/// <summary>
/// 初始化渐变
/// </summary>
/// <param name="duration"></param>
/// <param name="callback"></param>
public void setupTransition(TransitionType transType, int duration, onTransitionFinish callback)
{
this._transitionType = transType;
this._transitionDuration = duration;
this._transitionProgress = this._transitionDuration;
this.transitionFinishCallback = callback;
// 初始化渐变节点显隐状态
this.transBlack.color = new Color(0, 0, 0, 0);
this.transWhite.color = new Color(1, 1, 1, 0);
}
