Take many different shapes and arrange them into a swoosh formation that tapers at one end.
I don't know if that title is clear but I want leaves to "swoosh" from left to right. The left side should have many leaves that are almost indistinct from one another and reduce in number as they "swoosh" to the right. I also need to be able to change the shape from leaves to anything I make. Also also I need to be able to rotate the shapes. So I basically want to create a controlled particle effect that follows constraints in the form of a swoosh.


