c++bresenham算法画圆

很高兴回答您的问题！C语言中使用Bresenham算法画圆的代码如下：

#include <graphics.h>
#include <conio.h>
#include <dos.h>

void drawCircle(int xc, int yc, int x, int y)
{
    putpixel(xc+x, yc+y, RED);
    putpixel(xc-x, yc+y, RED);
    putpixel(xc+x, yc-y, RED);
    putpixel(xc-x, yc-y, RED);
    putpixel(xc+y, yc+x, RED);
    putpixel(xc-y, yc+x, RED);
    putpixel(xc+y, yc-x, RED);
    putpixel(xc-y, yc-x, RED);
}

void bresenhamCircle(int xc, int yc, int r)
{
    int x = 0, y = r;
    int d = 3 - 2 * r;
    drawCircle(xc, yc, x, y);
    while (y >= x)
    {
        x++;
        if (d > 0)
        {
            y--;
            d = d + 4 * (x - y) + 10;
        }
        else
        {
            d = d + 4 * x + 6;
        }
        drawCircle(xc, yc, x, y);
    }
}

int main()
{
    int gd = DETECT, gm;
    initgraph(&gd, &gm, "C:\\TC\\BGI");
    bresenhamCircle(250, 250, 100);
    getch();
    closegraph();
    return 0;
}

这段代码使用Bresenham算法画圆，可以在C语言的图形库中使用。