Enum Constraint

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pub enum Constraint {
    Distance {
        body_a: BodyId,
        body_b: BodyId,
        rest_length: f32,
        stiffness: f32,
        damping: f32,
    },
    Spring {
        body_a: BodyId,
        body_b: BodyId,
        rest_len: f32,
        k: f32,
        c: f32,
    },
    Pin {
        body: BodyId,
        target: Vec2,
        stiffness: f32,
    },
    Boundary {
        body: BodyId,
        min: Vec2,
        max: Vec2,
    },
    AngleLimit {
        body: BodyId,
        min_angle: f32,
        max_angle: f32,
        stiffness: f32,
    },
}

Expand description

A physical constraint between two bodies.

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Distance

Maintain a fixed distance between two bodies.

Fields

§body_a: BodyId

§body_b: BodyId

§rest_length: f32

§stiffness: f32

§damping: f32

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Spring

Spring constraint (distance with Hooke’s law).

Fields

§body_a: BodyId

§body_b: BodyId

§rest_len: f32

§k: f32

§c: f32

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Pin

Pin one body to a world-space position.

Fields

§body: BodyId

§target: Vec2

§stiffness: f32

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Boundary

Keep body within an axis-aligned box.

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§body: BodyId

§min: Vec2

§max: Vec2

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AngleLimit

Angular constraint (limit rotation range).

Fields

§body: BodyId

§min_angle: f32

§max_angle: f32

§stiffness: f32

Implementations§

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impl Constraint

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pub fn apply(&self, bodies: &mut [RigidBody])

Apply the constraint by modifying body forces/velocities.

Trait Implementations§

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impl Clone for Constraint

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fn clone(&self) -> Constraint

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 Constraint

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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 Constraint

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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