Struct TransformValues 

pub struct TransformValues {
    pub scale_x: f32,
    pub scale_y: f32,
    pub rotation: f32,
}

The numbers a paint-time transform is made of that can sensibly be interpolated: a scale on each axis and a turn.

The pivot is not here, and that is the decision worth stating: it is a choice of origin, not a quantity. Interpolating it would move a shape across the screen while every number describing the shape stayed still, which is a thing no caller ever asks for and a thing nobody would be able to debug. A widget that wants the pivot to change has changed what it is doing, not how much of it.

Fields

scale_x: f32

Horizontal scale; 1.0 is neutral.

scale_y: f32

Vertical scale; 1.0 is neutral.

rotation: f32

Clockwise turn, in radians.

Trait Implementations

impl Clone for TransformValues

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TransformValues

impl Debug for TransformValues

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

Formats the value using the given formatter.

impl Default for TransformValues

fn default() -> Self

The identity — not zeroes. A scale of nought is a shape with no area, so a transform mounting at Default would flash the subtree out of existence.

impl PartialEq for TransformValues

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TransformValues