Struct bevy_ui::DefaultUiCamera

pub struct DefaultUiCamera<'w, 's> { /* private fields */ }

Implementations

impl<'w, 's> DefaultUiCamera<'w, 's>

pub fn get(&self) -> Option<Entity>

Trait Implementations

impl SystemParam for DefaultUiCamera<'_, '_>

type State = FetchState

Used to store data which persists across invocations of a system.

type Item<'w, 's> = DefaultUiCamera<'w, 's>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World, system_meta: &mut SystemMeta) -> Self::State

Registers any World access used by this SystemParam and creates a new instance of this param’s State.

fn new_archetype( state: &mut Self::State, archetype: &Archetype, system_meta: &mut SystemMeta )

For the specified Archetype, registers the components accessed by this SystemParam (if applicable).

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this SystemParam’s state. This is used to apply Commands during apply_deferred.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick ) -> Self::Item<'w, 's>

Creates a parameter to be passed into a SystemParamFunction.

impl<'w, 's> ReadOnlySystemParam for DefaultUiCamera<'w, 's>

where Query<'w, 's, (Entity, &'static Camera)>: ReadOnlySystemParam, Query<'w, 's, Entity, (With<Camera>, With<IsDefaultUiCamera>)>: ReadOnlySystemParam, Query<'w, 's, Entity, With<PrimaryWindow>>: ReadOnlySystemParam,