Struct bevy::math::prelude::Dir3

pub struct Dir3(/* private fields */);
Expand description

A normalized vector pointing in a direction in 3D space

Implementations§

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impl Dir3

pub const X: Dir3 = _

A unit vector pointing along the positive X axis.

pub const Y: Dir3 = _

A unit vector pointing along the positive Y axis.

pub const Z: Dir3 = _

A unit vector pointing along the positive Z axis.

pub const NEG_X: Dir3 = _

A unit vector pointing along the negative X axis.

pub const NEG_Y: Dir3 = _

A unit vector pointing along the negative Y axis.

pub const NEG_Z: Dir3 = _

A unit vector pointing along the negative Z axis.

pub const AXES: [Dir3; 3] = _

The directional axes.

pub fn new(value: Vec3) -> Result<Dir3, InvalidDirectionError>

Create a direction from a finite, nonzero Vec3, normalizing it.

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

Examples found in repository?
examples/math/smooth_follow.rs (line 107)
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fn move_target(
    mut target: Query<&mut Transform, With<TargetSphere>>,
    target_speed: Res<TargetSphereSpeed>,
    mut target_pos: ResMut<TargetPosition>,
    time: Res<Time>,
    mut rng: ResMut<RandomSource>,
) {
    let mut target = target.single_mut();

    match Dir3::new(target_pos.0 - target.translation) {
        // The target and the present position of the target sphere are far enough to have a well-
        // defined direction between them, so let's move closer:
        Ok(dir) => {
            let delta_time = time.delta_seconds();
            let abs_delta = (target_pos.0 - target.translation).norm();

            // Avoid overshooting in case of high values of `delta_time`:
            let magnitude = f32::min(abs_delta, delta_time * target_speed.0);
            target.translation += dir * magnitude;
        }

        // The two are really close, so let's generate a new target position:
        Err(_) => {
            let legal_region = Cuboid::from_size(Vec3::splat(4.0));
            *target_pos = TargetPosition(legal_region.sample_interior(&mut rng.0));
        }
    }
}

pub fn new_unchecked(value: Vec3) -> Dir3

Create a Dir3 from a Vec3 that is already normalized.

§Warning

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

pub fn new_and_length(value: Vec3) -> Result<(Dir3, f32), InvalidDirectionError>

Create a direction from a finite, nonzero Vec3, 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_xyz(x: f32, y: f32, z: f32) -> Result<Dir3, InvalidDirectionError>

Create a direction from its x, y, and z 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_vec3(&self) -> Vec3

Returns the inner Vec3

Examples found in repository?
examples/3d/ssr.rs (line 335)
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fn move_camera(
    keyboard_input: Res<ButtonInput<KeyCode>>,
    mut mouse_wheel_input: EventReader<MouseWheel>,
    mut cameras: Query<&mut Transform, With<Camera>>,
) {
    let (mut distance_delta, mut theta_delta) = (0.0, 0.0);

    // Handle keyboard events.
    if keyboard_input.pressed(KeyCode::KeyW) {
        distance_delta -= CAMERA_KEYBOARD_ZOOM_SPEED;
    }
    if keyboard_input.pressed(KeyCode::KeyS) {
        distance_delta += CAMERA_KEYBOARD_ZOOM_SPEED;
    }
    if keyboard_input.pressed(KeyCode::KeyA) {
        theta_delta += CAMERA_KEYBOARD_ORBIT_SPEED;
    }
    if keyboard_input.pressed(KeyCode::KeyD) {
        theta_delta -= CAMERA_KEYBOARD_ORBIT_SPEED;
    }

    // Handle mouse events.
    for mouse_wheel_event in mouse_wheel_input.read() {
        distance_delta -= mouse_wheel_event.y * CAMERA_MOUSE_WHEEL_ZOOM_SPEED;
    }

    // Update transforms.
    for mut camera_transform in cameras.iter_mut() {
        let local_z = camera_transform.local_z().as_vec3().normalize_or_zero();
        if distance_delta != 0.0 {
            camera_transform.translation = (camera_transform.translation.length() + distance_delta)
                .clamp(CAMERA_ZOOM_RANGE.start, CAMERA_ZOOM_RANGE.end)
                * local_z;
        }
        if theta_delta != 0.0 {
            camera_transform
                .translate_around(Vec3::ZERO, Quat::from_axis_angle(Vec3::Y, theta_delta));
            camera_transform.look_at(Vec3::ZERO, Vec3::Y);
        }
    }
}

pub fn slerp(self, rhs: Dir3, s: f32) -> Dir3

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 = Dir3::X;
let dir2 = Dir3::Y;

let result1 = dir1.slerp(dir2, 1.0 / 3.0);
assert_relative_eq!(
    result1,
    Dir3::from_xyz(0.75_f32.sqrt(), 0.5, 0.0).unwrap(),
    epsilon = 0.000001
);

let result2 = dir1.slerp(dir2, 0.5);
assert_relative_eq!(result2, Dir3::from_xyz(0.5_f32.sqrt(), 0.5_f32.sqrt(), 0.0).unwrap());

Methods from Deref<Target = Vec3>§

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pub const ZERO: Vec3 = _

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pub const ONE: Vec3 = _

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pub const NEG_ONE: Vec3 = _

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pub const MIN: Vec3 = _

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pub const MAX: Vec3 = _

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pub const NAN: Vec3 = _

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pub const INFINITY: Vec3 = _

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pub const NEG_INFINITY: Vec3 = _

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pub const X: Vec3 = _

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pub const Y: Vec3 = _

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pub const Z: Vec3 = _

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pub const NEG_X: Vec3 = _

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pub const NEG_Y: Vec3 = _

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pub const NEG_Z: Vec3 = _

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pub const AXES: [Vec3; 3] = _

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pub fn to_array(&self) -> [f32; 3]

[x, y, z]

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pub fn move_towards(&self, rhs: Vec3, d: f32) -> Vec3

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.

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pub fn any_orthogonal_vector(&self) -> Vec3

Returns some vector that is orthogonal to the given one.

The input vector must be finite and non-zero.

The output vector is not necessarily unit length. For that use Self::any_orthonormal_vector() instead.

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pub fn any_orthonormal_vector(&self) -> Vec3

Returns any unit vector that is orthogonal to the given one.

The input vector must be unit length.

§Panics

Will panic if self is not normalized when glam_assert is enabled.

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pub fn any_orthonormal_pair(&self) -> (Vec3, Vec3)

Given a unit vector return two other vectors that together form an orthonormal basis. That is, all three vectors are orthogonal to each other and are normalized.

§Panics

Will panic if self is not normalized when glam_assert is enabled.

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pub fn as_dvec3(&self) -> DVec3

Casts all elements of self to f64.

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pub fn as_i16vec3(&self) -> I16Vec3

Casts all elements of self to i16.

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pub fn as_u16vec3(&self) -> U16Vec3

Casts all elements of self to u16.

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pub fn as_ivec3(&self) -> IVec3

Casts all elements of self to i32.

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pub fn as_uvec3(&self) -> UVec3

Casts all elements of self to u32.

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pub fn as_i64vec3(&self) -> I64Vec3

Casts all elements of self to i64.

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pub fn as_u64vec3(&self) -> U64Vec3

Casts all elements of self to u64.

Trait Implementations§

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impl Clone for Dir3

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fn clone(&self) -> Dir3

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Dir3

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

Formats the value using the given formatter. Read more
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impl Deref for Dir3

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type Target = Vec3

The resulting type after dereferencing.
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fn deref(&self) -> &<Dir3 as Deref>::Target

Dereferences the value.
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impl<'de> Deserialize<'de> for Dir3

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fn deserialize<__D>( __deserializer: __D, ) -> Result<Dir3, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl From<Dir3> for Dir3A

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fn from(value: Dir3) -> Dir3A

Converts to this type from the input type.
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impl From<Dir3> for Vec3

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fn from(value: Dir3) -> Vec3

Converts to this type from the input type.
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impl From<Dir3A> for Dir3

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fn from(value: Dir3A) -> Dir3

Converts to this type from the input type.
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impl FromReflect for Dir3
where Dir3: Any + Send + Sync, Vec3: FromReflect + TypePath + RegisterForReflection,

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fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<Dir3>

Constructs a concrete instance of Self from a reflected value.
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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. Read more
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impl FromRng for Dir3

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

Construct a value of this type uniformly at random using rng as the source of randomness.
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impl GetTypeRegistration for Dir3
where Dir3: Any + Send + Sync, Vec3: FromReflect + TypePath + RegisterForReflection,

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fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.
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fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type. Read more
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impl<'w, 's, Config, Clear> GizmoPrimitive3d<Dir3> for Gizmos<'w, 's, Config, Clear>
where Config: GizmoConfigGroup, Clear: 'static + Send + Sync,

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type Output<'a> = () where Gizmos<'w, 's, Config, Clear>: 'a

The output of primitive_3d. This is a builder to set non-default values.
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fn primitive_3d( &mut self, primitive: &Dir3, position: Vec3, rotation: Quat, color: impl Into<Color>, ) -> <Gizmos<'w, 's, Config, Clear> as GizmoPrimitive3d<Dir3>>::Output<'_>

Renders a 3D primitive with its associated details.
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impl Mul<Dir3> for Quat

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fn mul(self, direction: Dir3) -> <Quat as Mul<Dir3>>::Output

Rotates the Dir3 using a Quat.

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type Output = Dir3

The resulting type after applying the * operator.
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impl Mul<Dir3> for f32

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type Output = Vec3

The resulting type after applying the * operator.
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fn mul(self, rhs: Dir3) -> <f32 as Mul<Dir3>>::Output

Performs the * operation. Read more
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impl Mul<f32> for Dir3

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type Output = Vec3

The resulting type after applying the * operator.
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fn mul(self, rhs: f32) -> <Dir3 as Mul<f32>>::Output

Performs the * operation. Read more
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impl Neg for Dir3

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type Output = Dir3

The resulting type after applying the - operator.
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fn neg(self) -> <Dir3 as Neg>::Output

Performs the unary - operation. Read more
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impl PartialEq for Dir3

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fn eq(&self, other: &Dir3) -> bool

This method tests for self and other values to be equal, and is used by ==.
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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.
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impl Reflect for Dir3
where Dir3: Any + Send + Sync, Vec3: FromReflect + TypePath + RegisterForReflection,

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

Returns the TypeInfo of the type represented by this value. Read more
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fn into_any(self: Box<Dir3>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.
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fn into_reflect(self: Box<Dir3>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
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fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.
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fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
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fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
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fn try_apply( &mut self, value: &(dyn Reflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
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fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<Dir3>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value. Read more
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fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
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fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type). Read more
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fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl Serialize for Dir3

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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. Read more
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impl StableInterpolate for Dir3

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fn interpolate_stable(&self, other: &Dir3, t: f32) -> Dir3

Interpolate between this value and the other given value using the parameter t. At t = 0.0, a value equivalent to self is recovered, while t = 1.0 recovers a value equivalent to other, with intermediate values interpolating between the two. See the trait-level documentation for details.
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fn interpolate_stable_assign(&mut self, other: &Self, t: f32)

A version of interpolate_stable that assigns the result to self for convenience.
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fn smooth_nudge(&mut self, target: &Self, decay_rate: f32, delta: f32)

Smoothly nudge this value towards the target at a given decay rate. The decay_rate parameter controls how fast the distance between self and target decays relative to the units of delta; the intended usage is for decay_rate to generally remain fixed, while delta is something like delta_time from an updating system. This produces a smooth following of the target that is independent of framerate. Read more
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impl TryFrom<Vec3> for Dir3

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type Error = InvalidDirectionError

The type returned in the event of a conversion error.
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fn try_from(value: Vec3) -> Result<Dir3, <Dir3 as TryFrom<Vec3>>::Error>

Performs the conversion.
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impl TupleStruct for Dir3
where Dir3: Any + Send + Sync, Vec3: FromReflect + TypePath + RegisterForReflection,

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

Returns a reference to the value of the field with index index as a &dyn Reflect.
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fn field_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.
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fn field_len(&self) -> usize

Returns the number of fields in the tuple struct.
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fn iter_fields(&self) -> TupleStructFieldIter<'_>

Returns an iterator over the values of the tuple struct’s fields.
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fn clone_dynamic(&self) -> DynamicTupleStruct

Clones the struct into a DynamicTupleStruct.
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impl TypePath for Dir3
where Dir3: Any + Send + Sync,

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fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
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fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
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fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous. Read more
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fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
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impl Typed for Dir3
where Dir3: Any + Send + Sync, Vec3: FromReflect + TypePath + RegisterForReflection,

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fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.
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impl Copy for Dir3

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impl Primitive3d for Dir3

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impl StructuralPartialEq for Dir3

Auto Trait Implementations§

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impl Freeze for Dir3

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impl RefUnwindSafe for Dir3

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impl Send for Dir3

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impl Sync for Dir3

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impl Unpin for Dir3

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impl UnwindSafe for Dir3

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, U> AsBindGroupShaderType<U> for T
where U: ShaderType, &'a T: for<'a> Into<U>,

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fn as_bind_group_shader_type(&self, _images: &RenderAssets<GpuImage>) -> U

Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> Downcast for T
where T: Any,

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

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> DynamicTypePath for T
where T: TypePath,

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fn from(t: T) -> T

Returns the argument unchanged.

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fn from_sample_(s: S) -> S

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impl<T> GetPath for T
where T: Reflect + ?Sized,

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fn reflect_path<'p>( &self, path: impl ReflectPath<'p>, ) -> Result<&(dyn Reflect + 'static), ReflectPathError<'p>>

Returns a reference to the value specified by path. Read more
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Returns a mutable reference to the value specified by path. Read more
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where T: Reflect,

Returns a statically typed reference to the value specified by path. Read more
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where T: Reflect,

Returns a statically typed mutable reference to the value specified by path. Read more
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fn get_field<T>(&self, index: usize) -> Option<&T>
where T: Reflect,

Returns a reference to the value of the field with index index, downcast to T.
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where T: Reflect,

Returns a mutable reference to the value of the field with index index, downcast to T.
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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn into(self) -> U

Calls U::from(self).

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ConditionalSend for T
where T: Send,

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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

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impl<T> Settings for T
where T: 'static + Send + Sync,

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impl<T> WasmNotSend for T
where T: Send,

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impl<T> WasmNotSendSync for T
where T: WasmNotSend + WasmNotSync,

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impl<T> WasmNotSync for T
where T: Sync,