update method

void update(num time, num deltaTime, num timeDirection, int accuIndex,)

Implementation

void update(num time, num deltaTime, num timeDirection, int accuIndex) {
  // called by the mixer
  if (!enabled) {
    // call ._updateWeight() to update ._effectiveWeight

    _updateWeight(time);
    return;
  }

  final startTime = _startTime;

  if (startTime != null) {
    // check for scheduled start of action

    final timeRunning = (time - startTime) * timeDirection;
    if (timeRunning < 0 || timeDirection == 0) {
      deltaTime = 0;
    }
    else{
      // start
      _startTime = null; // unschedule
      deltaTime = timeDirection * timeRunning;
    }
  }

  // apply time scale and advance time

  deltaTime *= _updateTimeScale(time);
  final clipTime = _updateTime(deltaTime);

  // note: _updateTime may disable the action resulting in
  // an effective weight of 0

  double weight = _updateWeight(time);

  if (weight > 0) {
    final interpolants = this.interpolants;
    final propertyMixers = propertyBindings;

    switch (blendMode) {
      case AdditiveAnimationBlendMode:
        for (int j = 0, m = interpolants.length; j != m; ++j) {
          interpolants[j]!.evaluate(clipTime);
          propertyMixers[j]!.accumulateAdditive(weight);
        }

        break;

      case NormalAnimationBlendMode:
      default:
        for (int j = 0; j < interpolants.length; ++j) {
          interpolants[j]!.evaluate(clipTime);
          propertyMixers[j]!.accumulate(accuIndex, weight);
        }
    }
  }
}