Cocos2d-x类似coverflow效果

作者: 星月相随
发布时间:2015-07-01 17:01:52

由于镜面反射涉及到openGL,不会。

h文件:

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#ifndef __CoverView_H__ 
#define __CoverView_H__ 
#include "cocos2d.h" 
#include "cocos-ext.h" 
USING_NS_CC; 
USING_NS_CC_EXT; 
class CoverView : public CCNode , public CCScrollViewDelegate , public CCTouchDelegate 
public: 
    CoverView(); 
    ~CoverView(); 
     /** 
     *
     * @param scrollView的rect
     * @param scrollView滚动size
     * @param card之间的距离
     * @param card之间的缩放
     */ 
    static CoverView* create(CCRect swBox, CCSize slSize ,float disDistance , float disScale ); 
    virtual bool init(CCRect swBox , CCSize slSize , float disDistance , float disScale); 
    virtual void onEnter(); 
    virtual void onExit(); 
    virtual bool ccTouchBegan(CCTouch* pTouch, CCEvent* pEvent);  
    virtual void ccTouchMoved(CCTouch* pTouch, CCEvent* pEvent);  
    virtual void ccTouchEnded(CCTouch* pTouch, CCEvent* pEvent); 
    void initData(); 
    void scrollViewDidScroll(CCScrollView* view);   
    void scrollViewDidZoom(CCScrollView* view);  
    void adjustCardScale(CCPoint adjustPoint); 
    void adjustScrollView(CCPoint adjustPoint); 
    void adjusetEndScrollView(); 
    void cardViewEnd_callBack(CCNode* pSender); 
    int getCurCardIndex();//当前中间card索引 从0开始 
    void addCard(CCNode * card); 
    void addCard(CCNode * card, int zOrder); 
    void addCard(CCNode* card, int zOrder, int tag); 
    CC_SYNTHESIZE(CCPoint , swPosition , SwPosition);//scrollView 位置 
    CC_SYNTHESIZE(CCSize , swSize , SwSize);//scrollView大小 
    CC_SYNTHESIZE(CCSize , slSize , SlSize);//scrollLayer 大小 
    CC_SYNTHESIZE(float , disDistance , DisDistance);//card距离间隔 
    CC_SYNTHESIZE(float , disScale , DisScale);//crad缩放间隔 
    CC_SYNTHESIZE(CCRect , swBox , SwBox);//scrollview 边框 
    CC_SYNTHESIZE(CCLayer* , scrollLayer , scrollLayer);//scrollView的containLayer 
    CC_SYNTHESIZE(int , cardNum , CardNum);//card索引 
    CC_PROPERTY(CCPoint , offsetPosition , OffsetPosition);//card起始位置 
private: 
    CCSize wSize; 
    CCArray* cardArray; 
    CCScrollView* scrollView; 
}; 
#endif
.cpp文件
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#include "CoverView.h" 
   
CoverView::CoverView() 
   
   
CoverView::~CoverView() 
    CC_SAFE_RELEASE_NULL(cardArray); 
   
CoverView* CoverView::create(CCRect swBox, CCSize slSize , float disDistance , float disScale) 
    CoverView* cover = new CoverView(); 
    if(cover && cover->init(swBox,slSize,disDistance,disScale)) 
    
        cover->autorelease(); 
        return cover; 
    
    CC_SAFE_DELETE(cover); 
    return NULL; 
   
bool CoverView::init(CCRect swBox , CCSize slSize , float disDistance , float disScale) 
    if(!CCNode::init()) return false
    this->swBox = swBox; 
    this->swPosition = swBox.origin; 
    this->swSize = swBox.size; 
    this->slSize = slSize; 
    this->disDistance = disDistance; 
    this->disScale = disScale; 
    initData(); 
    return true
   
   
void CoverView::initData() 
    wSize = CCDirector::sharedDirector()->getWinSize(); 
    cardArray = CCArray::create(); 
    cardArray->retain(); 
    cardNum = 0; 
   
    offsetPosition = ccp(swSize.width/2,swSize.height/2); 
   
    scrollLayer = CCLayer::create(); 
    scrollLayer->setAnchorPoint(CCPointZero); 
    scrollLayer->setPosition(CCPointZero); 
    scrollLayer->setContentSize(slSize); 
    scrollView = CCScrollView::create(swSize,scrollLayer); 
    scrollView->setAnchorPoint(CCPointZero); 
    scrollView->setContentOffset(ccp(0,0)); 
    scrollView->setTouchEnabled(false);   
    scrollView->setDelegate(this);   
    scrollView->setDirection(kCCScrollViewDirectionHorizontal);   
    addChild(scrollView,1); 
   
void CoverView::onEnter() 
    CCNode::onEnter(); 
    CCDirector::sharedDirector()->getTouchDispatcher()->addTargetedDelegate(this, 0 , false);   
   
void CoverView::onExit() 
    CCDirector::sharedDirector()->getTouchDispatcher()->removeDelegate(this); 
    removeAllChildren(); 
    CCNode::onExit(); 
   
bool CoverView::ccTouchBegan(CCTouch* pTouch, CCEvent* pEvent) 
    return true
   
void CoverView::ccTouchMoved(CCTouch* pTouch, CCEvent* pEvent) 
    CCPoint scroll_prepoint = pTouch->getPreviousLocation(); 
    CCPoint scroll_movepoint = pTouch->getLocation(); 
    if(swBox.containsPoint(scroll_movepoint)) 
    
        CCPoint adjustPoint = scroll_movepoint-scroll_prepoint; 
        adjustScrollView(adjustPoint);   
        adjustCardScale(adjustPoint); 
    
   
void CoverView::ccTouchEnded(CCTouch* pTouch, CCEvent* pEvent) 
    CCPoint scroll_prepoint = pTouch->getPreviousLocation(); 
    CCPoint scroll_endpoint = pTouch->getLocation(); 
    float disX = scroll_endpoint.x - scroll_endpoint.x; 
    adjusetEndScrollView(); 
   
void CoverView::adjustCardScale(CCPoint adjustPoint) 
    float disX = adjustPoint.x; 
    CCObject* obj = NULL; 
    CCARRAY_FOREACH(cardArray,obj) 
    
        CCNode* card = (CCNode*) obj; 
        float offset = scrollView->getContentOffset().x; 
        float posX = card->getPositionX() + offset; 
        float disMid = abs(swSize.width/2-posX); 
        float scale = 1- disMid/disDistance*disScale; 
        card->setScale(scale); 
        int zOr = (int) (1000-disMid*0.1); 
        card->setZOrder(zOr); 
    
   
void CoverView::adjustScrollView(CCPoint adjustPoint) 
    CCPoint endPoint = ccpAdd(scrollView->getContentOffset(),ccp(adjustPoint.x,0)); 
    scrollView->unscheduleAllSelectors(); 
    scrollView->setContentOffset(endPoint,false); 
   
void CoverView::adjusetEndScrollView() 
    CCObject* obj = NULL; 
    float minX = wSize.height; 
    float midX = swSize.width/2; 
    //获取距离中间最小值的card 
    CCARRAY_FOREACH(cardArray,obj) 
    
        CCNode* card = (CCNode*) obj; 
        float offset = scrollView->getContentOffset().x; 
        //转化父类坐标 
        float posX = card->getPositionX() + offset; 
        float disMid = midX-posX; 
        if(abs(disMid) < abs(minX)) minX = disMid; 
    
   
    CCARRAY_FOREACH(cardArray,obj) 
    
        CCNode* item = (CCNode*) obj; 
        //转化父类坐标 
        float offset = scrollView->getContentOffset().x; 
        float posX = item->getPositionX() + offset ; 
        //距离中间长度 
        float disMid = abs(midX - posX - minX); 
        //目标scale 
        float scale = 1- disMid/disDistance*disScale; 
        CCScaleTo* scaleBy = CCScaleTo::create(0.2f,scale); 
        item->runAction(scaleBy); 
        int zOr = (int) (1000-disMid*0.1); 
        item->setZOrder(zOr); 
    
    CCLayer* scrollLayer = (CCLayer*)scrollView->getContainer(); 
    CCMoveBy* moveBy = CCMoveBy::create(0.2f,ccp(minX,0)); 
    //CCCallFuncN* callFuncN = CCCallFuncN::create(this,callfuncN_selector(CoverView::cardViewEnd_callBack)); 
    //CCSequence* seq = CCSequence::create(moveBy,callFuncN,NULL); 
    //scrollLayer->runAction(seq); 
    scrollLayer->runAction(moveBy); 
   
void CoverView::cardViewEnd_callBack(CCNode* pSender) 
    getCurCardIndex(); 
   
void CoverView::scrollViewDidScroll(CCScrollView* view) 
   
   
void CoverView::scrollViewDidZoom(CCScrollView* view) 
   
   
   
   
void CoverView::addCard(CCNode * card) 
    int zOrder = 1000 - cardNum; 
    this->addCard(card, zOrder, 0); 
   
void CoverView::addCard(CCNode * card, int zOrder) 
    this->addCard(card, zOrder,0); 
   
void CoverView::addCard(CCNode* card, int zOrder, int tag) 
    float positionX = offsetPosition.x + disDistance*cardNum; 
    float scale = 1 - disScale*cardNum; 
    card->setPosition(ccp(positionX,offsetPosition.y)); 
    card->setScale(scale); 
    cardArray->addObject(card); 
    scrollLayer->addChild(card , zOrder,tag); 
    cardNum++; 
    //CCLog("crad%d:[%f , %f]",cardNum,card->getPositionX(),card->getPositionY()); 
   
int CoverView::getCurCardIndex() 
    float distance1 = - scrollLayer->getPositionX(); 
    float distance2 = swSize.width/2 - offsetPosition.x; 
    //+5 浮点数误差 
    int index = (distance1 + distance2 + 5) / (disDistance); 
    //CCLog("card index:%d  distance1:%f",index,distance1); 
    return index; 
   
void CoverView::setOffsetPosition(CCPoint var
    offsetPosition = var
    CCObject* obj = NULL; 
    cardNum = 0; 
    CCARRAY_FOREACH(cardArray,obj) 
    
        CCNode* card = (CCNode*) obj; 
        float positionX = offsetPosition.x + disDistance*cardNum; 
        card->setPosition(ccp(positionX,offsetPosition.y)); 
        cardNum++; 
    
    adjustCardScale(CCPointZero); 
   
CCPoint CoverView::getOffsetPosition() 
    return offsetPosition; 
}
在HelloWorld中调用:
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bool HelloWorld::init() 
    if ( !CCLayer::init() ) 
    
        return false
    
       
    CCSpriteFrameCache::sharedSpriteFrameCache()->addSpriteFramesWithFile("image/logoLayer.plist"); 
    float winWidth = CCDirector::sharedDirector()->getWinSize().width; 
    float winHeight = CCDirector::sharedDirector()->getWinSize().height; 
   
    CCRect swRect = CCRectMake(0.01f*winWidth,0.4f*winHeight,0.98f*winWidth,0.33f*winHeight); 
    CCSize slSize = CCSizeMake(2.3f*winWidth,0.33f*winHeight); 
    float disDistance = 0.2f*winWidth; 
    float disScale = 0.25f; 
    CoverView* coverView = CoverView::create(swRect,slSize,disDistance,disScale); 
    CCLog("add card"); 
    for(int i = 0 ; i< 11 ; i++) 
    
        CCSprite* player = CCSprite::createWithSpriteFrameName("hero_bg.png"); 
        coverView->addCard(player); 
    
    //coverflow1.png默认第一张在coverView的正中间  coverflow2.png改变第一张的位置有卡片初始不一定在最中间 需要手动调整 
    //coverView->setOffsetPosition(ccp(0.1f*winWidth,swRect.size.height/2)); 
    coverView->setPosition(swRect.origin); 
    addChild(coverView); 
    return true
}
 
 
原文链接:http://cocos2d.9tech.cn/news/2014/0326/40111.html

来源:http://www.cnblogs.com/wodehao0808/p/3654507.html

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