opencv 基本图形绘制

#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;

#include <opencv2/imgproc/imgproc.hpp>


#define WINDOW_NAME1 "【绘制图1】"        //为窗口标题定义的宏 
#define WINDOW_NAME2 "【绘制图2】"        //为窗口标题定义的宏 
#define WINDOW_NAME3 "【绘制图3】"        //为窗口标题定义的宏 
#define WINDOW_WIDTH 600//定义窗口大小的宏

// 椭圆
void DrawEllipse(Mat img, double angle)
{
    int thickness = 2;
    int lineType = 8;

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


// 圆
void DrawFilledCircle(Mat img, Point center)
{
    int thickness = -1;
    int lineType = 8;

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

// 多边形
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(14 * 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,
        ppt,
        npt,
        1,
        Scalar(255, 255, 255),
        lineType);
}

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


int main(void)
{

    // 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);

    //【1.1】先绘制出椭圆
    DrawEllipse(atomImage, 90);
    DrawEllipse(atomImage, 0);
    DrawEllipse(atomImage, 45);
    DrawEllipse(atomImage, -45);

    //【1.2】再绘制圆心
    DrawFilledCircle(atomImage, Point(WINDOW_WIDTH / 2, WINDOW_WIDTH / 2));

    imshow(WINDOW_NAME1, atomImage);
    moveWindow( WINDOW_NAME1, 0, 200 );


    // ----------------------------<2>绘制组合图-----------------------------
    //【2.1】多边形
    DrawPolygon(rookImage);

    // 【2.2】绘制底部矩形
    rectangle(rookImage,
        Point(0, 7 * WINDOW_WIDTH / 8),
        Point(WINDOW_WIDTH, WINDOW_WIDTH),
        Scalar(0, 255, 255),
        -1,
        8);

    // 【2.3】绘制底部线段
    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 / 4, WINDOW_WIDTH));

    // ---------------------------<3>显示绘制出的图像------------------------
    imshow(WINDOW_NAME2, rookImage);
    moveWindow( WINDOW_NAME2, WINDOW_WIDTH, 200 );


//    imshow(WINDOW_NAME3, rookImage + atomImage);

    waitKey(0);
    return(0);
}