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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtksurfaceremeshing.py,v $
## Language: Python
## Date: $Date: 2006/02/23 09:27:52 $
## Version: $Revision: 1.7 $
## Copyright (c) Luca Antiga, David Steinman. All rights reserved.
## See LICENCE file for details.
## This software is distributed WITHOUT ANY WARRANTY; without even
## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
## PURPOSE. See the above copyright notices for more information.
import vtk
import vtkvmtk
import sys
import pypes
vmtksurfaceremeshing = 'vmtkSurfaceRemeshing'
class vmtkSurfaceRemeshing(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Surface = None
self.TargetArea = 1.0
self.TargetEdgeLength = 1.0
self.TargetAreaFactor = 1.0
self.TargetEdgeLengthFactor = 1.0
self.MaxArea = 1E16
self.MinArea = 0.0
self.MaxEdgeLength = 1E16
self.MinEdgeLength = 0.0
self.NumberOfIterations = 10
self.NumberOfConnectivityOptimizationIterations = 20
self.CellEntityIdsArrayName = None
self.TargetAreaArrayName = 'TargetArea'
self.TargetEdgeLengthArrayName = ''
self.ElementSizeMode = 'area'
self.MinAreaFactor = 0.5
self.AspectRatioThreshold = 1.2
self.InternalAngleTolerance = 0.0
self.NormalAngleTolerance = 0.2
self.CollapseAngleThreshold = 0.2
self.Relaxation = 0.5
self.PreserveBoundaryEdges = 0
self.ExcludeEntityIds = []
self.SetScriptName('vmtksurfaceremeshing')
self.SetScriptDoc('remesh a surface using quality triangles')
self.SetInputMembers([
['Surface','i','vtkPolyData',1,'','the input surface','vmtksurfacereader'],
['ElementSizeMode','elementsizemode','str',1,'["area","edgelength","areaarray","edgelengtharray"]'],
['TargetArea','area','float',1,'(0.0,)'],
['TargetAreaArrayName','areaarray','str',1],
['TargetEdgeLength','edgelength','float',1,'(0.0,)'],
['TargetEdgeLengthArrayName','edgelengtharray','str',1],
['TargetAreaFactor','areafactor','float',1,'(0.0,)'],
['TargetEdgeLengthFactor','edgelengthfactor','float',1,'(0.0,)'],
['MaxArea','maxarea','float',1,'(0.0,)'],
['MinArea','minarea','float',1,'(0.0,)'],
['NumberOfIterations','iterations','int',1,'(0,)'],
['NumberOfConnectivityOptimizationIterations','connectivityiterations','int',1,'(0,)'],
['CellEntityIdsArrayName','entityidsarray','str',1],
['AspectRatioThreshold','aspectratio','float',1,'(0.0,)'],
['MinAreaFactor','minareafactor','float',1,'(0.0,)'],
['InternalAngleTolerance','internalangletolerance','float',1,'(0.0,)'],
['NormalAngleTolerance','normalangletolerance','float',1,'(0.0,)'],
['CollapseAngleThreshold','collapseangle','float',1,'(0.0,)'],
['Relaxation','relaxation','float',1,'(0.5,)'],
['ExcludeEntityIds','exclude','int',-1,''],
['PreserveBoundaryEdges','preserveboundary','bool',1]
])
self.SetOutputMembers([
['Surface','o','vtkPolyData',1,'','the output surface','vmtksurfacewriter']
])
def Execute(self):
if self.Surface == None:
self.PrintError('Error: No input surface.')
cleaner = vtk.vtkCleanPolyData()
cleaner.SetInput(self.Surface)
cleaner.Update()
triangleFilter = vtk.vtkTriangleFilter()
triangleFilter.SetInput(cleaner.GetOutput())
triangleFilter.Update()
self.Surface = triangleFilter.GetOutput()
if self.ElementSizeMode == 'edgelength':
self.TargetArea = 0.25 * 3.0**0.5 * self.TargetEdgeLength**2
elif self.ElementSizeMode == 'edgelengtharray':
calculator = vtk.vtkArrayCalculator()
calculator.SetInput(self.Surface)
calculator.AddScalarArrayName(self.TargetEdgeLengthArrayName,0)
calculator.SetFunction("%f^2 * 0.25 * sqrt(3) * %s^2" % (self.TargetEdgeLengthFactor,self.TargetEdgeLengthArrayName))
calculator.SetResultArrayName(self.TargetAreaArrayName)
calculator.Update()
self.MaxArea = 0.25 * 3.0**0.5 * self.MaxEdgeLength**2
self.MinArea = 0.25 * 3.0**0.5 * self.MinEdgeLength**2
self.Surface = calculator.GetOutput()
excludedIds = vtk.vtkIdList()
if self.ExcludeEntityIds:
for excludedId in self.ExcludeEntityIds:
excludedIds.InsertNextId(excludedId)
surfaceRemeshing = vtkvmtk.vtkvmtkPolyDataSurfaceRemeshing()
surfaceRemeshing.SetInput(self.Surface)
if self.CellEntityIdsArrayName:
surfaceRemeshing.SetCellEntityIdsArrayName(self.CellEntityIdsArrayName)
if self.ElementSizeMode in ['area','edgelength']:
surfaceRemeshing.SetElementSizeModeToTargetArea()
elif self.ElementSizeMode in ['areaarray','edgelengtharray']:
surfaceRemeshing.SetElementSizeModeToTargetAreaArray()
surfaceRemeshing.SetTargetAreaArrayName(self.TargetAreaArrayName)
else:
self.PrintError('Error: unsupported ElementSizeMode.')
surfaceRemeshing.SetTargetArea(self.TargetArea)
surfaceRemeshing.SetTargetAreaFactor(self.TargetAreaFactor)
surfaceRemeshing.SetMaxArea(self.MaxArea)
surfaceRemeshing.SetMinArea(self.MinArea)
surfaceRemeshing.SetNumberOfIterations(self.NumberOfIterations)
surfaceRemeshing.SetNumberOfConnectivityOptimizationIterations(self.NumberOfConnectivityOptimizationIterations)
surfaceRemeshing.SetRelaxation(self.Relaxation)
surfaceRemeshing.SetMinAreaFactor(self.MinAreaFactor)
surfaceRemeshing.SetAspectRatioThreshold(self.AspectRatioThreshold)
surfaceRemeshing.SetInternalAngleTolerance(self.InternalAngleTolerance)
surfaceRemeshing.SetNormalAngleTolerance(self.NormalAngleTolerance)
surfaceRemeshing.SetCollapseAngleThreshold(self.CollapseAngleThreshold)
surfaceRemeshing.SetPreserveBoundaryEdges(self.PreserveBoundaryEdges)
surfaceRemeshing.SetExcludedEntityIds(excludedIds)
surfaceRemeshing.Update()
self.Surface = surfaceRemeshing.GetOutput()
if self.Surface.GetSource():
self.Surface.GetSource().UnRegisterAllOutputs()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
|
