#
#  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 : qi0_not_external_contour.py
#  Author   : Stephane Grabli
#  Date     : 04/08/2005
#  Purpose  : Draws the visible lines (chaining follows same nature lines)
#             that do not belong to the external contour of the scene

from freestyle import BackboneStretcherShader, ChainSilhouetteIterator, ExternalContourUP1D, \
    IncreasingColorShader, IncreasingThicknessShader, Operators, QuantitativeInvisibilityUP1D, \
    SamplingShader, SpatialNoiseShader, TextureAssignerShader, TrueUP1D
from logical_operators import AndUP1D, NotUP1D

upred = AndUP1D(QuantitativeInvisibilityUP1D(0), ExternalContourUP1D())
Operators.select(upred)
Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(upred))
shaders_list = [
    SamplingShader(4),
    SpatialNoiseShader(4, 150, 2, True, True),
    IncreasingThicknessShader(2, 5),
    BackboneStretcherShader(20),
    IncreasingColorShader(1, 0, 0, 1, 0, 1, 0, 1),
    TextureAssignerShader(4),
]
Operators.create(TrueUP1D(), shaders_list)
#  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 : sketchy_multiple_parameterization.py
#  Author   : Stephane Grabli
#  Date     : 04/08/2005
#  Purpose  : Builds sketchy strokes whose topology relies on a 
#             parameterization that covers the complete lines (visible+invisible)
#             whereas only the visible portions are actually drawn

from ChainingIterators import pySketchyChainSilhouetteIterator
from freestyle import IncreasingColorShader, IncreasingThicknessShader, Operators, \
    QuantitativeInvisibilityUP1D, SamplingShader, SmoothingShader, SpatialNoiseShader, \
    TextureAssignerShader, TrueUP1D
from shaders import pyHLRShader

Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectional_chain(pySketchyChainSilhouetteIterator(3, False))
shaders_list = [
    SamplingShader(2),
    SpatialNoiseShader(15, 120, 2, True, True),
    IncreasingThicknessShader(5, 30),
    SmoothingShader(100, 0.05, 0, 0.2, 0, 0, 0, 1),
    IncreasingColorShader(0, 0.2, 0, 1, 0.2, 0.7, 0.2, 1),
    TextureAssignerShader(6),
    pyHLRShader(),
    ]
Operators.create(TrueUP1D(), shaders_list)