@interface HelloPoster.CircularArc : _TtCs12_SwiftObject {
    void /* unknown type, empty encoding */ p0;
    void /* unknown type, empty encoding */ n;
    void /* unknown type, empty encoding */ perp;
    void /* unknown type, empty encoding */ r;
    void /* unknown type, empty encoding */ theta0;
    void /* unknown type, empty encoding */ theta1;
    void /* unknown type, empty encoding */ center;
    void /* unknown type, empty encoding */ focus;
    void /* unknown type, empty encoding */ focusRadius;
}

@end