"CS 455 - 计算机图形学中的线条生成算法"

Computer graphics is a fundamental aspect of digital technology, and one of its key concepts is line drawing. Line drawing in computer graphics involves the process of determining which pixels to illuminate on a raster display, a critical step due to the scanning nature of such displays. The algorithms for line drawing are essential not only in 2-D graphics but also in 3-D graphics, as they involve transforming continuous lines into discrete pixels through sampling. In the early days of computer graphics, line drawing was relatively straightforward for vector displays. However, the development of incremental line-drawing algorithms and other scan-conversion techniques became necessary as raster displays became more prevalent. Many of these algorithms were initially developed for pen-plotters, with Jack Bresenham being a prominent figure in this field. Some of the key algorithms for line drawing in computer graphics include the Digital Differential Analyzer (DDA), the Midpoint algorithm, and Bresenham's line algorithm. These algorithms play a crucial role in determining the most efficient and accurate ways to render lines on a digital display. In summary, line drawing is a fundamental aspect of computer graphics, with its scan-conversion and rasterization techniques being essential for transforming continuous lines into discrete pixels. The development of incremental line-drawing algorithms has been crucial for the advancement of computer graphics, with figures like Bresenham making significant contributions to this field. Understanding these algorithms is vital for anyone studying or working in the field of computer graphics.