Struct FunctionCurve 

pub struct FunctionCurve<T, F> { /* private fields */ }

Available on crate feature bevy_curve only.

A curve defined by a function together with a fixed domain.

This is a curve that holds an inner function f which takes numbers (f32) as input and produces output of type T. The value of this curve when sampled at time t is just f(t).

Implementations

impl<T, F> FunctionCurve<T, F>

where F: Fn(f32) -> T,

pub fn new(domain: Interval, function: F) -> FunctionCurve<T, F>

Create a new curve with the given domain from the given function. When sampled, the function is evaluated at the sample time to compute the output.

Examples found in repository

examples/gizmos/2d_gizmos.rs (line 81)

fn draw_example_collection(
    mut gizmos: Gizmos,
    mut my_gizmos: Gizmos<MyRoundGizmos>,
    time: Res<Time>,
) {
    let sin_t_scaled = ops::sin(time.elapsed_secs()) * 50.;
    gizmos.line_2d(Vec2::Y * -sin_t_scaled, Vec2::splat(-80.), RED);
    gizmos.ray_2d(Vec2::Y * sin_t_scaled, Vec2::splat(80.), LIME);

    gizmos
        .grid_2d(
            Isometry2d::IDENTITY,
            UVec2::new(16, 9),
            Vec2::new(80., 80.),
            // Dark gray
            LinearRgba::gray(0.05),
        )
        .outer_edges();

    // Triangle
    gizmos.linestrip_gradient_2d([
        (Vec2::Y * 300., BLUE),
        (Vec2::new(-255., -155.), RED),
        (Vec2::new(255., -155.), LIME),
        (Vec2::Y * 300., BLUE),
    ]);

    gizmos.rect_2d(Isometry2d::IDENTITY, Vec2::splat(650.), BLACK);

    gizmos.cross_2d(Vec2::new(-160., 120.), 12., FUCHSIA);

    let domain = Interval::EVERYWHERE;
    let curve = FunctionCurve::new(domain, |t| Vec2::new(t, ops::sin(t / 25.0) * 100.0));
    let resolution = ((ops::sin(time.elapsed_secs()) + 1.0) * 50.0) as usize;
    let times_and_colors = (0..=resolution)
        .map(|n| n as f32 / resolution as f32)
        .map(|t| (t - 0.5) * 600.0)
        .map(|t| (t, TEAL.mix(&HOT_PINK, (t + 300.0) / 600.0)));
    gizmos.curve_gradient_2d(curve, times_and_colors);

    my_gizmos
        .rounded_rect_2d(Isometry2d::IDENTITY, Vec2::splat(630.), BLACK)
        .corner_radius(ops::cos(time.elapsed_secs() / 3.) * 100.);

    // Circles have 32 line-segments by default.
    // You may want to increase this for larger circles.
    my_gizmos
        .circle_2d(Isometry2d::IDENTITY, 300., NAVY)
        .resolution(64);

    my_gizmos.ellipse_2d(
        Rot2::radians(time.elapsed_secs() % TAU),
        Vec2::new(100., 200.),
        YELLOW_GREEN,
    );

    // Arcs default resolution is linearly interpolated between
    // 1 and 32, using the arc length as scalar.
    my_gizmos.arc_2d(
        Rot2::radians(sin_t_scaled / 10.),
        FRAC_PI_2,
        310.,
        ORANGE_RED,
    );
    my_gizmos.arc_2d(Isometry2d::IDENTITY, FRAC_PI_2, 80.0, ORANGE_RED);
    my_gizmos.long_arc_2d_between(Vec2::ZERO, Vec2::X * 20.0, Vec2::Y * 20.0, ORANGE_RED);
    my_gizmos.short_arc_2d_between(Vec2::ZERO, Vec2::X * 40.0, Vec2::Y * 40.0, ORANGE_RED);

    gizmos.arrow_2d(
        Vec2::ZERO,
        Vec2::from_angle(sin_t_scaled / -10. + PI / 2.) * 50.,
        YELLOW,
    );

    // You can create more complex arrows using the arrow builder.
    gizmos
        .arrow_2d(
            Vec2::ZERO,
            Vec2::from_angle(sin_t_scaled / -10.) * 50.,
            GREEN,
        )
        .with_double_end()
        .with_tip_length(10.);

    my_gizmos.arc_2d(Isometry2d::default(), FRAC_PI_2, 210., OLD_LACE);
}

examples/gizmos/3d_gizmos.rs (lines 158-160)

fn draw_example_collection(
    mut gizmos: Gizmos,
    mut my_gizmos: Gizmos<MyRoundGizmos>,
    time: Res<Time>,
) {
    gizmos.grid(
        Quat::from_rotation_x(PI / 2.),
        UVec2::splat(20),
        Vec2::new(2., 2.),
        // Light gray
        LinearRgba::gray(0.65),
    );
    gizmos.grid(
        Isometry3d::new(Vec3::splat(10.0), Quat::from_rotation_x(PI / 3. * 2.)),
        UVec2::splat(20),
        Vec2::new(2., 2.),
        PURPLE,
    );
    gizmos.sphere(Vec3::splat(10.0), 1.0, PURPLE);

    gizmos
        .primitive_3d(
            &Plane3d {
                normal: Dir3::Y,
                half_size: Vec2::splat(1.0),
            },
            Isometry3d::new(
                Vec3::splat(4.0) + Vec2::from(ops::sin_cos(time.elapsed_secs())).extend(0.0),
                Quat::from_rotation_x(PI / 2. + time.elapsed_secs()),
            ),
            GREEN,
        )
        .cell_count(UVec2::new(5, 10))
        .spacing(Vec2::new(0.2, 0.1));

    gizmos.cube(
        Transform::from_translation(Vec3::Y * 0.5).with_scale(Vec3::splat(1.25)),
        BLACK,
    );
    gizmos.rect(
        Isometry3d::new(
            Vec3::new(ops::cos(time.elapsed_secs()) * 2.5, 1., 0.),
            Quat::from_rotation_y(PI / 2.),
        ),
        Vec2::splat(2.),
        LIME,
    );

    gizmos.cross(Vec3::new(-1., 1., 1.), 0.5, FUCHSIA);

    let domain = Interval::EVERYWHERE;
    let curve = FunctionCurve::new(domain, |t| {
        (Vec2::from(ops::sin_cos(t * 10.0))).extend(t - 6.0)
    });
    let resolution = ((ops::sin(time.elapsed_secs()) + 1.0) * 100.0) as usize;
    let times_and_colors = (0..=resolution)
        .map(|n| n as f32 / resolution as f32)
        .map(|t| t * 5.0)
        .map(|t| (t, TEAL.mix(&HOT_PINK, t / 5.0)));
    gizmos.curve_gradient_3d(curve, times_and_colors);

    gizmos.primitive_3d(
        &Capsule3d::new(0.35, 0.5),
        Isometry3d::new(
            Vec3::new(-1.75, 0.75, 0.75),
            Quat::from_rotation_y(ops::cos(time.elapsed_secs() / 2.0) * 10.0)
                * Quat::from_rotation_z(PI / 3.0),
        ),
        YELLOW_GREEN,
    );

    my_gizmos.sphere(Vec3::new(1., 0.5, 0.), 0.5, RED);

    my_gizmos
        .rounded_cuboid(Vec3::new(-2.0, 0.75, -0.75), Vec3::splat(0.9), TURQUOISE)
        .edge_radius(0.1)
        .arc_resolution(4);

    for y in [0., 0.5, 1.] {
        gizmos.ray(
            Vec3::new(1., y, 0.),
            Vec3::new(-3., ops::sin(time.elapsed_secs() * 3.), 0.),
            BLUE,
        );
    }

    my_gizmos
        .arc_3d(
            180.0_f32.to_radians(),
            0.2,
            Isometry3d::new(
                Vec3::ONE,
                Quat::from_rotation_arc(Vec3::Y, Vec3::ONE.normalize()),
            ),
            ORANGE,
        )
        .resolution(10);

    // Circles have 32 line-segments by default.
    my_gizmos.circle(Quat::from_rotation_arc(Vec3::Z, Vec3::Y), 3., BLACK);

    // You may want to increase this for larger circles or spheres.
    my_gizmos
        .circle(Quat::from_rotation_arc(Vec3::Z, Vec3::Y), 3.1, NAVY)
        .resolution(64);
    my_gizmos
        .sphere(Isometry3d::IDENTITY, 3.2, BLACK)
        .resolution(64);

    gizmos.arrow(Vec3::ZERO, Vec3::splat(1.5), YELLOW);

    // You can create more complex arrows using the arrow builder.
    gizmos
        .arrow(Vec3::new(2., 0., 2.), Vec3::new(2., 2., 2.), ORANGE_RED)
        .with_double_end()
        .with_tip_length(0.5);

    let from = Vec3::new(1.0, 2.0, 3.0);
    let to = Vec3::new(3.0, 2.5, 4.0);
    gizmos.rect(from, Vec2::ONE, RED);
    my_gizmos.short_arc_3d_between((from + to) / 2.0, from, to, YELLOW_GREEN);
    gizmos.rect(to, Vec2::ONE, RED);
}

Trait Implementations

impl<T, F> Clone for FunctionCurve<T, F>

where T: Clone, F: Clone,

fn clone(&self) -> FunctionCurve<T, F>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T, F> Curve<T> for FunctionCurve<T, F>

where F: Fn(f32) -> T,

fn domain(&self) -> Interval

The interval over which this curve is parametrized.

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.

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.

impl<T, F> Debug for FunctionCurve<T, F>

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

Formats the value using the given formatter.

impl<'de, T, F> Deserialize<'de> for FunctionCurve<T, F>

where F: Deserialize<'de>,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T, F> FromArg for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

type This<'from_arg> = FunctionCurve<T, F>

The type to convert into.

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

Creates an item from an argument.

impl<T, F> GetOwnership for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

fn ownership() -> Ownership

Returns the ownership of Self.

impl<T, F> GetTypeRegistration for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

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, F> IntoReturn for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

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

where FunctionCurve<T, F>: 'into_return,

Converts Self into a Return value.

impl<T, F> PartialReflect for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

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<FunctionCurve<T, F>>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn try_into_reflect( self: Box<FunctionCurve<T, F>>, ) -> 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<FunctionCurve<T, F>>, ) -> 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_partial_cmp( &self, value: &(dyn PartialReflect + 'static), ) -> Option<Ordering>

Returns a “partial 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) -> Result<Box<dyn PartialReflect>, ReflectCloneError>

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, F> Reflect for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

fn into_any(self: Box<FunctionCurve<T, F>>) -> 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<FunctionCurve<T, F>>) -> 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, F> Serialize for FunctionCurve<T, F>

where F: 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, F> Struct for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

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

Gets 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)>

Gets 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)>

Gets 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)>

Gets 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>

Gets the name of the field with index index.

fn index_of_name(&self, name: &str) -> Option<usize>

Gets the index of the field with the given name.

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) -> Result<DynamicStruct, ReflectCloneError>

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, F> TypePath for FunctionCurve<T, F>

where T: TypePath, F: 'static,

Available on crate feature bevy_reflect only.

Note: This is not a fully stable implementation of TypePath due to usage of type_name for function members.

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, F> Typed for FunctionCurve<T, F>

where FunctionCurve<T, F>: Any + Send + Sync, T: TypePath,

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.