Derivation,Algorithm and Drawback of PARAMETRIC Circle Drawing Algorithm.

Derivation,Algorithm and Drawback of PARAMETRIC Circle Drawing Algorithm.

DERIVATION :

                                   The locus of all those points that are situated at equal distance from a fixed point (Xc , Yc).

X – Xc = r cos(angle)

Y – Yc  = r sin(angle)

X = Xc + r cos(angle)

Y = Yc + r sin(angle)

ALGORITHM OF PARAMETRIC CIRCLE DRAWING :

Begin :

             Read (Xc , Yc) and r

             X = Xc , Y = Yc

             while(X <= Xc + r)

             {

                    plotpoint (X ,Y ) 

                    X++

             }

End

DRAWBACK OR PARAMETRIC CIRCLE DRAWING :

•     Round of error.
•    Floating point operation.
•    Stair case output.