COMPUTER SCIENCE AND ENGINEERING
COMPUTER GRAPHICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Rotation angle
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Distances dx and dy
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Rotation distance
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All of the mentioned
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Detailed explanation-1: -Explanation: Generate a rotation, we must specify rotation angle of the rotation point or pivot point which the object is to be rotated. Explanation: A positive value for the rotation angle defines counterclockwise rotations about the pivot point.
Detailed explanation-2: -To generate a rotation, we specify a rotation angle and the position (xr, yr) of the rotation point (or pivot point) about which the object is to be rotated (Fig. 5-3). Positive values for the rotation angle define counter clockwise rotations about the pivot point, as in Fig.
Detailed explanation-3: -Answer : C, Explanation-Positive values for the rotation angle defines Counterclockwise rotations about the piovt points.
Detailed explanation-4: -The positive value of the pivot point (rotation angle) rotates an object in a counter-clockwise (anti-clockwise) direction. The negative value of the pivot point (rotation angle) rotates an object in a clockwise direction.
Detailed explanation-5: -Rotation is another useful transformation technique in computer graphics in this, the rotation of an object is about specified pivot point. In rotation, the object is rotated about the origin.