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Documentation / @interstellar-tools/types / Matrix3x3Type

Type Alias: Matrix3x3Type ​

ts
type Matrix3x3Type = readonly [
  readonly [number, number, number],
  readonly [number, number, number],
  readonly [number, number, number]
];

Defined in: math.ts:44

Immutable 3×3 matrix of numbers.

This type is typically used for direction cosine matrices (DCMs) / rotation matrices and other small linear transforms in 3D Cartesian space.

Layout:

  • Row-major: M[row][col]
  • Each row is a 3-tuple [x, y, z] (i.e., column 0..2).

Example ​

ts
const I: Matrix3 = [
  [1, 0, 0],
  [0, 1, 0],
  [0, 0, 1]
];