cocos2d-x新手引导遮罩CCClippingNode裁剪区域

废话不多说，我直接封装了一个类，是个layer，需要的时候直接添加layer就行  //白白原创

头文件

#pragma once
#include "cocos2d.h"

USING_NS_CC;

const int kTagBackground=0;
const int kTagClipNode=1;
const int kTagTip=2;

class TestLayer :
	public CCLayer
{
public:
	CREATE_FUNC(TestLayer);

	virtual bool init();

	virtual void registerWithTouchDispatcher();
	virtual bool ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent);

	CCClippingNode* clip;
	CCSprite* tip;
};

源文件

#include "TestLayer.h"


bool TestLayer::init()
{
	CCSize visibleSize=CCDirector::sharedDirector()->getVisibleSize();

	CCSprite* background = CCSprite::create("HelloWorld.png");
	background->setPosition(ccp(visibleSize.width/2,visibleSize.height/2));
	this->addChild(background,kTagBackground);

	clip=CCClippingNode::create();  //设置裁剪节点
	clip->setInverted(TRUE);  //设置ALPHA镂空的阈值， ture:裁剪区域镂空，其他区域显示底板颜色 false：裁剪区域显示底板颜色，其他区域镂空
	clip->setAlphaThreshold(1000.5f); //设置ALPHA的测试参考值   //奇怪的东东  /设置alpha值（0~1），这个很重要，裁剪是按像素抠图的，所以只有大于这个alpha值的模版像素才会被画出来  
	//默认是1，也就是完全裁剪。  
	this->addChild(clip,kTagClipNode); //创建一个剪辑区域

	CCLayerColor* back=CCLayerColor::create(ccc4(153,0,0,200)); 
	clip->addChild(back);//给clip加一个颜色层，clip不受影响，其他区域有层级遮挡

//	以下模型是drawnode遮罩
// 	CCDrawNode* front=CCDrawNode::create();
// 	ccColor4F yellow = {1, 1, 0, 1};
// 	CCPoint rect[4]={ccp(-30,30),ccp(30,30),ccp(30,-30),ccp(-30,-30)};
// 	front->drawPolygon(rect, 4, yellow, 0, yellow); //绘制四边形
// 	front->setPosition(ccp(visibleSize.width/2, visibleSize.height/2));
// 	clip->setStencil(front); //一定要有，设置裁剪模板

// 	//以下模型是带图像遮罩
	CCNode* nodef=CCNode::create();
	CCSprite* close=CCSprite::create("CloseSelected.png");
	nodef->addChild(close);
	nodef->setPosition(ccp(visibleSize.width/2,visibleSize.height/2));
	clip->setStencil(nodef); //印刷，使图片被印刷出来，带图形的遮罩

	tip = CCSprite::create("tip.png");
	tip->setScale(0.5f);
	tip->setRotation(60);
	tip->setPosition(ccp(visibleSize.width/2-70,visibleSize.height/2+50));
	this->addChild(tip,kTagTip);
	tip->runAction(CCRepeatForever::create(CCSequence::create(CCScaleBy::create(0.25f,0.95f),CCScaleTo::create(0.25f,0.5),NULL)));
 	this->setTouchEnabled(true);

	return true;
}

void TestLayer::registerWithTouchDispatcher()  
{  
	CCDirector *pDirector=CCDirector::sharedDirector();  
	pDirector->getTouchDispatcher()->addTargetedDelegate(this,0,true);  
}

bool TestLayer::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent)
{
	CCSize visibleSize=CCDirector::sharedDirector()->getVisibleSize();

	CCPoint point=CCDirector::sharedDirector()->convertToGL(pTouch->getLocationInView());
	CCRect rect=CCRectMake(visibleSize.width/2-30,visibleSize.height/2-30,60,60);
	if (rect.containsPoint(point))
	{
		this->removeChild(tip);
		this->removeChild(clip);
		return true;
	}
	return false;
}