affine_transform in C++

void affine_transform() {
	Mat src = loadim();


	Point2f srcPts[3], dstPts[3];
	srcPts[0] = Point2f(0, 0);
	srcPts[1] = Point2f(src.cols - 1, 0);
	srcPts[2] = Point2f(src.cols - 1, src.rows - 1);
	dstPts[0] = Point2f(50, 50);
	dstPts[1] = Point2f(src.cols - 100, 100);
	dstPts[2] = Point2f(src.cols - 50, src.rows - 50);

	Mat M = getAffineTransform(srcPts, dstPts);

	Mat dst;
	warpAffine(src, dst, M, Size());

	imshow("src", src);
	imshow("dst", dst);

	waitKey();
	destroyAllWindows();
}
int main() {

	affine_transform();
	return 0;
}