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#  Filename : qi0.py
#  Author   : Stephane Grabli
#  Date     : 04/08/2005
#  Purpose  : Draws the visible lines (chaining follows same nature lines)
#             (most basic style module)

from freestyle import ChainSilhouetteIterator, ConstantColorShader, ConstantThicknessShader, \
    Operators, QuantitativeInvisibilityUP1D, SamplingShader, TrueUP1D
from logical_operators import NotUP1D

Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
shaders_list = [
    SamplingShader(5.0),
    ConstantThicknessShader(4.0),
    ConstantColorShader(0.0, 0.0, 0.0)
    ]
Operators.create(TrueUP1D(), shaders_list)
