cocos2d实现CCLabelTTF真正字体描边效果

Cocos2d-x 前端之家
前端之家收集整理的这篇文章主要介绍了cocos2d实现CCLabelTTF真正字体描边效果，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

在开发游戏中，我们需要在需要在游戏中显示一个字体轮廓比较清晰的效果，我们就需要给字体的周围进行描边，让字体显示比较更加突出，我重写了cclabelttf类，使它具有描边的特效，和描边的大小以及颜色。。。

开发人员:Jason's.Alex QQ:531401335

csdn博客:http://blog.csdn.net/RuShrooM
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[cpp] view plain copy
  1. #include"cocos2d.h"
  2. usingnamespacecocos2d;
  4. classStrokeLabelTTF:publiccocos2d::CCNode
  5. {
  6. public:
  7. StrokeLabelTTF();
  8. ~StrokeLabelTTF();
  10. public:
  11. staticStrokeLabelTTF*create(constchar*string,constchar*fontName,floatfontSize,floatstrokeSize,constcocos2d::ccColor3B&colStroke=cocos2d::ccc3(0,0),cocos2d::CCTextAlignmenthAlignment=cocos2d::kCCTextAlignmentCenter,cocos2d::CCVerticalTextAlignmentvAlignment=cocos2d::kCCVerticalTextAlignmentTop);
  12. boolinitWithString(constchar*label,floatfStrokeSize,constcocos2d::ccColor3B&colStroke,cocos2d::CCTextAlignmenthAlignment,cocos2d::CCVerticalTextAlignmentvAlignment);
  14. staticStrokeLabelTTF*create(constchar*string,floatfontSize);
  16. public:
  17. voidsetColor(constcocos2d::ccColor3B&color3);
  18. voidsetString(constchar*label);
  19. voidsetStrokeColor(cocos2d::ccColor3Bcol){m_colStroke=col;updateStroke();}
  20. voidsetStrokeSize(floatStrokeSize){m_fStrokeSize=StrokeSize;updateStroke();}
  21. voidsetAnchorPoint(constcocos2d::CCPoint&anchorPoint);
  24. protected:
  25. voidupdateStroke();
  27. private:
  28. floatm_fStrokeSize;
  29. cocos2d::ccColor3Bm_colStroke;
  30. cocos2d::CCSprite*m_sprite;
  31. cocos2d::CCLabelTTF*m_label;
  32. CCPointanchorPoint;
  33. };

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[cpp] view plain copy
  1. #include"StrokeLabelTTF.h"
  2. USING_NS_CC;
  3. StrokeLabelTTF::StrokeLabelTTF()
  4. :m_colStroke(ccc3(0,0))
  5. ,m_fStrokeSize(1.0f)
  6. ,m_sprite(NULL)
  7. ,m_label(NULL)
  8. ,anchorPoint(0.5,0.5)
  9. {}
  10. StrokeLabelTTF::~StrokeLabelTTF()
  11. {
  12. CC_SAFE_RELEASE_NULL(m_label);
  13. }
  14. boolStrokeLabelTTF::initWithString(constchar*string,CCTextAlignmenthAlignment,CCVerticalTextAlignmentvAlignment)
  15. {
  16. m_fStrokeSize=strokeSize;
  17. m_colStroke=colStroke;
  18. m_label=CCLabelTTF::create(string,fontName,fontSize,CCSizeZero,hAlignment,vAlignment);
  19. m_label->retain();
  21. updateStroke();
  23. returntrue;
  24. }
  25. StrokeLabelTTF*StrokeLabelTTF::create(constchar*string,CCVerticalTextAlignmentvAlignment)
  26. {
  27. StrokeLabelTTF*pRet=newStrokeLabelTTF();
  28. if(pRet&&pRet->initWithString(string,fStrokeSize,colStroke,vAlignment))
  29. {
  30. pRet->autorelease();
  31. returnpRet;
  32. }
  33. CC_SAFE_DELETE(pRet);
  34. returnNULL;
  35. }
  37. StrokeLabelTTF*StrokeLabelTTF::create(constchar*string,floatfontSize)
  38. {
  39. StrokeLabelTTF*pRet=newStrokeLabelTTF();
  41. if(pRet&&pRet->initWithString(string,1.5,ccc3(0,kCCTextAlignmentCenter,kCCVerticalTextAlignmentTop))
  42. {
  43. pRet->autorelease();
  44. returnpRet;
  45. }
  47. CC_SAFE_DELETE(pRet);
  48. returnNULL;
  50. }
  52. voidStrokeLabelTTF::updateStroke()
  53. {
  54. if(m_sprite)
  55. {
  56. removeChild(m_sprite,true);
  57. }
  59. CCSizetextureSize=m_label->getContentSize();
  60. textureSize.width+=2*m_fStrokeSize;
  61. textureSize.height+=2*m_fStrokeSize;
  62. //calltoclearerror
  63. glGetError();
  64. CCRenderTexture*rt=CCRenderTexture::create(textureSize.width,textureSize.height);
  65. if(!rt)
  66. {
  67. CCLOG("createrendertextureFailed!!!!");
  68. addChild(m_label);
  69. return;
  70. }
  72. ccColor3Bcol=m_label->getColor();
  73. m_label->setColor(m_colStroke);
  75. ccBlendFuncoriginalBlend=m_label->getBlendFunc();
  76. ccBlendFuncfunc={GL_SRC_ALPHA,GL_ONE};
  77. m_label->setBlendFunc(func);
  79. m_label->setAnchorPoint(ccp(0.5f,0.5f));
  81. rt->begin();
  82. for(inti=0;i<360;i+=15)
  83. {
  84. floatr=CC_DEGREES_TO_RADIANS(i);
  85. m_label->setPosition(ccp(
  86. textureSize.width*0.5f+sin(r)*m_fStrokeSize,
  87. textureSize.height*0.5f+cos(r)*m_fStrokeSize));
  88. m_label->visit();
  89. }
  91. m_label->setColor(col);
  92. m_label->setBlendFunc(originalBlend);
  93. m_label->setPosition(ccp(textureSize.width*0.5f,textureSize.height*0.5f));
  94. m_label->visit();
  95. rt->end();
  97. CCTexture2D*texture=rt->getSprite()->getTexture();
  98. texture->setAliasTexParameters();
  99. m_sprite=CCSprite::createWithTexture(rt->getSprite()->getTexture());
  100. setContentSize(m_sprite->getContentSize());
  101. m_sprite->setAnchorPoint(this->anchorPoint);//------------
  102. m_sprite->setPosition(ccp(0,0));
  103. ((CCSprite*)m_sprite)->setFlipY(true);
  104. addChild(m_sprite);
  105. }
  106. voidStrokeLabelTTF::setString(constchar*label)
  107. {
  108. if(m_label)
  109. {
  110. if(0!=strcmp(label,m_label->getString()))
  111. {
  112. m_label->setString(label);
  113. updateStroke();
  114. }
  115. }
  116. else
  117. {
  118. CCLOG("ERROR:CCLabelTTFStroke::setStringm_label=NULL");
  119. }
  120. }
  121. voidStrokeLabelTTF::setColor(constccColor3B&color3)
  122. {
  123. if(m_label)
  124. {
  125. ccColor3Bcol=m_label->getColor();
  126. if(color3.r!=col.r||color3.g!=col.g||color3.b!=col.b)
  127. {
  128. m_label->setColor(color3);
  129. updateStroke();
  130. }
  131. }
  132. else
  133. {
  134. CCLOG("ERROR:CCLabelTTFStroke::setColorm_label=NULL");
  135. }
  136. }
  138. voidStrokeLabelTTF::setAnchorPoint(constcocos2d::CCPoint&anchorPoint1)
  139. {
  141. this->anchorPoint=anchorPoint1;
  142. updateStroke();
  143. }

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