Do you remember this image in  EMP museum and Affinity which I used Mirror Filter in the application Affinity Photo?

I made this kaleidoscope video. It may help to understand how the Mirror Filter works.

kaledoscope

Music I used for this video is Grande Fantaise de Bravoure sur “La Clochette” de Paganini, S. 420 by Franz Liszt (from “リスト:ラ・カンパネラ – パガニーニによる大練習曲 S.140 第3番 クラシック名曲サウンドライブラリー“)