/**
   * Interpolates unspecified translation values for objectIndex from start to end.
   *
   * @param objectIndex Index to interpolate.
   * @param startPosIndex Starting translation index.
   * @param endPosIndex Ending translation index.
   */
  private void fillVecs(int objectIndex, int startPosIndex, int endPosIndex) {
    keyframes.get(startPosIndex).look[objectIndex].getTranslation(unSyncbeginPos);
    keyframes.get(endPosIndex).look[objectIndex].getTranslation(unSyncendPos);
    float startTime = keyframes.get(startPosIndex).time;
    float endTime = keyframes.get(endPosIndex).time;
    float delta = endTime - startTime;
    Vector3f tempVec = new Vector3f();

    for (int i = startPosIndex + 1; i < endPosIndex; i++) {
      float thisTime = keyframes.get(i).time;
      tempVec.interpolate(unSyncbeginPos, unSyncendPos, (thisTime - startTime) / delta);
      keyframes.get(i).look[objectIndex].setTranslation(tempVec);
    }
  }