Struct tiny_skia::Transform

pub struct Transform {
    pub sx: f32,
    pub kx: f32,
    pub ky: f32,
    pub sy: f32,
    pub tx: f32,
    pub ty: f32,
}

An affine transformation matrix.

Stores scale, skew and transform coordinates and a type of a transform.

Fields

sx: f32

kx: f32

ky: f32

sy: f32

tx: f32

ty: f32

Implementations

impl Transform

pub fn identity() -> Self

Creates an identity transform.

pub fn from_row(sx: f32, ky: f32, kx: f32, sy: f32, tx: f32, ty: f32) -> Self

Creates a new Transform.

We are using column-major-column-vector matrix notation, therefore it’s ky-kx, not kx-ky.

pub fn from_translate(tx: f32, ty: f32) -> Self

Creates a new translating Transform.

pub fn from_scale(sx: f32, sy: f32) -> Self

Creates a new scaling Transform.

pub fn from_skew(kx: f32, ky: f32) -> Self

Creates a new skewing Transform.

pub fn from_rotate(angle: f32) -> Self

Creates a new rotating Transform.

pub fn from_rotate_at(angle: f32, tx: f32, ty: f32) -> Self

Creates a new rotating Transform at the specified position.

pub fn is_identity(&self) -> bool

Checks that transform is identity.

The transform type is detected on creation, so this method is essentially free.

pub fn is_scale(&self) -> bool

Checks that transform is scale-only.

The transform type is detected on creation, so this method is essentially free.

pub fn is_skew(&self) -> bool

Checks that transform is skew-only.

The transform type is detected on creation, so this method is essentially free.

pub fn is_translate(&self) -> bool

Checks that transform is translate-only.

The transform type is detected on creation, so this method is essentially free.

pub fn is_scale_translate(&self) -> bool

Checks that transform contains only scale and translate.

The transform type is detected on creation, so this method is essentially free.

pub fn has_scale(&self) -> bool

Checks that transform contains a scale part.

The transform type is detected on creation, so this method is essentially free.

pub fn has_skew(&self) -> bool

Checks that transform contains a skew part.

The transform type is detected on creation, so this method is essentially free.

pub fn has_translate(&self) -> bool

Checks that transform contains a translate part.

The transform type is detected on creation, so this method is essentially free.

pub fn pre_scale(&self, sx: f32, sy: f32) -> Self

Pre-scales the current transform.

pub fn post_scale(&self, sx: f32, sy: f32) -> Self

Post-scales the current transform.

pub fn pre_translate(&self, tx: f32, ty: f32) -> Self

Pre-translates the current transform.

pub fn post_translate(&self, tx: f32, ty: f32) -> Self

Post-translates the current transform.

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

Pre-concats the current transform.

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

Post-concats the current transform.

pub fn map_points(&self, points: &mut [Point])

Transforms a slice of points using the current transform.

Trait Implementations

impl Clone for Transform

fn clone(&self) -> Transform

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Transform

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

Formats the value using the given formatter.

impl Default for Transform

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq<Transform> for Transform

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Copy for Transform

impl StructuralPartialEq for Transform