Line clipping algorithms

Line clipping algorithms are techniques used in computer graphics to determine which portions of a line segment lie within a specified rectangular region, often referred to as a clipping window. The primary goal of these algorithms is to efficiently render only the visible part of line segments when displaying graphics on a screen or within a graphical user interface. Clipping is essential in reducing the amount of processed data and improving rendering performance.

The Cohen–Sutherland algorithm is a computer graphics algorithm used for line clipping in a 2D space. It efficiently determines which portions of a line segment are within a specified rectangular clipping window and which portions are outside it. The algorithm is named after its inventors, Daniel Cohen and Ivan Sutherland, who introduced it in 1967. ### Key Concepts 1.

The Cyrus–Beck algorithm is a method used in computer graphics for line clipping against convex polygonal regions. It is particularly effective for clipping lines against convex polygons, such as rectangles or any other simple polygons. The algorithm was introduced by John Cyrus and Barbara Beck in 1979 as an extension of the Liang–Barsky algorithm, which is primarily used for line clipping against axis-aligned rectangles.

The Liang–Barsky algorithm is an efficient method for line clipping in computer graphics. It is specifically used to determine the portion of a line segment that is visible within a rectangular clipping window. This algorithm is notable for its use of parametric line equations and for being more efficient compared to traditional algorithms, such as the Cohen–Sutherland algorithm. ### How it Works: The Liang–Barsky algorithm utilizes the parametric representation of a line segment.

The Nicholl–Lee–Nicholl (NLN) algorithm is a method used for encoding and decoding data, particularly in the context of lossless image and video compression. It is known for its efficient handling of image data by leveraging the geometric properties of images.