Struct Camera2dRoot

pub struct Camera2dRoot {
    pub scale: f32,
    pub offset: f32,
}

A UiRoot implementation based on Camera2d. The available space is the physical viewport size, scaled as necessary.

Fields

scale: f32

Value used to divide the physical viewport size. I.e., scale: 2. will make UI nodes twice as big.

offset: f32

Z-layer offset for UI nodes.

Trait Implementations

impl Clone for Camera2dRoot

fn clone(&self) -> Camera2dRoot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for Camera2dRoot

where Self: Send + Sync + 'static,

Required Components: Camera2d.

A component’s Required Components are inserted whenever it is inserted. Note that this will also insert the required components of the required components, recursively, in depth-first order.

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table

A constant indicating the storage type used for this component.

fn register_required_components( requiree: ComponentId, components: &mut Components, storages: &mut Storages, required_components: &mut RequiredComponents, inheritance_depth: u16, )

Registers required components.

fn register_component_hooks(hooks: &mut ComponentHooks)

Called when registering this component, allowing mutable access to its ComponentHooks.

impl Default for Camera2dRoot

fn default() -> Self

Returns the “default value” for a type.

impl UiRoot for Camera2dRoot

type Param = ()

The parameter required for computing the transform and available space.

type Item = (&'static Camera, &'static OrthographicProjection, Has<UiUnrounded>)

Necessary neighbor components. Failing to fetch these will make the measure output as zero.

fn compute_root_transform( &mut self, _: &mut SystemParamItem<'_, '_, Self::Param>, (camera, projection, is_unrounded): QueryItem<'_, Self::Item>, ) -> (Transform, Vec2)

Computes the root transform. The returned Transform should be located at the bottom-left vertex of the available space box.

impl Copy for Camera2dRoot