1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
#
# Filename : long_anisotropically_dense.py
# Author : Stephane Grabli
# Date : 04/08/2005
# Purpose : Selects the lines that are long and have a high anisotropic
# a priori density and uses causal density
# to draw without cluttering. Ideally, half of the
# selected lines are culled using the causal density.
#
# ********************* WARNING *************************************
# ******** The Directional a priori density maps must ******
# ******** have been computed prior to using this style module ******
#
#############################################################################
#
# Copyright (C) : Please refer to the COPYRIGHT file distributed
# with this source distribution.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#############################################################################
from freestyle_init import *
from logical_operators import *
from PredicatesU1D import *
from PredicatesU0D import *
from PredicatesB1D import *
from Functions0D import *
from Functions1D import *
from shaders import *
## custom density predicate
class pyDensityUP1D(UnaryPredicate1D):
def __init__(self,wsize,threshold, integration = IntegrationType.MEAN, sampling=2.0):
UnaryPredicate1D.__init__(self)
self._wsize = wsize
self._threshold = threshold
self._integration = integration
self._func = DensityF1D(self._wsize, self._integration, sampling)
self._func2 = DensityF1D(self._wsize, IntegrationType.MAX, sampling)
def getName(self):
return "pyDensityUP1D"
def __call__(self, inter):
c = self._func(inter)
m = self._func2(inter)
if(c < self._threshold):
return 1
if( m > 4* c ):
if ( c < 1.5*self._threshold ):
return 1
return 0
Operators.select(QuantitativeInvisibilityUP1D(0))
Operators.bidirectionalChain(ChainSilhouetteIterator(),NotUP1D(QuantitativeInvisibilityUP1D(0)))
Operators.select(pyHigherLengthUP1D(40))
## selects lines having a high anisotropic a priori density
Operators.select(pyHighDensityAnisotropyUP1D(0.3,4))
Operators.sort(pyLengthBP1D())
shaders_list = [
SamplingShader(2.0),
ConstantThicknessShader(2),
ConstantColorShader(0.2,0.2,0.25,1),
]
## uniform culling
Operators.create(pyDensityUP1D(3.0,2.0e-2, IntegrationType.MEAN, 0.1), shaders_list)
|
