Enum Joint

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pub enum Joint {
    Distance {
        id: JointId,
        body_a: BodyId,
        body_b: BodyId,
        anchor_a: Vec2,
        anchor_b: Vec2,
        rest_length: f32,
        stiffness: f32,
        damping: f32,
    },
    Revolute {
        id: JointId,
        body_a: BodyId,
        body_b: BodyId,
        anchor_a: Vec2,
        anchor_b: Vec2,
        lower_angle: Option<f32>,
        upper_angle: Option<f32>,
        motor_speed: Option<f32>,
        motor_torque: f32,
    },
    Prismatic {
        id: JointId,
        body_a: BodyId,
        body_b: BodyId,
        anchor_a: Vec2,
        anchor_b: Vec2,
        axis: Vec2,
        lower_limit: Option<f32>,
        upper_limit: Option<f32>,
    },
    Weld {
        id: JointId,
        body_a: BodyId,
        body_b: BodyId,
        anchor_a: Vec2,
        anchor_b: Vec2,
        ref_angle: f32,
    },
    Spring {
        id: JointId,
        body_a: BodyId,
        body_b: BodyId,
        anchor_a: Vec2,
        anchor_b: Vec2,
        rest_length: f32,
        frequency: f32,
        damping_ratio: f32,
    },
    Target {
        id: JointId,
        body: BodyId,
        anchor: Vec2,
        target: Vec2,
        max_force: f32,
        frequency: f32,
        damping_ratio: f32,
    },
}

Expand description

Joint connecting two bodies.

Variants§

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Distance

Maintains a fixed distance between two anchor points.

Fields

§id: JointId

§body_a: BodyId

§body_b: BodyId

§anchor_a: Vec2

§anchor_b: Vec2

§rest_length: f32

§stiffness: f32

§damping: f32

§

Revolute

Allows relative rotation only.

Fields

§id: JointId

§body_a: BodyId

§body_b: BodyId

§anchor_a: Vec2

§anchor_b: Vec2

§lower_angle: Option<f32>

§upper_angle: Option<f32>

§motor_speed: Option<f32>

§motor_torque: f32

§

Prismatic

Allows only linear motion along an axis.

Fields

§id: JointId

§body_a: BodyId

§body_b: BodyId

§anchor_a: Vec2

§anchor_b: Vec2

§axis: Vec2

§lower_limit: Option<f32>

§upper_limit: Option<f32>

§

Weld

Fully locks two bodies together.

Fields

§id: JointId

§body_a: BodyId

§body_b: BodyId

§anchor_a: Vec2

§anchor_b: Vec2

§ref_angle: f32

§

Spring

Spring joint (soft distance constraint).

Fields

§id: JointId

§body_a: BodyId

§body_b: BodyId

§anchor_a: Vec2

§anchor_b: Vec2

§rest_length: f32

§frequency: f32

§damping_ratio: f32

§

Target

Mouse/target joint — pull body toward a world point.

Fields

§id: JointId

§body: BodyId

§anchor: Vec2

§target: Vec2

§max_force: f32

§frequency: f32

§damping_ratio: f32

Implementations§

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impl Joint

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pub fn id(&self) -> JointId

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pub fn solve(&self, bodies: &mut HashMap<BodyId, RigidBody2D>, dt: f32)

Apply impulses to enforce this joint.

Trait Implementations§

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impl Clone for Joint

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fn clone(&self) -> Joint

Returns a duplicate 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 Joint

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl UnwindSafe for Joint

Blanket Implementations§

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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> 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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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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