tapspace/lib/geometry/Vector/cross.js

A zoomable user interface lib for web apps

const vec3 = require('affineplane').vec3

module.exports = function (vec) {
  // @Vector:cross(vec)
  //
  // Get cross product with another vector.
  //
  // Parameters:
  //   vec
  //     a Vector, or {x,y,z} in the same space.
  //
  // Return
  //   a Vector
  //

  // Normalise to vec3.
  if (vec.transitRaw) {
    vec = vec.transitRaw(this.basis)
  }

  const cv = vec3.cross(this.vec, vec)

  const Vector = this.constructor
  return new Vector(this.basis, cv)
}