convertToNodeSpace:把世界坐标转换到当前节点的本地坐标系中。
- void HelloWorld::myInit14()
- {
- CCSize size = CCDirector::sharedDirector()->getWinSize();
-
-
- CCSprite* back = CCSprite::create("ui_miss_butt_bj2song.png");
- back->setPosition(ccp(size.width*0.5, size.height*0.5));
- this->addChild(back,1,123);
-
-
- CCSprite* buttonSP = CCSprite::create("team_ok_butt.png");
- buttonSP->setPosition(ccp(back->getContentSize().width*0.8, back->getContentSize().height*0.5));
- back->addChild(buttonSP,1,321);
-
- }
-
- bool HelloWorld::ccTouchBegan(CCTouch *pTouch, CCEvent *pEvent)
- {
- beganPoint = pTouch->getLocation();
- return true;
- }
-
- void HelloWorld::ccTouchEnded(CCTouch *pTouch, CCEvent *pEvent)
- {
- CCPoint endPoint = pTouch->getLocation();
-
- CCSprite* back = (CCSprite*)this->getChildByTag(123);
- CCSprite* buttonSP = (CCSprite*)back->getChildByTag(321);
-
-
- CCPoint nodeBeganPoint = back->convertToNodeSpace(beganPoint);
- CCPoint nodeEndPoint = back->convertToNodeSpace(endPoint);
-
-
- if (buttonSP->boundingBox().containsPoint(nodeBeganPoint) && buttonSP->boundingBox().containsPoint(nodeEndPoint)) {
- CCLog("被点到了");
- }
- }
![](https://images2015.cnblogs.com/blog/784023/201511/784023-20151126160330999-1885408227.png)
-
convertToWorldSpace:把基于当前节点的本地坐标系下的坐标转换到世界坐标系中。
- void HelloWorld::myInit13()
- {
- CCSize size = CCDirector::sharedDirector()->getWinSize();
-
- CCSprite* sp1 = CCSprite::create("Icon.png");
- sp1->setPosition(ccp(size.width*0.5, size.height*0.5));
- this->addChild(sp1);
-
- CCSprite* sp2 = CCSprite::create("Icon.png");
- sp2->setColor(ccYELLOW);
- sp2->setPosition(ccp(sp1->getContentSize().width, sp1->getContentSize().height));
- sp1->addChild(sp2);
-
- CCSprite* sp3 = CCSprite::create("Icon.png");
- sp3->setColor(ccBLUE);
- sp3->setPosition(ccp(sp2->getContentSize().width, sp2->getContentSize().height));
- sp2->addChild(sp3);
-
-
- CCPoint worldPoint = sp3->convertToWorldSpace(sp3->getAnchorPointInPoints());
- CCLog("worldX == %f, worldY == %f",worldPoint.x,worldPoint.y);
-
-
- CCSprite* sp4 = CCSprite::create("Icon.png");
- sp4->setColor(ccGREEN);
- sp4->setPosition(worldPoint);
- this->addChild(sp4);
- }
posted @
2015-11-26 16:09
__Bruce
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