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# SPDX-License-Identifier: GPL-2.0-or-later
# Filename : external_contour.py
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Draws the external contour of the scene
from freestyle.chainingiterators import ChainPredicateIterator
from freestyle.predicates import (
AndUP1D,
ExternalContourUP1D,
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueBP1D,
TrueUP1D,
)
from freestyle.shaders import (
ConstantColorShader,
ConstantThicknessShader,
)
from freestyle.types import Operators
upred = AndUP1D(QuantitativeInvisibilityUP1D(0), ExternalContourUP1D())
Operators.select(upred)
bpred = TrueBP1D()
Operators.bidirectional_chain(ChainPredicateIterator(upred, bpred), NotUP1D(upred))
shaders_list = [
ConstantThicknessShader(3),
ConstantColorShader(0.0, 0.0, 0.0, 1),
]
Operators.create(TrueUP1D(), shaders_list)
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