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2013-08-31T13:16:30.973
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2013-08-31T17:51:21.380
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To create a stroke: <pre><code>-(CCRenderTexture*) createStroke: (CCLabelTTF*) label size:(float)size color:(ccColor3B)cor { CCRenderTexture* rt = [CCRenderTexture renderTextureWithWidth:label.texture.contentSize.width+size*2 height:label.texture.contentSize.height+size*2]; CGPoint originalPos = [label position]; ccColor3B originalColor = [label color]; BOOL originalVisibility = [label visible]; [label setColor:cor]; [label setVisible:YES]; ccBlendFunc originalBlend = [label blendFunc]; [label setBlendFunc:(ccBlendFunc) { GL_SRC_ALPHA, GL_ONE }]; CGPoint bottomLeft = ccp(label.texture.contentSize.width * label.anchorPoint.x + size, label.texture.contentSize.height * label.anchorPoint.y + size); //CGPoint positionOffset = ccp(label.texture.contentSize.width * label.anchorPoint.x - label.texture.contentSize.width/2,label.texture.contentSize.height * label.anchorPoint.y - label.texture.contentSize.height/2); //use this for adding stoke to its self... CGPoint positionOffset= ccp(-label.contentSize.width/2,-label.contentSize.height/2); CGPoint position = ccpSub(originalPos, positionOffset); [rt begin]; for (int i=0; i<360; i+=60) // you should optimize that for your needs { [label setPosition:ccp(bottomLeft.x + sin(CC_DEGREES_TO_RADIANS(i))*size, bottomLeft.y + cos(CC_DEGREES_TO_RADIANS(i))*size)]; [label visit]; } [rt end]; [[[rt sprite] texture] setAntiAliasTexParameters];//THIS [label setPosition:originalPos]; [label setColor:originalColor]; [label setBlendFunc:originalBlend]; [label setVisible:originalVisibility]; [rt setPosition:position]; return rt; } </code></pre> Usage: <pre><code>CCRenderTexture* myStroke = [self createStroke:myCCLabelTTF size:myStrokeSize color:ccYELLOW]; [myCCLabelTTF addChild:myStroke z:-1 tag:kTagStroke]; </code></pre> And to increase smoothness, modify the following function to fit your needs (decrease the +60 increment to perhaps +30). Just note that the more iterations, the more more time spent rendering, which will negatively affect performance: <pre><code>for (int i=0; i<360; i+=60) // you should optimize that for your needs { [label setPosition:ccp(bottomLeft.x + sin(CC_DEGREES_TO_RADIANS(i))*size, bottomLeft.y + cos(CC_DEGREES_TO_RADIANS(i))*size)]; [label visit]; } </code></pre>
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1. POHow to create a stroke on a CCLabelTTF
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1. USLorenzo Linarducci
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1. USLorenzo Linarducci
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