Cocos2d-x学习笔记之CCScene、CCLayer、CCSprite的默认坐标和默认锚点实验

bool HelloWorld::init()
{
  bool bRet = false;
  do
  {
    CC_BREAK_IF(! CCLayer::init());

		CCSprite * sprite = CCSprite::create("image1.png");

		this->addChild(sprite);

		//获得CCSprite的默认坐标，CCSprite设置坐标的时候是用自己的锚点位置占据在坐标上的。
		CCLog("CCSprite.x=%f,CCSprite.y=%f",sprite->getPosition().x,sprite->getPosition().y);

		//获得CCSprite的默认锚点
		CCLog("sprite1Anchor.x=%f,sprite1Anchor.y=%f",sprite->getAnchorPoint().x,sprite->getAnchorPoint().y);

		//获得CCLayer的默认坐标
		CCLog("CCLayer.x=%f,CCLayer.y=%f",this->getPosition().x,this->getPosition().y);

		//获得CCLayer的默认锚点
		CCPoint point = this->getAnchorPoint();
		CCLog("layerAnchor.x=%f,layerAnchor.y=%f",point.x,point.y);

    bRet = true;
  } while (0);

  return bRet;
}

CCScene* HelloWorld::scene()
{
  CCScene * scene = NULL;
  do
  {
    // 'scene' is an autorelease object
    scene = CCScene::create();
    CC_BREAK_IF(! scene);

    // 'layer' is an autorelease object
    HelloWorld *layer = HelloWorld::create();
    CC_BREAK_IF(! layer);

    // add layer as a child to scene
    scene->addChild(layer);
		layer->show();
  } while (0);

  // return the scene
  return scene;
}

void HelloWorld::show()
{
	//获得CCScene的默认坐标
	CCScene * scene = (CCScene *)this->getParent();
	CCLog("CCScene.x=%f,CCScene.y=%f",scene->getPosition().x,scene->getPosition().y);

	//获得CCScene的默认锚点
	CCPoint point = scene->getAnchorPoint();
	CCLog("SceneAnchor.x=%f,SceneAnchor.y=%f",point.x,point.y);
}