Module hex 

Hexagonal grid support for pointy-top axial coordinates.

This module provides hex-grid counterparts of the square-grid types in the parent crate: 6-connected graph construction, BFS traversal, smoothness analysis, D6 alignment transforms, and rectification.

Coordinate Convention

Axial coordinates (q, r) are stored in GridIndex where i = q and j = r. Pointy-top orientation: q increases eastward, r increases south-eastward.

Re-exports

pub use alignment::GRID_TRANSFORMS_D6;

pub use direction::HexDirection;

pub use direction::HexNodeNeighbor;

pub use graph::HexGridGraph;

pub use graph::HexNeighborValidator;

pub use mesh::AffineTransform2D;

pub use mesh::HexGridHomographyMesh;

pub use mesh::HexMeshError;

pub use rectify::HexGridHomography;

pub use rectify::HexRectifyError;

pub use smoothness::hex_find_inconsistent_corners;

pub use smoothness::hex_predict_grid_position;

pub use traverse::hex_assign_grid_coordinates;

pub use traverse::hex_connected_components;

pub use validators::SpatialHexValidator;

Modules

alignment

Dihedral group D6 transforms for hexagonal grids in axial coordinates.

direction

Hex grid directions and neighbor metadata for pointy-top axial coordinates.

graph

6-connected hex grid graph construction via KD-tree spatial search.

mesh

Per-triangle homography mesh for hex grid rectification.

rectify

Single global homography from hex grid corners.

smoothness

Hex grid smoothness analysis: predict corner positions from neighbors.

traverse

Connected components and BFS coordinate assignment for hex grid graphs.

validators

Ready-to-use HexNeighborValidator implementations for hex grids.