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diff --git a/release/scripts/freestyle/style_modules/PredicatesU0D.py b/release/scripts/freestyle/style_modules/PredicatesU0D.py
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+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program 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 General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+#  Filename : PredicatesU0D.py
+#  Authors  : Fredo Durand, Stephane Grabli, Francois Sillion, Emmanuel Turquin 
+#  Date     : 08/04/2005
+#  Purpose  : Unary predicates (functors) to be used for 0D elements
+
+from Freestyle import Curvature2DAngleF0D, Nature, QuantitativeInvisibilityF0D, UnaryPredicate0D
+from Functions0D import pyCurvilinearLengthF0D
+
+class pyHigherCurvature2DAngleUP0D(UnaryPredicate0D):
+	def __init__(self,a):
+		UnaryPredicate0D.__init__(self)
+		self._a = a
+	def __call__(self, inter):
+		func = Curvature2DAngleF0D()
+		a = func(inter)
+		return (a > self._a)
+
+class pyUEqualsUP0D(UnaryPredicate0D):
+	def __init__(self,u, w):
+		UnaryPredicate0D.__init__(self)
+		self._u = u
+		self._w = w
+	def __call__(self, inter):
+		func = pyCurvilinearLengthF0D()
+		u = func(inter)
+		return (u > (self._u-self._w)) and (u < (self._u+self._w))
+
+class pyVertexNatureUP0D(UnaryPredicate0D):
+	def __init__(self,nature):
+		UnaryPredicate0D.__init__(self)
+		self._nature = nature
+	def __call__(self, inter):
+		v = inter.object
+		return (v.nature & self._nature) != 0
+
+## check whether an Interface0DIterator
+## is a TVertex and is the one that is 
+## hidden (inferred from the context)
+class pyBackTVertexUP0D(UnaryPredicate0D):
+	def __init__(self):
+		UnaryPredicate0D.__init__(self)
+		self._getQI = QuantitativeInvisibilityF0D()
+	def __call__(self, iter):
+		if (iter.object.nature & Nature.T_VERTEX) == 0:
+			return 0
+		if iter.is_end:
+			return 0
+		if self._getQI(iter) != 0:
+			return 1
+		return 0
+
+class pyParameterUP0DGoodOne(UnaryPredicate0D):
+	def __init__(self,pmin,pmax):
+		UnaryPredicate0D.__init__(self)
+		self._m = pmin
+		self._M = pmax
+		#self.getCurvilinearAbscissa = GetCurvilinearAbscissaF0D()
+	def __call__(self, inter):
+		#s = self.getCurvilinearAbscissa(inter)
+		u = inter.u
+		#print(u)
+		return ((u>=self._m) and (u<=self._M))
+
+class pyParameterUP0D(UnaryPredicate0D):
+	def __init__(self,pmin,pmax):
+		UnaryPredicate0D.__init__(self)
+		self._m = pmin
+		self._M = pmax
+		#self.getCurvilinearAbscissa = GetCurvilinearAbscissaF0D()
+	def __call__(self, inter):
+		func = Curvature2DAngleF0D()
+		c = func(inter)
+		b1 = (c>0.1)
+		#s = self.getCurvilinearAbscissa(inter)
+		u = inter.u
+		#print(u)
+		b = ((u>=self._m) and (u<=self._M))
+		return b and b1