modeling/src/maths/mat4/identity.js

  1. /**
  2.  * Set a matrix to the identity transform.
  3.  *
  4.  * @param {mat4} out - receiving matrix
  5.  * @returns {mat4} out
  6.  * @alias module:modeling/maths/mat4.identity
  7.  */
  8. const identity = (out) => {
  9.   out[0] = 1
  10.   out[1] = 0
  11.   out[2] = 0
  12.   out[3] = 0
  13.   out[4] = 0
  14.   out[5] = 1
  15.   out[6] = 0
  16.   out[7] = 0
  17.   out[8] = 0
  18.   out[9] = 0
  19.   out[10] = 1
  20.   out[11] = 0
  21.   out[12] = 0
  22.   out[13] = 0
  23.   out[14] = 0
  24.   out[15] = 1
  25.   return out
  26. }
  28. module.exports = identity