import rhinoscriptsyntax as rs
import random as ran

#cleanup and start from scratch
rs.DeleteObjects(rs.AllObjects())

#variables
xsize=10           #xside length of box
ysize=10           #yside length of box 
zsize=10           #zside length of box

p_num=20           #number of segments

rs.EnableRedraw(False)

#make box
def make_box(insertion=[0,0,0],xsize=10,ysize=10,zsize=10):
    corners=[[0,0,0],[xsize,0,0],[xsize,ysize,0],[0,ysize,0],
               [0,0,zsize],[xsize,0,zsize],[xsize,ysize,zsize],[0,ysize,zsize]]
    box=rs.AddBox(corners)
    rs.MoveObject(box,(-xsize/2,-ysize/2,0))
    rs.MoveObject(box,insertion)
    return(box)

crv=rs.AddCurve([[0,0,0],[50,0,20],[70,40,30],[100,0,0]],3)
c_len=rs.CurveLength(crv)
seg_len=c_len/p_num     #segment length
pts=rs.DivideCurveEquidistant(crv,seg_len,create_points=True,return_points=True)

for p in pts:
    rs.AddCircle(p,seg_len)
    param=rs.CurveClosestPoint(crv,p)
    normal=rs.CurveTangent(crv,param)       #find tangent of point
    t_angle=rs.Angle([0,0,0],normal)[0]     #find angle of tangent
    box=make_box(p,xsize=seg_len,ysize=4*seg_len,zsize=seg_len/4)
    rs.RotateObject(box,p,t_angle,[0,0,1])

#cleanup
rs.Command("_SelCrv _Enter")
crvs=rs.SelectedObjects()
#rs.DeleteObjects(crvs)

rs.EnableRedraw(True)