toString = (polygon) => {
  let result = 'poly3: vertices: ['
  polygon.vertices.forEach((vertex) => {
    result += `${vec3.toString(vertex)}, `
  })
  result += ']'
  return result
}
@param {poly3} polygon - the polygon to measure
@return {String} the string representation
@alias module:modeling/geometries/poly3.toString