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POFlipped NSString drawing in CGContext
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copied!<p>I try to draw a string in this texture:</p> <p><a href="http://picasaweb.google.it/lh/photo/LkYWBv_S_9v2d6BAfbrhag?feat=directlink" rel="nofollow noreferrer">http://picasaweb.google.it/lh/photo/LkYWBv_S_9v2d6BAfbrhag?feat=directlink</a></p> <p>but the green numbers seem vertical flipped. I've created my context in this way:</p> <pre><code> colorSpace = CGColorSpaceCreateDeviceRGB(); data = malloc(height * width * 4); context = CGBitmapContextCreate(data, width, height, 8, 4 * width, colorSpace, kCGImageAlphaPremultipliedLast | kCGBitmapByteOrder32Big); </code></pre> <p>and i've draw the strings:</p> <pre><code> UIGraphicsPushContext(context); for(int i=0;i<packs.size();++i) { CGPoint points[4] = { gltextures[i].texCoords[0] * size.width, //0 gltextures[i].texCoords[1] * size.height, //1 gltextures[i].texCoords[2] * size.width, //2 gltextures[i].texCoords[3] * size.height, //3 gltextures[i].texCoords[4] * size.width, //4 gltextures[i].texCoords[5] * size.height, //5 gltextures[i].texCoords[6] * size.width, //6 gltextures[i].texCoords[7] * size.height //7 }; CGRect debugRect = CGRectMake ( gltextures[i].texCoords[0] * size.width, gltextures[i].texCoords[1] * size.height, gltextures[i].width, gltextures[i].height ); CGContextSetStrokeColorWithColor(context, [[UIColor redColor] CGColor]); CGContextAddLines(context, points, 4); CGContextClosePath(context); CGContextDrawPath(context, kCGPathStroke); NSString* s = [NSString stringWithFormat:@"%d",gltextures[i].texID]; UIFont* font = [UIFont fontWithName:@"Arial" size:12]; CGContextSetRGBFillColor(context, 0, 1, 0, 1); [s drawAtPoint:points[0] withFont:font]; } UIGraphicsPopContext(); </code></pre> <p>The transformation matrix seems the Identity matrix... no CGAffineTransform is applied to THIS context. If the string is flipped, maybe, all my images are flipped! Any suggestion?</p> <p>PS: sorry for my english ;)</p>

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