blender/release/scripts/freestyle/styles/occluded_by_specific_object.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 : occluded_by_specific_object.py
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Draws only the lines that are occluded by a given object
from freestyle.chainingiterators import ChainSilhouetteIterator
from freestyle.predicates import (
AndUP1D,
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueUP1D,
pyIsInOccludersListUP1D,
)
from freestyle.shaders import (
ConstantColorShader,
ConstantThicknessShader,
SamplingShader,
)
from freestyle.types import Id, Operators
## the id of the occluder (use SHIFT+click on the ViewMap to
## retrieve ids)
id = Id(3,0)
upred = AndUP1D(NotUP1D(QuantitativeInvisibilityUP1D(0)), pyIsInOccludersListUP1D(id))
Operators.select(upred)
Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(upred))
shaders_list = [
SamplingShader(5),
ConstantThicknessShader(3),
ConstantColorShader(0.3, 0.3, 0.3, 1),
]
Operators.create(TrueUP1D(), shaders_list)