Line clipping procedure is the mechanism that tells how to cut off the lines which are outside the clipping window [1], [2], [5]. The line clipping procedure can be broadly classified into three disjoint classes. Class-1 contains the lines which are completely inside the clipping window and therefore are trivially accepted. Class-2 contains the lines which are partially inside the clipping window, for these lines we have no options but to divide the lines into segments at the intersections of the line and clipping window edges and then examine each segment that whether the segment is completely inside or completely outside the clipping window. Class-3 contains the lines which are completely outside the clipping window, and therefore are trivially rejected. This paper focuses on the lines which are trivially rejected. [download]
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