Struct HexGridHomography 

pub struct HexGridHomography {
    pub h_img_from_rect: Homography,
    pub h_rect_from_img: Homography,
    pub min_q: i32,
    pub min_r: i32,
    pub max_q: i32,
    pub max_r: i32,
    pub px_per_cell: f32,
    pub rect_width: usize,
    pub rect_height: usize,
}

A global homography mapping between rectified hex grid space and image space.

Rectified coordinates map axial (q, r) to 2D using:

x = px_per_cell * (q + r * 0.5)
y = px_per_cell * (r * sqrt(3) / 2)

Fields

h_img_from_rect: Homography

Maps rectified coordinates to image coordinates.

h_rect_from_img: Homography

Maps image coordinates to rectified coordinates.

min_q: i32

Axial bounding box (with margin).

min_r: i32

max_q: i32

max_r: i32

px_per_cell: f32

Rectified pixels per grid cell edge.

rect_width: usize

Rectified image dimensions.

rect_height: usize

Implementations

impl HexGridHomography

pub fn from_corners( corners: &HashMap<GridIndex, Point2<f32>>, px_per_cell: f32, margin_cells: f32, ) -> Result<Self, HexRectifyError>

Compute a global homography from hex grid corners to a rectified coordinate system.

• corners: map from axial grid index (q=i, r=j) to image position.
• px_per_cell: rectified pixels per grid cell edge.
• margin_cells: extra margin around the grid bounding box (in cell units).

pub fn rect_to_img(&self, p_rect: Point2<f32>) -> Point2<f32>

Map a point from rectified space to image space.

pub fn img_to_rect(&self, p_img: Point2<f32>) -> Point2<f32>

Map a point from image space to rectified space.

pub fn axial_to_rect(&self, q: f64, r: f64) -> Point2<f64>

Convert axial coordinates (q, r) to rectified pixel coordinates.

This does not apply the homography — it maps grid indices to the rectified coordinate system directly.

Trait Implementations

impl Clone for HexGridHomography

fn clone(&self) -> HexGridHomography

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HexGridHomography

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.