c++ 배열 image in-place로 rotate 하기

코드 >>

#include <iostream>
#include <vector>
 
 
int xsize = 4;
int ysize = 4;
 
typedef struct
{
    int x;
    int y;
} coordXY;
 
coordXY getcoordXY(coordXY BeforeXY)
{
    coordXY newcoordXY;
    newcoordXY.x = ysize - BeforeXY.y -1;
    newcoordXY.y = BeforeXY.x;
    return newcoordXY;
};
 
std::vector<std::vector<int>> inplaceRotateImage(std::vector<std::vector<int>>& image)
{
    coordXY rot90;
    coordXY rot180;
    coordXY rot270;
    for (int y=0; y<(ysize+1)/2; y++)
    {
        for (int x=0; x<(xsize/2); x++)
        {
            coordXY org;
            org.x = x;
            org.y = y;
            
            int temp0 = image[y][x];
            
            rot90 = getcoordXY(org);
            rot180 = getcoordXY(rot90);
            rot270 = getcoordXY(rot180);
 
            image[y][x] = image[rot270.y][rot270.x];
            image[rot270.y][rot270.x] = image[rot180.y][rot180.x];
            image[rot180.y][rot180.x] = image[rot90.y][rot90.x];
            image[rot90.y][rot90.x] = temp0;
            
        }
    }
    return image;
}
 
int main()
{
    //[1, 2, 3, 4]      =>       [13, 9, 5, 1] 
    //[5, 6, 7, 8]      =>       [14, 10, 6, 2]
    //[9, 10, 11, 12]   =>       [15, 11, 7, 3]
    //[13, 14, 15, 16]  =>       [16, 12, 8, 4]
    coordXY testcoor;
    testcoor.x = 10;
    testcoor.y = 12;
    
    std::cout << "testcoor.x : " << testcoor.x << " testcoor.y : " << testcoor.y << std::endl;
    std::vector<std::vector<int>> image;
    image.emplace_back(std::vector<int>{1,2,3,4});
    image.emplace_back(std::vector<int>{5,6,7,8});
    image.emplace_back(std::vector<int>{9,10,11,12});
    image.emplace_back(std::vector<int>{13,14,15,16});
    image = inplaceRotateImage(image);
    
    for (const auto& image_array : image)
    {
        for (const auto& image_element : image_array)
        {
            std::cout << image_element << " ";
        }
        std::cout << std::endl;
    }
    std::cout<<"Hello World";
 
    return 0;
}