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

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release/scripts/freestyle/styles/apriori_and_causal_density.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 : apriori_and_causal_density.py
				# Author : Stephane Grabli
				# Date : 04/08/2005
				# Purpose : Selects the lines with high a priori density and
				# subjects them to the causal density so as to avoid
				# cluttering

				from freestyle.chainingiterators import ChainPredicateIterator
				from freestyle.predicates import (
				AndUP1D,
				NotUP1D,
				QuantitativeInvisibilityUP1D,
				TrueBP1D,
				pyDensityUP1D,
				pyHighViewMapDensityUP1D,
				)
				from freestyle.shaders import (
				ConstantColorShader,
				ConstantThicknessShader,
				)
				from freestyle.types import IntegrationType, Operators

				upred = AndUP1D(QuantitativeInvisibilityUP1D(0), pyHighViewMapDensityUP1D(0.3, IntegrationType.LAST))
				Operators.select(upred)
				bpred = TrueBP1D()
				Operators.bidirectional_chain(ChainPredicateIterator(upred, bpred), NotUP1D(QuantitativeInvisibilityUP1D(0)))
				shaders_list = [
				ConstantThicknessShader(2),
				ConstantColorShader(0, 0, 0, 1),
				]
				Operators.create(pyDensityUP1D(1, 0.1, IntegrationType.MEAN), shaders_list)