73 lines
1.2 KiB
C++
73 lines
1.2 KiB
C++
#include <vector>
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#include <cstdio>
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#include <opencv2/opencv.hpp>
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using namespace std;
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using namespace cv;
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class Shape
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{
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public:
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virtual void draw(Mat &img) = 0;
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};
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class Circle : public Shape
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{
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public:
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Circle(int x, int y, int r)
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: _x(x), _y(y), _r(r) {}
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virtual void draw(Mat &img) {
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circle(img, Point(_x, _y), _r, Scalar(0,0,0));
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}
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private:
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int _x, _y, _r;
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};
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class Rectangle : public Shape
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{
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public:
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Rectangle(int x, int y, int w, int h)
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: _x(x), _y(y), _w(w), _h(h) {}
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virtual void draw(Mat &img) {
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rectangle(img, Point(_x, _y),
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Point(_x+_w, _y+_h), Scalar(0,0,0));
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}
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private:
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int _x, _y, _w, _h;
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};
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int main()
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{
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const char wnd[] = "test";
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namedWindow(wnd, WINDOW_AUTOSIZE);
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int width = 1000, height = 800;
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vector<Shape*> shapes {
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new Circle(300, 200, 100),
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new Rectangle(500, 200, 300, 100),
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new Circle(500, 600, 100),
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new Rectangle(100, 400, 100, 150)
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};
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Mat img = Mat::zeros(height, width, CV_8UC3);
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while (true)
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{
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img = Scalar(255,255,255);
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for (Shape* shape : shapes) {
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shape->draw(img);
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}
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imshow(wnd, img);
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int key = waitKey(40);
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if ((key & 255) == 27) break;
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}
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for (Shape* shape : shapes) delete shape;
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shapes.clear();
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return 0;
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} |