Struct amethyst_ui::UiTransformSystem

pub struct UiTransformSystem { /* fields omitted */ }

Manages the Parent component on entities having UiTransform It does almost the same as the TransformSystem, but with some differences, like UiTransform alignment and stretching.

Methods

impl UiTransformSystem

pub fn new(
    transform_events_id: ReaderId<ComponentEvent>,
    parent_events_id: ReaderId<HierarchyEvent>
) -> Self

Creates a new UiTransformSystem.

Trait Implementations

impl Debug for UiTransformSystem

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

Formats the value using the given formatter.

impl<'a, 'b> SystemDesc<'a, 'b, UiTransformSystem> for UiTransformSystemDesc

fn build(self, world: &mut World) -> UiTransformSystem

Builds and returns a System.

impl<'a> System<'a> for UiTransformSystem

type SystemData = (WriteStorage<'a, UiTransform>, ReadStorage<'a, Parent>, ReadExpect<'a, ScreenDimensions>, ReadExpect<'a, ParentHierarchy>)

The resource bundle required to execute this system.

fn run(&mut self, data: Self::SystemData)

Executes the system with the required system data.

fn running_time(&self) -> RunningTime

Returns a hint how long the system needs for running. This is used to optimize the way they're executed (might allow more parallelization).

fn accessor(&'b self) -> AccessorCow<'a, 'b, Self>

Return the accessor from the [SystemData].

fn setup(&mut self, world: &mut World)

Sets up the World using Self::SystemData::setup.

fn dispose(self, world: &mut World)

Performs clean up that requires resources from the World. This commonly removes components from world which depend on external resources.