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UGC-NET | UGC NET CS 2016 July – III | Question 13
Consider the Breshenham’s circle generation algorithm for plotting a circle with centre (0, 0) and radius ‘r’ units in first quadrant. If the current point is (xi , yi ) and decision parameter is pi then what will be the next point (xi + 1, yi + 1 + 1) and updated decision parameter pi + 1 for pi ≥ 0?
(A)
xi + 1 = xi+ 1
yi + 1 = yi
pi + 1 = pi + 4xi + 6
(B)
xi + 1 = xi + 1
yi + 1 = yi - 1
pi + 1 = pi + 4(xi - yi) + 10
(C)
xi + 1 = xi
yi + 1 = yi - 1
pi + 1 = pi + 4(xi - yi) + 6
(D)
xi + 1 = xi - 1
yi + 1 = yi
pi + 1 = pi + 4(xi - yi) + 10
Answer
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