Struct Camera 

pub struct Camera {
    pub x: f32,
    pub y: f32,
    pub zoom: f32,
}

Where the author was standing when a row was written: the world point at the centre of their view, and how far in they were zoomed.

Centre-and-zoom rather than a rect, so the view reproduces sensibly at any window size — and recorded rather than derived, because the view the author set is evidence of what they were working on where a region computed from the change is only a guess. The conversion to and from the canvas’s own Vantage lives above both crates, in the app’s camera module.

Fields

x: f32

y: f32

zoom: f32

Implementations

impl Camera

pub const UNSEEN: Self

A session nobody was looking through: a headless test, a seeded container, a command-line write. Recorded rather than left absent, so a row’s shape never depends on whether there was a window.

Trait Implementations

impl Clone for Camera

fn clone(&self) -> Camera

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Camera

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Camera

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Camera

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Camera

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Camera

impl StructuralPartialEq for Camera