def __init__(self, num_sides, radius):
GPolygon.__init__(self)
dx = -radius
dy = 0
self.addVertex(dx, dy)
da = 360 / num_sides
edge = math.sin(da / 2 * math.pi / 180) * radius * 2
angle = 0
for i in range(num_sides):
self.addPolarEdge(edge, angle)
angle -= da
def __init__(self, nSides, radius):
'''
Creates a regular polygon with its reference point at the center.
The nSides parameter indicates the number of sides and radius
parameter indicates the distance from the reference point to any
vertex.
'''
GPolygon.__init__(self)
edge = 2 * radius * math.sin((math.pi / nSides))
d_ang = 360 / nSides
self.addVertex(edge / 2, radius)
angle = 180
for i in range(nSides):
self.addPolarEdge(edge, angle)
angle -= d_ang
def __init__(self, nSides, radius):
"""
Initializes the Regular Polygon of the given perameters. The reference point is the center of the shape.
"""
GPolygon.__init__(self)
self.nSides = nSides
self.radius = radius
theta = radians(360 / self.nSides)
interiorTheta = radians(((self.nSides - 2) * 180) / self.nSides)
sideLen = 2 * self.radius * sin(theta / 2)
self.addVertex(-sideLen / 2, self.radius * cos(theta / 2))
newTheta = 0
for i in range(self.nSides - 1):
self.addPolarEdge(sideLen, degrees(newTheta))
newTheta += (pi - interiorTheta)