Method add

src/utils/animation.js:89–97

* Adds a segment to the animation. Each segment starts at offset (delay) and * runs for a portion of the overall animation (duration). Note that both * delay and duration and NormTimeDef types which accept values from 0 to 1. * Optionally, the time is pushed through a curve. If curve is not

(delay, transition, duration, opt_curve)

   * @return {!Animation}
   */
  add(delay, transition, duration, opt_curve) {
    this.segments_.push({
      delay,
      func: transition,
      duration,
      curve: getCurve(opt_curve),
    });
    return this;
  }

  /**
   * Starts the animation and returns the AnimationPlayer object that can be