opencv2-进行基本的绘图操作

opencv2-进行基本的绘图操作
//-----------------------------------【宏定义部分】--------------------------------------------

// 描述：定义一些辅助宏

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

#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_WIDTH 600//定义窗口大小的宏

//--------------------------------【全局函数声明部分】-------------------------------------

// 描述：全局函数声明

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

void DrawEllipse( Mat img, double angle );//绘制椭圆

void DrawFilledCircle( Mat img, Point center );//绘制圆

void DrawPolygon( Mat img );//绘制多边形

void DrawLine( Mat img, Point start, Point end );//绘制线段

//-----------------------------------【ShowHelpText( )函数】----------------------------------

// 描述：输出一些帮助信息

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

void ShowHelpText()

{

system("color 5F");

//输出欢迎信息和OpenCV版本

printf("\n\n\t\t\t非常感谢购买《OpenCV3编程入门》一书！\n");

printf("\n\n\t\t\t此为本书OpenCV3版的第20个配套示例程序\n");

printf("\n\n\t\t\t 当前使用的OpenCV版本为：" CV_VERSION );

printf("\n\n ----------------------------------------------------------------------------\n");

}

//---------------------------------------【main( )函数】--------------------------------------

// 描述：控制台应用程序的入口函数，我们的程序从这里开始执行

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

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 );

ShowHelpText();

// ---------------------<1>绘制化学中的原子示例图------------------------

//【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) );

// ----------------------------<2>绘制组合图-----------------------------

//【2.1】先绘制出椭圆

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】绘制一些线段

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_NAME1, atomImage );

cvMoveWindow( WINDOW_NAME1, 0, 200 );

imshow( WINDOW_NAME2, rookImage );

cvMoveWindow( WINDOW_NAME2, WINDOW_WIDTH, 200 );

waitKey( 0 );

return(0);

}

//-------------------------------【DrawEllipse( )函数】--------------------------------

// 描述：自定义的绘制函数，实现了绘制不同角度、相同尺寸的椭圆

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

void DrawEllipse( Mat img, double angle )

{

int thickness = 2;

int lineType = 8;

ellipse( img,

Point( WINDOW_WIDTH/2, WINDOW_WIDTH/2 ),

Size( WINDOW_WIDTH/4, WINDOW_WIDTH/16 ),

angle,

0,

360,

Scalar( 255, 129, 0 ),

thickness,

lineType );

}

//-----------------------------------【DrawFilledCircle( )函数】---------------------------

// 描述：自定义的绘制函数，实现了实心圆的绘制

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

void DrawFilledCircle( Mat img, Point center )

{

int thickness = -1;

int lineType = 8;

circle( img,

center,

WINDOW_WIDTH/32,

Scalar( 0, 0, 255 ),

thickness,

lineType );

}

//-----------------------------------【DrawPolygon( )函数】--------------------------

// 描述：自定义的绘制函数，实现了凹多边形的绘制

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

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( 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 );

}

//-----------------------------------【DrawLine( )函数】--------------------------

// 描述：自定义的绘制函数，实现了线的绘制

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

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

{

int thickness = 2;

int lineType = 8;

line( img,

start,

end,

Scalar( 0, 0, 0 ),

thickness,

lineType );

}