Differential D163 Diff 474 release/scripts/freestyle/styles/japanese_bigbrush.py

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release/scripts/freestyle/styles/japanese_bigbrush.py

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				# ##### BEGIN GPL LICENSE BLOCK #####
				#
				# This program is free software; you can redistribute it and/or
				# modify it under the terms of the GNU General Public License
				# as published by the Free Software Foundation; either version 2
				# of the License, or (at your option) any later version.
				#
				# This program is distributed in the hope that it will be useful,
				# but WITHOUT ANY WARRANTY; without even the implied warranty of
				# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
				# GNU General Public License for more details.
				#
				# You should have received a copy of the GNU General Public License
				# along with this program; if not, write to the Free Software Foundation,
				# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
				#
				# ##### END GPL LICENSE BLOCK #####

				# Filename : japanese_bigbrush.py
				# Author : Stephane Grabli
				# Date : 04/08/2005
				# Purpose : Simulates a big brush fr oriental painting

				from freestyle.chainingiterators import ChainSilhouetteIterator
				from freestyle.functions import pyInverseCurvature2DAngleF0D
				from freestyle.predicates import (
				NotUP1D,
				QuantitativeInvisibilityUP1D,
				pyDensityUP1D,
				pyHigherLengthUP1D,
				pyHigherNumberOfTurnsUP1D,
				pyLengthBP1D,
				pyParameterUP0D,
				)
				from freestyle.shaders import (
				BezierCurveShader,
				ConstantColorShader,
				ConstantThicknessShader,
				SamplingShader,
				TextureAssignerShader,
				TipRemoverShader,
				pyNonLinearVaryingThicknessShader,
				pySamplingShader,
				)
				from freestyle.types import IntegrationType, Operators


				Operators.select(QuantitativeInvisibilityUP1D(0))
				Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
				## Splits strokes at points of highest 2D curavture
				## when there are too many abrupt turns in it
				func = pyInverseCurvature2DAngleF0D()
				Operators.recursive_split(func, pyParameterUP0D(0.2, 0.8), NotUP1D(pyHigherNumberOfTurnsUP1D(3, 0.5)), 2)
				## Keeps only long enough strokes
				Operators.select(pyHigherLengthUP1D(100))
				## Sorts so as to draw the longest strokes first
				## (this will be done using the causal density)
				Operators.sort(pyLengthBP1D())
				shaders_list = [
				pySamplingShader(10),
				BezierCurveShader(30),
				SamplingShader(50),
				ConstantThicknessShader(10),
				pyNonLinearVaryingThicknessShader(4, 25, 0.6),
				TextureAssignerShader(6),
				ConstantColorShader(0.2, 0.2, 0.2,1.0),
				TipRemoverShader(10),
				]
				## Use the causal density to avoid cluttering
				Operators.create(pyDensityUP1D(8, 0.4, IntegrationType.MEAN), shaders_list)