def shade(self, stroke):
if stroke.stroke_vertices_size() <= 3:
return
predTVertex = pyVertexNatureUP0D(Nature.T_VERTEX)
it = stroke.stroke_vertices_begin()
itlast = stroke.stroke_vertices_end()
itlast.decrement()
if predTVertex(it):
stroke.remove_vertex(it.object)
if predTVertex(itlast):
stroke.remove_vertex(itlast.object)
stroke.update_length()
def shade(self, stroke):
if stroke.stroke_vertices_size() <= 3:
return
predTVertex = pyVertexNatureUP0D(Nature.T_VERTEX)
it = stroke.stroke_vertices_begin()
itlast = stroke.stroke_vertices_end()
itlast.decrement()
if predTVertex(it):
stroke.remove_vertex(it.object)
if predTVertex(itlast):
stroke.remove_vertex(itlast.object)
stroke.update_length()
def shade(self, stroke):
it = stroke.stroke_vertices_begin()
predTVertex = pyVertexNatureUP0D(Nature.T_VERTEX)
while not it.is_end:
if predTVertex(it) == 1:
it2 = StrokeVertexIterator(it)
it2.increment()
if not (it.is_begin or it2.is_end):
it.increment()
continue
n = self._n
a = self._a
if it.is_begin:
it3 = StrokeVertexIterator(it)
count = 0
while (not it3.is_end) and count < n:
att = it3.object.attribute
(tr, tl) = att.thickness
r = (a - 1.0) / float(n - 1) * (
float(n) / float(count + 1) - 1) + 1
#r = (1.0-a)/float(n-1)*count + a
att.thickness = (r * tr, r * tl)
it3.increment()
count = count + 1
if it2.is_end:
it4 = StrokeVertexIterator(it)
count = 0
while (not it4.is_begin) and count < n:
att = it4.object.attribute
(tr, tl) = att.thickness
r = (a - 1.0) / float(n - 1) * (
float(n) / float(count + 1) - 1) + 1
#r = (1.0-a)/float(n-1)*count + a
att.thickness = (r * tr, r * tl)
it4.decrement()
count = count + 1
if it4.is_begin:
att = it4.object.attribute
(tr, tl) = att.thickness
r = (a - 1.0) / float(n - 1) * (
float(n) / float(count + 1) - 1) + 1
#r = (1.0-a)/float(n-1)*count + a
att.thickness = (r * tr, r * tl)
it.increment()
def shade(self, stroke):
it = stroke.stroke_vertices_begin()
predTVertex = pyVertexNatureUP0D(Nature.T_VERTEX)
while not it.is_end:
if predTVertex(it) == 1:
it2 = StrokeVertexIterator(it)
it2.increment()
if not (it.is_begin or it2.is_end):
it.increment()
continue
n = self._n
a = self._a
if it.is_begin:
it3 = StrokeVertexIterator(it)
count = 0
while (not it3.is_end) and count < n:
att = it3.object.attribute
(tr, tl) = att.thickness
r = (a-1.0)/float(n-1)*(float(n)/float(count+1) - 1) + 1
#r = (1.0-a)/float(n-1)*count + a
att.thickness = (r*tr, r*tl)
it3.increment()
count = count + 1
if it2.is_end:
it4 = StrokeVertexIterator(it)
count = 0
while (not it4.is_begin) and count < n:
att = it4.object.attribute
(tr, tl) = att.thickness
r = (a-1.0)/float(n-1)*(float(n)/float(count+1) - 1) + 1
#r = (1.0-a)/float(n-1)*count + a
att.thickness = (r*tr, r*tl)
it4.decrement()
count = count + 1
if it4.is_begin:
att = it4.object.attribute
(tr, tl) = att.thickness
r = (a-1.0)/float(n-1)*(float(n)/float(count+1) - 1) + 1
#r = (1.0-a)/float(n-1)*count + a
att.thickness = (r*tr, r*tl)
it.increment()
# the stopping extremities for strokes
from freestyle.chainingiterators import ChainSilhouetteIterator
from freestyle.predicates import (
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueUP1D,
pyBackTVertexUP0D,
pyVertexNatureUP0D,
)
from freestyle.shaders import (
ConstantColorShader,
IncreasingThicknessShader,
SpatialNoiseShader,
)
from freestyle.types import Nature, Operators
upred = QuantitativeInvisibilityUP1D(0)
Operators.select(upred)
Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(upred))
# starting and stopping predicates:
start = pyVertexNatureUP0D(Nature.NON_T_VERTEX)
stop = pyBackTVertexUP0D()
Operators.sequential_split(start, stop, 10)
shaders_list = [
SpatialNoiseShader(7, 120, 2, True, True),
IncreasingThicknessShader(5, 8),
ConstantColorShader(0.2, 0.2, 0.2, 1),
]
Operators.create(TrueUP1D(), shaders_list)
# Filename : split_at_tvertices.py
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Draws strokes that starts and stops at Tvertices (visible or not)
from freestyle.chainingiterators import ChainSilhouetteIterator
from freestyle.predicates import (
NotUP1D,
QuantitativeInvisibilityUP1D,
TrueUP1D,
pyVertexNatureUP0D,
)
from freestyle.shaders import (
ConstantThicknessShader,
IncreasingColorShader,
)
from freestyle.types import Nature, Operators
Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectional_chain(ChainSilhouetteIterator(), NotUP1D(QuantitativeInvisibilityUP1D(0)))
start = pyVertexNatureUP0D(Nature.T_VERTEX)
## use the same predicate to decide where to start and where to stop
## the strokes:
Operators.sequential_split(start, start, 10)
shaders_list = [
ConstantThicknessShader(5),
IncreasingColorShader(1, 0, 0, 1, 0, 1, 0, 1),
]
Operators.create(TrueUP1D(), shaders_list)
