pyNonLinearVaryingThicknessShader,
pySamplingShader,
)
from freestyle.types import IntegrationType, Operators
Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectional_chain(ChainSilhouetteIterator(),
NotUP1D(QuantitativeInvisibilityUP1D(0)))
## Splits strokes at points of highest 2D curavture
## when there are too many abrupt turns in it
func = pyInverseCurvature2DAngleF0D()
Operators.recursive_split(func, pyParameterUP0D(0.2, 0.8),
NotUP1D(pyHigherNumberOfTurnsUP1D(3, 0.5)), 2)
## Keeps only long enough strokes
Operators.select(pyHigherLengthUP1D(100))
## Sorts so as to draw the longest strokes first
## (this will be done using the causal density)
Operators.sort(pyLengthBP1D())
shaders_list = [
pySamplingShader(10),
BezierCurveShader(30),
SamplingShader(50),
ConstantThicknessShader(10),
pyNonLinearVaryingThicknessShader(4, 25, 0.6),
TextureAssignerShader(6),
ConstantColorShader(0.2, 0.2, 0.2, 1.0),
TipRemoverShader(10),
]
## Use the causal density to avoid cluttering
Operators.create(pyDensityUP1D(8, 0.4, IntegrationType.MEAN), shaders_list)
# Filename : cartoon.py
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Draws colored lines. The color is automatically
# infered from each object's material in a cartoon-like
# fashion.
from freestyle.chainingiterators import ChainSilhouetteIterator
from freestyle.predicates import (
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueUP1D,
)
from freestyle.shaders import (
BezierCurveShader,
ConstantThicknessShader,
pyMaterialColorShader,
)
from freestyle.types import Operators
Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
shaders_list = [
BezierCurveShader(3),
ConstantThicknessShader(4),
pyMaterialColorShader(0.8),
]
Operators.create(TrueUP1D(), shaders_list)
def process(layer_name, lineset_name):
scene = getCurrentScene()
layer = scene.render.layers[layer_name]
lineset = layer.freestyle_settings.linesets[lineset_name]
linestyle = lineset.linestyle
selection_criteria = []
# prepare selection criteria by visibility
if lineset.select_by_visibility:
if lineset.visibility == 'VISIBLE':
selection_criteria.append(QuantitativeInvisibilityUP1D(0))
elif lineset.visibility == 'HIDDEN':
selection_criteria.append(NotUP1D(QuantitativeInvisibilityUP1D(0)))
elif lineset.visibility == 'RANGE':
selection_criteria.append(
QuantitativeInvisibilityRangeUP1D(lineset.qi_start,
lineset.qi_end))
# prepare selection criteria by edge types
if lineset.select_by_edge_types:
edge_type_criteria = []
if lineset.select_silhouette:
upred = pyNatureUP1D(Nature.SILHOUETTE)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_silhouette else upred)
if lineset.select_border:
upred = pyNatureUP1D(Nature.BORDER)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_border else upred)
if lineset.select_crease:
upred = pyNatureUP1D(Nature.CREASE)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_crease else upred)
if lineset.select_ridge_valley:
upred = pyNatureUP1D(Nature.RIDGE)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_ridge_valley else upred)
if lineset.select_suggestive_contour:
upred = pyNatureUP1D(Nature.SUGGESTIVE_CONTOUR)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_suggestive_contour else upred
)
if lineset.select_material_boundary:
upred = pyNatureUP1D(Nature.MATERIAL_BOUNDARY)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_material_boundary else upred)
if lineset.select_edge_mark:
upred = pyNatureUP1D(Nature.EDGE_MARK)
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_edge_mark else upred)
if lineset.select_contour:
upred = ContourUP1D()
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_contour else upred)
if lineset.select_external_contour:
upred = ExternalContourUP1D()
edge_type_criteria.append(
NotUP1D(upred) if lineset.exclude_external_contour else upred)
if lineset.edge_type_combination == 'OR':
upred = OrUP1D(*edge_type_criteria)
else:
upred = AndUP1D(*edge_type_criteria)
if upred is not None:
if lineset.edge_type_negation == 'EXCLUSIVE':
upred = NotUP1D(upred)
selection_criteria.append(upred)
# prepare selection criteria by face marks
if lineset.select_by_face_marks:
if lineset.face_mark_condition == 'BOTH':
upred = FaceMarkBothUP1D()
else:
upred = FaceMarkOneUP1D()
if lineset.face_mark_negation == 'EXCLUSIVE':
upred = NotUP1D(upred)
selection_criteria.append(upred)
# prepare selection criteria by group of objects
if lineset.select_by_group:
if lineset.group is not None:
names = {ob.name: True for ob in lineset.group.objects}
upred = ObjectNamesUP1D(names,
lineset.group_negation == 'EXCLUSIVE')
selection_criteria.append(upred)
# prepare selection criteria by image border
if lineset.select_by_image_border:
upred = WithinImageBoundaryUP1D(*ContextFunctions.get_border())
selection_criteria.append(upred)
# select feature edges
upred = AndUP1D(*selection_criteria)
if upred is None:
upred = TrueUP1D()
Operators.select(upred)
# join feature edges to form chains
if linestyle.use_chaining:
if linestyle.chaining == 'PLAIN':
if linestyle.use_same_object:
Operators.bidirectional_chain(ChainSilhouetteIterator(),
NotUP1D(upred))
else:
Operators.bidirectional_chain(
ChainPredicateIterator(upred, TrueBP1D()), NotUP1D(upred))
elif linestyle.chaining == 'SKETCHY':
if linestyle.use_same_object:
Operators.bidirectional_chain(
pySketchyChainSilhouetteIterator(linestyle.rounds))
else:
Operators.bidirectional_chain(
pySketchyChainingIterator(linestyle.rounds))
else:
Operators.chain(ChainPredicateIterator(FalseUP1D(), FalseBP1D()),
NotUP1D(upred))
# split chains
if linestyle.material_boundary:
Operators.sequential_split(MaterialBoundaryUP0D())
if linestyle.use_angle_min or linestyle.use_angle_max:
angle_min = linestyle.angle_min if linestyle.use_angle_min else None
angle_max = linestyle.angle_max if linestyle.use_angle_max else None
Operators.sequential_split(
Curvature2DAngleThresholdUP0D(angle_min, angle_max))
if linestyle.use_split_length:
Operators.sequential_split(
Length2DThresholdUP0D(linestyle.split_length), 1.0)
if linestyle.use_split_pattern:
pattern = []
if linestyle.split_dash1 > 0 and linestyle.split_gap1 > 0:
pattern.append(linestyle.split_dash1)
pattern.append(linestyle.split_gap1)
if linestyle.split_dash2 > 0 and linestyle.split_gap2 > 0:
pattern.append(linestyle.split_dash2)
pattern.append(linestyle.split_gap2)
if linestyle.split_dash3 > 0 and linestyle.split_gap3 > 0:
pattern.append(linestyle.split_dash3)
pattern.append(linestyle.split_gap3)
if len(pattern) > 0:
sampling = 1.0
controller = SplitPatternController(pattern, sampling)
Operators.sequential_split(SplitPatternStartingUP0D(controller),
SplitPatternStoppingUP0D(controller),
sampling)
# sort selected chains
if linestyle.use_sorting:
integration = integration_types.get(linestyle.integration_type,
IntegrationType.MEAN)
if linestyle.sort_key == 'DISTANCE_FROM_CAMERA':
bpred = pyZBP1D(integration)
elif linestyle.sort_key == '2D_LENGTH':
bpred = Length2DBP1D()
elif linestyle.sort_key == 'PROJECTED_X':
bpred = pyProjectedXBP1D(integration)
elif linestyle.sort_key == 'PROJECTED_Y':
bpred = pyProjectedYBP1D(integration)
if linestyle.sort_order == 'REVERSE':
bpred = NotBP1D(bpred)
Operators.sort(bpred)
# select chains
if linestyle.use_length_min or linestyle.use_length_max:
length_min = linestyle.length_min if linestyle.use_length_min else None
length_max = linestyle.length_max if linestyle.use_length_max else None
Operators.select(LengthThresholdUP1D(length_min, length_max))
if linestyle.use_chain_count:
Operators.select(pyNFirstUP1D(linestyle.chain_count))
# prepare a list of stroke shaders
shaders_list = []
for m in linestyle.geometry_modifiers:
if not m.use:
continue
if m.type == 'SAMPLING':
shaders_list.append(SamplingShader(m.sampling))
elif m.type == 'BEZIER_CURVE':
shaders_list.append(BezierCurveShader(m.error))
elif m.type == 'SINUS_DISPLACEMENT':
shaders_list.append(
SinusDisplacementShader(m.wavelength, m.amplitude, m.phase))
elif m.type == 'SPATIAL_NOISE':
shaders_list.append(
SpatialNoiseShader(m.amplitude, m.scale, m.octaves, m.smooth,
m.use_pure_random))
elif m.type == 'PERLIN_NOISE_1D':
shaders_list.append(
PerlinNoise1DShader(m.frequency, m.amplitude, m.octaves,
m.angle, _seed.get(m.seed)))
elif m.type == 'PERLIN_NOISE_2D':
shaders_list.append(
PerlinNoise2DShader(m.frequency, m.amplitude, m.octaves,
m.angle, _seed.get(m.seed)))
elif m.type == 'BACKBONE_STRETCHER':
shaders_list.append(BackboneStretcherShader(m.backbone_length))
elif m.type == 'TIP_REMOVER':
shaders_list.append(TipRemoverShader(m.tip_length))
elif m.type == 'POLYGONIZATION':
shaders_list.append(PolygonalizationShader(m.error))
elif m.type == 'GUIDING_LINES':
shaders_list.append(GuidingLinesShader(m.offset))
elif m.type == 'BLUEPRINT':
if m.shape == 'CIRCLES':
shaders_list.append(
pyBluePrintCirclesShader(m.rounds, m.random_radius,
m.random_center))
elif m.shape == 'ELLIPSES':
shaders_list.append(
pyBluePrintEllipsesShader(m.rounds, m.random_radius,
m.random_center))
elif m.shape == 'SQUARES':
shaders_list.append(
pyBluePrintSquaresShader(m.rounds, m.backbone_length,
m.random_backbone))
elif m.type == '2D_OFFSET':
shaders_list.append(Offset2DShader(m.start, m.end, m.x, m.y))
elif m.type == '2D_TRANSFORM':
shaders_list.append(
Transform2DShader(m.pivot, m.scale_x, m.scale_y, m.angle,
m.pivot_u, m.pivot_x, m.pivot_y))
# -- Base color, alpha and thickness -- #
if (not linestyle.use_chaining) or (linestyle.chaining == 'PLAIN'
and linestyle.use_same_object):
thickness_position = linestyle.thickness_position
else:
thickness_position = 'CENTER'
import bpy
if bpy.app.debug_freestyle:
print(
"Warning: Thickness position options are applied when chaining is disabled\n"
" or the Plain chaining is used with the Same Object option enabled."
)
shaders_list.append(
ConstantColorShader(*(linestyle.color), alpha=linestyle.alpha))
shaders_list.append(
BaseThicknessShader(linestyle.thickness, thickness_position,
linestyle.thickness_ratio))
# -- Modifiers -- #
for m in linestyle.color_modifiers:
if not m.use:
continue
if m.type == 'ALONG_STROKE':
shaders_list.append(
ColorAlongStrokeShader(m.blend, m.influence, m.color_ramp))
elif m.type == 'DISTANCE_FROM_CAMERA':
shaders_list.append(
ColorDistanceFromCameraShader(m.blend, m.influence,
m.color_ramp, m.range_min,
m.range_max))
elif m.type == 'DISTANCE_FROM_OBJECT' and m.target is not None:
shaders_list.append(
ColorDistanceFromObjectShader(m.blend, m.influence,
m.color_ramp, m.target,
m.range_min, m.range_max))
elif m.type == 'MATERIAL':
shaders_list.append(
ColorMaterialShader(m.blend, m.influence, m.color_ramp,
m.material_attribute, m.use_ramp))
for m in linestyle.alpha_modifiers:
if not m.use:
continue
if m.type == 'ALONG_STROKE':
shaders_list.append(
AlphaAlongStrokeShader(m.blend, m.influence, m.mapping,
m.invert, m.curve))
elif m.type == 'DISTANCE_FROM_CAMERA':
shaders_list.append(
AlphaDistanceFromCameraShader(m.blend, m.influence, m.mapping,
m.invert, m.curve, m.range_min,
m.range_max))
elif m.type == 'DISTANCE_FROM_OBJECT' and m.target is not None:
shaders_list.append(
AlphaDistanceFromObjectShader(m.blend, m.influence, m.mapping,
m.invert, m.curve, m.target,
m.range_min, m.range_max))
elif m.type == 'MATERIAL':
shaders_list.append(
AlphaMaterialShader(m.blend, m.influence, m.mapping, m.invert,
m.curve, m.material_attribute))
for m in linestyle.thickness_modifiers:
if not m.use:
continue
if m.type == 'ALONG_STROKE':
shaders_list.append(
ThicknessAlongStrokeShader(thickness_position,
linestyle.thickness_ratio, m.blend,
m.influence, m.mapping, m.invert,
m.curve, m.value_min, m.value_max))
elif m.type == 'DISTANCE_FROM_CAMERA':
shaders_list.append(
ThicknessDistanceFromCameraShader(thickness_position,
linestyle.thickness_ratio,
m.blend, m.influence,
m.mapping, m.invert, m.curve,
m.range_min, m.range_max,
m.value_min, m.value_max))
elif m.type == 'DISTANCE_FROM_OBJECT' and m.target is not None:
shaders_list.append(
ThicknessDistanceFromObjectShader(
thickness_position, linestyle.thickness_ratio, m.blend,
m.influence, m.mapping, m.invert, m.curve, m.target,
m.range_min, m.range_max, m.value_min, m.value_max))
elif m.type == 'MATERIAL':
shaders_list.append(
ThicknessMaterialShader(thickness_position,
linestyle.thickness_ratio, m.blend,
m.influence, m.mapping, m.invert,
m.curve, m.material_attribute,
m.value_min, m.value_max))
elif m.type == 'CALLIGRAPHY':
shaders_list.append(
CalligraphicThicknessShader(thickness_position,
linestyle.thickness_ratio, m.blend,
m.influence, m.orientation,
m.thickness_min, m.thickness_max))
# -- Textures -- #
has_tex = False
if scene.render.use_shading_nodes:
if linestyle.use_nodes and linestyle.node_tree:
shaders_list.append(BlenderTextureShader(linestyle.node_tree))
has_tex = True
else:
if linestyle.use_texture:
textures = tuple(
BlenderTextureShader(slot) for slot in linestyle.texture_slots
if slot is not None)
if textures:
shaders_list.extend(textures)
has_tex = True
if has_tex:
shaders_list.append(StrokeTextureStepShader(linestyle.texture_spacing))
# -- Stroke caps -- #
if linestyle.caps == 'ROUND':
shaders_list.append(RoundCapShader())
elif linestyle.caps == 'SQUARE':
shaders_list.append(SquareCapShader())
# -- Dashed line -- #
if linestyle.use_dashed_line:
pattern = []
if linestyle.dash1 > 0 and linestyle.gap1 > 0:
pattern.append(linestyle.dash1)
pattern.append(linestyle.gap1)
if linestyle.dash2 > 0 and linestyle.gap2 > 0:
pattern.append(linestyle.dash2)
pattern.append(linestyle.gap2)
if linestyle.dash3 > 0 and linestyle.gap3 > 0:
pattern.append(linestyle.dash3)
pattern.append(linestyle.gap3)
if len(pattern) > 0:
shaders_list.append(DashedLineShader(pattern))
# create strokes using the shaders list
Operators.create(TrueUP1D(), shaders_list)
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Draws textured strokes (illustrate the StrokeTextureShader shader)
from freestyle.chainingiterators import ChainSilhouetteIterator
from freestyle.predicates import (
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueUP1D,
)
from freestyle.shaders import (
BezierCurveShader,
ConstantColorShader,
ConstantThicknessShader,
SamplingShader,
StrokeTextureShader,
)
from freestyle.types import Operators, Stroke
Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectional_chain(ChainSilhouetteIterator(),
NotUP1D(QuantitativeInvisibilityUP1D(0)))
shaders_list = [
SamplingShader(3),
BezierCurveShader(4),
StrokeTextureShader("washbrushAlpha.bmp", Stroke.DRY_MEDIUM, True),
ConstantThicknessShader(40),
ConstantColorShader(0, 0, 0, 1),
]
Operators.create(TrueUP1D(), shaders_list)