cocos2dx-截取屏幕一部分

概述Image::Format format=Image::Format::PNG; auto origin=Director::getInstance()->getVisibleOrigin(); auto visibleSize=Director::getInstance()->getVisibleSize(); RenderTexture *renderTexture =

    Image::Format format=Image::Format::PNG;    auto origin=Director::getInstance()->getVisibleOrigin();    auto visibleSize=Director::getInstance()->getVisibleSize();    RenderTexture *renderTexture = RenderTexture::create(visibleSize.wIDth*0.5,visibleSize.height*0.5,Texture2D::PixelFormat::RGBA8888);    Rect fullRect=Rect(origin.x,origin.y,visibleSize.wIDth*0.5,visibleSize.height*0.5);    Rect virtualVIEwPort=Rect(visibleSize.wIDth*0.25,visibleSize.height*0.25,visibleSize.height*0.5);    //抓取屏幕部分内容保存为纹理。 rtBegin: renderTexture在整个屏幕上的起始位置。 fullRect: 整个屏幕的大小 fullVIEwport: 整个vIEwport的大小。    renderTexture->setVirtualVIEwport(Point(visibleSize.wIDth*0.25,visibleSize.height*0.25),fullRect,virtualVIEwPort);    renderTexture->beginWithClear(0.0f,0.0f,0.0f);    Director::getInstance()->getRunningScene()->visit();    renderTexture->end();    renderTexture->savetofile("happy.png",format);

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