[vtkusers] BooleanOperationPolyDataFilter Problems

[Nabil KHALIFA]

Thank you Andras for your reply.
By the way, do you recommande any other library?


On 3 July 2017 at 21:55, Andras Lasso <lasso at queensu.ca> wrote:

> Unfortunately, these Boolean filters in VTK are not reliable. Result mesh
> contains errors - parts missing, strange shapes are added - maybe in about
> 10% of the cases, even if triangles are not particularly skinny. By
> slightly changing the inputs we sometimes get correct results.
>
>
>
> When we need something that works every time then we convert input meshes
> to images, perform Boolean operations on images, and convert the resulting
> image to mesh. Unfortunately, depending on the image resolution, this is a
> computationally expensive and somewhat lossy operation.
>
>
>
> Andras
>
>
>
> *From: *Bill Lorensen <bill.lorensen at gmail.com>
> *Sent: *Monday, July 3, 2017 10:55
> *To: *Nabil KHALIFA <nabil.bhk at gmail.com>
> *Cc: *VTK Users <vtkusers at vtk.org>
> *Subject: *Re: [vtkusers] BooleanOperationPolyDataFilter Problems
>
>
>
>
> Maybe.
>
>
> On Mon, Jul 3, 2017 at 10:54 AM, Nabil KHALIFA <nabil.bhk at gmail.com>
> wrote:
> > so add new points and remesh could solve it?
> >
> > On 3 July 2017 at 16:41, Bill Lorensen <bill.lorensen at gmail.com> wrote:
> >>
> >> Please include vtk users mailing list... Also I've changed the
> subject...
> >>
> >> The gears have lots of long skinny triangles. I suspect this is
> >> causing problems with the boolean algorithm.
> >>
> >> Bill
> >>
> >>
> >>
> >> On Mon, Jul 3, 2017 at 2:36 AM, Nabil KHALIFA <nabil.bhk at gmail.com>
> wrote:
> >> > Hi Bill,
> >> >
> >> > I have a problem about hole filling.
> >> > I want to apply boolean operation (subtraction) on meshes using VTK
> >> > filter,
> >> > but i get an open mesh at the end.
> >> > I followed the example in the vtk examples using
> >> > BooleanOperationPolyDataFilter.
> >> > Do you have any idea on how to solve it.
> >> > Please find attached my input data and the output.
> >> >
> >> > Many thanks.
> >> >
> >> > On 2 July 2017 at 20:00, Bill Lorensen <bill.lorensen at gmail.com>
> wrote:
> >> >>
> >> >> IF you see errors or improvemens please follow the procedure here:
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> >> >>
> >> >>
> >> >> On Jul 2, 2017 1:55 PM, "oblakr" <2448.rok at gmail.com> wrote:
> >> >>>
> >> >>> Hi,
> >> >>>
> >> >>> this solves my problem. Thank you very much, very appreciated.
> >> >>>
> >> >>> Best regards,
> >> >>> Rok
> >> >>>
> >> >>>
> >> >>>
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> >> >
> >> >
> >> >
> >> > --
> >> > Nabil Khalifa
> >>
> >>
> >>
> >> --
> >> Unpaid intern in BillsBasement at noware dot com
> >
> >
> >
> >
> > --
> > Nabil Khalifa
>
>
>
> --
> Unpaid intern in BillsBasement at noware dot com
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-- 
Nabil Khalifa
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