OpenCv的数据结构与基本绘图

参考学习opencv3编程入门：学习了绘制几种图形的函数方法以及具体应用：具体看代码。

#include 
#include 
#include 

using namespace cv;

#define WINDOW_NAME1 "【绘制图像1】"
#define WINDOW_NAME2 "【绘制图像2】"
#define WINDOW_WIDTH  600 

//实现绘制不同角度、相同尺寸的椭圆
void DrawEllipse(Mat img, double angle)
{
	int thickness = 2;
	int lineType = 8;

	ellipse(img,								//将椭圆画在img上
		Point(WINDOW_WIDTH/2, WINDOW_WIDTH/2),	//椭圆中心
		Size(WINDOW_WIDTH/4, WINDOW_WIDTH/16),	//并且大小位于矩形内
		angle,									//椭圆旋转角度为angle
		0, 360,									//扩展弧度
		Scalar(255, 129, 0),					//图形颜色
		thickness,								//线宽
		lineType);								//线型
}

//实现实心圆的绘制
void DrawFilledCircle(Mat img, Point center)
{
	int thickness = -1;
	int lineType = 8;
	circle(
		img,							//将实心圆画在img上
		center,							//圆心由center定义
		WINDOW_WIDTH/32,					//圆的半径
		Scalar(0, 0, 255),				//圆的颜色
		thickness,						//线宽定义为thickness = -1，绘制的是实心的。
		lineType						//线型 8 为联通线型
		);
}

//实现凹多边形的绘制
void DrawPolygon(Mat img)
{
	int lineType = 8;
	//创建一些点
	Point rookPoints[1][20];
	rookPoints[0][0] = Point(WINDOW_WIDTH/4, 7*WINDOW_WIDTH/8);
	rookPoints[0][1] = Point(3*WINDOW_WIDTH/4, 7*WINDOW_WIDTH/8);
	rookPoints[0][2] = Point(3*WINDOW_WIDTH/4, 13*WINDOW_WIDTH/16);
	rookPoints[0][3] = Point(11*WINDOW_WIDTH/16, 13*WINDOW_WIDTH/16);
	rookPoints[0][4] = Point(19*WINDOW_WIDTH/32, 3*WINDOW_WIDTH/8);
	rookPoints[0][5] = Point(3*WINDOW_WIDTH/4, 3*WINDOW_WIDTH/8);
	rookPoints[0][6] = Point(3*WINDOW_WIDTH/4, WINDOW_WIDTH/8);
	rookPoints[0][7] = Point(26*WINDOW_WIDTH/40,WINDOW_WIDTH/8);
	rookPoints[0][8] = Point(26*WINDOW_WIDTH/40,WINDOW_WIDTH/4);
	rookPoints[0][9] = Point(22*WINDOW_WIDTH/40,WINDOW_WIDTH/4);
	rookPoints[0][10] = Point(22*WINDOW_WIDTH/40,WINDOW_WIDTH/8);
	rookPoints[0][11] = Point(18*WINDOW_WIDTH/40,WINDOW_WIDTH/8);
	rookPoints[0][12] = Point(18*WINDOW_WIDTH/40,WINDOW_WIDTH/4);
	rookPoints[0][13] = Point(14*WINDOW_WIDTH/40,WINDOW_WIDTH/4);
	rookPoints[0][14] = Point(26*WINDOW_WIDTH/40,WINDOW_WIDTH/8);
	rookPoints[0][15] = Point(WINDOW_WIDTH/4,WINDOW_WIDTH/8);
	rookPoints[0][16] = Point(WINDOW_WIDTH/4,3*WINDOW_WIDTH/8);
	rookPoints[0][17] = Point(13*WINDOW_WIDTH/32,3*WINDOW_WIDTH/8);
	rookPoints[0][18] = Point(5*WINDOW_WIDTH/16,13*WINDOW_WIDTH/16);
	rookPoints[0][19] = Point(WINDOW_WIDTH/4,13*WINDOW_WIDTH/16);

	const Point * ppt[1] = {rookPoints[0]};
	int npt[] = {20};

	fillPoly(
		img,								//将多边形画到图像img上
		ppt,								//多边形的顶点集为ppt
		npt,								//要绘制的顶点数目
		1,									//要绘制多边形的数量
		Scalar(255,255,255),				//多边形颜色定义
		lineType
		);
}

//实现线的绘制函数

void DrawLine(Mat img, Point start, Point end)
{
	int thickness = 2;
	int lineType = 8;
	line(
		img,						
		start,
		end,
		Scalar(0, 0, 0),		//代表黑色
		thickness,
		lineType
		);
}

int main()
{
	//创建空白的Mat图像
	Mat atomImage = Mat::zeros(WINDOW_WIDTH, WINDOW_WIDTH, CV_8UC3);
	Mat rookImage = Mat::zeros(WINDOW_WIDTH, WINDOW_WIDTH, CV_8UC3);
	//绘制椭圆

	DrawEllipse(atomImage, 90);
	DrawEllipse(atomImage, 0);
	DrawEllipse(atomImage, 45);
	DrawEllipse(atomImage, -45);
	//绘制圆心
	DrawFilledCircle(atomImage, Point(WINDOW_WIDTH/2, WINDOW_WIDTH/2));
	//绘制椭圆
	DrawPolygon(rookImage);
	//绘制矩形
	rectangle(rookImage, Point(0, 7*WINDOW_WIDTH/8), Point(WINDOW_WIDTH, WINDOW_WIDTH), Scalar(0, 255, 255), -1, 8);
	//绘制一些线段
	DrawLine(rookImage, Point(0, 15*WINDOW_WIDTH/16),Point(0, 15*WINDOW_WIDTH/16) );

	imshow(WINDOW_NAME1, atomImage);
	moveWindow(WINDOW_NAME1, 0, 200);
	imwrite("yuanzi.jpg",atomImage);
	imshow(WINDOW_NAME2, rookImage);
	moveWindow(WINDOW_NAME2, WINDOW_WIDTH, 200);
	imwrite("gege.jpg", rookImage);
	waitKey(0);

	return 0;
	
}