Struct UnevenSampleAutoCurve 

pub struct UnevenSampleAutoCurve<T> { /* private fields */ }

A curve that is defined by interpolation over unevenly spaced samples, interpolated automatically using a particularly well-behaved interpolation.

Implementations

impl<T> UnevenSampleAutoCurve<T>

pub fn new( timed_samples: impl IntoIterator<Item = (f32, T)>, ) -> Result<UnevenSampleAutoCurve<T>, UnevenCoreError>

Available on crate feature alloc only.

Create a new UnevenSampleAutoCurve from a given set of timed samples.

The samples are filtered to finite times and sorted internally; if there are not at least 2 valid timed samples, an error will be returned.

Examples found in repository

examples/animation/animated_transform.rs (lines 58-66)

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((
        Camera3d::default(),
        Transform::from_xyz(-2.0, 2.5, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
    ));

    // Light
    commands.spawn((
        PointLight {
            intensity: 500_000.0,
            ..default()
        },
        Transform::from_xyz(0.0, 2.5, 0.0),
    ));

    // 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,
        AnimatableCurve::new(
            animated_field!(Transform::translation),
            UnevenSampleAutoCurve::new([0.0, 1.0, 2.0, 3.0, 4.0].into_iter().zip([
                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),
            ]))
            .expect("should be able to build translation curve because we pass in valid samples"),
        ),
    );
    // 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,
        AnimatableCurve::new(
            animated_field!(Transform::rotation),
            UnevenSampleAutoCurve::new([0.0, 1.0, 2.0, 3.0, 4.0].into_iter().zip([
                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,
            ]))
            .expect("Failed to build rotation curve"),
        ),
    );
    // 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,
        AnimatableCurve::new(
            animated_field!(Transform::scale),
            UnevenSampleAutoCurve::new(
                [0.0, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0]
                    .into_iter()
                    .zip([
                        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),
                    ]),
            )
            .expect("Failed to build scale curve"),
        ),
    );
    // 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(),
        ),
        AnimatableCurve::new(
            animated_field!(Transform::rotation),
            UnevenSampleAutoCurve::new([0.0, 1.0, 2.0, 3.0, 4.0].into_iter().zip([
                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,
            ]))
            .expect("should be able to build translation curve because we pass in valid samples"),
        ),
    );

    // 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((
            Mesh3d(meshes.add(Sphere::default())),
            MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
            // Add the animation graph and player
            planet,
            AnimationGraphHandle(graphs.add(graph)),
            player,
        ))
        .id();
    commands.entity(planet_entity).insert((
        AnimationTarget {
            id: planet_animation_target_id,
            player: planet_entity,
        },
        children![(
            Transform::default(),
            Visibility::default(),
            orbit_controller,
            AnimationTarget {
                id: orbit_controller_animation_target_id,
                player: planet_entity,
            },
            children![(
                Mesh3d(meshes.add(Cuboid::new(0.5, 0.5, 0.5))),
                MeshMaterial3d(materials.add(Color::srgb(0.3, 0.9, 0.3))),
                Transform::from_xyz(1.5, 0.0, 0.0),
                AnimationTarget {
                    id: satellite_animation_target_id,
                    player: planet_entity,
                },
                satellite,
            )],
        )],
    ));
}

pub fn map_sample_times( self, f: impl Fn(f32) -> f32, ) -> UnevenSampleAutoCurve<T>

Available on crate feature alloc only.

This UnevenSampleAutoCurve, but with the sample times moved by the map f. In principle, when f is monotone, this is equivalent to CurveExt::reparametrize, but the function inputs to each are inverses of one another.

The samples are re-sorted by time after mapping and deduplicated by output time, so the function f should generally be injective over the sample times of the curve.

Trait Implementations

impl<T> Clone for UnevenSampleAutoCurve<T>

where T: Clone,

fn clone(&self) -> UnevenSampleAutoCurve<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Curve<T> for UnevenSampleAutoCurve<T>

where T: StableInterpolate,

fn domain(&self) -> Interval

The interval over which this curve is parametrized.

fn sample_clamped(&self, t: f32) -> T

Sample a point on this curve at the parameter value t, clamping t to lie inside the domain of the curve.

fn sample_unchecked(&self, t: f32) -> T

Sample a point on this curve at the parameter value t, extracting the associated value. This is the unchecked version of sampling, which should only be used if the sample time t is already known to lie within the curve’s domain.

fn sample(&self, t: f32) -> Option<T>

Sample a point on this curve at the parameter value t, returning None if the point is outside of the curve’s domain.

impl<T> Debug for UnevenSampleAutoCurve<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<'de, T> Deserialize<'de> for UnevenSampleAutoCurve<T>

where T: Deserialize<'de>,

fn deserialize<__D>( __deserializer: __D, ) -> Result<UnevenSampleAutoCurve<T>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> FromArg for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

type This<'from_arg> = UnevenSampleAutoCurve<T>

The type to convert into.

fn from_arg( arg: Arg<'_>, ) -> Result<<UnevenSampleAutoCurve<T> as FromArg>::This<'_>, ArgError>

Creates an item from an argument.

impl<T> FromReflect for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn from_reflect( reflect: &(dyn PartialReflect + 'static), ) -> Option<UnevenSampleAutoCurve<T>>

Constructs a concrete instance of Self from a reflected value.

fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails.

impl<T> GetOwnership for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn ownership() -> Ownership

Returns the ownership of Self.

impl<T> GetTypeRegistration for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.

fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type.

impl<T> IntoReturn for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn into_return<'into_return>(self) -> Return<'into_return>

where UnevenSampleAutoCurve<T>: 'into_return,

Converts Self into a Return value.

impl<T> PartialReflect for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value.

fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value.

fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type.

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type.

fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type.

fn reflect_owned(self: Box<UnevenSampleAutoCurve<T>>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<UnevenSampleAutoCurve<T>>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>

Attempts to cast this type to a boxed, fully-reflected value.

fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>

Attempts to cast this type to a fully-reflected value.

fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>

Attempts to cast this type to a mutable, fully-reflected value.

fn into_partial_reflect( self: Box<UnevenSampleAutoCurve<T>>, ) -> Box<dyn PartialReflect>

Casts this type to a boxed, reflected value.

fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)

Casts this type to a reflected value.

fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)

Casts this type to a mutable, reflected value.

fn reflect_partial_eq( &self, value: &(dyn PartialReflect + 'static), ) -> Option<bool>

Returns a “partial equality” comparison result.

fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>

Attempts to clone Self using reflection.

fn apply(&mut self, value: &(dyn PartialReflect + 'static))

Applies a reflected value to this value.

fn to_dynamic(&self) -> Box<dyn PartialReflect>

Converts this reflected value into its dynamic representation based on its kind.

fn reflect_clone_and_take<T>(&self) -> Result<T, ReflectCloneError>

where T: 'static, Self: Sized + TypePath,

For a type implementing PartialReflect, combines reflect_clone and take in a useful fashion, automatically constructing an appropriate ReflectCloneError if the downcast fails.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

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

Debug formatter for the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl<T> Reflect for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn into_any(self: Box<UnevenSampleAutoCurve<T>>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.

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

Returns the value as a &dyn Any.

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

Returns the value as a &mut dyn Any.

fn into_reflect(self: Box<UnevenSampleAutoCurve<T>>) -> Box<dyn Reflect>

Casts this type to a boxed, fully-reflected value.

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a fully-reflected value.

fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable, fully-reflected value.

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value.

impl<T> Serialize for UnevenSampleAutoCurve<T>

where T: Serialize,

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<T> Struct for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn field(&self, name: &str) -> Option<&(dyn PartialReflect + 'static)>

Returns a reference to the value of the field named name as a &dyn PartialReflect.

fn field_mut( &mut self, name: &str, ) -> Option<&mut (dyn PartialReflect + 'static)>

Returns a mutable reference to the value of the field named name as a &mut dyn PartialReflect.

fn field_at(&self, index: usize) -> Option<&(dyn PartialReflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn PartialReflect.

fn field_at_mut( &mut self, index: usize, ) -> Option<&mut (dyn PartialReflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn PartialReflect.

fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.

fn field_len(&self) -> usize

Returns the number of fields in the struct.

fn iter_fields(&self) -> FieldIter<'_>

Returns an iterator over the values of the reflectable fields for this struct.

fn to_dynamic_struct(&self) -> DynamicStruct

Creates a new DynamicStruct from this struct.

fn get_represented_struct_info(&self) -> Option<&'static StructInfo>

Will return None if TypeInfo is not available.

impl<T> TypePath for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath,

fn type_path() -> &'static str

Returns the fully qualified path of the underlying type.

fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type.

fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous.

fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous.

fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous.

impl<T> Typed for UnevenSampleAutoCurve<T>

where UnevenSampleAutoCurve<T>: Any + Send + Sync, T: TypePath, UnevenCore<T>: FromReflect + TypePath + MaybeTyped + RegisterForReflection,

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.