把圖片切成小片(IOS)

把圖片切成小片(IOS)
把圖片切成小片(IOS) 

#import #import

int main(int argc, const char * argv[]) {
@autoreleasepool {
if (argc < 2) {
return 0;
}
NSString *inputFile = [NSString stringWithCString:argv[1] encoding:NSUTF8StringEncoding];
CGFloat titleSize = 256;
NSString *outputPath = [inputFile stringByDeletingPathExtension];

NSImage *image = [[NSImage alloc] initWithContentsOfFile:inputFile];
NSSize size = [image size];
NSArray *representations = [image representations];
if ([representations count]) {
NSBitmapImageRep *representation = representations[0];
size.width = [representation pixelsWide];
size.height = [representation pixelsHigh];
}
NSRect rect = NSMakeRect(0, 0, size.width, size.height);
CGImageRef imageRef = [image CGImageForProposedRect:&rect context:NULL hints:nil];

NSInteger rows = ceil(size.height/titleSize);
NSInteger cols = ceil(size.width/titleSize);

for (int y =0;y for (int x=0;x CGRect titleRect = CGRectMake(x*titleSize, y*titleSize, titleSize, titleSize);
CGImageRef titleImage = CGImageCreateWithImageInRect(imageRef, titleRect);

NSBitmapImageRep *imageRep = [[NSBitmapImageRep alloc] initWithCGImage:titleImage];
NSData *data = [imageRep representationUsingType:NSJPEGFileType properties:nil];
CGImageRelease(titleImage);

NSString *path = [outputPath stringByAppendingFormat:@_%02i_%02i.jpg,x,y];
[data writeToFile:path atomically:NO];
}
}
}
return 0; }
終端運行: ./CutImageAPP 1.jpg