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Circle generating Algorithm - Bresenham Algorithm

1.INPUT RADIUS R, AND CENTRE (H,K)
X=0
Y=R
D=3-2*R
2. WHILE X<=Y COMPUTE LOCATION OF NEXT PIXEL
3. IF(D<0)
D=D+4X+6
X++
IF D>0
THEN
D=D+4(X-Y)+10
X++
Y--
4. PLOT 8 POINT (X,Y) W.R.T CENTRE(H,K) AT CURRENT(X,.Y) COORDINATES
5. GOTO STEP 2
6. STOP