#include "stdafx.h"

#include <opencv2\opencv.hpp>

#include <opencv\cv.h>

#include <iostream>

#include<string>

#include <windows.h>

using namespace std;

using namespace cv;

int _tmain(int argc, _TCHAR* argv[])

{

    IplImage *src = cvLoadImage("lena.jpg");

    IplImage *dst = ;

    /* the first command line parameter must be image file name */

    if (src != )

    {

        int delta = ;

        int angle = ;

        int opt =;        // 1： 旋转加缩放

        // 0:  仅仅旋转

        double factor;

        dst = cvCloneImage (src);

        cvNamedWindow ("src", );

        cvShowImage ("src", src);

        for (;;)

        {

            float m[];

            // Matrix m looks like:

            //

            // [ m0  m1  m2 ] ===>  [ A11  A12   b1 ]

            // [ m3  m4  m5 ]       [ A21  A22   b2 ]

            //

            CvMat M = cvMat (, , CV_32F, m);

            int w = src->width;

            int h = src->height;

            if (opt)        // 旋转加缩放

                factor = (cos (angle * CV_PI / .) + 1.0) * ;

            else            //  仅仅旋转

                factor = ;

            m[] = (float) (factor * cos (-angle *  * CV_PI / .));

            m[] = (float) (factor * sin (-angle *  * CV_PI / .));

            m[] = -m[];

            m[] = m[];

            // 将旋转中心移至图像中间

            m[] = w * 0.5f;

            m[] = h * 0.5f;

            //  dst(x,y) = A * src(x,y) + b

            cvZero (dst);

            cvGetQuadrangleSubPix (src, dst, &M);

            cvNamedWindow ("dst", );

            cvShowImage ("dst", dst);

            if (cvWaitKey () == )    //ESC

                break;

            angle = (int) (angle + delta) % ;

        }            // for-loop

    }

    return ;

}