Struct SceneViewState 

pub struct SceneViewState {
    pub pan_x: f32,
    pub pan_y: f32,
    pub zoom: f32,
    pub rotation: f32,
}

Snapshot of a SceneView’s view transform: pan offset, zoom factor, and rotation in radians. Use SceneView::state to capture the current values; SceneView::restore_state to apply a saved snapshot.

Fields

pan_x: f32

X pan offset (the same value driven by the SceneView’s pan_x signal).

pan_y: f32

Y pan offset.

zoom: f32

Zoom factor (1.0 = identity).

rotation: f32

Rotation in radians (0.0 = no rotation).

Implementations

impl SceneViewState

pub const IDENTITY: SceneViewState

The identity view state: no pan, zoom 1.0, no rotation.

pub fn new(pan: Vec2, zoom: f32, rotation: f32) -> Self

Construct a new state with the given pan / zoom / rotation.

pub fn pan(&self) -> Vec2

Pan offset as a [Vec2].

pub fn is_identity(&self) -> bool

Whether this state is the identity (no pan, zoom 1.0, no rotation). Useful for skipping persistence of fresh-default SceneViews.

Trait Implementations

impl Clone for SceneViewState

fn clone(&self) -> SceneViewState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SceneViewState

impl Debug for SceneViewState

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

Formats the value using the given formatter.

impl Default for SceneViewState

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for SceneViewState

fn eq(&self, other: &SceneViewState) -> 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 StructuralPartialEq for SceneViewState