CG-15-06-2020

In bresenham’s circle generation algorithms. If (x, y) is the current pixel position then the xvalue of the next pixel position is

• x

• x - 1

• x + 1

• x + 2

In circle drawing algorithm we use

• 4-Symmetry

• 2-Symmetry

• 8-Symmetry

• No Symmetry

In Bresenham’s circle algorithm, if points are generated from 90 degree to 45 degree and (x,y) are the Coordinate of last scan converted pixel then the next pixel coordinate is

a) (x+1,y+1)or(x-1,y-1) b) (x+1,y)or(x,y+1) c) d) (x+1,y)or(x+1,y-1)

• (x+1,y+1)or(x-1,y-1)

• (x+1,y)or(x,y+1)

• (x,y+1)or(x+1,y-1)

• (x+1,y)or(x+1,y-1)

In the generation of circle by Bresenham’s algorithm, it is simple to generate _______________

• All octants

• one octants first and other by successive reflection

• one octants first and other by successive rotation

• one octants first and other by successive translation

Mid -point circle drawing algorithm use the sign of a) Distance parameter b) decision parameter c) Describe point d) both a&b

• Distance parameter

• decision parameter

• Describe point

• Both a&b

In Bresenham’s circle generation algorithm, if (x,y) is the current pixel position then the y value of the next pixel position is

• Y or y+1

• y alone

• y+1 or y-1

• y or y-1

There are two standard methods of mathematically representing a circle centered at the origin. They are?

• Polynomial Method, and Bresenham`s

• Polynomial Method, and Trigonometric Method

• Trigonometric Method and Bresenham`s

• DDA, and Bresenham`s

Bresanham circle algorithm uses the approach of a ______________.

A. Midpoint

B. Point

C. Line

D. None of these

• Midpoint

• Point

• Line

which of these is a characteristic of midpoint circle algorithm?

A. Produces pixel points for an semicircle

B. Produces pixel points for an quadrant

C. Produces pixel points for an octant

D. none of the above

• Produces pixel points for an semicircle

• Produces pixel points for an quadrant

• Produces pixel points for an octant

• none of the above

(2,4) is a point on a circle that has center at the origin. Which of the following points are also on circle ?

• (2,-4),(-2,4)

• (4,-2)

• (-4,2)

• All of above