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 algorithm of common use ray algorithm to determine the area of area of the algorithm is optimized, improves the operation speed.