#include "cv.h"
#include "highgui.h"
#include "math.h"
#include<stdio.h>
int main( int argc, char** argv )
{ 
IplImage* src; 
/* the first command line parameter must be image file name */ 
if( (src = cvLoadImage(".\1q.png", -1))) 
{ 
  printf("sdfs");
  IplImage* dst = cvCloneImage( src );
  int  delta = 1;
  int  angle = 0;   
  int opt = 0;   
// 1： 旋转加缩放                    
   // 0:  仅仅旋转      
  double factor;      
  cvNamedWindow( "src", 1 );
  cvShowImage( "src", src );
  for(;;)  
{ 
  float m[6];         
   // Matrix m looks like:                 
  // [ m0  m1  m2 ] ===>  [ A11  A12   b1 ]          
  // [ m3  m4  m5 ]       [ A21  A22   b2 ]        
  //    CvMat M = cvMat( 2, 3, CV_32F, m ); 
  int w = src->width; 
  int h = src->height;
   if(opt) // 旋转加缩放            
    factor = (cos(angle*CV_PI/180.) + 1.05)*2;       
   else //  仅仅旋转             
   factor = 1; 
  m[0] = (float)(factor*cos(-angle*2*CV_PI/180.)); 
  m[1] = (float)(factor*sin(-angle*2*CV_PI/180.));
   m[3] = -m[1];   m[4] = m[0];   // 将旋转中心移至图像中间          
  m[2] = w*0.5f;   
  m[5] = h*0.5f;            
  //  dst(x,y) = A * src(x,y) + b  
 cvGetQuadrangleSubPix( src, dst, &M); 
  cvNamedWindow( "dst", 1 ); 
  cvShowImage( "dst", dst );  
 if( cvWaitKey(85) == 27 )  
  break;  
 angle =(int) (angle /*+ delta*/) % 360;  
} // for-loop
 }
 return 0;
}
//javascript/6834