@interface SCNAccelerationConstraint : SCNConstraint { float _maximumLinearVelocity; float _maximumLinearAcceleration; float _decelerationDistance; float _damping; } @property (nonatomic) double maximumLinearAcceleration; @property (nonatomic) double maximumLinearVelocity; @property (nonatomic) double decelerationDistance; @property (nonatomic) double damping; + (BOOL)supportsSecureCoding; + (id)accelerationConstraint; - (id)init; - (void)encodeWithCoder:(id)a0; - (id)initWithCoder:(id)a0; - (id)copyWithZone:(struct _NSZone { } *)a0; @end