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    Class ColorRgba

    A RGBA color class that extends Vector4 to provide color-specific functionality. Represents colors with red, green, blue, and alpha (transparency) components, each ranging from 0.0 to 1.0.

    // Create a red color with full opacity
    const red = ColorRgba.fromCopy4(1.0, 0.0, 0.0, 1.0);

    // Create from array
    const blue = ColorRgba.fromCopyArray([0.0, 0.0, 1.0, 1.0]);

    Hierarchy (View Summary)

    Implements

    Index

    Constructors

    constructor

    Properties

    _v

    Accessors

    a b bytesPerComponent className g glslStrAsFloat glslStrAsInt glslStrAsUint r w wgslStrAsFloat wgslStrAsInt wgslStrAsUint x y z compositionType

    Methods

    at clone dot flattenAsArray isDummy isEqual isStrictEqual isTheSourceSame length lengthSquared lengthTo toString toStringApproximately v _add _divide _divideVector _dummy _fromCopy4 _fromCopyArray _fromCopyArray4 _fromCopyVector3 _fromCopyVector4 _fromVector2 _multiply _multiplyVector _normalize _one _subtract _zero add addTo divide divideTo divideVector divideVectorTo dot dummy fromArrayBuffer fromCopy4 fromCopyArray fromCopyArray4 fromCopyFloat32Array fromCopyVector3 fromCopyVector4 fromFloat32Array lengthBtw lengthSquared multiply multiplyTo multiplyVector multiplyVectorTo normalize one subtract subtractTo zero

    Constructors

    Properties

    _v

    _v: TypedArray = ...

    Internal typed array storage for vector components

    Accessors

    • get a(): number

      Gets the alpha (transparency) component of the color.

      Returns number

      The alpha component value (0.0 = transparent, 1.0 = opaque)

    • get bytesPerComponent(): number

      Gets the number of bytes per component in the underlying typed array.

      Returns number

      The number of bytes per element (4 for Float32Array, 8 for Float64Array)

    • get glslStrAsFloat(): string

      Converts the vector to a GLSL vec4 string representation with float precision.

      Returns string

      A GLSL-compatible vec4 string (e.g., "vec4(1.0, 2.0, 3.0, 4.0)")

    • get glslStrAsInt(): string

      Converts the vector to a GLSL ivec4 string representation with integer values.

      Returns string

      A GLSL-compatible ivec4 string (e.g., "ivec4(1, 2, 3, 4)")

    • get glslStrAsUint(): string

      Converts the vector to a GLSL uvec4 string representation with unsigned integer values.

      Returns string

      A GLSL-compatible uvec4 string (e.g., "uvec4(1u, 2u, 3u, 4u)")

    • get w(): number

      Gets the w component (equivalent to alpha component).

      Returns number

      The w/alpha component value

    • get wgslStrAsFloat(): string

      Converts the vector to a WGSL vec4f string representation with float precision.

      Returns string

      A WGSL-compatible vec4f string (e.g., "vec4f(1.0, 2.0, 3.0, 4.0)")

    • get wgslStrAsInt(): string

      Converts the vector to a WGSL vec4i string representation with integer values.

      Returns string

      A WGSL-compatible vec4i string (e.g., "vec4i(1, 2, 3, 4)")

    • get wgslStrAsUint(): string

      Converts the vector to a WGSL vec4u string representation with unsigned integer values.

      Returns string

      A WGSL-compatible vec4u string (e.g., "vec4u(1u, 2u, 3u, 4u)")

    • get y(): number

      Gets the y component (equivalent to green component).

      Returns number

      The y/green component value

    • get compositionType(): CompositionTypeClass<"VEC4">

      Gets the composition type identifier for this vector type.

      Returns CompositionTypeClass<"VEC4">

      The CompositionType.Vec4 identifier

    Methods

    • Gets the component value at the specified index.

      Parameters

      • i: number

        The index (0=x, 1=y, 2=z, 3=w)

      Returns number

      The component value at the specified index

    • Calculates the dot product between this vector and another vector. The dot product is the sum of the products of corresponding components.

      Parameters

      • vec: IVector4

        The vector to calculate dot product with

      Returns number

      The dot product of the two vectors

    • Checks if this vector is approximately equal to another vector within a specified tolerance.

      Parameters

      • vec: IVector4

        The vector to compare with

      • delta: number = Number.EPSILON

        The tolerance value for comparison (default: Number.EPSILON)

      Returns boolean

      True if the vectors are approximately equal, false otherwise

    • Checks if the internal storage shares the same ArrayBuffer as the provided one. Useful for determining if vectors share underlying memory.

      Parameters

      • arrayBuffer: ArrayBuffer

        The ArrayBuffer to compare against

      Returns boolean

      True if the same ArrayBuffer is used, false otherwise

    • Gets the component value at the specified index. Alias for the at() method for convenience.

      Parameters

      • i: number

        The index of the component to retrieve

      Returns number

      The component value at the given index

    Static_add

    Static_divide

    Static_divideVector

    Static_dummy

    Static_fromCopy4

    Static_fromCopyArray

    Static_fromCopyArray4

    Static_fromCopyVector3

    Static_fromCopyVector4

    Static_fromVector2

    Static_multiply

    Static_multiplyVector

    Static_normalize

    Static_one

    Static_subtract

    Static_zero

    • Divides a vector by a scalar value and stores the result in the output vector. If the divisor is zero, the result components will be set to Infinity and an error will be logged. This method modifies the output vector in-place for better performance.

      Parameters

      • vec: IVector4

        The vector to divide

      • value: number

        The scalar value to divide by

      • out: IMutableVector4

        The output vector to store the result (will be modified)

      Returns IMutableVector4

      The modified output vector with each component divided by the scalar

    • Divides the left vector by the right vector component-wise and stores the result in the output vector. If any component of the right vector is zero, the corresponding result component will be set to Infinity. This method modifies the output vector in-place for better performance.

      Parameters

      • l_vec: IVector4

        The left operand vector (dividend)

      • r_vec: IVector4

        The right operand vector (divisor)

      • out: IMutableVector4

        The output vector to store the result (will be modified)

      Returns IMutableVector4

      The modified output vector with component-wise division result

    • Calculates the dot product of two vectors. The dot product is the sum of the products of corresponding components.

      Parameters

      Returns number

      The dot product of the two vectors

    • Creates a new Vector4 from an ArrayBuffer. The ArrayBuffer should contain at least 16 bytes (4 float32 values).

      Parameters

      • arrayBuffer: ArrayBuffer

        The ArrayBuffer containing vector data

      Returns Vector4

      A new Vector4 instance using the ArrayBuffer data

    • Creates a new ColorRgba instance from individual RGBA component values.

      Parameters

      • x: number

        The red component value

      • y: number

        The green component value

      • z: number

        The blue component value

      • w: number

        The alpha component value

      Returns ColorRgba

      A new ColorRgba instance with the specified component values

    • Creates a new Vector4 by copying from a Float32Array. This creates a new Float32Array copy of the input data.

      Parameters

      • float32Array: Float32Array

        The Float32Array to copy from

      Returns Vector4

      A new Vector4 instance with copied Float32Array data

    • Creates a new Vector4 from a Float32Array. The Float32Array is used directly without copying.

      Parameters

      • float32Array: Float32Array

        The Float32Array containing vector components

      Returns Vector4

      A new Vector4 instance using the provided Float32Array

    • Calculates the squared length (magnitude) of a vector. This is more efficient than length() when only comparing magnitudes.

      Parameters

      • vec: IVector4

        The vector to calculate squared length for

      Returns number

      The squared length of the vector

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