Struct bevy_math::Dir2

pub struct Dir2(/* private fields */);

A normalized vector pointing in a direction in 2D space

Implementations

impl Dir2

pub const X: Self = _

A unit vector pointing along the positive X axis.

pub const Y: Self = _

A unit vector pointing along the positive Y axis.

pub const NEG_X: Self = _

A unit vector pointing along the negative X axis.

pub const NEG_Y: Self = _

A unit vector pointing along the negative Y axis.

pub const AXES: [Self; 2] = _

The directional axes.

pub const NORTH: Self = _

The “north” direction, equivalent to Dir2::Y.

pub const SOUTH: Self = _

The “south” direction, equivalent to Dir2::NEG_Y.

pub const EAST: Self = _

The “east” direction, equivalent to Dir2::X.

pub const WEST: Self = _

The “west” direction, equivalent to Dir2::NEG_X.

pub const NORTH_EAST: Self = _

The “north-east” direction, between Dir2::NORTH and Dir2::EAST.

pub const NORTH_WEST: Self = _

The “north-west” direction, between Dir2::NORTH and Dir2::WEST.

pub const SOUTH_EAST: Self = _

The “south-east” direction, between Dir2::SOUTH and Dir2::EAST.

pub const SOUTH_WEST: Self = _

The “south-west” direction, between Dir2::SOUTH and Dir2::WEST.

pub fn new(value: Vec2) -> Result<Self, InvalidDirectionError>

Create a direction from a finite, nonzero Vec2, normalizing it.

Returns Err(InvalidDirectionError) if the length of the given vector is zero (or very close to zero), infinite, or NaN.

pub fn new_unchecked(value: Vec2) -> Self

Create a Dir2 from a Vec2 that is already normalized.

Warning

value must be normalized, i.e its length must be 1.0.

pub fn new_and_length(value: Vec2) -> Result<(Self, f32), InvalidDirectionError>

Create a direction from a finite, nonzero Vec2, normalizing it and also returning its original length.

Returns Err(InvalidDirectionError) if the length of the given vector is zero (or very close to zero), infinite, or NaN.

pub fn from_xy(x: f32, y: f32) -> Result<Self, InvalidDirectionError>

Create a direction from its x and y components.

Returns Err(InvalidDirectionError) if the length of the vector formed by the components is zero (or very close to zero), infinite, or NaN.

pub const fn as_vec2(&self) -> Vec2

Returns the inner Vec2

pub fn slerp(self, rhs: Self, s: f32) -> Self

Performs a spherical linear interpolation between self and rhs based on the value s.

This corresponds to interpolating between the two directions at a constant angular velocity.

When s == 0.0, the result will be equal to self. When s == 1.0, the result will be equal to rhs.

Example

let dir1 = Dir2::X;
let dir2 = Dir2::Y;

let result1 = dir1.slerp(dir2, 1.0 / 3.0);
assert_relative_eq!(result1, Dir2::from_xy(0.75_f32.sqrt(), 0.5).unwrap());

let result2 = dir1.slerp(dir2, 0.5);
assert_relative_eq!(result2, Dir2::from_xy(0.5_f32.sqrt(), 0.5_f32.sqrt()).unwrap());

pub fn rotation_to(self, other: Self) -> Rot2

Get the rotation that rotates this direction to other.

pub fn rotation_from(self, other: Self) -> Rot2

Get the rotation that rotates other to this direction.

pub fn rotation_from_x(self) -> Rot2

Get the rotation that rotates the X-axis to this direction.

pub fn rotation_to_x(self) -> Rot2

Get the rotation that rotates this direction to the X-axis.

pub fn rotation_from_y(self) -> Rot2

Get the rotation that rotates this direction to the Y-axis.

pub fn rotation_to_y(self) -> Rot2

Get the rotation that rotates the Y-axis to this direction.

Methods from Deref<Target = Vec2>

pub const ZERO: Vec2 = _

pub const ONE: Vec2 = _

pub const NEG_ONE: Vec2 = _

pub const MIN: Vec2 = _

pub const MAX: Vec2 = _

pub const NAN: Vec2 = _

pub const INFINITY: Vec2 = _

pub const NEG_INFINITY: Vec2 = _

pub const X: Vec2 = _

pub const Y: Vec2 = _

pub const NEG_X: Vec2 = _

pub const NEG_Y: Vec2 = _

pub const AXES: [Vec2; 2] = _

pub fn to_array(&self) -> [f32; 2]

[x, y]

pub fn move_towards(&self, rhs: Vec2, d: f32) -> Vec2

Moves towards rhs based on the value d.

When d is 0.0, the result will be equal to self. When d is equal to self.distance(rhs), the result will be equal to rhs. Will not go past rhs.

pub fn as_dvec2(&self) -> DVec2

Casts all elements of self to f64.

pub fn as_i16vec2(&self) -> I16Vec2

Casts all elements of self to i16.

pub fn as_u16vec2(&self) -> U16Vec2

Casts all elements of self to u16.

pub fn as_ivec2(&self) -> IVec2

Casts all elements of self to i32.

pub fn as_uvec2(&self) -> UVec2

Casts all elements of self to u32.

pub fn as_i64vec2(&self) -> I64Vec2

Casts all elements of self to i64.

pub fn as_u64vec2(&self) -> U64Vec2

Casts all elements of self to u64.

Trait Implementations

impl Clone for Dir2

fn clone(&self) -> Dir2

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Dir2

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

Formats the value using the given formatter.

impl Deref for Dir2

type Target = Vec2

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'de> Deserialize<'de> for Dir2

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Distribution<Dir2> for Standard

Available on crate feature rand only.

fn sample<R: Rng + ?Sized>(&self, rng: &mut R) -> Dir2

Generate a random value of T, using rng as the source of randomness.

fn sample_iter<R>(self, rng: R) -> DistIter<Self, R, T>

where R: Rng, Self: Sized,

Create an iterator that generates random values of T, using rng as the source of randomness.

fn map<F, S>(self, func: F) -> DistMap<Self, F, T, S>

where F: Fn(T) -> S, Self: Sized,

Create a distribution of values of ‘S’ by mapping the output of Self through the closure F

impl From<CompassOctant> for Dir2

fn from(o: CompassOctant) -> Self

Converts to this type from the input type.

impl From<CompassQuadrant> for Dir2

fn from(q: CompassQuadrant) -> Self

Converts to this type from the input type.

impl From<Dir2> for CompassOctant

fn from(dir: Dir2) -> Self

Converts a Dir2 to a CompassOctant in a lossy manner. Converting back to a Dir2 is not guaranteed to yield the same value.

impl From<Dir2> for CompassQuadrant

fn from(dir: Dir2) -> Self

Converts a Dir2 to a CompassQuadrant in a lossy manner. Converting back to a Dir2 is not guaranteed to yield the same value.

impl From<Dir2> for Vec2

fn from(value: Dir2) -> Self

Converts to this type from the input type.

impl FromReflect for Dir2

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

fn from_reflect(reflect: &dyn Reflect) -> Option<Self>

Constructs a concrete instance of Self from a reflected value.

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

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

impl FromRng for Dir2

Available on crate feature rand only.

fn from_rng<R: Rng + ?Sized>(rng: &mut R) -> Self

Construct a value of this type uniformly at random using rng as the source of randomness.

impl GetTypeRegistration for Dir2

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + 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 Mul<Dir2> for Rot2

fn mul(self, direction: Dir2) -> Self::Output

Rotates the Dir2 using a Rot2.

type Output = Dir2

The resulting type after applying the * operator.

impl Mul<Dir2> for f32

type Output = Vec2

The resulting type after applying the * operator.

fn mul(self, rhs: Dir2) -> Self::Output

Performs the * operation.

impl Mul<f32> for Dir2

type Output = Vec2

The resulting type after applying the * operator.

fn mul(self, rhs: f32) -> Self::Output

Performs the * operation.

impl Neg for Dir2

type Output = Dir2

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl PartialEq for Dir2

fn eq(&self, other: &Dir2) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl Reflect for Dir2

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

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

Returns the TypeInfo of the type represented by this value.

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

Returns the value as a Box<dyn Any>.

fn as_any(&self) -> &dyn Any

Returns the value as a &dyn Any.

fn as_any_mut(&mut self) -> &mut dyn Any

Returns the value as a &mut dyn Any.

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

Casts this type to a boxed reflected value.

fn as_reflect(&self) -> &dyn Reflect

Casts this type to a reflected value.

fn as_reflect_mut(&mut self) -> &mut dyn Reflect

Casts this type to a mutable reflected value.

fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object.

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

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

fn try_apply(&mut self, value: &dyn Reflect) -> 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<Self>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type.

fn reflect_partial_eq(&self, value: &dyn Reflect) -> Option<bool>

Returns a “partial equality” comparison result.

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

Debug formatter for the value.

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

Applies a reflected value to this value.

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

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

fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Serialize for Dir2

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<Vec2> for Dir2

type Error = InvalidDirectionError

The type returned in the event of a conversion error.

fn try_from(value: Vec2) -> Result<Self, Self::Error>

Performs the conversion.

impl TupleStruct for Dir2

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

fn field(&self, index: usize) -> Option<&dyn Reflect>

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

fn field_mut(&mut self, index: usize) -> Option<&mut dyn Reflect>

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

fn field_len(&self) -> usize

Returns the number of fields in the tuple struct.

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

Returns an iterator over the values of the tuple struct’s fields.

fn clone_dynamic(&self) -> DynamicTupleStruct

Clones the struct into a DynamicTupleStruct.

impl TypePath for Dir2

where Self: Any + Send + Sync,

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 Typed for Dir2

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl Copy for Dir2

impl Primitive2d for Dir2

impl StructuralPartialEq for Dir2