Method constructor

src/SpringAnimation.js:57–88

(
    config: SpringAnimationConfigSingle,
  )

  _animationFrame: any;

  constructor(
    config: SpringAnimationConfigSingle,
  ) {
    super();

    this._overshootClamping = withDefault(config.overshootClamping, false);
    this._restDisplacementThreshold = withDefault(config.restDisplacementThreshold, 0.001);
    this._restSpeedThreshold = withDefault(config.restSpeedThreshold, 0.001);
    this._initialVelocity = config.velocity;
    this._lastVelocity = withDefault(config.velocity, 0);
    this._toValue = config.toValue;
    this.__isInteraction = config.isInteraction !== undefined ? config.isInteraction : true;

    var springConfig;
    if (config.bounciness !== undefined || config.speed !== undefined) {
      invariant(
        config.tension === undefined && config.friction === undefined,
        'You can only define bounciness/speed or tension/friction but not both',
      );
      springConfig = SpringConfig.fromBouncinessAndSpeed(
        withDefault(config.bounciness, 8),
        withDefault(config.speed, 12),
      );
    } else {
      springConfig = SpringConfig.fromOrigamiTensionAndFriction(
        withDefault(config.tension, 40),
        withDefault(config.friction, 7),
      );
    }
    this._tension = springConfig.tension;
    this._friction = springConfig.friction;
  }

  start(
    fromValue: number,