Line Clipping

Assume that your task is to clip a line segment given by the endpoints (x1,y1) and (x2,y2) against a clipping window given by [xmin .. xmax] to [ymin .. ymax].

a) Describe how the Cohen-Sutherland outcodes are calculated.

b) How can you determine that a line segment is fully inside the clipping window?

c) How can you determine that a line segment is fully outside the clipping window?

d) How can you determine that a line segment must be clipped against the x=xmin line?