chromatism/src/helpers/matrix-multiply.js

A simple set of utility functions for colours.

export default function matrixMultiply (a, b) {
  var result = []
  for (let i = 0; i < a.length; i++) {
    result[i] = []
    for (let j = 0; j < b[0].length; j++) {
      var sum = 0
      for (let k = 0; k < a[0].length; k++) {
        sum += a[i][k] * b[k][j]
      }
      result[i][j] = sum
    }
  }
  return result
}