cocos2dx 描上边框

Sprite描上边框

static CCRenderTexture* createStroke(CCSprite* label, int size, ccColor3B color, GLubyte opacity){        CCRenderTexture* rt = CCRenderTexture::create(label->getTexture()->getContentSize().width + size * 2,                                                      label->getTexture()->getContentSize().height+size * 2);        CCPoint originalPos = label->getPosition();        ccColor3B originalColor = label->getColor();        GLubyte originalOpacity = label->getOpacity();        label->setColor(color);        label->setOpacity(opacity);        bool originalVisibility = label->isVisible();        ccBlendFunc originalBlend = label->getBlendFunc();        ccBlendFunc bf = {GL_SRC_ALPHA, GL_ONE};        label->setBlendFunc(bf);        CCPoint bottomLeft = ccp(                                 label->getTexture()->getContentSize().width * label->getAnchorPoint().x + size,                                 label->getTexture()->getContentSize().height * label->getAnchorPoint().y + size);        //原來沒有判斷AnchorPoint的寫法        //  CCPoint positionOffset= ccp(   - label->getTexture()->getContentSize().width / 2,        //                                  - label->getTexture()->getContentSize().height / 2);        //SetAnchorPoint會影響到positionOffset，所以要做判斷        CCPoint positionOffset = CCPointZero;        if(label->getAnchorPoint().x == 0.5f){            positionOffset.x = 0;        }else if(label->getAnchorPoint().x == 0.0f){            positionOffset.x =- label->getTexture()->getContentSize().width / 2;        }else{            positionOffset.x = label->getTexture()->getContentSize().width/2;        }        if(label->getAnchorPoint().y == 0.5f){            positionOffset.y = 0;        }else if(label->getAnchorPoint().y == 0.0f){            positionOffset.y =- label->getTexture()->getContentSize().height / 2;        }else{            positionOffset.y =  label->getTexture()->getContentSize().height/2;        }        CCPoint position = ccpSub(originalPos, positionOffset);        rt->begin();        for (int i=0; i<360 data-blogger-escaped-for="" data-blogger-escaped-i="" data-blogger-escaped-label-="" data-blogger-escaped-needs="" data-blogger-escaped-optimize="" data-blogger-escaped-should="" data-blogger-escaped-that="" data-blogger-escaped-you="" data-blogger-escaped-your="">setPosition(                               ccp(bottomLeft.x + sin(CC_DEGREES_TO_RADIANS(i))*size, bottomLeft.y + cos(CC_DEGREES_TO_RADIANS(i))*size)                               );            label->visit();        }        rt->end();        label->setPosition(originalPos);        label->setColor(originalColor);        label->setBlendFunc(originalBlend);        label->setVisible(originalVisibility);        label->setOpacity(originalOpacity);        rt->setPosition(position);        //反踞齒        rt->getSprite()->getTexture()->setAntiAliasTexParameters();        return rt;    }