《OpenCV3编程入门》第4章-学习笔记3- OpenCV基本图形绘制

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      #include <opencv2/opencv.hpp>
     
    
   

    

     

    
    

     

      #include <iostream>
     
    
   

    

     

    
    

     

      #include <string>
     
    
   

    

     

    
    

     

      #define WINDOW_WIDTH 600 //窗口大小
     
    
   

    

     

    
    

     

      #define WINDOW_NAME1 "【绘制图1】"
     
    
   

    

     

    
    

     

      #define WINDOW_NAME2 "【绘制图2】"
     
    
   

    

     

    
    

     

      using namespace std;
     
    
   

    

     

    
    

     

      using namespace cv;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      //------------------------【绘制椭圆】------------------------------------------------------------------
     
    
   

    

     

    
    

     

      // 自定义，绘制不同角度，相同尺寸的椭圆
     
    
   

    

     

    
    

     

      // 画在img图上，中心点坐标，大小位于矩形内（长、宽），旋转角度，扩展弧度0，360，图形颜色，线宽，线型
     
    
   

    

     

    
    

     

      //------------------------------------------------------------------------------------------------------
     
    
   

    

     

    
    

     

      void DrawEllipse(Mat img, double angle)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	int thickness = 2;
     
    
   

    

     

    
    

     
	int lineType = 2;
     
    
   

    

     

    
    

     

      	ellipse(img, Point(WINDOW_WIDTH / 2, WINDOW_WIDTH / 2), Size(WINDOW_WIDTH / 4, WINDOW_WIDTH / 16), angle, 0, 360, Scalar(255, 129, 0), thickness, lineType);
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      //----------------------------【实心圆绘制】----------------------------------
     
    
   

    

     

    
    

     

      // 自定义，绘制实心圆
     
    
   

    

     

    
    

     

      // 画在img图上，圆心，圆的半径，圆的颜色，线宽-1为实心，线型
     
    
   

    

     

    
    

     

      //----------------------------------------------------------------------------
     
    
   

    

     

    
    

     

      void DrawFilledCircle(Mat img, Point center)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	int thickness = -1;
     
    
   

    

     

    
    

     
	int lineType = 8;
     
    
   

    

     

    
    

     

      	circle(img, center, WINDOW_WIDTH / 32, Scalar(0, 0, 255), thickness, lineType);
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      //---------------------------【凹边型绘制】--------------------------------------
     
    
   

    

     

    
    

     

      // 自定义，凹边型绘制
     
    
   

    

     

    
    

     

      //将多边形画到图像上，多边形顶点集为ppt，多边形顶点数为npt，多边形数量为1，多边形定义白色
     
    
   

    

     

    
    

     

      //---------------------------------------------------------------------
     
    
   

    

     

    
    

     

      void DrawPolygon(Mat img)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	int lineType = 8;
     
    
   

    

     

    
    

     
	//创建一些点
     
    
   

    

     

    
    

     

      	Point rookPoint[1][20]; //二位数组，因为Point 要保存两个值
     
    
   

    

     

    
    

     

      	rookPoint[0][0] = Point(WINDOW_WIDTH / 4, 7 * WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][1] = Point(3 * WINDOW_WIDTH / 4, 7 * WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][2] = Point(3 * WINDOW_WIDTH / 4, 13 * WINDOW_WIDTH / 16);
     
    
   

    

     

    
    

     

      	rookPoint[0][3] = Point(11 * WINDOW_WIDTH / 16, 13 * WINDOW_WIDTH / 16);
     
    
   

    

     

    
    

     

      	rookPoint[0][4] = Point(19 * WINDOW_WIDTH / 32, 3 * WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][5] = Point(3 * WINDOW_WIDTH / 4, 3 * WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][6] = Point(3 * WINDOW_WIDTH / 4, WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][7] = Point(26 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][8] = Point(26 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 4);
     
    
   

    

     

    
    

     

      	rookPoint[0][9] = Point(22 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 4);
     
    
   

    

     

    
    

     

      	rookPoint[0][10] = Point(22 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][11] = Point(18 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][12] = Point(18 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 4);
     
    
   

    

     

    
    

     

      	rookPoint[0][13] = Point(14 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 4);
     
    
   

    

     

    
    

     

      	rookPoint[0][14] = Point(14 * WINDOW_WIDTH / 40, WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][15] = Point(WINDOW_WIDTH / 4, WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][16] = Point(WINDOW_WIDTH / 4, 3 * WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][17] = Point(13 * WINDOW_WIDTH / 32, 3 * WINDOW_WIDTH / 8);
     
    
   

    

     

    
    

     

      	rookPoint[0][18] = Point(5 * WINDOW_WIDTH / 16, 13 * WINDOW_WIDTH / 16);
     
    
   

    

     

    
    

     

      	rookPoint[0][19] = Point(WINDOW_WIDTH / 4, 13 * WINDOW_WIDTH / 16);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	const Point* ppt[1] = { rookPoint[0] };
     
    
   

    

     

    
    

     
	int npt[] = { 20 };
     
    
   

    

     

    
    

     

      	fillPoly(img, ppt, npt, 1, Scalar(255, 255, 255), lineType);
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     

      //-------------------------------【画直线段】------------------------------
     
    
   

    

     

    
    

     

      // 在img图片上画一条从start到end的直线段
     
    
   

    

     

    
    

     

      // 黑色，线粗，线型
     
    
   

    

     

    
    

     

      //-----------------------------------------------------------------
     
    
   

    

     

    
    

     

      void DrawLine(Mat img, Point start, Point end)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	int thickness = 2;
     
    
   

    

     

    
    

     
	int lineType = 8;
     
    
   

    

     

    
    

     

      	line(img, start, end, Scalar(0, 0, 0), thickness, lineType);
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      //-------------【main函数，程序主入口】--------------
     
    
   

    

     

    
    

     

      int main()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	//创建空白Mat图像
     
    
   

    

     

    
    

     

      	Mat atomImage = Mat::zeros(WINDOW_WIDTH, WINDOW_WIDTH, CV_8UC3);
     
    
   

    

     

    
    

     

      	Mat rookImage = Mat::zeros(WINDOW_WIDTH, WINDOW_WIDTH, CV_8UC3);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	//----------------------<1>绘制第一幅图------------------------------------
     
    
   

    

     

    
    

     
	
     
    
   

    

     

    
    

     
	//【1.1】绘制椭圆
     
    
   

    

     

    
    

     

      	DrawEllipse(atomImage, 90);
     
    
   

    

     

    
    

     

      	DrawEllipse(atomImage, 0);
     
    
   

    

     

    
    

     

      	DrawEllipse(atomImage, 45);
     
    
   

    

     

    
    

     

      	DrawEllipse(atomImage, -45);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	//【1.2】绘制圆心
     
    
   

    

     

    
    

     

      	DrawFilledCircle(atomImage, Point(WINDOW_WIDTH / 2, WINDOW_WIDTH / 2));
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	//-----------------------<2>绘制第二幅图--------------------------
     
    
   

    

     

    
    

     
	//【2.1】绘制椭圆
     
    
   

    

     

    
    

     

      	DrawPolygon(rookImage);
     
    
   

    

     

    
    

     
	//【2.2】绘制矩形
     
    
   

    

     

    
    

     

      	rectangle(rookImage, Point(0, 7 * WINDOW_WIDTH / 8), Point(WINDOW_WIDTH, WINDOW_WIDTH), Scalar(0, 255, 255), -1, 8);
     
    
   

    

     

    
    

     
	//【2.3】绘制线段
     
    
   

    

     

    
    

     

      	DrawLine(rookImage, Point(0, 15 * WINDOW_WIDTH / 16), Point(WINDOW_WIDTH, 15 * WINDOW_WIDTH / 16));
     
    
   

    

     

    
    

     

      	DrawLine(rookImage, Point(WINDOW_WIDTH / 4, 7 * WINDOW_WIDTH / 8), Point(WINDOW_WIDTH / 4, WINDOW_WIDTH));
     
    
   

    

     

    
    

     

      	DrawLine(rookImage, Point(WINDOW_WIDTH / 2, 7 * WINDOW_WIDTH / 8), Point(WINDOW_WIDTH / 2, WINDOW_WIDTH));
     
    
   

    

     

    
    

     

      	DrawLine(rookImage, Point(3 * WINDOW_WIDTH / 4, 7 * WINDOW_WIDTH / 8), Point(3 * WINDOW_WIDTH, WINDOW_WIDTH / 4));
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	//-------------------------<3>显示图像--------------------------
     
    
   

    

     

    
    

     

      	imshow(WINDOW_NAME1, atomImage);
     
    
   

    

     

    
    

     

      	moveWindow(WINDOW_NAME1, 0, 200);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      	imshow(WINDOW_NAME2, rookImage);
     
    
   

    

     

    
    

     

      	moveWindow(WINDOW_NAME2, WINDOW_WIDTH, 200);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      	waitKey();
     
    
   

    

     

    
    

     

      	system("pause");
     
    
   

    

     

    
    

     
	return 0;
     
    
   

    

     

    
    

     

      }
     
    
  
 

结果如图：

文章来源: kings.blog.csdn.net，作者：人工智能博士，版权归原作者所有，如需转载，请联系作者。

原文链接：kings.blog.csdn.net/article/details/84063883