基本图形绘制
demo
//---------------------------------【头文件、命名空间包含部分】----------------------------
// 描述：包含程序所使用的头文件和命名空间
//------------------------------------------------------------------------------------------------
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
using namespace cv;
//此程序对于OpenCV3版需要额外包含头文件：
#include <opencv2/imgproc/imgproc.hpp>
//-----------------------------------【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()
{
//输出欢迎信息和OpenCV版本
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】先绘制出多边形
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 );
moveWindow( WINDOW_NAME1, 0, 200 );
imshow( WINDOW_NAME2, rookImage );
moveWindow( 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 );
}
ellipse() 椭圆
void cv::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 )
| 类型 | 变量 | 含义 |
|---|---|---|
| Mat& | img | 表示输入的图像(画椭圆在这个图像上) |
| Point | center | 表示椭圆圆心坐标 |
| Size | axes | 表示轴的长度 |
| double | angle | 表示偏转的角度 |
| double | startAngle | 表示圆弧起始角的角度 |
| double | endAngle | 表示圆弧终结角的角度 |
| const Scalar& | color | 表示线条的颜色 |
| int | thickness=1 | 表示线条的粗细宽度 |
| int | lineType=8 | 表示线条的类型 |
| int | shift=0 | 表示圆心坐标点和数轴的精度 |
#include<opencv2/opencv.hpp>
using namespace cv;
#include<opencv2/imgproc/imgproc.hpp>
int main(int argc, char** argv){
Mat atmoImage = Mat::zeros(600,600,CV_8UC3);
double angle=90;
int thickness = 3;
int lineType = 8;
ellipse(atmoImage,
Point(600/2,600/2),
Size(600/4,600/16),
angle,
0,
360,
Scalar(0,215,255), // Gold颜色
thickness,
lineType);
imshow("绘制椭圆",atmoImage);
waitKey(0);
return 0;
}
circle() 圆
void cv::circle (InputOutputArray img,
Point center,
int radius,
const Scalar & color,
int thickness = 1,
int lineType = LINE_8,
int shift = 0 )
#include<opencv2/opencv.hpp>
using namespace cv;
#include<opencv2/imgproc/imgproc.hpp>
int main(int argc, char** argv){
Mat atmoImage = Mat::zeros(600,600,CV_8UC3);
int radius = 600/32;
int thickness = -1; // -1为实心，1为空心
int lineType = 8;
circle( atmoImage,
Point(300,300),
radius,
Scalar( 0,215,255),
thickness,
lineType );
imshow("绘制圆形",atmoImage);
waitKey(0);
return 0;
}
fillPoly() 多边形
void cv::fillPoly(InputOutputArray img,
const Point ** pts,
const int * npts,
int ncontours,
const Scalar & color,
int lineType = LINE_8,
int shift = 0,
Point offset = Point())
#include<opencv2/opencv.hpp>
#include<iostream>
using namespace cv;
using namespace std;
#include<opencv2/imgproc/imgproc.hpp>
#define WINDOW_WIDTH 600//定义窗口大小的宏
int main(int argc, char** argv){
Mat rookImage = Mat::zeros(600,600,CV_8UC3);
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 );
for(int j=0; j<20; j++){
printf("rookPoints[0][%d] = ",j);
cout<< rookPoints[0][j] << endl << endl;
}
const Point* ppt[1] = { rookPoints[0] };
int npt[] = { 20 };
int lineType = 8;
fillPoly( rookImage,ppt,npt,1,Scalar( 255, 255, 255 ),lineType );
int radius = 600/32;
int thickness = -1; // -1为实心，1为空心
circle( rookImage,
rookPoints[0][0],
radius,
Scalar( 0,215,255),
thickness,
lineType );
imshow("绘制多边形",rookImage);
waitKey(0);
return 0;
}
rectangle() 矩形
void cv::rectangle(InputOutputArray img,
Point pt1,
Point pt2,
const Scalar & color,
int thickness = 1,
int lineType = LINE_8,
int shift = 0 )
#include<opencv2/opencv.hpp>
#include<iostream>
using namespace cv;
using namespace std;
#include<opencv2/imgproc/imgproc.hpp>
#define WINDOW_WIDTH 600//定义窗口大小的宏
int main(int argc, char** argv){
Mat rookImage = Mat::zeros(600,600,CV_8UC3);
rectangle( rookImage,
Point( 0, 7*WINDOW_WIDTH/8 ),
Point( WINDOW_WIDTH/2-30, WINDOW_WIDTH-30),
Scalar( 0, 255, 255 ),
-1,
8 );
int radius = 600/32;
int thickness = -1; // -1为实心，1为空心
int lineType = 8;
circle( rookImage,
Point( 0, 7*WINDOW_WIDTH/8 ),
radius,
Scalar( 255,245,152), // 蓝色
thickness,
lineType);
circle( rookImage,
Point( WINDOW_WIDTH/2-30, WINDOW_WIDTH-30),
radius,
Scalar( 0,255,0), // 绿色
thickness,
lineType);
imshow("绘制矩形",rookImage);
waitKey(0);
return 0;
}
line() 线段
void cv::line( InputOutputArray img,
Point pt1,
Point pt2,
const Scalar & color,
int thickness = 1,
int lineType = LINE_8,
int shift = 0 )
#include<opencv2/opencv.hpp>
#include<iostream>
using namespace cv;
using namespace std;
#include<opencv2/imgproc/imgproc.hpp>
#define WINDOW_WIDTH 600//定义窗口大小的宏
int main(int argc, char** argv){
Mat rookImage = Mat::zeros(600,600,CV_8UC3);
int thickness = 2;
int lineType = 8;
line(rookImage,
Point( 0, 15*WINDOW_WIDTH/16 ),
Point( WINDOW_WIDTH, 15*WINDOW_WIDTH/16 ),
Scalar( 62, 255, 192 ),
thickness,
lineType );
line(rookImage,
Point( WINDOW_WIDTH/4, 7*WINDOW_WIDTH/8 ),
Point( WINDOW_WIDTH/4, WINDOW_WIDTH ),
Scalar( 62, 255, 192 ),
thickness,
lineType );
imshow("绘制线段",rookImage);
waitKey(0);
return 0;
}
