Struct pax_runtime_api::Transform2D

pub struct Transform2D {
    pub previous: Option<Box<Transform2D>>,
    pub rotate: Option<f64>,
    pub translate: Option<[f64; 2]>,
    pub anchor: Option<[Size; 2]>,
    pub align: Option<[Size; 2]>,
    pub scale: Option<[f64; 2]>,
}

A sugary representation of an Affine transform+, including anchor and align as layout-computed properties.

translate represents an (x,y) affine translation scale represents an (x,y) non-uniform affine scale rotate represents a (z) affine rotation (intuitive 2D rotation) anchor represents the “(0,0)” point of the render node as it relates to its own bounding box. By default that’s the top-left of the element, but anchor allows that to be offset either by a pixel or percentage-of-element-size for each of (x,y) align the offset of this element’s anchor as it relates to the element’s parent. By default this is the top-left corner of the parent container, but can be set to be any value [0,1] for each of (x,y), representing the percentage (between 0.0 and 1.0) multiplied by the parent container size. For example, an align of (0.5, 0.5) will center an element’s anchor point both vertically and horizontally within the parent container. Combined with an anchor of (Size::Percent(50.0), Size::Percent(50.0)), an element will appear fully centered within its parent.

Fields

previous: Option<Box<Transform2D>>

rotate: Option<f64>

translate: Option<[f64; 2]>

over z axis

anchor: Option<[Size; 2]>

align: Option<[Size; 2]>

scale: Option<[f64; 2]>

Implementations

impl Transform2D

pub fn scale(x: f64, y: f64) -> Self

Scale coefficients (1.0 == 100%) over x-y plane

pub fn rotate(z: f64) -> Self

Rotation over z axis

pub fn translate(x: f64, y: f64) -> Self

Translation across x-y plane, pixels

pub fn align(x: Size, y: Size) -> Self

Describe alignment within parent bounding box, as a starting point before affine transformations are applied

pub fn anchor(x: Size, y: Size) -> Self

Describe alignment of the (0,0) position of this element as it relates to its own bounding box

pub fn default_wrapped() -> Rc<RefCell<dyn PropertyInstance<Self>>>

Trait Implementations

impl Clone for Transform2D

fn clone(&self) -> Transform2D

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for Transform2D

fn default() -> Transform2D

Returns the “default value” for a type.

impl Mul<Transform2D> for Transform2D

type Output = Transform2D

The resulting type after applying the * operator.

fn mul(self, rhs: Self) -> Self::Output

Performs the * operation.