自定义平移函数使用CImage类实现

// 自定义平移函数，供调用   lilizong-copyright-2012-8-5
  bool CDIGTLSView::myTransform( int x, int y)
  {
    //return false;
    if(myImage1.IsNull())
      OnOpenResourceFile();
    if(myImage2.IsNull()){
      //myImage2.Destroy();
      myImage2.Create(myImage1.GetWidth(),myImage1.GetHeight(),24,0);
    }
    COLORREF pixel; 
    int maxY = myImage1.GetHeight();
    int maxX=myImage1.GetWidth();
    int r,g,b,avg; 
    double c;
    byte* pRealData;
    byte* pRealData2;
    pRealData=(byte*)myImage1.GetBits();
    pRealData2=(byte*)myImage2.GetBits();
    int pit=myImage1.GetPitch();
    int pit2=myImage2.GetPitch();
    //需要注意,pit和pit2的值并不一样,所以如果使用一个值,会导致不同的结果出现
    //CString str;
    //str.Format(TEXT("%d"),pit);
    //MessageBox(str);
    //str.Format(TEXT("%d"),pit2);
    //MessageBox(str);
    int bitCount=myImage1.GetBPP()/8;
    int bitCount2=myImage2.GetBPP()/8;
    //CString str;
    //str.Format(TEXT("%d"),bitCount);
    //MessageBox(str);
    //str.Format(TEXT("%d"),bitCount2);
    //MessageBox(str);
    int newValue;
    int tempR,tempG,tempB;
    int key1,key2;  //用来控制方向
    //srand((unsigned)time(NULL)); 
    //key1=rand()%100;
    //key2=rand()%100;
    //if(key1>50)
    //  key1=-1;
    //else
    //  key1=1;
    //if(key2<50)
    //  key2=1;
    //else
    //  key2=-1;
    //int xTrans=key1*rand()%(int)(maxX/1.5)+1;
    //int yTrans=key2*rand()%(int)(maxY/1.5)+1;
    int xTrans=x;
    int yTrans=y;
    //说明：将生产的图像作为24位图处理。
    for (int y=0; y<maxY; y++) {
      for (int x=0; x<maxX; x++) {
        if((y-yTrans>=0)&&(y-yTrans+2<=maxY)&&(x-xTrans>=0)&&(x-xTrans+2<=maxX))
        {
          tempR=(int)(int)(*(pRealData+pit*(y-yTrans)+(x-xTrans)*bitCount));
          if(bitCount==1)
          {tempG=tempR;
          tempB=tempR;}
          else
          {

            tempG=(int)(int)(*(pRealData+pit*(y-yTrans)+(x-xTrans)*bitCount+1));
            tempB=(int)(int)(*(pRealData+pit*(y-yTrans)+(x-xTrans)*bitCount+2));
          }
        }
        else
        {
          tempR=255;
          tempG=0;
          tempB=0;
        }
        *(pRealData2+pit2*y+x*bitCount2)=tempR;
        *(pRealData2+pit2*y+x*bitCount2+1)=tempG;
        *(pRealData2+pit2*y+x*bitCount2+2)=tempB;
      }
    }
    Invalidate();
    return true;
  }