Clipping: Liang-Barsky Line Clipping

Overview of Steps

  1. Express line segments in parametric form
  2. Derive equations for testing if a point is inside the window
  3. Compute new parameter values for visible portion of line segment, if any
  4. Display visible portion of line segment

The relative speed improvement over Sutherland-Cohen algorithm is as follows:

36% for 2D lines
40% for 3D lines
70% for 4D lines

Clipping Techniques: 2D
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Last changed May 13, 1998, G. Scott Owen,