def EndPolyline():
global Entities, Vertices
count = len(Entities) - 1
part = curve.PolyLine(Vertices).setProp(count)
part.dxftype = 'Polyline'
Entities[-1] = part
Vertices = []
def run():
linewidth(2)
clear()
flat()
draw(origin())
draw(F, color=blue)
drawNumbers(F, color=blue)
draw(PL, color=red)
draw(PL.coords, color=red)
drawNumbers(PL.coords, color=red)
return
if ack("Spread point evenly?"):
at = PL.atLength(PL.nparts)
X = PL.pointsAt(at)
PL2 = curve.PolyLine(X)
clear()
draw(PL2, color=blue)
draw(PL2.coords, color=blue)
def show():
"""Accept the data and draw according to them"""
clear()
dialog.acceptData()
globals().update(dialog.results)
PL = createSpiralCurve(turns, nmod)
drawSpiralCurves(PL, nwires, red, blue)
if spread:
at = PL.atLength(PL.nparts)
X = PL.pointsAt(at)
PL = curve.PolyLine(X)
clear()
drawSpiralCurves(PL, nwires, blue, red)
if sweep:
CS = createCrossSection()
draw(CS)
draw(CS)
wait()
structure = CS.sweep(PL,
normal=[1., 0., 0.],
upvector=eval(cross_upvector),
avgdir=True)
clear()
smoothwire()
draw(structure, color='red', bkcolor='cyan')
if nwires > 1:
structure = structure.toFormex().rosette(nwires,
360. / nwires).toMesh()
draw(structure, color='orange')
if flyalong:
flyAlong(PL.scale(1.1).trl([0.0, 0.0, 0.2]),
upvector=[0., 0., 1.],
sleeptime=0.1)
view('front')
def createSpiralCurve(turns, nmod):
F = Formex(origin()).replic(nmod, 1., 0).scale(turns * 2 * pi / nmod)
a, b, c = coeffs
rfunc_defs = {
'constant': lambda x: a,
'linear (Archimedes)': lambda x: a + b * x,
'quadratic': lambda x: a + b * x + c * x * x,
'exponential (equi-angular)': lambda x: a + b * exp(c * x),
# 'custom' : lambda x: a + b * sqrt(c*x),
}
rf = rfunc_defs[rfunc]
if spiral3d:
zf = lambda x: spiral3d * rf(x)
else:
zf = lambda x: 0.0
S = spiral(F.coords, [0, 1, 2], rf, zf)
PL = curve.PolyLine(S[:, 0, :])
return PL
nwires = 6
phi = 30.
alpha2 = 70.
c = 1.
a = c * tand(phi)
b = tand(phi) / tand(alpha2)
zf = lambda x: c * exp(b * x)
rf = lambda x: a * exp(b * x)
S = spiral(F.coords, [0, 1, 2], rf) #.rosette(nwires,360./nwires)
PL = curve.PolyLine(S[:, 0, :])
def run():
linewidth(2)
clear()
flat()
draw(origin())
draw(F, color=blue)
drawNumbers(F, color=blue)
draw(PL, color=red)
draw(PL.coords, color=red)
drawNumbers(PL.coords, color=red)
return
if ack("Spread point evenly?"):