matlab，SutherlandHodgeman等算法进行多边形被矩形截

可以实现任意多边形定点参数输入然后使用SutherlandHodgeman等算法进行多边形被矩形截

function p0=findmiddlepoint（p1p2zonepoint）
p0=（p1+p2）/2;   %find the middle point;
codep0=getzonecode（zonepointp0）;
codep1=getzonecode（zonepointp1）;
codep2=getzonecode（zonepointp2）;
while codep0~=0     %if the middle point is not in the area continue to find it
    p0=（p1+p2）/2;   %find the middle point;
    codep0=getzonecode（zonepointp0）;
    if codep0==0    %this point is in the area break;
        break;
    else    %this p0 is not in the area
        judge1=bitand（codep0codep1）;
        if judge1~=0     %means the p1 can be replaced by p0
            p1=p0;
        else p2=p0;
        end
    end
end
        

 属性            大小     日期    时间   名称
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     文件      66048  2007-11-09 00:35  polygon_cut\Cyrus-Beck算法截取线段.vsd

     文件        647  2007-11-09 14:55  polygon_cut\findmiddlepoint.asv

     文件        647  2007-11-09 17:07  polygon_cut\findmiddlepoint.m

     文件        558  2007-11-09 16:12  polygon_cut\getzonecode.m

     文件        833  2007-11-09 16:48  polygon_cut\intersectp.asv

     文件        838  2007-11-09 16:48  polygon_cut\intersectp.m

     文件       9736  2007-11-09 21:36  polygon_cut\Polygoncutter.asv

     文件       4197  2007-11-09 21:14  polygon_cut\Polygoncutter.fig

     文件       9790  2007-11-09 22:03  polygon_cut\Polygoncutter.m

     文件      58880  2007-11-09 01:07  polygon_cut\Sutherland-Hodgman多边形剪裁流程框图.vsd

     文件       1361  2007-11-09 19:55  polygon_cut\Sutherland_Hodgeman_Algorithum.asv

     文件       1361  2007-11-09 19:55  polygon_cut\Sutherland_Hodgeman_Algorithum.m

     文件      74752  2007-11-09 16:53  polygon_cut\中点法截取线段流程图.vsd

     文件      29696  2007-11-09 21:43  polygon_cut\计算机图形学第三次作业Readme.doc

     目录          0  2007-11-13 18:25  polygon_cut

     文件        218  2007-06-05 03:14  www.pudn.com.txt

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