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GlobalTransform

Struct GlobalTransform 

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pub struct GlobalTransform(pub AffineTransform);
Expand description

A component that stores the final, calculated, world-space transformation of an entity.

This component’s value is the result of combining the entity’s local Transform with the GlobalTransform of its Parent, recursively up to the root of the scene.

It is intended to be read-only for most systems (like rendering and physics). It should only be written to by the dedicated transform propagation system. This acts as a cache to avoid re-calculating the full transform hierarchy every time it’s needed.

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§0: AffineTransform

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impl GlobalTransform

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pub fn new(matrix: Mat4) -> Self

Creates a new GlobalTransform from a Mat4.

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pub fn identity() -> Self

Creates a new identity GlobalTransform.

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pub fn to_matrix(&self) -> Mat4

Returns the inner Mat4 representation.

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pub fn at_position(position: Vec3) -> Self

Creates a GlobalTransform representing a translation.

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impl Clone for GlobalTransform

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fn clone(&self) -> GlobalTransform

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Component for GlobalTransform

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fn make_column() -> Box<dyn AnyVec>
where Self: Sized,

Creates this component’s empty storage column. Default: an AoS Vec<Self>.
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fn push_into_column(self, column: &mut dyn AnyVec)
where Self: Sized,

Appends self as a new row into its column. Read more
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fn copy_row_between(src: &dyn AnyVec, src_row: usize, dst: &mut dyn AnyVec)
where Self: Sized,

Clones row src_row from src into dst (used when an entity migrates between pages on a structural change). Both columns are this component’s column type. Read more
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fn clone_from_column(column: &dyn AnyVec, row: usize) -> Self
where Self: Sized,

Reads row row of column as an owned value — the uniform by-value access path that works for both AoS (clone the &T) and field-SoA (gather the fields) layouts. Used by World::clone_component, the Soa<T> query, and the serialization recipe. Read more
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fn set_in_column(self, column: &mut dyn AnyVec, row: usize)
where Self: Sized,

Overwrites row row of column with self — the uniform by-value write path for both layouts (AoS assigns the slot; field-SoA scatters into the lanes). Used by World::set_component. Read more
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impl Debug for GlobalTransform

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

Formats the value using the given formatter. Read more
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impl Default for GlobalTransform

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fn default() -> Self

Returns the identity GlobalTransform.

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impl PartialEq for GlobalTransform

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fn eq(&self, other: &GlobalTransform) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for GlobalTransform

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impl StructuralPartialEq for GlobalTransform

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> AppLifecycle for T
where T: ?Sized,

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fn on_start(&mut self, ctx: &mut dyn AppContext)

Called once after the backend is up but before the first update. Apps install their theme / fonts here.
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fn on_exit(&mut self)

Called once when the window is closing. Persist state here.
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impl<T> AsAny for T
where T: Any,

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fn as_any(&self) -> &(dyn Any + 'static)

Returns a reference to the inner value as &dyn Any.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<C1> ComponentBundle for C1
where C1: Component,

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fn type_ids() -> Vec<TypeId>

Returns the sorted list of TypeIds for the components in this bundle. Read more
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fn create_columns() -> HashMap<TypeId, Box<dyn AnyVec>>

Creates the set of empty, type-erased Vec<T> columns required to store this bundle’s components. Read more
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fn update_metadata( metadata: &mut EntityMetadata, location: PageIndex, registry: &ComponentRegistry, )

Updates the appropriate fields in an EntityMetadata struct to point to the location of this bundle’s data. Read more
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unsafe fn add_to_page(self, page: &mut ComponentPage)

Adds the components from this bundle into the specified ComponentPage. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.