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Diffstat (limited to 'release/scripts/freestyle/style_modules/PredicatesU0D.py')
-rw-r--r-- | release/scripts/freestyle/style_modules/PredicatesU0D.py | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/release/scripts/freestyle/style_modules/PredicatesU0D.py b/release/scripts/freestyle/style_modules/PredicatesU0D.py new file mode 100644 index 00000000000..49675eb3c6a --- /dev/null +++ b/release/scripts/freestyle/style_modules/PredicatesU0D.py @@ -0,0 +1,96 @@ +# ##### 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 |