c434782e3a
Use a shorter/simpler license convention, stops the header taking so much space. Follow the SPDX license specification: https://spdx.org/licenses - C/C++/objc/objc++ - Python - Shell Scripts - CMake, GNUmakefile While most of the source tree has been included - `./extern/` was left out. - `./intern/cycles` & `./intern/atomic` are also excluded because they use different header conventions. doc/license/SPDX-license-identifiers.txt has been added to list SPDX all used identifiers. See P2788 for the script that automated these edits. Reviewed By: brecht, mont29, sergey Ref D14069
67 lines
2.3 KiB
Python
67 lines
2.3 KiB
Python
# SPDX-License-Identifier: GPL-2.0-or-later
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# Filename : long_anisotropically_dense.py
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# Author : Stephane Grabli
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# Date : 04/08/2005
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# Purpose : Selects the lines that are long and have a high anisotropic
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# a priori density and uses causal density
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# to draw without cluttering. Ideally, half of the
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# selected lines are culled using the causal density.
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#
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# ********************* WARNING *************************************
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# ******** The Directional a priori density maps must ******
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# ******** have been computed prior to using this style module ******
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from freestyle.chainingiterators import ChainSilhouetteIterator
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from freestyle.functions import DensityF1D
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from freestyle.predicates import (
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NotUP1D,
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QuantitativeInvisibilityUP1D,
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UnaryPredicate1D,
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pyHighDensityAnisotropyUP1D,
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pyHigherLengthUP1D,
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pyLengthBP1D,
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)
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from freestyle.shaders import (
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ConstantColorShader,
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ConstantThicknessShader,
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SamplingShader,
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)
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from freestyle.types import IntegrationType, Operators
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# custom density predicate
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class pyDensityUP1D(UnaryPredicate1D):
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def __init__(self, wsize, threshold, integration=IntegrationType.MEAN, sampling=2.0):
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UnaryPredicate1D.__init__(self)
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self._wsize = wsize
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self._threshold = threshold
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self._integration = integration
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self._func = DensityF1D(self._wsize, self._integration, sampling)
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self._func2 = DensityF1D(self._wsize, IntegrationType.MAX, sampling)
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def __call__(self, inter):
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c = self._func(inter)
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m = self._func2(inter)
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if c < self._threshold:
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return 1
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if m > 4 * c:
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if c < 1.5 * self._threshold:
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return 1
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return 0
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Operators.select(QuantitativeInvisibilityUP1D(0))
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Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
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Operators.select(pyHigherLengthUP1D(40))
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# selects lines having a high anisotropic a priori density
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Operators.select(pyHighDensityAnisotropyUP1D(0.3, 4))
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Operators.sort(pyLengthBP1D())
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shaders_list = [
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SamplingShader(2.0),
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ConstantThicknessShader(2),
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ConstantColorShader(0.2, 0.2, 0.25, 1),
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]
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# uniform culling
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Operators.create(pyDensityUP1D(3.0, 2.0e-2, IntegrationType.MEAN, 0.1), shaders_list)
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