def create_star_path(corners, outer_radius, inner_radius):
outer_radius = unit.convert(outer_radius)
inner_radius = unit.convert(inner_radius)
path = CreatePath()
angle = math.pi * 2 / corners
for i in range(corners):
path.AppendLine(Polar(outer_radius, angle * i))
path.AppendLine(Polar(inner_radius, angle * i + angle / 2))
path.AppendLine(path.Node(0))
path.ClosePath()
return path
def create_star_path(corners, outer_radius, inner_radius):
outer_radius = unit.convert(outer_radius)
inner_radius = unit.convert(inner_radius)
path = CreatePath()
angle = math.pi * 2 / corners
for i in range(corners):
path.AppendLine(Polar(outer_radius, angle * i))
path.AppendLine(Polar(inner_radius, angle * i + angle / 2))
path.AppendLine(path.Node(0))
path.ClosePath()
return path
def create_spiral_path(rotation, radius):
r = unit.convert(radius)
rate = r / (rotation * 2 * pi)
def tangent(phi, a=0.55197 * rate):
return a * Point(cos(phi) - phi * sin(phi), sin(phi) + phi * cos(phi))
pi2 = pi / 2.0
angle = 0
tang = tangent(0)
path = CreatePath()
p = Point(0, 0)
path.AppendLine(p)
for i in range(rotation * 4):
p1 = p + tang
angle = pi2 * (i + 1)
p = Polar(rate * angle, angle)
tang = tangent(angle)
p2 = p - tang
path.AppendBezier(p1, p2, p, ContSymmetrical)
return path
def create_spiral_path(rotation, radius):
r = unit.convert(radius)
rate = r / (rotation * 2 * pi)
def tangent(phi, a = 0.55197 * rate):
return a * Point(cos(phi) - phi * sin(phi),
sin(phi) + phi * cos(phi))
pi2 = pi / 2.0
angle = 0
tang = tangent(0)
path = CreatePath()
p = Point(0, 0)
path.AppendLine(p)
for i in range(rotation * 4):
p1 = p + tang
angle = pi2 * (i + 1)
p = Polar(rate * angle, angle)
tang = tangent(angle)
p2 = p - tang
path.AppendBezier(p1, p2, p, ContSymmetrical)
return path
