Custom Shape based kaleidoscope chosen from source input?

I have seen this Photoshop action that is able to make Kaleidoscope images based on ANY shape you may want that will cut the source image

As seen in the examples shown Kaleidoscope shape based Photoshop action

I have thought that maybe it could be done that you could choose a shape (PNG with transparent background or selection) and use this shape to cut the source image given, and then with this cut shape, you can make the kaleidoscope effect as seen on the examples

As I understand it the built-in kaleidoscope already does this with the 7 modes included (really only 4 shapes), but as this is very limiting, it would be good to make a filter that could be able to use custom shape that you could use for the Kaleidoscope

AND also is important if possible to be able to preview the cut of the source image to know what part of the source image is used according to the shape you have given, please see the second post below for an example made by Rachel Duim

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SpaceRay wrote: AND also is important if possible to be able to preview the cut of the source image to know what part of the source image is used according to the shape you have given

Would be very good to have something like the awesome and amazing Wallpaper Group filters made by Rachel Duim

17 Wallpaper groups by Rachel Duim

Here below is a screenshot of the preview seed of the Wallpaper group 11

So to make it clear, what I suggest is to be able to replace the triangle shown on the screenshot with ANY shape you may want and and have a kaleidoscope effect

You can modify this to use any external shape

shapescope v001.ffxml

I had forgot about this and I have found it again and think that I can continue making it into a full customizable version and then send it to the FF library

I have also found the Kaleido FX software that also makes something like this and think I can do it for free in FF although would be slower and not realtime

Thanks very much emme for your expert and help and admire much the things you are able to do

Is interesting and helpful to see how you have used the Loop component nested and with position to learn even more