance the mesh generation process.

I propose a small enhancement to ensure that quads are formed only when edges meet a critical condition—where they truly represent a transition across the isosurface boundary (bipolar condition). This check will help prevent the formation of non-representative quads, thus increasing the accuracy of the mesh.

I believe this modification maintains the integrity of your original implementation while improving its applicability for precise surface representation.

Thank you for considering this enhancement.