modeling/src/maths/mat4/subtract.js

  1. /**
  2.  * Subtracts matrix b from matrix a. (A-B)
  3.  *
  4.  * @param {mat4} out - receiving matrix
  5.  * @param {mat4} a - first operand
  6.  * @param {mat4} b - second operand
  7.  * @returns {mat4} out
  8.  * @alias module:modeling/maths/mat4.subtract
  9.  */
  10. const subtract = (out, a, b) => {
  11.   out[0] = a[0] - b[0]
  12.   out[1] = a[1] - b[1]
  13.   out[2] = a[2] - b[2]
  14.   out[3] = a[3] - b[3]
  15.   out[4] = a[4] - b[4]
  16.   out[5] = a[5] - b[5]
  17.   out[6] = a[6] - b[6]
  18.   out[7] = a[7] - b[7]
  19.   out[8] = a[8] - b[8]
  20.   out[9] = a[9] - b[9]
  21.   out[10] = a[10] - b[10]
  22.   out[11] = a[11] - b[11]
  23.   out[12] = a[12] - b[12]
  24.   out[13] = a[13] - b[13]
  25.   out[14] = a[14] - b[14]
  26.   out[15] = a[15] - b[15]
  27.   return out
  28. }
  30. module.exports = subtract