40 lines
1.2 KiB
Python
40 lines
1.2 KiB
Python
# SPDX-FileCopyrightText: 2008-2023 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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# Author : Stephane Grabli
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# Date : 04/08/2005
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# Purpose : Use the sequential split with two different
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# predicates to specify respectively the starting and
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# the stopping extremities for strokes
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from freestyle.chainingiterators import ChainSilhouetteIterator
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from freestyle.predicates import (
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NotUP1D,
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QuantitativeInvisibilityUP1D,
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TrueUP1D,
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pyBackTVertexUP0D,
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pyVertexNatureUP0D,
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)
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from freestyle.shaders import (
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ConstantColorShader,
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IncreasingThicknessShader,
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SpatialNoiseShader,
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)
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from freestyle.types import Nature, Operators
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upred = QuantitativeInvisibilityUP1D(0)
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Operators.select(upred)
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Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(upred))
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# starting and stopping predicates:
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start = pyVertexNatureUP0D(Nature.NON_T_VERTEX)
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stop = pyBackTVertexUP0D()
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Operators.sequential_split(start, stop, 10)
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shaders_list = [
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SpatialNoiseShader(7, 120, 2, True, True),
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IncreasingThicknessShader(5, 8),
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ConstantColorShader(0.2, 0.2, 0.2, 1),
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]
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Operators.create(TrueUP1D(), shaders_list)
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