transform = (matrix, slice) => {
  const edges = slice.edges.map((edge) => [vec3.transform(vec3.create(), edge[0], matrix), vec3.transform(vec3.create(), edge[1], matrix)])
  return create(edges)
}
Transform the given slice using the given matrix.
@param {mat4} matrix - transform matrix
@param {slice} slice - slice to transform
@returns {slice} the transformed slice
@alias module:modeling/extrusions/slice.transform

@example
let matrix = mat4.fromTranslation([1, 2, 3])
let newslice = transform(matrix, oldslice)