Question 7688 – UGC-NET DEC-2019 Part-2
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Consider the Bresenham’s line generation algorithm for a line with gradient greater than one, current point (xi, yi) and decision parameter, di. The next point to be plotted (xi+1, yi+1) and updated decision parameter, di+1, for di < 0 are given as _______.
Correct Answer: B
Question 15 Explanation:
xi+1 = xi +1
yi+1 = yi
di+1 = di+ 2 dy
yi+1 = yi
di+1 = di+ 2 dy
xi+1 = xi
yi+1 = yi +1
di+1 = di+ 2 dx
yi+1 = yi +1
di+1 = di+ 2 dx
xi+1 = xi
yi+1 = yi +1
di+1 = di+ 2(dx -dy)
yi+1 = yi +1
di+1 = di+ 2(dx -dy)
xi+1 = xi +1
yi+1 = yi +1
di+1 = di+ 2(dy -dx)
yi+1 = yi +1
di+1 = di+ 2(dy -dx)
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