slice procedural mesh(tree)

[erozabicka1 (erozabicka)]

and I found something similar
https://www.youtube.com/watch?v=FqE_U_rHYPk&pp=ygUbdW5yZWFsIGVuZ2luZSBjdXR0aW5nIHRyZWVz ,
but I wanted to do it myself and the method you mentioned is the only way I know right now and it will do until I change it