Bresenham’s Circle Drawing Algorithm

1. Insert the radius r of the circle.
2. Initialize the decision variable d=3-(2*r)
3. x=0, y=r then (x₀, y₀)= (0,r)
4. If we are using octant symmetric to plot the pixel then until (x< y)

if(d< 0) then

d=d+4x+6
x=x-1
else
d=d+4(x-y)+10
y=y-1
x=x+1
5. Plot(x,y)
6. Determine the symmetric points the other octants also.
7. STOP