Struct Transform 

pub struct Transform {
    pub translation: Vec3,
    pub rotation: Quaternion,
    pub scale: Vec3,
}

A component that describes an entity’s position, rotation, and scale relative to its Parent. If the entity has no Parent, this is relative to the world origin.

This is the component that users and other systems should modify. A dedicated transform propagation system will use this component’s value to calculate the final GlobalTransform.

Fields

translation: Vec3

The translation (position) of the entity.

rotation: Quaternion

The rotation of the entity, represented as a quaternion.

scale: Vec3

The scale of the entity.

Implementations

impl Transform

pub fn new(translation: Vec3, rotation: Quaternion, scale: Vec3) -> Transform

Creates a new Transform with a given translation, rotation, and scale.

pub fn from_translation(translation: Vec3) -> Transform

Creates a new Transform with a given translation, and identity rotation/scale.

pub fn identity() -> Transform

Creates a new identity Transform, with no translation, rotation, or scaling. This represents the origin.

pub fn to_mat4(&self) -> Mat4

Calculates the Mat4 transformation matrix from this component’s translation, rotation, and scale.

The final matrix is calculated in the standard Scale -> Rotate -> Translate order.

Trait Implementations

impl Clone for Transform

fn clone(&self) -> Transform

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for Transform

fn make_column() -> Box<dyn AnyVec>

where Self: Sized,

Creates this component’s empty storage column. Default: an AoS Vec<Self>.

fn push_into_column(self, column: &mut (dyn AnyVec + 'static))

where Self: Sized,

Appends self as a new row into its column.

fn copy_row_between( src: &(dyn AnyVec + 'static), src_row: usize, dst: &mut (dyn AnyVec + 'static), )

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.

fn clone_from_column(column: &(dyn AnyVec + 'static), 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.

fn set_in_column(self, column: &mut (dyn AnyVec + 'static), 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.

impl Debug for Transform

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

Formats the value using the given formatter.

impl Default for Transform

fn default() -> Transform

Returns the identity Transform.

impl PartialEq for Transform

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for Transform

impl StructuralPartialEq for Transform