measureBoundingBox = (polygon) => {
  const vertices = polygon.vertices
  const numvertices = vertices.length
  const min = numvertices === 0 ? vec3.create() : vec3.clone(vertices[0])
  const max = vec3.clone(min)
  for (let i = 1; i < numvertices; i++) {
    vec3.min(min, min, vertices[i])
    vec3.max(max, max, vertices[i])
  }
  return [min, max]
}
@param {poly3} polygon - the polygon to measure
@returns {Array} an array of two vectors (3D);  minimum and maximum coordinates
@alias module:modeling/geometries/poly3.measureBoundingBox