34 lines
1.0 KiB
Python
34 lines
1.0 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 : Draws strokes that starts and stops at Tvertices (visible or not)
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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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pyVertexNatureUP0D,
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)
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from freestyle.shaders import (
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ConstantThicknessShader,
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IncreasingColorShader,
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)
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from freestyle.types import Nature, Operators
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Operators.select(QuantitativeInvisibilityUP1D(0))
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Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
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start = pyVertexNatureUP0D(Nature.T_VERTEX)
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# use the same predicate to decide where to start and where to stop
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# the strokes:
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Operators.sequential_split(start, start, 10)
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shaders_list = [
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ConstantThicknessShader(5),
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IncreasingColorShader(1, 0, 0, 1, 0, 1, 0, 1),
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]
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Operators.create(TrueUP1D(), shaders_list)
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