Cocos-2dx精灵部分变灰

概述CCSprite* CCSpotLight::makeSpiteGray(CCSprite* changeSprite){ CCRenderTexture *render = CCRenderTexture::create(changeSprite->getContentSize().width, changeSprite->getContentSize().height,kCCTexture

CCSprite* CCSpotlight::makeSpiteGray(CCSprite* changeSprite){	CCRenderTexture *render = CCRenderTexture::create(changeSprite->getContentSize().wIDth,changeSprite->getContentSize().height,kCCTexture2DPixelFormat_RGBA8888);	render->beginWithClear(0.0f,0.0f,0.0f);	changeSprite->visit();	render->end();	//CCDirector::getInstance()->getRenderer()->render();	CCImage *finalimage = render->newCCImage();	unsigned char *pData = finalimage->getData();	int iIndex = 0;	for (int i = 0; i < finalimage->getHeight(); i ++)	{		if (i >= 100 && i < 200)			continue;		for (int j = 0; j < finalimage->getWIDth(); j ++)		{			if (j >= 50 && j < 100)				continue;			// gray			int iBPos = iIndex;			unsigned int iB = pData[iIndex];			iIndex ++;			unsigned int iG = pData[iIndex];			iIndex ++;			unsigned int iR = pData[iIndex];			iIndex ++;			iIndex ++;			unsigned int iGray = 0.3 * iR + 0.6 * iG + 0.1 * iB;			pData[iBPos] = pData[iBPos + 1] = pData[iBPos + 2] = (unsigned char)iGray;		}	}	CCTexture2D *texture = new CCTexture2D;	texture->initWithImage(finalimage);	auto pSprite = CCSprite::createWithTexture(texture);	delete finalimage;	texture->release();	return pSprite;}

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