Modal view animation customizations?

Just wondering where I might start looking… ionic.views.Modal = ionic.views.View.inherit … there’s nothing in here in regards to animations… I also don’t see anything in View. But before I trace the entire library, and possibly reinvent wheels, what I really need to accomplish is opening a Modal sliding up, but only partially covering the screen (about 40% of the screen height). Any ideas?

Thanks in advance!