Struct bevy::animation::AnimationTargetId
pub struct AnimationTargetId(pub Uuid);
Expand description
A unique UUID for an animation target (e.g. bone in a skinned mesh).
The AnimationClip
asset and the AnimationTarget
component both use
this to refer to targets (e.g. bones in a skinned mesh) to be animated.
When importing an armature or an animation clip, asset loaders typically use
the full path name from the armature to the bone to generate these UUIDs.
The ID is unique to the full path name and based only on the names. So, for
example, any imported armature with a bone at the root named Hips
will
assign the same AnimationTargetId
to its root bone. Likewise, any
imported animation clip that animates a root bone named Hips
will
reference the same AnimationTargetId
. Any animation is playable on any
armature as long as the bone names match, which allows for easy animation
retargeting.
Note that asset loaders generally use the full path name to generate the
AnimationTargetId
. Thus a bone named Chest
directly connected to a
bone named Hips
will have a different ID from a bone named Chest
that’s
connected to a bone named Stomach
.
Tuple Fields§
§0: Uuid
Implementations§
§impl AnimationTargetId
impl AnimationTargetId
pub fn from_names<'a>(
names: impl Iterator<Item = &'a Name>
) -> AnimationTargetId
pub fn from_names<'a>( names: impl Iterator<Item = &'a Name> ) -> AnimationTargetId
Creates a new AnimationTargetId
by hashing a list of names.
Typically, this will be the path from the animation root to the animation target (e.g. bone) that is to be animated.
Examples found in repository?
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fn setup(
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<StandardMaterial>>,
mut animations: ResMut<Assets<AnimationClip>>,
mut graphs: ResMut<Assets<AnimationGraph>>,
) {
// Camera
commands.spawn(Camera3dBundle {
transform: Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
..default()
});
// Light
commands.spawn(PointLightBundle {
point_light: PointLight {
intensity: 500_000.0,
..default()
},
transform: Transform::from_xyz(0.0, 2.5, 0.0),
..default()
});
// Let's use the `Name` component to target entities. We can use anything we
// like, but names are convenient.
let planet = Name::new("planet");
let orbit_controller = Name::new("orbit_controller");
let satellite = Name::new("satellite");
// Creating the animation
let mut animation = AnimationClip::default();
// A curve can modify a single part of a transform, here the translation
let planet_animation_target_id = AnimationTargetId::from_name(&planet);
animation.add_curve_to_target(
planet_animation_target_id,
VariableCurve {
keyframe_timestamps: vec![0.0, 1.0, 2.0, 3.0, 4.0],
keyframes: Keyframes::Translation(vec![
Vec3::new(1.0, 0.0, 1.0),
Vec3::new(-1.0, 0.0, 1.0),
Vec3::new(-1.0, 0.0, -1.0),
Vec3::new(1.0, 0.0, -1.0),
// in case seamless looping is wanted, the last keyframe should
// be the same as the first one
Vec3::new(1.0, 0.0, 1.0),
]),
interpolation: Interpolation::Linear,
},
);
// Or it can modify the rotation of the transform.
// To find the entity to modify, the hierarchy will be traversed looking for
// an entity with the right name at each level
let orbit_controller_animation_target_id =
AnimationTargetId::from_names([planet.clone(), orbit_controller.clone()].iter());
animation.add_curve_to_target(
orbit_controller_animation_target_id,
VariableCurve {
keyframe_timestamps: vec![0.0, 1.0, 2.0, 3.0, 4.0],
keyframes: Keyframes::Rotation(vec![
Quat::IDENTITY,
Quat::from_axis_angle(Vec3::Y, PI / 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 3.),
Quat::IDENTITY,
]),
interpolation: Interpolation::Linear,
},
);
// If a curve in an animation is shorter than the other, it will not repeat
// until all other curves are finished. In that case, another animation should
// be created for each part that would have a different duration / period
let satellite_animation_target_id = AnimationTargetId::from_names(
[planet.clone(), orbit_controller.clone(), satellite.clone()].iter(),
);
animation.add_curve_to_target(
satellite_animation_target_id,
VariableCurve {
keyframe_timestamps: vec![0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0],
keyframes: Keyframes::Scale(vec![
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
]),
interpolation: Interpolation::Linear,
},
);
// There can be more than one curve targeting the same entity path
animation.add_curve_to_target(
AnimationTargetId::from_names(
[planet.clone(), orbit_controller.clone(), satellite.clone()].iter(),
),
VariableCurve {
keyframe_timestamps: vec![0.0, 1.0, 2.0, 3.0, 4.0],
keyframes: Keyframes::Rotation(vec![
Quat::IDENTITY,
Quat::from_axis_angle(Vec3::Y, PI / 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 3.),
Quat::IDENTITY,
]),
interpolation: Interpolation::Linear,
},
);
// Create the animation graph
let (graph, animation_index) = AnimationGraph::from_clip(animations.add(animation));
// Create the animation player, and set it to repeat
let mut player = AnimationPlayer::default();
player.play(animation_index).repeat();
// Create the scene that will be animated
// First entity is the planet
let planet_entity = commands
.spawn((
PbrBundle {
mesh: meshes.add(Sphere::default()),
material: materials.add(Color::srgb(0.8, 0.7, 0.6)),
..default()
},
// Add the animation graph and player
planet,
graphs.add(graph),
player,
))
.id();
commands
.entity(planet_entity)
.insert(AnimationTarget {
id: planet_animation_target_id,
player: planet_entity,
})
.with_children(|p| {
// This entity is just used for animation, but doesn't display anything
p.spawn((
SpatialBundle::INHERITED_IDENTITY,
orbit_controller,
AnimationTarget {
id: orbit_controller_animation_target_id,
player: planet_entity,
},
))
.with_children(|p| {
// The satellite, placed at a distance of the planet
p.spawn((
PbrBundle {
transform: Transform::from_xyz(1.5, 0.0, 0.0),
mesh: meshes.add(Cuboid::new(0.5, 0.5, 0.5)),
material: materials.add(Color::srgb(0.3, 0.9, 0.3)),
..default()
},
AnimationTarget {
id: satellite_animation_target_id,
player: planet_entity,
},
satellite,
));
});
});
}
pub fn from_name(name: &Name) -> AnimationTargetId
pub fn from_name(name: &Name) -> AnimationTargetId
Creates a new AnimationTargetId
by hashing a single name.
Examples found in repository?
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fn setup(
mut commands: Commands,
mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<StandardMaterial>>,
mut animations: ResMut<Assets<AnimationClip>>,
mut graphs: ResMut<Assets<AnimationGraph>>,
) {
// Camera
commands.spawn(Camera3dBundle {
transform: Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
..default()
});
// Light
commands.spawn(PointLightBundle {
point_light: PointLight {
intensity: 500_000.0,
..default()
},
transform: Transform::from_xyz(0.0, 2.5, 0.0),
..default()
});
// Let's use the `Name` component to target entities. We can use anything we
// like, but names are convenient.
let planet = Name::new("planet");
let orbit_controller = Name::new("orbit_controller");
let satellite = Name::new("satellite");
// Creating the animation
let mut animation = AnimationClip::default();
// A curve can modify a single part of a transform, here the translation
let planet_animation_target_id = AnimationTargetId::from_name(&planet);
animation.add_curve_to_target(
planet_animation_target_id,
VariableCurve {
keyframe_timestamps: vec![0.0, 1.0, 2.0, 3.0, 4.0],
keyframes: Keyframes::Translation(vec![
Vec3::new(1.0, 0.0, 1.0),
Vec3::new(-1.0, 0.0, 1.0),
Vec3::new(-1.0, 0.0, -1.0),
Vec3::new(1.0, 0.0, -1.0),
// in case seamless looping is wanted, the last keyframe should
// be the same as the first one
Vec3::new(1.0, 0.0, 1.0),
]),
interpolation: Interpolation::Linear,
},
);
// Or it can modify the rotation of the transform.
// To find the entity to modify, the hierarchy will be traversed looking for
// an entity with the right name at each level
let orbit_controller_animation_target_id =
AnimationTargetId::from_names([planet.clone(), orbit_controller.clone()].iter());
animation.add_curve_to_target(
orbit_controller_animation_target_id,
VariableCurve {
keyframe_timestamps: vec![0.0, 1.0, 2.0, 3.0, 4.0],
keyframes: Keyframes::Rotation(vec![
Quat::IDENTITY,
Quat::from_axis_angle(Vec3::Y, PI / 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 3.),
Quat::IDENTITY,
]),
interpolation: Interpolation::Linear,
},
);
// If a curve in an animation is shorter than the other, it will not repeat
// until all other curves are finished. In that case, another animation should
// be created for each part that would have a different duration / period
let satellite_animation_target_id = AnimationTargetId::from_names(
[planet.clone(), orbit_controller.clone(), satellite.clone()].iter(),
);
animation.add_curve_to_target(
satellite_animation_target_id,
VariableCurve {
keyframe_timestamps: vec![0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0],
keyframes: Keyframes::Scale(vec![
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
Vec3::splat(1.2),
Vec3::splat(0.8),
]),
interpolation: Interpolation::Linear,
},
);
// There can be more than one curve targeting the same entity path
animation.add_curve_to_target(
AnimationTargetId::from_names(
[planet.clone(), orbit_controller.clone(), satellite.clone()].iter(),
),
VariableCurve {
keyframe_timestamps: vec![0.0, 1.0, 2.0, 3.0, 4.0],
keyframes: Keyframes::Rotation(vec![
Quat::IDENTITY,
Quat::from_axis_angle(Vec3::Y, PI / 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 2.),
Quat::from_axis_angle(Vec3::Y, PI / 2. * 3.),
Quat::IDENTITY,
]),
interpolation: Interpolation::Linear,
},
);
// Create the animation graph
let (graph, animation_index) = AnimationGraph::from_clip(animations.add(animation));
// Create the animation player, and set it to repeat
let mut player = AnimationPlayer::default();
player.play(animation_index).repeat();
// Create the scene that will be animated
// First entity is the planet
let planet_entity = commands
.spawn((
PbrBundle {
mesh: meshes.add(Sphere::default()),
material: materials.add(Color::srgb(0.8, 0.7, 0.6)),
..default()
},
// Add the animation graph and player
planet,
graphs.add(graph),
player,
))
.id();
commands
.entity(planet_entity)
.insert(AnimationTarget {
id: planet_animation_target_id,
player: planet_entity,
})
.with_children(|p| {
// This entity is just used for animation, but doesn't display anything
p.spawn((
SpatialBundle::INHERITED_IDENTITY,
orbit_controller,
AnimationTarget {
id: orbit_controller_animation_target_id,
player: planet_entity,
},
))
.with_children(|p| {
// The satellite, placed at a distance of the planet
p.spawn((
PbrBundle {
transform: Transform::from_xyz(1.5, 0.0, 0.0),
mesh: meshes.add(Cuboid::new(0.5, 0.5, 0.5)),
material: materials.add(Color::srgb(0.3, 0.9, 0.3)),
..default()
},
AnimationTarget {
id: satellite_animation_target_id,
player: planet_entity,
},
satellite,
));
});
});
}
Trait Implementations§
§impl Clone for AnimationTargetId
impl Clone for AnimationTargetId
§fn clone(&self) -> AnimationTargetId
fn clone(&self) -> AnimationTargetId
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read more§impl Debug for AnimationTargetId
impl Debug for AnimationTargetId
§impl From<&Name> for AnimationTargetId
impl From<&Name> for AnimationTargetId
§fn from(name: &Name) -> AnimationTargetId
fn from(name: &Name) -> AnimationTargetId
§impl FromReflect for AnimationTargetId
impl FromReflect for AnimationTargetId
§fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<AnimationTargetId>
fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<AnimationTargetId>
Self
from a reflected value.§fn take_from_reflect(
reflect: Box<dyn Reflect>
) -> Result<Self, Box<dyn Reflect>>
fn take_from_reflect( reflect: Box<dyn Reflect> ) -> Result<Self, Box<dyn Reflect>>
Self
using,
constructing the value using from_reflect
if that fails. Read more§impl GetTypeRegistration for AnimationTargetId
impl GetTypeRegistration for AnimationTargetId
§fn get_type_registration() -> TypeRegistration
fn get_type_registration() -> TypeRegistration
TypeRegistration
for this type.§fn register_type_dependencies(registry: &mut TypeRegistry)
fn register_type_dependencies(registry: &mut TypeRegistry)
§impl Hash for AnimationTargetId
impl Hash for AnimationTargetId
§impl Ord for AnimationTargetId
impl Ord for AnimationTargetId
§fn cmp(&self, other: &AnimationTargetId) -> Ordering
fn cmp(&self, other: &AnimationTargetId) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
§impl PartialEq for AnimationTargetId
impl PartialEq for AnimationTargetId
§fn eq(&self, other: &AnimationTargetId) -> bool
fn eq(&self, other: &AnimationTargetId) -> bool
self
and other
values to be equal, and is used
by ==
.§impl PartialOrd for AnimationTargetId
impl PartialOrd for AnimationTargetId
§fn partial_cmp(&self, other: &AnimationTargetId) -> Option<Ordering>
fn partial_cmp(&self, other: &AnimationTargetId) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read more§impl Reflect for AnimationTargetId
impl Reflect for AnimationTargetId
§fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
§fn into_any(self: Box<AnimationTargetId>) -> Box<dyn Any>
fn into_any(self: Box<AnimationTargetId>) -> Box<dyn Any>
Box<dyn Any>
.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
&mut dyn Any
.§fn into_reflect(self: Box<AnimationTargetId>) -> Box<dyn Reflect>
fn into_reflect(self: Box<AnimationTargetId>) -> Box<dyn Reflect>
§fn as_reflect(&self) -> &(dyn Reflect + 'static)
fn as_reflect(&self) -> &(dyn Reflect + 'static)
§fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
§fn clone_value(&self) -> Box<dyn Reflect>
fn clone_value(&self) -> Box<dyn Reflect>
Reflect
trait object. Read more§fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>
fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>
§fn apply(&mut self, value: &(dyn Reflect + 'static))
fn apply(&mut self, value: &(dyn Reflect + 'static))
§fn reflect_kind(&self) -> ReflectKind
fn reflect_kind(&self) -> ReflectKind
§fn reflect_ref(&self) -> ReflectRef<'_>
fn reflect_ref(&self) -> ReflectRef<'_>
§fn reflect_mut(&mut self) -> ReflectMut<'_>
fn reflect_mut(&mut self) -> ReflectMut<'_>
§fn reflect_owned(self: Box<AnimationTargetId>) -> ReflectOwned
fn reflect_owned(self: Box<AnimationTargetId>) -> ReflectOwned
§fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>
fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>
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fn reflect_hash(&self) -> Option<u64>
§fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>
fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>
§fn serializable(&self) -> Option<Serializable<'_>>
fn serializable(&self) -> Option<Serializable<'_>>
§fn is_dynamic(&self) -> bool
fn is_dynamic(&self) -> bool
§impl TupleStruct for AnimationTargetId
impl TupleStruct for AnimationTargetId
§fn field(&self, index: usize) -> Option<&(dyn Reflect + 'static)>
fn field(&self, index: usize) -> Option<&(dyn Reflect + 'static)>
index
as a
&dyn Reflect
.§fn field_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>
fn field_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>
index
as a &mut dyn Reflect
.§fn iter_fields(&self) -> TupleStructFieldIter<'_> ⓘ
fn iter_fields(&self) -> TupleStructFieldIter<'_> ⓘ
§fn clone_dynamic(&self) -> DynamicTupleStruct
fn clone_dynamic(&self) -> DynamicTupleStruct
DynamicTupleStruct
.§impl TypePath for AnimationTargetId
impl TypePath for AnimationTargetId
§fn short_type_path() -> &'static str
fn short_type_path() -> &'static str
§fn type_ident() -> Option<&'static str>
fn type_ident() -> Option<&'static str>
§fn crate_name() -> Option<&'static str>
fn crate_name() -> Option<&'static str>
§impl Typed for AnimationTargetId
impl Typed for AnimationTargetId
impl Copy for AnimationTargetId
impl Eq for AnimationTargetId
impl StructuralPartialEq for AnimationTargetId
Auto Trait Implementations§
impl Freeze for AnimationTargetId
impl RefUnwindSafe for AnimationTargetId
impl Send for AnimationTargetId
impl Sync for AnimationTargetId
impl Unpin for AnimationTargetId
impl UnwindSafe for AnimationTargetId
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impl<T, U> AsBindGroupShaderType<U> for T
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. When used in AsBindGroup
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source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more