请问这个代码应该怎么修改？？？

[shiter]

/* use imRef to access image data. */
#define imRef(im, x, y) (((uchar *)(im->data+y*im->w))[x])


static image<rgb> *imageGRAYtoRGB(image<uchar> *input)
{
  int width = input->width();
  int height = input->height();
  image<rgb> *output = new image<rgb>(width, height, false);

  for (int y = 0; y < height; y++)
  {
    for (int x = 0; x < width; x++)
	{
     imRef(output, x, y).r = imRef(input, x, y);//这里报错
      //imRef(output, x, y).g = imRef(input, x, y);
      //imRef(output, x, y).b = imRef(input, x, y);
    }
  }


报错：


error C2228: “.r”的左边必须有类/结构/联合

[shiter]

template <class T>
class image
{
 public:
 /* create an image */
 image(const int width, const int height, const bool init = true);
 /* delete an image */
 ~image();
  /* init an image */
  void init(const T &val);
 /* copy an image */
  image<T> *copy() const;

//  /* get the width of an image. */
  int width() const { return w; }
  
//  /* get the height of an image. */
int height() const { return h; }
//  
 /* image data. */
  T *data;
//  
//  /* row pointers. */
  T **access;
//  
  public:
  int w, h;
};

/* use imRef to access image data. */
#define imRef(im, x, y) (((uchar *)(im->data+y*im->w))[x])
  
/* use imPtr to get pointer to image data. */
#define imPtr(im, x, y) &(((uchar *)(im->data+y*im->w))[x])

template <class T>
image<T>::image(const int width, const int height, const bool init)
{
 w = width;
 h = height;
 data = new T[w * h];  // allocate space for image data
 access = new T*[h];   // allocate space for row pointers

// initialize row pointers
 for (int i = 0; i < h; i++)
  access[i] = data + (i * w);  

  if (init)
    memset(data, 0, w * h * sizeof(T));
}


template <class T>
image<T>::~image()
{
  delete [] data; 
delete [] access;
}
template <class T>
void image<T>::init(const T &val) 
{
  T *ptr = imPtr(this, 0, 0);
  T *end = imPtr(this, w-1, h-1);
  while (ptr <= end)
    *ptr++ = val;
}
template <class T>
image<T> *image<T>::copy() const
{
  image<T> *im = new image<T>(w, h, false);
  memcpy(im->data, data, w * h * sizeof(T));
  return im;
}

[shiter]

[shiter]

求指导啊，各位大牛。。。

[赵4老师]

rgb的定义在哪里？

[赵4老师]

编译选项加/EP /P，重新编译，查看宏展开后对应的.i文件。gcc加-E

[千树之影]

#define imRef(im, x, y) (((uchar *)(im->data+y*im->w))[x]) ---->#define imRef(im, x, y) (((rgb *)(im->data+y*im->w))[x])

[shiter]

引用 9 楼 mujiok2003 的回复:

引用

#define imRef(im, x, y) (((uchar *)(im->data+y*im->w))[x])

换成内联函数函数吧,让你的日子好过点。

请问一下怎么改呢，谢谢大牛

[shiter]

引用 4 楼 zhao4zhong1 的回复:

rgb的定义在哪里？

typedef unsigned char uchar;

typedef unsigned char uchar;
typedef struct 
{ 
	uchar r, g, b;
} rgb;

求指导！！！

[赵4老师]

试试看，不保证对：

for (int y = 0; y < height; y++)
  {
    for (int x = 0; x < width; x++)
    {
     ((rgb *)imPtr(output, x, y))->r = imRef(input, x, y);
     ((rgb *)imPtr(output, x, y))->g = imRef(input, x, y);
     ((rgb *)imPtr(output, x, y))->b = imRef(input, x, y);
    }
  }

[mujiok2003]

引用

#define imRef(im, x, y) (((uchar *)(im->data+y*im->w))[x])

换成内联函数函数吧,让你的日子好过点。