#include <iostream>
#include <opencv2/opencv.hpp>

using namespace std;
using namespace cv;

int main(int argc, char** argv)
{
	Mat img = imread("./Image/2.jpg", IMREAD_COLOR);
	if (img.empty())
	{
		cout << "图像加载失败" << endl;
		return -1;
	}

	rectangle(img, Point(50, 50), Point(300, 300), Scalar(0, 0, 255), 3, LINE_8);	// 绘制矩形
	circle(img, Point(100, 100), 30, Scalar(255, 255, 255), 2, LINE_8);				// 绘制圆形
	line(img, Point(50, 50), Point(300, 300), Scalar(0, 255, 0), 2, LINE_8);		// 绘制线
	ellipse(img, Point(200, 200), Size(100, 200), 0, 0, 360, Scalar(200, 0, 0), 2, LINE_8);		// 绘制椭圆
	
	Point p1(100, 100);
	Point p2(350, 100);
	Point p3(450, 280);
	Point p4(320, 450);
	Point p5(100, 100);
	
	vector<Point> pts;

	pts.push_back(p1);
	pts.push_back(p2);
	pts.push_back(p3);
	pts.push_back(p4);
	pts.push_back(p5);

	//polylines(img, pts, true, Scalar(0, 255, 255), 6, LINE_8);		// 绘制多边形，该函数不能通过修改线宽填充多边形
	//fillPoly(img, pts, Scalar(255, 0, 0), LINE_8);					// 填充多边型

	vector<vector<Point>> contours;
	contours.push_back(pts);
	
	drawContours(img, contours, 0, Scalar(200, 200, 0), FILLED, LINE_8);	// 绘制轮廓

	imshow("绘制演示", img);

	waitKey(0);
	destroyAllWindows();
	return 0;
}