def __init__(self, data, color=None, **kargs):
from gui.drawable import saneColor
Actor.__init__(self)
self.object = data
self.color = saneColor(color)
self.samplingTolerance = 1.0
def __init__(self,control,knots=None,closed=False,order=0,color=black):
Actor.__init__(self)
self.closed = closed
nctrl = len(control)
if order <= 0:
if knots is None:
order = min(nctrl,3)
else:
order = len(knots) - nctrl
if order <= 0:
raise ValueError,"Length of knot vector (%s) must be larger than number of control points (%s)" % (len(knots),nctrl)
if closed:
if knots is None:
nextra = order-1
else:
nextra = len(knots) - nctrl - order
#print len(knots)
#print nctrl
print "extra %s" % nextra
control = Coords.concatenate([control[-nextra:],control])
nctrl = len(control)
#print nctrl
if nctrl < order:
raise ValueError,"Number of control points (%s) must not be smaller than order (%s)" % (nctrl,order)
if knots is None:
if closed:
knots = unitRange(nctrl+order)
else:
knots = concatenate([[0.]*(order-1),unitRange(nctrl-order+2),[1.]*(order-1)])
nknots = len(knots)
if nknots != nctrl+order:
raise ValueError,"Length of knot vector (%s) must be equal to number of control points (%s) plus order (%s)" % (nknots,nctrl,order)
print "Nurbs curve of order %s with %s control points and %s knots" % (order,nctrl,nknots)
self.control = control
self.knots = knots
self.order = order
self.closed = closed
self.samplingTolerance = 1.0
self.color = color
print self.control
print self.knots