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#                                                                             #

# This file is part of a style sheet example from the Freestyle application   #

# Copyright (C) 2001-2005  Stephane Grabli                                    #

#                                                                             #

# http://freestyle.sourceforge.net                                            #

#                                                                             #

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from Freestyle import *
from logical_operators import *
from PredicatesU1D import *
from shaders import *
from ChainingIterators import *


id_list = [Id(0,0)]

upred = AndUP1D(QuantitativeInvisibilityUP1D(0), pyNatureUP1D(SILHOUETTE))

bpred = SameShapeIdBP1D()

Operators.select(NotUP1D(pyShapeIdUP1D(id_list)))

Operators.select(upred)

Operators.bidirectionalChain(ChainPredicateIterator(upred, bpred))

shaders_list = 	[

		IncreasingColorShader(0.6, 0.6, 0.6, 0.4, 0.2, 0.2, 0.2, 0.4), 

		SamplingShader(4),

		TextureAssignerShader(6),

		IncreasingThicknessShader(2, 10),

		SmoothingShader(20, 0.1, 0, 0.2, 0, 0, 0, 1)

		]

Operators.create(TrueUP1D(), shaders_list)