@interface PXFloatingCardSpringInfo : NSObject @property (readonly, nonatomic) double mass; @property (readonly, nonatomic) double stiffness; @property (readonly, nonatomic) double damping; @property (readonly, nonatomic) double initialVelocity; @property (readonly, nonatomic) double undershootTime; @property (readonly, nonatomic) double overshootTime; @property (readonly, nonatomic) double settlingTime; - (id)description; - (id)initWithMass:(double)a0 stiffness:(double)a1 damping:(double)a2 initialVelocity:(double)a3; - (double)valueAtTime:(double)a0; @end