镜像+ iphone

Question

我想在iPhone应用程序中使用一种功能，将图像转换为镜像。

就像左手上有男人的形象一样，转换后的图像必须和右手同一个男人。

任何代码或链接都会非常感激

提前感谢您的帮助。

Answer 1

你可以试试这个

myImageView.transform = CGAffineTransformMake(-1,0,0,1,0,0);

抱歉，我无法提供更多帮助。不久之前我用这个水平翻转UIView，所以我对细节有点生气。

Answer 2

myView.transform = CGAffineTransformMake(-1,0,0,-1,0,0);

Answer 3

// convert CIImage to unsigned char*
NSBitmapImageRep * bitRep = [[NSBitmapImageRep alloc] initWithCIImage:sourceImage];
unsigned char * pixels = (unsigned char *)[bitRep bitmapData];

// find mirrored pixel, for 1D pixels array
// for 2D array it will be something like:
// pixels2D[x,y] = pixels2D[Image.width-1-x,y]

// convert modified unsigned char* back to CIImage
CGColorSpaceRef colorSpaceToUse = CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB);
NSData *_pixelsData = [NSData dataWithBytesNoCopy:pixels length:(sizeof(unsigned char)*4*Image.Width*Image.Height) freeWhenDone:YES ];
CIImage *_dataCIImage = [[[CIImage alloc] initWithBitmapData:_pixelsData bytesPerRow:(Image.Width*4*sizeof(unsigned char)) size:CGSizeMake(Image.Width,Image.Height) format:kCIFormatARGB8 colorSpace:colorSpaceToUse] autorelease];