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,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
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#include "CoverView.h"
CoverView::CoverView()
{
}
CoverView::~CoverView()
{
CC_SAFE_RELEASE_NULL(cardArray);
}
CoverView* CoverView::create(CCRect swBox,float disScale)
{
CoverView* cover =
new
CoverView();
if
(cover && cover->init(swBox,disScale))
{
cover->autorelease();
return
cover;
}
CC_SAFE_DELETE(cover);
return
NULL;
}
bool CoverView::init(CCRect swBox,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
,
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,0);
}
void CoverView::addCard(CCNode* card,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,tag);
cardNum++;
//cclog("crad%d:[%f,%f]",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;
}
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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,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
;
}
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