square shaped particle emitter?


Are there any way to make the shuriken particle system shape into a 2d square or rectangle?
The only 2d options i see is circle and edge.

I want my particles to emit from the edge of an rectangular 2d shape.
i wouldn’t think this was so difficult?

Thanks to :

The way to do this is to use a quad mesh as the emitter mesh, and then set the emission to edge in the particle system