PARTIAL_CURL constant
ModalTransitionStyle
const PARTIAL_CURL
When the view controller is presented, one corner of the current view curls up to reveal the presented view underneath. On dismissal, the curled up page unfurls itself back on top of the presented view. A view controller presented using this transition is itself prevented from presenting any additional view controllers.
Implementation
static const PARTIAL_CURL = ModalTransitionStyle._internal(3, 3);