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Why is clipping used in computer graphics?

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The primary use of clipping in computer graphics is to remove objects, lines, or line segments that are outside the viewing pane. read more

But in 3d computer graphics clipping becomes essential. In 3d graphics, 3d vertices are projected to 2d screen coordinates. If we imagine a scene for a driving game. A 3d camera is pointing down a road. And the road is a single rectangular polygon. When we project the 4 x 3d vertices for the rectangle, two are in front of the camera, and two are behind. read more

Clipping, in the context of computer graphics, is a method to selectively enable or disable rendering operations within a defined region of interest. Mathematically, clipping can be described using the terminology of constructive geometry. read more

The primary use of clipping in computer graphics is to remove objects, lines, or line segments that are outside the viewing pane. The viewing transformation is insensitive to the position of points relative to the viewing volume − especially those points behind the viewer − and it is necessary to remove these points before generating the view. read more

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Clipping Algorithm In Computer Graphics
Source: slideshare.net

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