Struct Scale 

pub struct Scale { /* private fields */ }

The two viewport scales, computed once per frame.

Implementations

impl Scale

pub fn new(viewport: [f32; 2], design: [f32; 2]) -> Result<Self, ScaleError>

Scales for viewport (design units on screen) and design (the box the game was drawn in).

pub const fn unit() -> Self

The design box scaled to the design box itself: a neutral fallback for a viewport that has not been measured yet.

pub fn fit_or_unit(viewport: [f32; 2], design: [f32; 2]) -> Self

new for a frame loop: a viewport that is not measured yet (the first frames, a minimized window) reads as unit instead of failing the frame.

pub const fn fit(&self) -> f32

Everything fits: no cropping.

pub const fn cover(&self) -> f32

Everything is covered: no letterboxing.

pub fn fit_units(&self, units: f32) -> f32

Scale a design-unit measurement for the fit scale.

pub fn cover_units(&self, units: f32) -> f32

Scale a design-unit measurement for the cover scale.

Trait Implementations

impl Clone for Scale

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 Scale

impl Debug for Scale

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

Formats the value using the given formatter.

impl Default for Scale

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Scale

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Scale