OpenCV第八发：基本图形绘制对比Halcon算子

之前一直用Halcon 里面有线程的基本图形绘制算子，直接拿来用，其实OpenCV中也是一样的。和Halcon中差不多。

多多学习，多多学习。。。

Halcon中也有绘制基本图形算子，但是Halcon中如果需要显示则，必须gen_ 或者 disp_

如 Halcon代码：

Step 1:draw_rectangle1( : : WindowHandle : Row1, Column1, Row2, Column2)  这个只是生成对象，并不会在屏幕中显示，

Step 2:gen_rectangle1( : Rectangle : Row1, Column1, Row2, Column2 : ) 所以对于用户而言，需要调用这个，在屏幕中显示出来，让用户可以直观的看到。disp_rectangle1( : : WindowHandle, Row1, Column1, Row2, Column2 : )

当然Halcon中有很多。draw_前缀的都是生成对应的对象，disp_都是用来显示所对应的对象到屏幕中。

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
using namespace cv;
using namespace std;
Mat OutPutImg;

void MyDrawLine() {
	Point p1 = Point(20, 20);
	Point p2;
	p2.x = 100;
	p2.y = 100;

	Scalar LineColor = Scalar(0, 0, 255);

	line(OutPutImg, p1, p2, LineColor, 1, LINE_8);
	//arrowedLine(OutPutImg, p1, p2, LineColor, 2, LINE_AA);
	//arrowedLine(OutPutImg,  p2, p1, LineColor, 1, LINE_AA);

	//! type of line
	//enum LineTypes {
	//	FILLED = -1,
	//	LINE_4 = 4, //!< 4-connected line
	//	LINE_8 = 8, //!< 8-connected line
	//	LINE_AA = 16 //!< antialiased line	//};

}

void Myrectangle01() {
	Rect re = Rect(20,20,100,100);
	Scalar reColor = Scalar(0, 0, 255);
	rectangle(OutPutImg, re, reColor,1);
	//函数原型
	//void rectangle(CV_IN_OUT Mat& img, Rect rec,
	//	const Scalar& color, int thickness = 1,
	//	int lineType = LINE_8, int shift = 0);
}

void Myrectangle02() {
	Point p1 = Point(20, 20);
	Point p2;
	p2.x = 100;
	p2.y = 100;

	Scalar reColor = Scalar(0, 0, 255);
	//rectangle(OutPutImg, p2, p1, reColor, 1);
	rectangle(OutPutImg, p1, p2, reColor, 1);
	//函数原型
	//void rectangle(InputOutputArray img, Point pt1, Point pt2,
	//	const Scalar& color, int thickness = 1,
	//	int lineType = LINE_8, int shift = 0);
}

void Mycircle(){
	Point Center_p;
	Center_p.x = OutPutImg.cols/2;
	Center_p.y = OutPutImg.rows/2;
	int circle_radius = 50;
	Scalar circle_Color = Scalar(0, 0, 255);
	circle(OutPutImg, Center_p, circle_radius, circle_Color, 1);
	//函数原型
	//void circle(InputOutputArray img, Point center, int radius,
	//const Scalar& color, int thickness = 1,
	//int lineType = LINE_8, int shift = 0);
}

void Myellipse01() {

	Point Center_p;
	Center_p.x = OutPutImg.cols / 2;
	Center_p.y = OutPutImg.rows / 2;

	Size SizeOfellipse; //= Size(100, 20);
	SizeOfellipse.height = 100;//长边
	SizeOfellipse.width = 20;//短边
	double angle = 90;//角度为长边方向与垂直方向的夹角
	double startAngle = 0;
	//double endAngle = 360;
	double endAngle = -90;
	Scalar circle_Color = Scalar(0, 0, 255);


	ellipse(OutPutImg, Center_p, SizeOfellipse, angle, startAngle, endAngle, circle_Color,1);
	//函数原型
	//void ellipse(InputOutputArray img, Point center, Size axes,
	//	double angle, double startAngle, double endAngle,
	//	const Scalar& color, int thickness = 1,
	//	int lineType = LINE_8, int shift = 0);
}

void Myellipse02() {

	Point Center_p;
	Center_p.x = OutPutImg.cols / 2+10;
	Center_p.y = OutPutImg.rows / 2+20;

	Size SizeOfellipse; //= Size(100, 20);
	SizeOfellipse.height = 200;//长边
	SizeOfellipse.width = 100;//短边
	double angle = 90;//角度为长边方向与垂直方向的夹角
	//如果需要绘制圆弧，则将长短边设置相等，然后起始角度和终止角度设置就OK
	double startAngle = 0;
	//double endAngle = 360;
	double endAngle = -90;
	Scalar circle_Color = Scalar(0, 0, 255);

	RotatedRect rr;
	rr.angle = endAngle;
	rr.size = SizeOfellipse;
	rr.center = Center_p;
	ellipse(OutPutImg, rr, circle_Color, 1);
	//函数原型
	//CV_EXPORTS_W void ellipse(InputOutputArray img, 
	//const RotatedRect& box, const Scalar& color,
	//	int thickness = 1, int lineType = LINE_8);
}

void MyPolygon() {

	//定义多边形的拐角点坐标
	Point pts[1][5];

	pts[0][0] = Point(100,100);
	pts[0][1] = Point(100,200);
	pts[0][2] = Point(200,200);
	pts[0][3] = Point(200,300);
	pts[0][4] = Point(400,450);


	const Point* ppts[] = { pts[0] };
	int NumPts[] = { 5 };
	Scalar mColor = Scalar(0, 0, 255);
	
	fillPoly(OutPutImg,ppts,NumPts,1, mColor,8);

	//函数原型
	//CV_EXPORTS_W void fillConvexPoly(InputOutputArray img, InputArray points,
	//	const Scalar& color, int lineType = LINE_8,
	//	int shift = 0);

	///** @overload */
	//CV_EXPORTS void fillPoly(Mat& img, const Point** pts,
	//	const int* npts, int ncontours,
	//	const Scalar& color, int lineType = LINE_8, int shift = 0,
	//	Point offset = Point());




}




int main() {

	Mat srcImage = imread("D:/opencv/Test01.jpg");
	//Mat OutPutImg = Mat::zeros(srcImage.size(), srcImage.type());
	
	OutPutImg = Mat::zeros(srcImage.size(), srcImage.type());	

	if (!srcImage.data) {
		printf("骚年：你应该继续查找你的文件路径是什么？？或者你电脑是否需要换新的。");
		return -1;
	}

	//if (srcImage.empty()) {//如果图像为空则返回 false
	//	printf("如果图像为空则返回 false");
	//	return -1;
	//}	
	
	MyDrawLine();//先显示线条
	//Myrectangle01();
	Myrectangle02();
	Mycircle();
	Myellipse01();
	Myellipse02();
	MyPolygon();


	Point Test_p1 = Point(OutPutImg.rows/2, OutPutImg.cols / 2-100);
	Scalar zitiColor = Scalar(255, 255, 255);
	string mt = { "This text that U want to show in you scr" };
	putText(OutPutImg, mt, Test_p1, CV_FONT_HERSHEY_COMPLEX,0.8, zitiColor,1, LINE_8);
	
	//函数原型
	//int fontFace,
	//#define CV_FONT_HERSHEY_SIMPLEX         0
	//#define CV_FONT_HERSHEY_PLAIN           1
	//#define CV_FONT_HERSHEY_DUPLEX          2
	//#define CV_FONT_HERSHEY_COMPLEX         3
	//#define CV_FONT_HERSHEY_TRIPLEX         4
	//#define CV_FONT_HERSHEY_COMPLEX_SMALL   5
	//#define CV_FONT_HERSHEY_SCRIPT_SIMPLEX  6
	//#define CV_FONT_HERSHEY_SCRIPT_COMPLEX  7
	//#define CV_FONT_ITALIC                 16
	//void putText(InputOutputArray img, const String& text, Point org,
	//	int fontFace, double fontScale, Scalar color,
	//	int thickness = 1, int lineType = LINE_8,
	//	bool bottomLeftOrigin = false);

	imshow("源图像", OutPutImg);
	
	//如果放到背景图像显示之后则会覆盖，就和Halcon中一项。类似于PS中的图层
	//MyDrawLine();


	waitKey();
	return 0;
}