Struct bevy::math::primitives::Arc2d

pub struct Arc2d {
    pub radius: f32,
    pub half_angle: f32,
}
Expand description

A primitive representing an arc between two points on a circle.

An arc has no area. If you want to include the portion of a circle’s area swept out by the arc, use the pie-shaped CircularSector. If you want to include only the space inside the convex hull of the arc, use the bowl-shaped CircularSegment.

The arc is drawn starting from Vec2::Y, extending by half_angle radians on either side. The center of the circle is the origin Vec2::ZERO. Note that this means that the origin may not be within the Arc2d’s convex hull.

Warning: Arcs with negative angle or radius, or with angle greater than an entire circle, are not officially supported. It is recommended to normalize arcs to have an angle in [0, 2π].

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§radius: f32

The radius of the circle

§half_angle: f32

Half the angle defining the arc

Implementations§

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impl Arc2d

pub fn new(radius: f32, half_angle: f32) -> Arc2d

Create a new Arc2d from a radius and a half_angle

pub fn from_radians(radius: f32, angle: f32) -> Arc2d

Create a new Arc2d from a radius and an angle in radians

pub fn from_degrees(radius: f32, angle: f32) -> Arc2d

Create a new Arc2d from a radius and an angle in degrees.

pub fn from_turns(radius: f32, fraction: f32) -> Arc2d

Create a new Arc2d from a radius and a fraction of a single turn.

For instance, 0.5 turns is a semicircle.

pub fn angle(&self) -> f32

Get the angle of the arc

pub fn length(&self) -> f32

Get the length of the arc

pub fn right_endpoint(&self) -> Vec2

Get the right-hand end point of the arc

pub fn left_endpoint(&self) -> Vec2

Get the left-hand end point of the arc

pub fn endpoints(&self) -> [Vec2; 2]

Get the endpoints of the arc

pub fn midpoint(&self) -> Vec2

Get the midpoint of the arc

pub fn half_chord_length(&self) -> f32

Get half the distance between the endpoints (half the length of the chord)

pub fn chord_length(&self) -> f32

Get the distance between the endpoints (the length of the chord)

pub fn chord_midpoint(&self) -> Vec2

Get the midpoint of the two endpoints (the midpoint of the chord)

pub fn apothem(&self) -> f32

Get the length of the apothem of this arc, that is, the distance from the center of the circle to the midpoint of the chord, in the direction of the midpoint of the arc. Equivalently, the radius minus the sagitta.

Note that for a major arc, the apothem will be negative.

pub fn sagitta(&self) -> f32

Get the length of the sagitta of this arc, that is, the length of the line between the midpoints of the arc and its chord. Equivalently, the height of the triangle whose base is the chord and whose apex is the midpoint of the arc.

The sagitta is also the sum of the radius and the apothem.

pub fn is_minor(&self) -> bool

Produces true if the arc is at most half a circle.

Note: This is not the negation of is_major: an exact semicircle is both major and minor.

pub fn is_major(&self) -> bool

Produces true if the arc is at least half a circle.

Note: This is not the negation of is_minor: an exact semicircle is both major and minor.

Trait Implementations§

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impl Bounded2d for Arc2d

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fn aabb_2d(&self, translation: Vec2, rotation: impl Into<Rot2>) -> Aabb2d

Get an axis-aligned bounding box for the shape with the given translation and rotation. The rotation is in radians, counterclockwise, with 0 meaning no rotation.
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fn bounding_circle( &self, translation: Vec2, rotation: impl Into<Rot2>, ) -> BoundingCircle

Get a bounding circle for the shape The rotation is in radians, counterclockwise, with 0 meaning no rotation.
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impl Clone for Arc2d

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fn clone(&self) -> Arc2d

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 Arc2d

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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 Default for Arc2d

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fn default() -> Arc2d

Returns the default Arc2d with radius 0.5, covering one third of a circle

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impl<'de> Deserialize<'de> for Arc2d

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fn deserialize<__D>( __deserializer: __D, ) -> Result<Arc2d, <__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<Arc2d> for CircularSector

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fn from(arc: Arc2d) -> CircularSector

Converts to this type from the input type.
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impl From<Arc2d> for CircularSegment

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fn from(arc: Arc2d) -> CircularSegment

Converts to this type from the input type.
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impl FromReflect for Arc2d
where Arc2d: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection,

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fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<Arc2d>

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 GetTypeRegistration for Arc2d
where Arc2d: Any + Send + Sync, f32: 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> GizmoPrimitive2d<Arc2d> 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_2d. This is a builder to set non-default values.
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fn primitive_2d( &mut self, primitive: &Arc2d, position: Vec2, angle: f32, color: impl Into<Color>, ) -> <Gizmos<'w, 's, Config, Clear> as GizmoPrimitive2d<Arc2d>>::Output<'_>

Renders a 2D primitive with its associated details.
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impl PartialEq for Arc2d

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fn eq(&self, other: &Arc2d) -> 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 Arc2d
where Arc2d: Any + Send + Sync, f32: 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<Arc2d>) -> 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<Arc2d>) -> 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<Arc2d>) -> 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 Arc2d

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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 Struct for Arc2d
where Arc2d: Any + Send + Sync, f32: FromReflect + TypePath + RegisterForReflection,

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

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

Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.
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fn field_at(&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_at_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 name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.
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fn field_len(&self) -> usize

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

Returns an iterator over the values of the reflectable fields for this struct.
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fn clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.
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impl TypePath for Arc2d
where Arc2d: 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 Arc2d
where Arc2d: Any + Send + Sync, f32: 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 Arc2d

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impl Primitive2d for Arc2d

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impl StructuralPartialEq for Arc2d

Auto Trait Implementations§

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impl Freeze for Arc2d

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impl RefUnwindSafe for Arc2d

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impl Send for Arc2d

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impl Sync for Arc2d

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impl Unpin for Arc2d

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impl UnwindSafe for Arc2d

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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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where U: ShaderType, &'a T: for<'a> Into<U>,

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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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where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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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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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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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 + Send + Sync>

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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where T: TypePath,

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Creates Self using data from the given World.
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Returns a reference to the value of the field named name, downcast to T.
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Returns a reference to the value specified by path. Read more
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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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