void bridge(struct Png *image, int x1, int y1, int x3, int y3, int width_pixel) {
    int x2 = x1, y2 = y3;
    int x4 = x3, y4 = y1;
    int new_width = sqrt((x4 - x1) * (x4 - x1) + (y4 - y1) * (y4 - y1));
    int new_height = sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
    png_byte **new_mas = (png_byte **) malloc(sizeof(png_byte * ) * new_height);
    for (int y = 0; y < new_height; y++)
        new_mas[y] = (png_byte *) malloc(sizeof(png_byte) * new_width * width_pixel);
    for (int y = y1; y < y2; y++) {
        png_byte *row = image->row_pointers[y];
        png_byte *new_row = new_mas[y - y1];
        for (int x = x1; x < x4; x++) {
            png_byte *ptr = &(row[x * width_pixel]);
            png_byte *new_ptr = &(new_row[(x - x1) * width_pixel]);
            new_ptr[0] = ptr[0];
            new_ptr[1] = ptr[1];
            new_ptr[2] = ptr[2];
        }
    }
    for (int y = 0; y < image->height; y++) {
        png_byte *row = image->row_pointers[y];
        png_byte *new_row = new_mas[y%new_height];
        for (int x = 0; x < image->width; x++) {
            png_byte *ptr = &(row[x * width_pixel]);
            png_byte *new_ptr = &(new_row[(x % new_width) * width_pixel]);
            ptr[0] = new_ptr[0];
            ptr[1] = new_ptr[1];
            ptr[2] = new_ptr[2];
        }
    }
}