3 from __future__ import print_function
6 signal.signal(signal.SIGINT, signal.SIG_DFL)
21 ns = 4 # around tube, should be even
31 def dpr(v): return '%+3f %+3f %+3f' % tuple(v)
33 def points_round_wire(p, norm, acrs, sigmas):
35 delta = norm * sin(sigma) + acrs * cos(sigma)
36 r = p + wire/nomsize * delta
40 return [ (s + 0.5)/ns * tau for s in ss ]
42 def make_moebius(objname):
43 print('module %s(){' % objname)
45 extents = [ ScadObject() for w in range(0,nw) ] # along extents
46 travers = [ ScadObject() for v in range(0,nv) ] # along traverses
48 def qc(v, w, sigmas, is_trav):
49 #print(' QCv,w,T',v,w,is_trav, file=sys.stderr)
51 p, norm, extt, trav = m.details(v + ab*(not is_trav), w + ab*is_trav)
52 if is_trav: acrs = extt
54 #print(' RW,ab,sx',ab,sx,
60 # 'delta=',dpr(delta),
63 for r in points_round_wire(p, norm, acrs, sigmas):
66 for v in range(0, nv):
67 for w in range(0, nw+1):
68 for s in range(0, ns):
69 sigmas = calc_sigmas([s + sx for sx in (0,1)])
70 #print('VWS',v,w,s, sigmas, file=sys.stderr)
72 extents[w % nw].quad([ cnr for cnr in qc(v,w,sigmas,False) ])
73 if not v % each_v and w < nw:
74 travers[v].rquad([ cnr for cnr in qc(v,w,sigmas,True) ])
77 p, norm, extt, trav = m.details(v, w)
78 cnrs = points_round_wire(p, norm, extt, calc_sigmas(range(0,ns)))
81 for s in range(0, ns-1):
82 travers[v].triangle(cnrs[s],
86 for w in range(0, nw):
87 print('// extent w=', w)
88 extents[w].writeout_core(nomsize)
89 for v in range(0, nv):
90 print('// travers v=', v)
91 travers[v].writeout_core(nomsize)
94 make_moebius('MoebiusMesh')
95 print('moebiuscore_nomsize=%s;' % repr(nomsize))