Struct HomographyMatrix 

pub struct HomographyMatrix {
    pub m: [[f64; 3]; 3],
}

A 3×3 homography (perspective transform) matrix stored in row-major order.

The matrix maps homogeneous source coordinates [x, y, 1] to destination coordinates:

[x', y', w'] = H * [x, y, 1]
dst = (x'/w', y'/w')

Fields

m: [[f64; 3]; 3]

Row-major 3×3 matrix coefficients.

Implementations

impl HomographyMatrix

pub fn new(m: [[f64; 3]; 3]) -> Self

Create a homography from a row-major 3×3 array.

pub fn identity() -> Self

Identity homography (no transform).

pub fn translation(tx: f64, ty: f64) -> Self

Create a 2D translation matrix.

pub fn scale(sx: f64, sy: f64) -> Self

Create a uniform scale matrix.

pub fn rotation(angle_rad: f64) -> Self

Create a counter-clockwise rotation matrix around the origin.

pub fn apply(&self, x: f64, y: f64) -> Option<(f64, f64)>

Apply the homography to a point (x, y).

Returns None if the projective w coordinate is near zero (degenerate).

pub fn inverse(&self) -> Option<Self>

Compute the inverse of this homography using Cramer’s rule.

Returns None if the matrix is singular.

pub fn compose(&self, other: &Self) -> Self

Multiply two homographies.

Trait Implementations

impl Clone for HomographyMatrix

fn clone(&self) -> HomographyMatrix

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HomographyMatrix

impl Debug for HomographyMatrix

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

Formats the value using the given formatter.

impl PartialEq for HomographyMatrix

fn eq(&self, other: &HomographyMatrix) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for HomographyMatrix