Struct Transform2D 

pub struct Transform2D { /* private fields */ }

A 2D affine transformation matrix.

Internally uses a 3x3 matrix for affine transforms. The last row is always [0, 0, 1].

Implementations

impl Transform2D

pub const IDENTITY: Self

Identity transform (no transformation).

pub fn from_mat3(matrix: Mat3) -> Self

Create from a 3x3 matrix.

pub fn translate(offset: Vec2) -> Self

Create a translation transform.

pub fn rotate(angle: f32) -> Self

Create a rotation transform (angle in radians).

pub fn scale(factor: f32) -> Self

Create a uniform scale transform.

pub fn scale_xy(scale: Vec2) -> Self

Create a non-uniform scale transform.

pub fn skew(skew_x: f32, skew_y: f32) -> Self

Create a skew transform.

skew_x is the horizontal skew angle in radians. skew_y is the vertical skew angle in radians.

pub fn then(&self, other: &Transform2D) -> Self

Combine two transforms (self then other).

pub fn then_translate(&self, offset: Vec2) -> Self

Add a translation after this transform.

pub fn then_rotate(&self, angle: f32) -> Self

Add a rotation after this transform.

pub fn then_scale(&self, factor: f32) -> Self

Add a scale after this transform.

pub fn then_scale_xy(&self, scale: Vec2) -> Self

Add a non-uniform scale after this transform.

pub fn transform_point(&self, point: Vec2) -> Vec2

Transform a point.

pub fn transform_vector(&self, vector: Vec2) -> Vec2

Transform a vector (ignores translation).

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

Get the inverse transform, if it exists.

pub fn as_mat3(&self) -> &Mat3

Get the underlying 3x3 matrix.

pub fn translation(&self) -> Vec2

Get the translation component.

pub fn scale_factor(&self) -> Vec2

Get the scale component (approximate for non-uniform transforms).

pub fn rotation(&self) -> f32

Get the rotation angle in radians (approximate for skewed transforms).

Trait Implementations

impl Clone for Transform2D

fn clone(&self) -> Transform2D

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Transform2D

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

Formats the value using the given formatter.

impl Default for Transform2D

fn default() -> Self

Returns the “default value” for a type.

impl Mul<Vec2> for Transform2D

type Output = Vec2

The resulting type after applying the * operator.

fn mul(self, rhs: Vec2) -> Vec2

Performs the * operation.

impl Mul for Transform2D

type Output = Transform2D

The resulting type after applying the * operator.

fn mul(self, rhs: Transform2D) -> Transform2D

Performs the * operation.

impl PartialEq for Transform2D

fn eq(&self, other: &Transform2D) -> 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 Copy for Transform2D

impl StructuralPartialEq for Transform2D