/** 2D vector storage: Float32Array length 2, brand=__vec2. */
export type Vec2 = Float32Array & {
    readonly __vec2: void;
};
/** 3D vector storage: Float32Array length 3, brand=__vec3. */
export type Vec3 = Float32Array & {
    readonly __vec3: void;
};
/** 4D vector / homogeneous coordinate storage: Float32Array length 4, brand=__vec4. */
export type Vec4 = Float32Array & {
    readonly __vec4: void;
};
/** Quaternion storage: Float32Array length 4 [x,y,z,w], brand=__quat (mutually exclusive with Vec4). */
export type Quat = Float32Array & {
    readonly __quat: void;
};
/** 3x3 matrix storage: Float32Array length 9 packed layout (D-P4); column-major (toGpuLayout hook reserved). */
export type Mat3 = Float32Array & {
    readonly __mat3: void;
};
/** 4x4 matrix storage: Float32Array length 16 column-major, brand=__mat4. */
export type Mat4 = Float32Array & {
    readonly __mat4: void;
};
/** Linear-space RGBA color: Float32Array length 4 [r,g,b,a] ∈ [0,1], brand=__color (mutually exclusive with Vec4). */
export type Color = Float32Array & {
    readonly __color: void;
};
/** Euler angle: enum of six intrinsic rotation orders (D-P19). */
export type EulerOrder = 'XYZ' | 'YXZ' | 'ZXY' | 'ZYX' | 'YZX' | 'XZY';
/**
 * Euler angle interface: x/y/z radians + order rotation order.
 *
 * Not a Float32Array because length=3 plus a string order needs plain-object storage;
 * performance-insensitive (euler is only used at editor/IO boundary; runtime always converts to Quat).
 */
export interface Euler {
    x: number;
    y: number;
    z: number;
    order: EulerOrder;
}
/** Vec2 readable input: ArrayLike<number> of length 2. */
export type Vec2Like = ArrayLike<number>;
/** Vec3 readable input: ArrayLike<number> of length 3. */
export type Vec3Like = ArrayLike<number>;
/** Vec4 readable input: ArrayLike<number> of length 4. */
export type Vec4Like = ArrayLike<number>;
/** Quat readable input: ArrayLike<number> of length 4. */
export type QuatLike = ArrayLike<number>;
/** Mat3 readable input: ArrayLike<number> of length 9. */
export type Mat3Like = ArrayLike<number>;
/** Mat4 readable input: ArrayLike<number> of length 16. */
export type Mat4Like = ArrayLike<number>;
/** Color readable input: ArrayLike<number> of length 4. */
export type ColorLike = ArrayLike<number>;
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