What is line clipping?

Line clipping is a computer graphics technique used to determine which portions of a line segment are visible within a specified viewing area or clipping region. It involves comparing the endpoints of the line against the boundaries of the clipping region to decide whether to draw the entire line, a part of it, or none at all. Common algorithms for line clipping include the Cohen-Sutherland and Liang-Barsky algorithms. These techniques help optimize rendering by avoiding the drawing of lines that fall outside the viewer's perspective.