Trait re_viewer_context::ViewState

pub trait ViewState: Any + Sync + Send {
    // Required methods
    fn as_any(&self) -> &dyn Any;
    fn as_any_mut(&mut self) -> &mut dyn Any;
}

Unserialized frame to frame state of a view.

For any state that should be persisted, use the Blueprint! This state is used for transient state, such as animation or uncommitted ui state like dragging a camera. (on mouse release, the camera would be committed to the blueprint).

Required Methods

fn as_any(&self) -> &dyn Any

Converts itself to a reference of std::any::Any, which enables downcasting to concrete types.

fn as_any_mut(&mut self) -> &mut dyn Any

Converts itself to a reference of std::any::Any, which enables downcasting to concrete types.

Trait Implementations

impl ViewStateExt for dyn ViewState

fn downcast_ref<T: ViewState>(&self) -> Result<&T, ViewSystemExecutionError>

Downcasts this state to a reference of a concrete type.

fn downcast_mut<T: ViewState>( &mut self, ) -> Result<&mut T, ViewSystemExecutionError>

Downcasts this state to a mutable reference of a concrete type.

Implementations on Foreign Types

impl ViewState for ()

Implementation of an empty view state.

fn as_any(&self) -> &dyn Any

fn as_any_mut(&mut self) -> &mut dyn Any

Implementors