Struct DistanceJoint

pub struct DistanceJoint {
    pub body1: Entity,
    pub body2: Entity,
    pub anchor1: JointAnchor,
    pub anchor2: JointAnchor,
    pub limits: DistanceLimit,
    pub compliance: Scalar,
}

A distance joint maintains an upper and/or lower bound on the distance between anchor points on two bodies.

This can be useful for things like springs, muscles, and mass-spring networks.

A distance joint is defined by a JointAnchor on each body, and a DistanceLimit. The joint aims to keep the distance between the two anchor points within the specified limits.

Fields

body1: Entity

The first body constrained by the joint.

body2: Entity

The second body constrained by the joint.

anchor1: JointAnchor

The joint anchor point on the first body.

anchor2: JointAnchor

The joint anchor point on the second body.

limits: DistanceLimit

The extents of the allowed relative translation between the attached bodies.

compliance: Scalar

The joint’s compliance, the inverse of stiffness (m / N).

Implementations

impl DistanceJoint

pub const fn new(body1: Entity, body2: Entity) -> Self

Creates a new DistanceJoint between two entities.

pub const fn with_anchor(self, anchor: Vector) -> Self

Sets the global anchor point on both bodies.

This configures the JointAnchor of each JointFrame.

pub const fn with_local_anchor1(self, anchor: Vector) -> Self

Sets the local anchor point on the first body.

This configures the JointAnchor of the first JointFrame.

pub const fn with_local_anchor2(self, anchor: Vector) -> Self

Sets the local anchor point on the second body.

This configures the JointAnchor of the second JointFrame.

pub const fn local_anchor1(&self) -> Option<Vector>

Returns the local anchor point on the first body.

If the JointAnchor is set to FromGlobal, and the local anchor has not yet been computed, this will return None.

pub const fn local_anchor2(&self) -> Option<Vector>

Returns the local anchor point on the second body.

If the JointAnchor is set to FromGlobal, and the local anchor has not yet been computed, this will return None.

pub const fn with_rest_length(self, rest_length: Scalar) -> Self

👎Deprecated since 0.4.0: Use with_limits instead.

Sets the joint’s rest length, or distance the bodies will be kept at.

pub const fn with_limits(self, min: Scalar, max: Scalar) -> Self

Sets the minimum and maximum distance between the anchor points of the bodies.

min and max should be non-negative, and min should be less than or equal to max.

pub const fn with_min_distance(self, min: Scalar) -> Self

Sets the minimum distance between the anchor points of the bodies.

If min is larger than the current maximum distance, the maximum distance will be set to min.

pub const fn with_max_distance(self, max: Scalar) -> Self

Sets the maximum distance between the anchor points of the bodies.

If max is smaller than the current minimum distance, the minimum distance will be set to max.

pub const fn with_compliance(self, compliance: Scalar) -> Self

Sets the joint’s compliance (inverse of stiffness, m / N).

Trait Implementations

impl Clone for DistanceJoint

fn clone(&self) -> DistanceJoint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for DistanceJoint

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = ::bevy::ecs::component::StorageType::Table

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have [Component<Mutability = Mutable>], while immutable components will instead have [Component<Mutability = Immutable>].

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add ComponentHook for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert ComponentHook for this Component if one is defined.

fn on_replace() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_replace ComponentHook for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove ComponentHook for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn ComponentHook for this Component if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities]

impl Debug for DistanceJoint

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

Formats the value using the given formatter.

impl DebugRenderConstraint<2> for DistanceJoint

type Context = ()

A SystemParam type for any additional ECS access required for rendering the constraint.

fn debug_render( &self, positions: [Vector; 2], rotations: [Rotation; 2], _context: &mut Self::Context, gizmos: &mut Gizmos<'_, '_, PhysicsGizmos>, config: &PhysicsGizmos, )

Renders the debug information for the constraint.

impl EntityConstraint<2> for DistanceJoint

fn entities(&self) -> [Entity; 2]

The entities participating in the constraint.

impl FromReflect for DistanceJoint

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

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 GetTypeRegistration for DistanceJoint

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 MapEntities for DistanceJoint

fn map_entities<M: EntityMapper>(&mut self, entity_mapper: &mut M)

Updates all Entity references stored inside using entity_mapper.

impl PartialEq for DistanceJoint

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialReflect for DistanceJoint

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) -> 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 try_into_reflect( self: Box<Self>, ) -> 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>

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

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

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

fn into_partial_reflect(self: Box<Self>) -> Box<dyn PartialReflect>

Casts this type to a boxed, reflected value.

fn as_partial_reflect(&self) -> &dyn PartialReflect

Casts this type to a reflected value.

fn as_partial_reflect_mut(&mut self) -> &mut dyn PartialReflect

Casts this type to a mutable, reflected value.

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

Returns a “partial equality” comparison result.

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

Debug formatter for the value.

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 is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Reflect for DistanceJoint

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, fully-reflected value.

fn as_reflect(&self) -> &dyn Reflect

Casts this type to a fully-reflected value.

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

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 Struct for DistanceJoint

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

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>

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>

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>

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 TypePath for DistanceJoint

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 DistanceJoint

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl StructuralPartialEq for DistanceJoint