[vtkusers] Create a correct mesh from set of triangles and wrong vertices index numbers

gocarlos gocarlos at ethz.ch
Fri Dec 23 05:02:40 EST 2016

Dear VTK Users

I have some data sets which have several triangles (set of 3 points with x,
y, z) and vertices. (like the OBJ file).
The problem is that the vertices are just in increasing order and not
Using PCL I've seen that when I save my PCL mesh (with unordered vertices)
into STL, the PCL library converts the PCL mesh in VTK polydata and then a
STL file is written to the file system (using VTK).

I tried to look in the source code after the method which vtk used to clean
the mesh to reorder the vertices, but I haven't found anything. 

I'm only interested on how VTK orders the vertices in such a way, that they
are in the right order and the points of the mesh are not duplicate. 
Is there a method to clean the mesh/connect the duplicate points/reorder the
vertices index?

Thanks in advance.  

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