用C/C++绘制填充椭圆的简单算法

#include <iostream>
#include <vector>
#include <cmath>

using namespace std;

void drawEllipse(int x, int y, int width, int height, int numPoints) {
    vector<pair<int, int>> controlPoints;
    for (int i = 0; i < numPoints; i++) {
        int angle = 2 * M_PI * i / numPoints;
        int cx = x + width * cos(angle);
        int cy = y + height * sin(angle);
        controlPoints.push_back(make_pair(cx, cy));
    }

    vector<pair<int, int>> endPoints;
    for (int i = 0; i < numPoints; i++) {
        int angle = 2 * M_PI * i / numPoints;
        int cx = x + width * cos(angle);
        int cy = y + height * sin(angle);
        endPoints.push_back(make_pair(cx, cy));
    }

    vector<pair<int, int>> crossPoints;
    for (int i = 0; i < numPoints; i++) {
        int angle = 2 * M_PI * i / numPoints;
        int cx = x + width * cos(angle);
        int cy = y + height * sin(angle);
        crossPoints.push_back(make_pair(cx, cy));
    }

    // Draw the ellipse
    fill(255);
    stroke(0);
    for (int i = 0; i < numPoints; i++) {
        int angle = 2 * M_PI * i / numPoints;
        int cx = x + width * cos(angle);
        int cy = y + height * sin(angle);
        point(cx, cy);
    }
    for (int i = 0; i < numPoints; i++) {
        int angle = 2 * M_PI * i / numPoints;
        int cx = x + width * cos(angle);
        int cy = y + height * sin(angle);
        point(cx, cy);
    }
    for (int i = 0; i < numPoints; i++) {
        int angle = 2 * M_PI * i / numPoints;
        int cx = x + width * cos(angle);
        int cy = y + height * sin(angle);
        point(cx, cy);
    }
}

int main() {
    int numPoints = 10;
    int x = 100;
    int y = 100;
    int width = 200;
    int height = 200;
    drawEllipse(x, y, width, height, numPoints);
    return 0;
}