Line-Drawing Algorithms

Our first adventure into scan conversion.


Photo of an HP pen-plotter
  • Scan-conversion or rasterization
  • Due to the scanning nature of raster displays
  • Algorithms are fundamental to both
    2-D and 3-D computer graphics
  • Transforming the continuous into this discrete
    (sampling)
  • Line drawing was easy for vector displays
  • Most incremental line-drawing algorithms
    were first developed for pen-plotters

Most of the early scan-conversion algorithms developed
for plotters can be attributed to one man, Jack Bresenham.
Lecture 5   Slide 2   6.837 Fall '00