Algodoo

Oh man I have absolutely no idea how this works

Looks fantastic though, it's almost like the machine on the left is "looking" at the shapes on the right, but with a lower resolution. 10/10

thank you!!

The working is very simple.
the pixels of the left screen are connected with the pixels of the right screen.
I have a single solid.
the pixels of the right screen are drilled.
forms on the right have the laser on the whole perimeter.
the perimeter laser has two files: one directed toward the outside and toward the inside.
the row facing towards the inside is colored and the row facing towards the outside is black.
lasers are scripted on "OnLaserHit" to color objects that strike.
when the solid moves, the laser color pixels sotostanti, when the solid has passed the laser color black pixels external to it.
given that the pixels of the two screens are connected in a single solid, when the laser colors them in the right screen, the shape appears in reduced resolution even in the left screen.