Struct bevy_math::primitives::Ellipse

pub struct Ellipse {
    pub half_size: Vec2,
}

An ellipse primitive

Fields

half_size: Vec2

Half of the width and height of the ellipse.

This corresponds to the two perpendicular radii defining the ellipse.

Implementations

impl Ellipse

pub const fn new(half_width: f32, half_height: f32) -> Self

Create a new Ellipse from half of its width and height.

This corresponds to the two perpendicular radii defining the ellipse.

pub fn from_size(size: Vec2) -> Self

Create a new Ellipse from a given full size.

size.x is the diameter along the X axis, and size.y is the diameter along the Y axis.

pub fn eccentricity(&self) -> f32

Returns the eccentricity of the ellipse. It can be thought of as a measure of how “stretched” or elongated the ellipse is.

The value should be in the range [0, 1), where 0 represents a circle, and 1 represents a parabola.

pub fn focal_length(&self) -> f32

Get the focal length of the ellipse. This corresponds to the distance between one of the foci and the center of the ellipse.

The focal length of an ellipse is related to its eccentricity by eccentricity = focal_length / semi_major

pub fn semi_major(&self) -> f32

Returns the length of the semi-major axis. This corresponds to the longest radius of the ellipse.

pub fn semi_minor(&self) -> f32

Returns the length of the semi-minor axis. This corresponds to the shortest radius of the ellipse.

Trait Implementations

impl Bounded2d for Ellipse

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.

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.

impl BoundedExtrusion for Ellipse

fn extrusion_aabb_3d( &self, half_depth: f32, translation: Vec3, rotation: Quat, ) -> Aabb3d

Get an axis-aligned bounding box for an extrusion with this shape as a base and the given half_depth, transformed by the given translation and rotation.

fn extrusion_bounding_sphere( &self, half_depth: f32, translation: Vec3, rotation: Quat, ) -> BoundingSphere

Get a bounding sphere for an extrusion of the base_shape with the given half_depth with the given translation and rotation

impl Clone for Ellipse

fn clone(&self) -> Ellipse

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Ellipse

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

Formats the value using the given formatter.

impl Default for Ellipse

fn default() -> Self

Returns the default Ellipse with a half-width of 1.0 and a half-height of 0.5.

impl<'de> Deserialize<'de> for Ellipse

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl FromReflect for Ellipse

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

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

Constructs a concrete instance of Self from a reflected value.

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.

impl GetTypeRegistration for Ellipse

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

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 Measured2d for Ellipse

fn area(&self) -> f32

Get the area of the ellipse

fn perimeter(&self) -> f32

Get an approximation for the perimeter or circumference of the ellipse.

The approximation is reasonably precise with a relative error less than 0.007%, getting more precise as the eccentricity of the ellipse decreases.

impl PartialEq for Ellipse

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

This method tests for self and other values to be equal, and is used by ==.

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.

impl Reflect for Ellipse

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

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

Returns the TypeInfo of the type represented by this value.

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 reflected value.

fn as_reflect(&self) -> &dyn Reflect

Casts this type to a reflected value.

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

Casts this type to a mutable reflected value.

fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object.

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value.

fn try_apply(&mut self, value: &dyn Reflect) -> 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 reflect_partial_eq(&self, value: &dyn Reflect) -> Option<bool>

Returns a “partial equality” comparison result.

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

Debug formatter for the value.

fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value.

fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type).

fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Serialize for Ellipse

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Struct for Ellipse

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

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

Returns a reference to the value of the field named name as a &dyn Reflect.

fn field_mut(&mut self, name: &str) -> Option<&mut dyn Reflect>

Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.

fn field_at(&self, index: usize) -> Option<&dyn Reflect>

Returns a reference to the value of the field with index index as a &dyn Reflect.

fn field_at_mut(&mut self, index: usize) -> Option<&mut dyn Reflect>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.

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 clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.

impl TypePath for Ellipse

where Self: Any + Send + Sync,

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 Ellipse

where Self: Any + Send + Sync, Vec2: FromReflect + TypePath + RegisterForReflection,

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl Copy for Ellipse

impl Primitive2d for Ellipse

impl StructuralPartialEq for Ellipse