【opencv练习10 - 基础绘制】

/*****************************************************    测试程序  - 【 基础绘制 】    时间：2016年8月22日*******************************************************/#define w 400/** * @function MyEllipse【椭圆】 * @brief Draw a fixed-size ellipse with different angles */void MyEllipse( Mat img, double angle ){  int thickness = 2;  int lineType = 8;  ellipse( img,       Point( w/2, w/2 ),           //圆心       Size( w/4, w/16 ),           //BoxSize       angle,                       //主轴旋转角度       0,                           //       360,       Scalar( 255, 0, 0 ),         //初始化       thickness,                          lineType );}/** * @function MyFilledCircle * @brief Draw a fixed-size filled circle */void MyFilledCircle( Mat img, Point center ){  int thickness = -1;       //-1——填充  int lineType = 8;  circle( img,      center,      w/32,      Scalar( 0, 0, 255 ),      thickness,      lineType );}/** * @function MyPolygon * @function Draw a simple concave polygon (rook) */void MyPolygon( Mat img ){  int lineType = 8;  /** Create some points */  Point rook_points[1][20];  rook_points[0][0]  = Point(    w/4,   7*w/8 );  rook_points[0][1]  = Point(  3*w/4,   7*w/8 );  rook_points[0][2]  = Point(  3*w/4,  13*w/16 );  rook_points[0][3]  = Point( 11*w/16, 13*w/16 );  rook_points[0][4]  = Point( 19*w/32,  3*w/8 );  rook_points[0][5]  = Point(  3*w/4,   3*w/8 );  rook_points[0][6]  = Point(  3*w/4,     w/8 );  rook_points[0][7]  = Point( 26*w/40,    w/8 );  rook_points[0][8]  = Point( 26*w/40,    w/4 );  rook_points[0][9]  = Point( 22*w/40,    w/4 );  rook_points[0][10] = Point( 22*w/40,    w/8 );  rook_points[0][11] = Point( 18*w/40,    w/8 );  rook_points[0][12] = Point( 18*w/40,    w/4 );  rook_points[0][13] = Point( 14*w/40,    w/4 );  rook_points[0][14] = Point( 14*w/40,    w/8 );  rook_points[0][15] = Point(    w/4,     w/8 );  rook_points[0][16] = Point(    w/4,   3*w/8 );  rook_points[0][17] = Point( 13*w/32,  3*w/8 );  rook_points[0][18] = Point(  5*w/16, 13*w/16 );  rook_points[0][19] = Point(    w/4,  13*w/16 );  const Point* ppt[1] = { rook_points[0] };  int npt[] = { 20 };  fillPoly( img,        ppt,        npt,            1,        Scalar( 255, 255, 255 ),        lineType );}/** * @function MyLine * @brief Draw a simple line */void MyLine( Mat img, Point start, Point end ){  int thickness = 2;  int lineType = 8;  line( img,    start,    end,    Scalar( 0, 0, 0 ),    thickness,    lineType );}void main(void){    /// Windows names    char atom_window[] = "Drawing 1: Atom";    char rook_window[] = "Drawing 2: Rook";    //创建空文件    Mat atom_image = Mat::zeros( w, w, CV_8UC3 );    Mat rook_image = Mat::zeros( w, w, CV_8UC3 );    //【 1. 绘制原子 Draw a simple atom:】**************************************    /// 1.a. Creating ellipses    MyEllipse( atom_image, 90 );    MyEllipse( atom_image, 0 );    MyEllipse( atom_image, 45 );    MyEllipse( atom_image, -45 );    /// 1.b. Creating circles    MyFilledCircle( atom_image, Point( w/2, w/2) );    //【 2. 绘制象棋 Draw a rook】**************************************    // 2.a. 创建凸多边形    MyPolygon( rook_image );    // 2.b. 创建矩形    rectangle( rook_image,            Point( 0, 7*w/8 ),            Point( w, w),            Scalar( 0, 255, 255 ),            -1,            8 );    // 2.c. 几根线    MyLine( rook_image, Point( 0, 15*w/16.0 ), Point( w, 15*w/16 ) );    MyLine( rook_image, Point( w/4, 7*w/8 ), Point( w/4, w ) );    MyLine( rook_image, Point( w/2, 7*w/8 ), Point( w/2, w ) );    MyLine( rook_image, Point( 3*w/4, 7*w/8 ), Point( 3*w/4, w ) );    // 3. 显示，移动    imshow( atom_window, atom_image );    moveWindow( atom_window, 0, 200 );    imshow( rook_window, rook_image );    moveWindow( rook_window, w, 200 );    waitKey(0);}