Integer Circle Algorithm Pseudocode

;**R is the radius
;  X,Y are coordinates**

R→C           ;This is an offset from a coordinate
0→D           ;This is an offset from a coordinate
R→A           ;This is a counter
-1→B          ;Used to change the counter
Repeat D>C
  <<plot pixels accordingly>>
  D+1→D
  B+2→B
  A-B→A
  If (A-1)<0
    A+R+R→A
    C-1→C
    B+1→B
  End