Struct ProjectiveTransform 

pub struct ProjectiveTransform { /* private fields */ }

A projective mapping of a two-dimensional coordinate plane.

Implementations

impl ProjectiveTransform

pub const fn identity() -> ProjectiveTransform

Leaves positions unchanged.

pub fn translation(tx: f32, ty: f32) -> ProjectiveTransform

Translates positions by the supplied logical-pixel offsets.

pub fn uniform_scale(scale: f32) -> ProjectiveTransform

Uniform scale about the origin (device-scale root transform: render graphs stay in logical dp; density applies at execution).

pub fn from_rect_to_quad(rect: Rect, quad: [[f32; 2]; 4]) -> ProjectiveTransform

Maps a rectangle to corners ordered top-left, top-right, bottom-left, bottom-right.

pub fn from_homogeneous(matrix: [[f32; 3]; 3]) -> ProjectiveTransform

The transform a homogeneous matrix describes, scaled so its last entry is one wherever that entry is not zero: its other entries then read as the scale, turn, translation and perspective they are.

pub fn then(self, next: ProjectiveTransform) -> ProjectiveTransform

Returns the composed transform that applies self first and next second.

pub fn inverse(self) -> Option<ProjectiveTransform>

Maps destination coordinates back to the source, unless the matrix is singular.

pub fn matrix(self) -> [[f32; 3]; 3]

Returns the row-major homogeneous matrix.

pub fn map_point(self, point: Point) -> Point

Maps a position into destination coordinates.

pub fn map_rect(self, rect: Rect) -> [[f32; 2]; 4]

Maps a rectangle’s top-left, top-right, bottom-left and bottom-right corners.

pub fn bounds_for_rect(self, rect: Rect) -> Rect

Returns the axis-aligned bounds of the transformed rectangle.

Trait Implementations

impl Clone for ProjectiveTransform

fn clone(&self) -> ProjectiveTransform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProjectiveTransform

impl Debug for ProjectiveTransform

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

Formats the value using the given formatter.

impl Default for ProjectiveTransform

fn default() -> ProjectiveTransform

Returns the “default value” for a type.

impl PartialEq for ProjectiveTransform

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ProjectiveTransform