MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPUTER GRAPHICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Clipping in computer graphics is primarily used for
A
zooming
B
copying
C
removing objects and lines
D
All of the above
Explanation: 

Detailed explanation-1: -Answer: b Explanation: The primary use of clipping in computer graphics is to remove objects, lines, or line segments that are outside the viewing pane.

Detailed explanation-2: -Answer: d Explanation: Clipping is a technique for removing objects, lines, and line segments that are outside of the viewing pane.

Detailed explanation-3: -So, clipping is a procedure that identifies those portions of a picture that are either inside or outside of our viewing pane. In case of point clipping, we only show/print points on our window which are in range of our viewing pane, others points which are outside the range are discarded.

Detailed explanation-4: -To clip a polygon, we cannot directly apply a line-clipping method to the individual polygon edges because this approach would produce a series of unconnected line segments as shown in figure .

Detailed explanation-5: -Viewing-frustum culling is the process of removing from the rendering process those objects that lie completely outside the viewing frustum.

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