# Sketch - A Python-based interactive drawing program
# Copyright (C) 1998, 1999, 2000, 2003 by Bernhard Herzog
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
###Sketch Config
#type = PluginCompound
#class_name = 'RegularPolygon'
#menu_text = 'Regular Polygon'
#parameters = (\
# ('vertices', 'int', 6, (3, None), 'Vertices'), \
# ('radius', 'length', 72.0, (0.0, None), 'Radius'))
#standard_messages = 1
###End
(''"Regular Polygon")
(''"Vertices")
(''"Radius")
from math import pi
from Sketch import Polar,TrafoPlugin,PolyBezier,CreatePath,ContAngle
class RegularPolygon(TrafoPlugin):
class_name = 'RegularPolygon'
is_curve = 1
def __init__(self, vertices = 5, radius = 50.0, trafo = None, loading = 0,
duplicate = None):
TrafoPlugin.__init__(self, trafo = trafo, duplicate = duplicate)
if duplicate is not None:
self.vertices = duplicate.vertices
self.radius = duplicate.radius
else:
self.vertices = vertices
self.radius = radius
if not loading:
self.recompute()
def recompute(self):
path = CreatePath()
vertices = self.vertices
radius = self.radius
twopi = 2 * pi
halfpi = pi / 2
for i in range(vertices + 1):
path.AppendLine(Polar(radius, (twopi * i) / vertices + halfpi),
ContAngle)
path.ClosePath()
path.Transform(self.trafo)
if self.objects:
self.objects[0].SetPaths((path,))
else:
self.set_objects([PolyBezier((path,))])
def Vertices(self):
return self.vertices
def Radius(self):
return self.radius
def SaveToFile(self, file):
TrafoPlugin.SaveToFile(self, file, self.vertices, self.radius,
self.trafo.coeff())
def Info(self):
return _("Regular Polygon: %(vertices)d vertices, "
"radius %(radius)[length]"), self.__dict__
def AsBezier(self):
return self.objects[0].AsBezier()
def Paths(self):
return self.objects[0].Paths()
|