实现智能公交，电调出租车中常用的区域报警算法，对车辆位置是否在某区域中进行报警，该区域算法对常见的利用射线算法判定区域的算法进行了优化，提高了运算速度。-Intelligent public transportation, electricity area alarm algorithm is commonly used in the taxi, to call the police, whether vehicle location in the document domain algorit