:ƽθ

ʽ:
[x,y]=GetRegularPolygonXY(n,l,x0,y0)
[x,y]=GetRegularPolygonXY(n,l,x0)
[x,y]=GetRegularPolygonXY(n,l)
[x,y]=GetRegularPolygonXY(n)

n:ʾεı,ֵС3
l:εı߳,ֵ0
x0:εĺ,ĬΪ0
y0:ε,ĬΪ0

x:ص1*nľ,
y:ص1*nľ,

:

//һ߳Ϊ86,Ϊ(2,4)

[x,y]=GetRegularPolygonXY(6,8,2,4)//سõ½
x =
[ 4.00000000000000    3.00000000000000    1.00000000000000    2.2204460492E-16    0.99999999999999    3.00000000000000 ]
y =
[ 4.00000000000000    5.73205080756888    5.73205080756888    4.00000000000000    2.26794919243112    2.26794919243112 ]