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把图片切成小片(IOS)

2024-10-24 10:25:02   209人阅读

把图片切成小片(IOS)

by 伍雪颖

技术分享

#import <Foundation/Foundation.h>
#import <AppKit/AppKit.h>

int main(int argc, const char * argv[]) {
    @autoreleasepool{
        if (argc < 2) {
            return0;
        }
        NSString*inputFile = [NSStringstringWithCString:argv[1]encoding:NSUTF8StringEncoding];
        CGFloattitleSize = 256;
        NSString*outputPath = [inputFile stringByDeletingPathExtension];
       
        NSImage*image = [[NSImagealloc]initWithContentsOfFile:inputFile];
        NSSizesize = [image size];
        NSArray*representations = [image representations];
        if ([representations count]) {
            NSBitmapImageRep*representation = representations[0];
            size.width= [representation pixelsWide];
            size.height= [representation pixelsHigh];
        }
        NSRectrect = NSMakeRect(0,0, size.width, size.height);
        CGImageRefimageRef = [image CGImageForProposedRect:&rect context:NULLhints:nil];
       
        NSIntegerrows = ceil(size.height/titleSize);
        NSIntegercols = ceil(size.width/titleSize);
       
        for (int y =0;y<rows;++y) {
            for(intx=0;x<cols;++x) {
                CGRecttitleRect = CGRectMake(x*titleSize, y*titleSize, titleSize, titleSize);
                CGImageReftitleImage = CGImageCreateWithImageInRect(imageRef, titleRect);
               
                NSBitmapImageRep*imageRep = [[NSBitmapImageRepalloc]initWithCGImage:titleImage];
                NSData*data = http://www.mamicode.com/[imageRep representationUsingType:NSJPEGFileTypeproperties:nil];
                CGImageRelease(titleImage);
               
                NSString*path = [outputPath stringByAppendingFormat:@"_%02i_%02i.jpg",x,y];
                [data writeToFile:path atomically:NO];
            }
        }
    }
    return 0;
}

终端运行:
./CutImageAPP 1.jpg

把图片切成小片(IOS)


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