(self  , row , line )
return self.distance_map[row][line]
function:
            下半角矩阵 ， 转换坐标
function:
            下半角矩阵 ， 转换坐标
function : 下半角矩阵 ， 转换坐标
def get_distance_by_index(self  , row , line ):
        '''
        function:
            下半角矩阵 ， 转换坐标

        '''
        if line > row :
            tmp = row 
            row = line 
            line = tmp  
        return self.distance_map[row][line]
def get_distance_by_index ( self , row , line ) : if line > row : tmp = row row = line line = tmp return self . distance_map [ row ] [ line ]