def __init__(self, center, radius, start_angle, end_angle,
st=None, lt=None, col=None, th=None, **kw):
"""Initialize a Arc.
Arc(center, radius, start_angle, end_angle)
The center should be a Point, or a two-entry tuple of floats,
and the radius should be a float greater than 0.
"""
_cp = center
if not isinstance(_cp, point.Point):
_cp = point.Point(center)
_r = util.get_float(radius)
if not _r > 0.0:
raise ValueError, "Invalid radius: %g" % _r
_st = st
_sa = util.make_c_angle(start_angle)
_ea = util.make_c_angle(end_angle)
if _st is None:
_st = self.getDefaultStyle()
super(Arc, self).__init__(_st, lt, col, th, **kw)
self.__radius = _r
self.__sa = _sa
self.__ea = _ea
self.__center = _cp
_cp.connect('moved', self.__movePoint)
_cp.connect('change_pending', self.__pointChangePending)
_cp.connect('change_complete', self.__pointChangeComplete)
_cp.storeUser(self)
def __init__(self,
center,
radius,
start_angle,
end_angle,
st=None,
lt=None,
col=None,
th=None,
**kw):
"""Initialize a Arc.
Arc(center, radius, start_angle, end_angle)
The center should be a Point, or a two-entry tuple of floats,
and the radius should be a float greater than 0.
"""
_cp = center
if not isinstance(_cp, point.Point):
_cp = point.Point(center)
_r = util.get_float(radius)
if not _r > 0.0:
raise ValueError, "Invalid radius: %g" % _r
_st = st
_sa = util.make_c_angle(start_angle)
_ea = util.make_c_angle(end_angle)
if _st is None:
_st = self.getDefaultStyle()
super(Arc, self).__init__(_st, lt, col, th, **kw)
self.__radius = _r
self.__sa = _sa
self.__ea = _ea
self.__center = _cp
_cp.connect('moved', self.__movePoint)
_cp.connect('change_pending', self.__pointChangePending)
_cp.connect('change_complete', self.__pointChangeComplete)
_cp.storeUser(self)
def setEndAngle(self, angle):
"""Set the end_angle for the Arc.
setEndAngle(angle)
The argument angle should be a float.
"""
if self.isLocked():
raise RuntimeError, "Setting end angle not allowed - object locked."
_ea = self.__ea
_angle = util.make_c_angle(angle)
if abs(_ea - _angle) > 1e-10:
self.startChange('end_angle_changed')
self.__ea = _angle
self.endChange('end_angle_changed')
self.sendMessage('end_angle_changed', _ea)
_cx, _cy = self.__center.getCoords()
self.sendMessage('moved', _cx, _cy, self.__radius, self.__sa, _ea)
self.modified()
def setEndAngle(self, angle):
"""Set the end_angle for the Arc.
setEndAngle(angle)
The argument angle should be a float.
"""
if self.isLocked():
raise RuntimeError, "Setting end angle not allowed - object locked."
_ea = self.__ea
_angle = util.make_c_angle(angle)
if abs(_ea - _angle) > 1e-10:
self.startChange('end_angle_changed')
self.__ea = _angle
self.endChange('end_angle_changed')
self.sendMessage('end_angle_changed', _ea)
_cx, _cy = self.__center.getCoords()
self.sendMessage('moved', _cx, _cy, self.__radius, self.__sa, _ea)
self.modified()
