polygon clipping algorithm

Weiler-Atherton Polygon Clipping

1.      Problem of Sutherland-Hodgeman clipping

–Displaying extraneous line 

Other Polygon-Clipping Algorithm

1.      Extending parametric line-clipping method

–Well suited for convex polygon-clipping

–Using region testing procedures

2.      Clipping a polygon by determining the  intersection of two polygon areas