MantisBT - VTK
I have disected the mesh and found that the problem involves only a small area (listed below). There are no duplicate points, or wrong-way normals, or anything obviously degenerate about this mesh. Just this small sub-mesh is enough to cause vtkStripper to segfault. The original mesh is a closed surface, which topologicaly seems equivalent to a cylinder. This fragment is one end of that cylinder.
Adding vtkTriangleFilter before vtkStripper does not solve the issue.
I am using VTK 4.4.2-5 bound to python 2.3 on a linux (debian derived) system. The vtk libs were installed from the python-vtk package version 4.4.2-5.
Thank You Very Much!
-brice
############################
from vtk import vtkPolyDataReader, vtkStripper, vtkPolyDataWriter
reader = vtkPolyDataReader()
reader.SetFileName("stripify-vtkinput.vtk")
stripper = vtkStripper()
stripper.SetInput(triangles.GetOutput())
stripper.Update()
stripper = vtkStripper()
stripper.SetInput(triangles.GetOutput())
stripper.Update()
newmesh = None
newmesh = stripper.GetOutput()
writer = vtkPolyDataWriter()
writer.SetInput(newmesh)
writer.SetFileName("stripify-vtkoutput.vtk")
writer.Write()
############################
# vtk DataFile Version 3.0
vtk PolyData input
ASCII
DATASET POLYDATA
POINTS 41 float
0.010 -0.014 -21.389
-3.754 2.721 -20.773
-1.428 4.411 -20.773
3.774 2.721 -20.773
4.663 -0.014 -20.773
3.774 -2.749 -25.096
3.774 -2.749 -20.773
4.663 -0.014 -25.096
1.448 -4.439 -25.096
1.448 -4.439 -20.773
-1.428 -4.439 -25.096
-1.428 -4.439 -20.773
-3.754 -2.749 -25.096
-3.754 -2.749 -20.773
-4.643 -0.014 -25.096
-4.643 -0.014 -20.773
-3.754 2.721 -25.096
-1.428 4.411 -25.096
1.448 4.411 -25.096
1.448 4.411 -20.773
3.774 2.721 -25.096
6.965 5.040 -23.944
8.607 -0.014 -23.944
11.243 -0.014 -22.524
9.098 6.589 -22.524
2.667 8.163 -23.944
3.481 10.670 -22.524
-2.647 8.163 -23.944
-3.461 10.670 -22.524
-6.946 5.040 -23.944
-9.078 6.589 -22.524
-8.588 -0.014 -23.944
-11.223 -0.014 -22.524
-6.946 -5.067 -23.944
-9.078 -6.616 -22.524
-2.647 -8.190 -23.944
-3.461 -10.697 -22.524
2.667 -8.190 -23.944
3.481 -10.697 -22.524
6.965 -5.067 -23.944
9.098 -6.616 -22.524
POLYGONS 70 280
3 0 1 2
3 0 3 4
3 5 6 7
3 5 7 8
3 9 10 6
3 9 6 5
3 11 12 10
3 11 10 9
3 13 14 12
3 13 12 11
3 15 16 14
3 15 14 13
3 17 18 15
3 18 16 15
3 19 20 18
3 19 18 17
3 21 22 20
3 21 20 19
3 23 24 22
3 23 22 21
3 8 7 24
3 8 24 23
3 2 25 0
3 25 3 0
3 26 27 0
3 27 1 0
3 28 29 0
3 29 26 0
3 4 30 0
3 30 28 0
3 23 31 32
3 23 32 8
3 31 33 32
3 34 33 31
3 31 35 34
3 35 36 34
3 23 21 31
3 21 35 31
3 21 19 37
3 21 37 35
3 35 37 38
3 35 38 36
3 37 39 40
3 37 40 38
3 17 39 19
3 39 37 19
3 15 41 17
3 41 39 17
3 39 41 40
3 41 42 40
3 41 43 42
3 43 44 42
3 15 13 43
3 15 43 41
3 13 11 45
3 13 45 43
3 43 45 44
3 45 46 44
3 45 47 46
3 47 48 46
3 11 9 47
3 11 47 45
3 9 5 47
3 5 49 47
3 47 49 48
3 49 50 48
3 32 33 50
3 32 50 49
3 8 32 5
3 32 49 5
################################
zfrag458.vtk (2,519) 1969-12-31 19:00https://www.vtk.org/Bug/file/6008/zfrag458.vtk
zfrag462.vtk (1,937) 1969-12-31 19:00https://www.vtk.org/Bug/file/6009/zfrag462.vtk