cocos2d-x字体描边Label-创新互联
参考http://blog.sina.com.cn/s/blog_a502f1a30101hvh7.html
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#include "cocos2d.h" class CCLabelTTFStroke : public cocos2d::CCNode { public: CCLabelTTFStroke(); ~CCLabelTTFStroke(); public: static CCLabelTTFStroke* create(const char *string, const char *fontName, float fontSize, float strokeSize,const cocos2d::ccColor3B& colStroke = cocos2d::ccc3(0, 0, 0), cocos2d::CCTextAlignment hAlignment=cocos2d::kCCTextAlignmentCenter, cocos2d::CCVerticalTextAlignment vAlignment=cocos2d::kCCVerticalTextAlignmentTop); bool initWithString(const char *label, const char *fontName, float fontSize, float fStrokeSize, const cocos2d::ccColor3B& colStroke, cocos2d::CCTextAlignment hAlignment, cocos2d::CCVerticalTextAlignment vAlignment); public: void setColor(const cocos2d::ccColor3B& color3); void setString(const char *label); void setStrokeColor(cocos2d::ccColor3B col){ m_colStroke = col; updateStroke(); } void setStrokeSize(float StrokeSize){ m_fStrokeSize = StrokeSize; updateStroke();} protected: void updateStroke(); private: float m_fStrokeSize; cocos2d::ccColor3B m_colStroke; cocos2d::CCSprite* m_sprite; cocos2d::CCLabelTTF* m_label; };
源文件
#include "CCStrokeLabel.h" USING_NS_CC; CCLabelTTFStroke::CCLabelTTFStroke() :m_colStroke(ccc3(0,0,0)) ,m_fStrokeSize(1.0f) ,m_sprite(NULL) ,m_label(NULL) {} CCLabelTTFStroke::~CCLabelTTFStroke() { CC_SAFE_RELEASE_NULL(m_label); } bool CCLabelTTFStroke::initWithString(const char *string, const char *fontName, float fontSize, float strokeSize,const cocos2d::ccColor3B& colStroke, CCTextAlignment hAlignment,CCVerticalTextAlignment vAlignment) { m_fStrokeSize = strokeSize; m_colStroke = colStroke; m_label = CCLabelTTF::create(string, fontName, fontSize, CCSizeZero,hAlignment,vAlignment); m_label->retain(); updateStroke(); return true; } CCLabelTTFStroke* CCLabelTTFStroke::create(const char *string, const char *fontName, float fontSize, float fStrokeSize,const cocos2d::ccColor3B& colStroke ,CCTextAlignment hAlignment,CCVerticalTextAlignment vAlignment) { CCLabelTTFStroke *pRet = new CCLabelTTFStroke(); if(pRet && pRet->initWithString(string, fontName, fontSize, fStrokeSize, colStroke, hAlignment, vAlignment)) { pRet->autorelease(); return pRet; } CC_SAFE_DELETE(pRet); return NULL; } void CCLabelTTFStroke::updateStroke() { if (m_sprite) { removeChild(m_sprite, true); } CCSize textureSize = m_label->getContentSize(); textureSize.width += 2 * m_fStrokeSize; textureSize.height += 2 * m_fStrokeSize; //call to clear error glGetError(); CCRenderTexture *rt = CCRenderTexture::create(textureSize.width, textureSize.height); if(!rt) { CCLOG("create render texture failed !!!!"); addChild(m_label); return; } ccColor3B col = m_label->getColor(); m_label->setColor(m_colStroke); ccBlendFunc originalBlend = m_label->getBlendFunc(); ccBlendFunc func = { GL_SRC_ALPHA, GL_ONE}; m_label->setBlendFunc(func); m_label->setAnchorPoint(ccp(0.5, 0.5)); rt->begin(); for(int i = 0; i < 360; i += 15) { float r = CC_DEGREES_TO_RADIANS(i); m_label->setPosition(ccp( textureSize.width * 0.5f + sin(r) * m_fStrokeSize, textureSize.height * 0.5f + cos(r) * m_fStrokeSize)); m_label->visit(); } m_label->setColor(col); m_label->setBlendFunc(originalBlend); m_label->setPosition(ccp(textureSize.width * 0.5f, textureSize.height * 0.5f)); m_label->visit(); rt->end(); CCTexture2D *texture = rt->getSprite()->getTexture(); texture->setAliasTexParameters(); m_sprite = CCSprite::createWithTexture(rt->getSprite()->getTexture()); setContentSize(m_sprite->getContentSize()); m_sprite->setAnchorPoint(ccp(0, 0)); m_sprite->setPosition(ccp(0, 0)); ((CCSprite *)m_sprite)->setFlipY(true); addChild(m_sprite); } void CCLabelTTFStroke::setString(const char *label) { if (m_label) { if(0!=strcmp(label, m_label->getString())) { m_label->setString(label); updateStroke(); } } else { CCLOG("ERROR:CCLabelTTFStroke::setString m_label=NULL"); } } void CCLabelTTFStroke::setColor(const ccColor3B& color3) { if (m_label) { ccColor3B col = m_label->getColor(); if(color3.r!=col.r && color3.g!=col.g && color3.b!=col.b) { m_label->setColor(color3); updateStroke(); } } else { CCLOG("ERROR:CCLabelTTFStroke::setColor m_label=NULL"); } }
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