Struct LinearRgba 

#[repr(C)]
pub struct LinearRgba {
    pub red: f32,
    pub green: f32,
    pub blue: f32,
    pub alpha: f32,
}

Linear RGB color with alpha.

SDR colors are in [0.0, 1.0]. Values above 1.0 are HDR intensities.

Conversion

Conversion between the various color spaces is achieved using Rust’s native From trait. Because certain color spaces are defined by their transformation to and from another space, these From implementations reflect that set of definitions.

let color = Srgba::rgb(0.5, 0.5, 0.5);

// Using From explicitly
let linear_color = LinearRgba::from(color);

// Using Into
let linear_color: LinearRgba = color.into();

For example, the sRGB space is defined by its relationship with Linear RGB, and HWB by its with sRGB. As such, it is the responsibility of sRGB to provide From implementations for Linear RGB, and HWB for sRGB. To then provide conversion between Linear RGB and HWB directly, HWB is responsible for implementing these conversions, delegating to sRGB as an intermediatory. This ensures that all conversions take the shortest path between any two spaces, and limit the proliferation of domain specific knowledge for each color space to their respective definitions.

Fields

red: f32

The red channel. [0.0, 1.0] for SDR colors.

green: f32

The green channel. [0.0, 1.0] for SDR colors.

blue: f32

The blue channel. [0.0, 1.0] for SDR colors.

alpha: f32

The alpha channel. [0.0, 1.0]

Implementations

impl LinearRgba

pub const BLACK: Self

A fully black color with full alpha.

pub const WHITE: Self

A fully white color with full alpha.

pub const NONE: Self

A fully transparent color.

pub const RED: Self

A fully red color with full alpha.

pub const GREEN: Self

A fully green color with full alpha.

pub const BLUE: Self

A fully blue color with full alpha.

pub const NAN: Self

An invalid color.

This type can be used to represent an invalid color value; in some rendering applications the color will be ignored, enabling performant hacks like hiding lines by setting their color to INVALID.

pub const fn new(red: f32, green: f32, blue: f32, alpha: f32) -> Self

Construct a new LinearRgba color from components.

pub const fn rgb(red: f32, green: f32, blue: f32) -> Self

Construct a new LinearRgba color from (r, g, b) components, with the default alpha (1.0).

Arguments

• red - Red channel. [0.0, 1.0]
• green - Green channel. [0.0, 1.0]
• blue - Blue channel. [0.0, 1.0]

pub const fn with_red(self, red: f32) -> Self

Return a copy of this color with the red channel set to the given value.

pub const fn with_green(self, green: f32) -> Self

Return a copy of this color with the green channel set to the given value.

pub const fn with_blue(self, blue: f32) -> Self

Return a copy of this color with the blue channel set to the given value.

pub fn as_u32(&self) -> u32

Converts this color to a u32.

Maps the RGBA channels in RGBA order to a little-endian byte array (GPUs are little-endian). A will be the most significant byte and R the least significant.

Trait Implementations

impl Add for LinearRgba

type Output = LinearRgba

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation.

impl AddAssign for LinearRgba

fn add_assign(&mut self, rhs: Self)

Performs the += operation.

impl Alpha for LinearRgba

fn with_alpha(&self, alpha: f32) -> Self

Return a new version of this color with the given alpha value.

fn alpha(&self) -> f32

Return the alpha component of this color.

fn set_alpha(&mut self, alpha: f32)

Sets the alpha component of this color.

fn is_fully_transparent(&self) -> bool

Is the alpha component of this color less than or equal to 0.0?

fn is_fully_opaque(&self) -> bool

Is the alpha component of this color greater than or equal to 1.0?

impl Clone for LinearRgba

fn clone(&self) -> LinearRgba

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ColorToComponents for LinearRgba

fn to_f32_array(self) -> [f32; 4]

Convert to an f32 array

fn to_f32_array_no_alpha(self) -> [f32; 3]

Convert to an f32 array without the alpha value

fn to_vec4(self) -> Vec4

Convert to a Vec4

fn to_vec3(self) -> Vec3

Convert to a Vec3

fn from_f32_array(color: [f32; 4]) -> Self

Convert from an f32 array

fn from_f32_array_no_alpha(color: [f32; 3]) -> Self

Convert from an f32 array without the alpha value

fn from_vec4(color: Vec4) -> Self

Convert from a Vec4

fn from_vec3(color: Vec3) -> Self

Convert from a Vec3

impl ColorToPacked for LinearRgba

fn to_u8_array(self) -> [u8; 4]

Convert to [u8; 4] where that makes sense (Srgba is most relevant)

fn to_u8_array_no_alpha(self) -> [u8; 3]

Convert to [u8; 3] where that makes sense (Srgba is most relevant)

fn from_u8_array(color: [u8; 4]) -> Self

Convert from [u8; 4] where that makes sense (Srgba is most relevant)

fn from_u8_array_no_alpha(color: [u8; 3]) -> Self

Convert to [u8; 3] where that makes sense (Srgba is most relevant)

impl Copy for LinearRgba

impl CreateFrom for LinearRgba

Available on crate feature encase only.

fn create_from<B>(reader: &mut Reader<B>) -> Self

where B: BufferRef,

impl Debug for LinearRgba

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

Formats the value using the given formatter.

impl Default for LinearRgba

fn default() -> Self

Construct a new LinearRgba color with the default values (white with full alpha).

impl<'de> Deserialize<'de> for LinearRgba

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Div<f32> for LinearRgba

type Output = LinearRgba

The resulting type after applying the / operator.

fn div(self, rhs: f32) -> Self::Output

Performs the / operation.

impl DivAssign<f32> for LinearRgba

fn div_assign(&mut self, rhs: f32)

Performs the /= operation.

impl EuclideanDistance for LinearRgba

fn distance_squared(&self, other: &Self) -> f32

Distance squared from self to other.

fn distance(&self, other: &Self) -> f32

Distance from self to other.

impl From<Color> for LinearRgba

fn from(value: Color) -> Self

Converts to this type from the input type.

impl From<Hsla> for LinearRgba

fn from(value: Hsla) -> Self

Converts to this type from the input type.

impl From<Hsva> for LinearRgba

fn from(value: Hsva) -> Self

Converts to this type from the input type.

impl From<Hwba> for LinearRgba

fn from(value: Hwba) -> Self

Converts to this type from the input type.

impl From<Laba> for LinearRgba

fn from(value: Laba) -> Self

Converts to this type from the input type.

impl From<Lcha> for LinearRgba

fn from(value: Lcha) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Color

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Hsla

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Hsva

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Hwba

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Laba

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Lcha

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Color

Available on crate feature wgpu-types only.

fn from(color: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Okhsla

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Okhsva

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Okhwba

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Oklaba

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Oklcha

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Srgba

fn from(value: LinearRgba) -> Self

Converts to this type from the input type.

impl From<LinearRgba> for Xyza

fn from(_: LinearRgba) -> Self

Converts to this type from the input type.

impl From<Okhsla> for LinearRgba

fn from(value: Okhsla) -> Self

Converts to this type from the input type.

impl From<Okhsva> for LinearRgba

fn from(value: Okhsva) -> Self

Converts to this type from the input type.

impl From<Okhwba> for LinearRgba

fn from(value: Okhwba) -> Self

Converts to this type from the input type.

impl From<Oklaba> for LinearRgba

fn from(value: Oklaba) -> Self

Converts to this type from the input type.

impl From<Oklcha> for LinearRgba

fn from(value: Oklcha) -> Self

Converts to this type from the input type.

impl From<Srgba> for LinearRgba

fn from(value: Srgba) -> Self

Converts to this type from the input type.

impl From<Xyza> for LinearRgba

fn from(_: Xyza) -> Self

Converts to this type from the input type.

impl FromReflect for LinearRgba

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 LinearRgba

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 Gray for LinearRgba

const BLACK: Self = Self::BLACK

A pure black color.

const WHITE: Self = Self::WHITE

A pure white color.

fn gray(lightness: f32) -> Self

Returns a grey color with the provided lightness from (0.0 - 1.0). 0 is black, 1 is white.

impl Luminance for LinearRgba

fn luminance(&self) -> f32

Luminance calculated using the CIE XYZ formula.

fn with_luminance(&self, luminance: f32) -> Self

Scales the color to the target luminance, preserving its chromaticity. A saturated color or a target above 1.0 can push components outside [0.0, 1.0].

fn darker(&self, amount: f32) -> Self

The target luminance is clamped to [0.0, 1.0], so this is not suitable for HDR colors. To scale an HDR color, use with_luminance.

fn lighter(&self, amount: f32) -> Self

The target luminance is clamped to [0.0, 1.0], so this is not suitable for HDR colors. To scale an HDR color, use with_luminance.

impl Mix for LinearRgba

fn mix(&self, other: &Self, factor: f32) -> Self

Linearly interpolate between this and another color, by factor. Factor should be between 0.0 and 1.0.

fn mix_assign(&mut self, other: Self, factor: f32)

Linearly interpolate between this and another color, by factor, storing the result in this color. Factor should be between 0.0 and 1.0.

impl Mul<LinearRgba> for f32

type Output = LinearRgba

The resulting type after applying the * operator.

fn mul(self, rhs: LinearRgba) -> Self::Output

Performs the * operation.

impl Mul<f32> for LinearRgba

type Output = LinearRgba

The resulting type after applying the * operator.

fn mul(self, rhs: f32) -> Self::Output

Performs the * operation.

impl MulAssign<f32> for LinearRgba

fn mul_assign(&mut self, rhs: f32)

Performs the *= operation.

impl Neg for LinearRgba

type Output = LinearRgba

The resulting type after applying the - operator.

fn neg(self) -> Self::Output

Performs the unary - operation.

impl PartialEq for LinearRgba

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

Equality operator ==.

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

Inequality operator !=.

impl PartialReflect for LinearRgba

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 reflect_partial_cmp(&self, value: &dyn PartialReflect) -> Option<Ordering>

Returns a “partial comparison” result.

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) -> Result<Box<dyn PartialReflect>, ReflectCloneError>

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

Debug formatter for the value.

fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type.

impl Pod for LinearRgba

impl ReadFrom for LinearRgba

Available on crate feature encase only.

fn read_from<B: BufferRef>(&mut self, reader: &mut Reader<B>)

impl Reflect for LinearRgba

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 Serialize for LinearRgba

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ShaderSize for LinearRgba

Available on crate feature encase only.

const SHADER_SIZE: NonZero<u64> = _

Represents WGSL Size (equivalent to ShaderType::min_size)

impl ShaderType for LinearRgba

Available on crate feature encase only.

fn min_size() -> NonZero<u64>

Represents the minimum size of Self (equivalent to GPUBufferBindingLayout.minBindingSize)

fn size(&self) -> NonZero<u64>

Returns the size of Self at runtime

fn assert_uniform_compat()

Asserts that Self meets the requirements of the uniform address space restrictions on stored values and the uniform address space layout constraints

impl StableInterpolate for LinearRgba

fn interpolate_stable(&self, other: &Self, t: f32) -> Self

Interpolate between this value and the other given value using the parameter t. At t = 0.0, a value equivalent to self is recovered, while t = 1.0 recovers a value equivalent to other, with intermediate values interpolating between the two. See the trait-level documentation for details.

fn interpolate_stable_assign(&mut self, other: &Self, t: f32)

A version of interpolate_stable that assigns the result to self for convenience.

fn smooth_nudge(&mut self, target: &Self, decay_rate: f32, delta: f32)

Smoothly nudge this value towards the target at a given decay rate. The decay_rate parameter controls how fast the distance between self and target decays relative to the units of delta; the intended usage is for decay_rate to generally remain fixed, while delta is something like delta_time from an updating system. This produces a smooth following of the target that is independent of framerate.

impl Struct for LinearRgba

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

Gets 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>

Gets 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>

Gets 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>

Gets 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>

Gets the name of the field with index index.

fn index_of_name(&self, name: &str) -> Option<usize>

Gets the index of the field with the given name.

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) -> Result<DynamicStruct, ReflectCloneError>

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 StructuralPartialEq for LinearRgba

impl Sub for LinearRgba

type Output = LinearRgba

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self::Output

Performs the - operation.

impl SubAssign for LinearRgba

fn sub_assign(&mut self, rhs: Self)

Performs the -= operation.

impl TypePath for LinearRgba

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 LinearRgba

fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.

impl VectorSpace for LinearRgba

const ZERO: Self

The zero vector, which is the identity of addition for the vector space type.

type Scalar = f32

The scalar type of this vector space.

fn lerp(self, rhs: Self, t: Self::Scalar) -> Self

Perform vector space linear interpolation between this element and another, based on the parameter t. When t is 0, self is recovered. When t is 1, rhs is recovered.

impl WriteInto for LinearRgba

Available on crate feature encase only.

fn write_into<B: BufferMut>(&self, writer: &mut Writer<B>)

impl Zeroable for LinearRgba

fn zeroed() -> Self

Calls zeroed.