forked from bartvdbraak/blender
57 lines
2.5 KiB
Python
57 lines
2.5 KiB
Python
# ##### BEGIN GPL LICENSE BLOCK #####
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software Foundation,
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# ##### END GPL LICENSE BLOCK #####
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# Filename : japanese_bigbrush.py
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# Author : Stephane Grabli
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# Date : 04/08/2005
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# Purpose : Simulates a big brush fr oriental painting
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from freestyle import BezierCurveShader, ChainSilhouetteIterator, ConstantColorShader, \
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ConstantThicknessShader, IntegrationType, Operators, QuantitativeInvisibilityUP1D, \
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SamplingShader, TextureAssignerShader, TipRemoverShader
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from Functions0D import pyInverseCurvature2DAngleF0D
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from PredicatesB1D import pyLengthBP1D
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from PredicatesU0D import pyParameterUP0D
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from PredicatesU1D import pyDensityUP1D, pyHigherLengthUP1D, pyHigherNumberOfTurnsUP1D
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from logical_operators import NotUP1D
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from shaders import pyNonLinearVaryingThicknessShader, pySamplingShader
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Operators.select(QuantitativeInvisibilityUP1D(0))
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Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
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## Splits strokes at points of highest 2D curavture
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## when there are too many abrupt turns in it
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func = pyInverseCurvature2DAngleF0D()
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Operators.recursive_split(func, pyParameterUP0D(0.2, 0.8), NotUP1D(pyHigherNumberOfTurnsUP1D(3, 0.5)), 2)
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## Keeps only long enough strokes
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Operators.select(pyHigherLengthUP1D(100))
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## Sorts so as to draw the longest strokes first
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## (this will be done using the causal density)
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Operators.sort(pyLengthBP1D())
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shaders_list = [
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pySamplingShader(10),
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BezierCurveShader(30),
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SamplingShader(50),
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ConstantThicknessShader(10),
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pyNonLinearVaryingThicknessShader(4, 25, 0.6),
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TextureAssignerShader(6),
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ConstantColorShader(0.2, 0.2, 0.2,1.0),
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TipRemoverShader(10),
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]
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## Use the causal density to avoid cluttering
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Operators.create(pyDensityUP1D(8, 0.4, IntegrationType.MEAN), shaders_list)
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