PaQ WaK

Hello

If all you do is transforming the object you want to copy, you don't need to use a loop at all.
"Just" set the appropriate attribute on the point cloud (pscale,scale,N,up,orient etc).

Here's an example of a fountain type emitter, where the boxes a aligned to the velocity, and scaled by the velocity length.
The random hscript expression can be replaced by "rand(@ptnum)" in vex, that will return a random float based on the particle id for example.

Once oriented/aligned to the origin you can chose whatever strategy you want to do the slice. There might be some flow how I orient the plane tho, but without any context it's hard to understand. You can also pre-uv those windows so it's easier to work on them later on.

It's the spare input link I added in the twist so I can use an expression to compute the capture length.
( bbox(-1,D_ZSIZE))

-1 mean the first space input.