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# SPDX-License-Identifier: GPL-2.0-or-later
# Filename : apriori_density.py
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Draws lines having a high a prior density
from freestyle.chainingiterators import ChainPredicateIterator
from freestyle.predicates import (
AndUP1D,
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueBP1D,
TrueUP1D,
pyHighViewMapDensityUP1D,
)
from freestyle.shaders import (
ConstantColorShader,
ConstantThicknessShader,
)
from freestyle.types import Operators
Operators.select(AndUP1D(QuantitativeInvisibilityUP1D(0), pyHighViewMapDensityUP1D(0.1, 5)))
bpred = TrueBP1D()
upred = AndUP1D(QuantitativeInvisibilityUP1D(0), pyHighViewMapDensityUP1D(0.0007, 5))
Operators.bidirectional_chain(ChainPredicateIterator(upred, bpred), NotUP1D(QuantitativeInvisibilityUP1D(0)))
shaders_list = [
ConstantThicknessShader(2),
ConstantColorShader(0.0, 0.0, 0.0, 1.0)
]
Operators.create(TrueUP1D(), shaders_list)
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