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请教一个计算几何的初级问题,CLRS 上的 判断点在线段上的函数 ON_SEGMENT(pi,pj,pk) 返回pk 是否在线段pipj上(详内)

Posted by sunmoonstar_love at 2005-07-21 23:58:30
 

 ON-SEGMENT(pi,pj,pk)

  if min(xi,xj) <= xk <= max(xi,xj) and min(yi,yj) <= yk <= max(yi,yj)

  then return true;

  else return false;


他为什么这么写?我觉得这是判断点pk是否在以pipj为对角线的矩形内的函数?  请教,谢谢

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