clipLine cross2Beeline cross2Line cross2LineV crossLineAbc crossLineBeeline isBetweenLine isBetweenLine2 isBetweenLine3 isColinear isColinear2 isConvex isIntersect isIntersectProp isLeft isLeft2 isLeftOn isLeftOn2 isProjectBetweenLine isProjectBetweenRayline ptInArea PtInAreaRet ptToBeeline ptToBeeline2 ptToLine

isBetweenLine() bool mglnrel::isBetweenLine ( const Point2d &  a, const Point2d &  b, const Point2d &  pt  ) static 判断点pt是否在线段ab上(闭区间) 参数 [in] a 线段的起点 [in] b 线段的终点 [in] pt 给定的测试点 返回 在线段上时返回true，否则返回false 函数调用图: 这是这个函数的调用关系图: