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

isConvex() bool mglnrel::isConvex ( int  count, const Point2d *  vertexs, bool *  acw = (bool*)0  ) static 判断多边形是否为凸多边形 参数 [in] count 顶点个数 [in] vertexs 顶点数组 [out] acw 多边形是否为逆时针方向，为NULL则忽略该参数 返回 是否为凸多边形