计算分形维数，里面提供了分线法、盒维法和三角棱柱法。-Calculate the fractal dimension, which provides a sub-line method, box dimension method and the triangular prism method.

二维无限长介质圆柱、椭圆柱、方柱、三角柱 TM极化下的电磁流分布和双站RCS计算(矩量法) 参考文献：哈林登《计算电磁场的矩量法》第三章 点选配-Two-dimensional infinite dielectric cylinder, elliptical cylinder, square columns, triangular prism TM polarization of the electromagnetic flow distribution and bistatic RCS