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

clipLine() bool mglnrel::clipLine ( Point2d &  pt1, Point2d &  pt2, const Box2d &  box  ) static 用矩形剪裁线段，Sutherland-Cohen算法 参数 [in] pt1 线段的起点 [in] pt2 线段的终点 [in] box 剪裁矩形，必须为非空规范化矩形 返回 剪裁后是否有处于剪裁矩形内的线段部分 函数调用图: