以正17边形的绘制为例，说明了如何在\foreach循环中使用[evaluate=...]参数实现数学运算，以简化操作，如:

\foreach \p [evaluate=\p as \k using {int(mod(\p,17))},%
                 evaluate=\p as \i using {int(mod(\p-3,17))},%
                 evaluate=\p as \j using {int(mod(\p+3,17))}] in {3,6,...,48}%
    {
      \tkzInterCC(O,A)(P\k,P\i)\tkzGetPoints{P\j}{X}
      \tkzDrawSegment[cl](P\k,P\i)
      \tkzCompass[delta=5](P\k,P\j)
    }
    \foreach \p [evaluate=\p as \k using {int(mod(\p,17))},
                 evaluate=\p as \i using {int(mod(\p-1,17))}] in {1,...,17}%
    {
      \tkzDrawSegment[rl](P\k,P\i)
      \tkzDrawPoint[cpt](P\k)
    }

Happy TikZing!