Stadium design - Rhino Python

Hi, this is one of my works using rhinocesros3d python srcipt, I have also made a tutorial for making this stadium covering using grasshopper but it is arabic narrated. 

Here is the code : 

import rhinoscriptsyntax as rs

def curve(p1, p2, param = 0.5, pointheight=5.0):

    points = []

    

    rs.AddPoint(p1)

    rs.AddPoint(p2)

    

    l1= rs.AddLine(p1, p2)

    

    v1 = rs.VectorCreate(p2, p1)

    v3 = (0,0,0)

    p1 = rs.CurveParameter(l1, param)

     

    midpoint = rs.EvaluateCurve(l1, p1)

    rs.AddPoint(midpoint)

    

    

    vec2 = (v1[2], v1[1], - v1[0])

    vec2 = rs.VectorUnitize(vec2)

    vec2 *= -pointheight

    vec2 = rs.VectorAdd(vec2, midpoint)

    

    l3 = rs.AddLine(vec2, midpoint)

    p3 = rs.AddPoint(vec2)

    points = (v1, vec2, v3)

    

    c1 = rs.AddInterpCurve(points)

    return c1

p1 = (0,0,0)

p2 = (30.0,0, 10)

c1 = curve(p1, p2, 0.2, 7.)

c2 = curve(p1, p2, 0.2, 20.)

c3 = curve(p1, p2, 0.2, 20.)

newl = rs.VectorCreate(p2,p1)

c2 = rs.RotateObject(c2, p1, 50.0, newl)

c3 = rs.RotateObject(c3, p2, -50.0, newl)

points1 = rs.DivideCurve(c1, 20, True, True)

points2 = rs.DivideCurve(c2, 20, True, True)

points3 = rs.DivideCurve(c3, 20, True, True)

newcurves = []

for i in range(len(points1)):

    pointlist = points2[i], points1[i], points3[i]

    newc = rs.AddInterpCurve(pointlist)

    newcurves.append(newc)

axis = rs.VectorCreate((100, 0, 20), (100, 0, 0))

for i in range(20):

    pipe = rs.AddPipe(c2, 0, 0.5)

    pipe2 = rs.AddPipe(c3, 0, 0.5)

    surfaces = rs.AddLoftSrf(newcurves)

    rs.RotateObject(surfaces,(100, 0, 0), (360./20)*i, axis)

    rs.RotateObject(pipe,(100, 0, 0), (360./20)*i, axis)

    rs.RotateObject(pipe2,(100, 0, 0), (360./20)*i, axis)

c4 = rs.RotateObject(c3,(100, 0, 0), (360./20), axis)

newcurves2 = (c2, c4)

for i in range(20):

    newsurf = rs.AddLoftSrf(newcurves2)

    rs.RotateObject(newsurf,(100, 0, 0), (360./20.)*i, axis)

and here is the grasshopper tutorial: