Struct ViewportTransform 

pub struct ViewportTransform {
    pub translation: [f32; 2],
    pub scale: f32,
}

A uniform 2D camera transform used by interactive viewports.

Screen coordinates are calculated as world * scale + translation.

Fields

translation: [f32; 2]

Translation from world origin to screen origin in logical points.

scale: f32

Uniform scale. Invalid values normalize to 1.0 before use.

Implementations

impl ViewportTransform

pub const IDENTITY: ViewportTransform

pub fn new( translation_x: f32, translation_y: f32, scale: f32, ) -> ViewportTransform

pub fn normalized(self) -> ViewportTransform

pub fn world_to_screen(self, world: [f32; 2]) -> [f32; 2]

pub fn screen_to_world(self, screen: [f32; 2]) -> [f32; 2]

pub fn with_scale_around( self, screen_focal_point: [f32; 2], scale: f32, ) -> ViewportTransform

Changes scale while keeping the world point below screen_focal_point fixed on screen.

Trait Implementations

impl Clone for ViewportTransform

fn clone(&self) -> ViewportTransform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ViewportTransform

impl Debug for ViewportTransform

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

Formats the value using the given formatter.

impl Default for ViewportTransform

fn default() -> ViewportTransform

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ViewportTransform

fn deserialize<__D>( __deserializer: __D, ) -> Result<ViewportTransform, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for ViewportTransform

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ViewportTransform

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ViewportTransform

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ViewportTransform