[Paraview] [EXTERNAL] Re: Calculating the distance between two surfaces as a function of time during large deformation process

Thu Jan 1 10:50:56 EST 2015

Cory,

disk_out_ref.exo  and disk_out_ref.ex2 are one and the same, I think. I am
not aware of a different disk_out_ref.exo

On Wed, Dec 31, 2014 at 10:10 PM, Cory Quammen <cory.quammen at kitware.com>
wrote:

> Hi Alan,
>
> Is the file disk_out_ref.exo different from the file disk_out_ref.ex2
> that comes with the ParaView test data?
>
> Thanks,
> Cory
>
> On Wed, Dec 24, 2014 at 8:15 PM, Scott, W Alan <wascott at sandia.gov> wrote:
> > Cory,
> > Excellent idea.  I did try, and yes - I end up with polydata.  However,
> I then don't see any output.  Mind giving this a try?  Utkarsh should have
> disk_out_ref.exo.  What I did;
> >
> > Read in disk_out_ref.exo.
> > merge blocks
> > extract surface.
> > read in disk_out_ref.exo (yes, I know I could have used the original.
> Being pre-Christmas brain dead.)
> > transform.  X translation 20.  (disks now have a distance from each
> other of about 8.5 units.)
> > merge blocks
> > extract surface.
> > highlight each extract surface.
> > programmable filter.  Paste in your code.
> >
> > No output variable named "distance" to be found.
> >
> > Thanks,
> >
> > Alan
> >
> > -----Original Message-----
> > From: Cory Quammen [mailto:cory.quammen at kitware.com]
> > Sent: Wednesday, December 24, 2014 3:10 PM
> > To: Scott, W Alan
> > Cc: Biddiscombe, John A.; paraview at paraview.org
> > Subject: Re: [EXTERNAL] Re: [Paraview] Calculating the distance between
> two surfaces as a function of time during large deformation process
> >
> > Alan,
> >
> > disk_out_ref.ex2 -> Merge Blocks -> Extract Surface should get you
> polydata that you can feed into the programmable filter.
> >
> > Thanks,
> > Cory
> >
> > On Wed, Dec 24, 2014 at 12:44 PM, Scott, W Alan <wascott at sandia.gov>
> wrote:
> >> Very nice and simple!  Thanks.
> >>
> >> I tried running it on two instances of disk_out_ref.exo, and it
> complained that it has MultiBlock data as inputs, but needs PolyData.
> Being a neophyte with the programmable filter, how can I either convert my
> data, or convert the filter to use multiblock data?
> >>
> >> Thanks!!
> >>
> >> Alan
> >>
> >> -----Original Message-----
> >> From: Cory Quammen [mailto:cory.quammen at kitware.com]
> >> Sent: Tuesday, December 23, 2014 8:32 PM
> >> To: Biddiscombe, John A.
> >> Cc: Scott, W Alan; paraview at paraview.org
> >> Subject: [EXTERNAL] Re: [Paraview] Calculating the distance between
> >> two surfaces as a function of time during large deformation process
> >>
> >> Hi Alan,
> >>
> >> There is a filter in VTK called vtkDistancePolyDataFilter. It takes two
> polydata as inputs and produces up two two outputs, each with an the
> (optionally) signed distance from each point in the first polydata to the
> closest point on the second polydata. If the polydata inputs overlap and
> the signed distance is requested, the distance may be negative, which means
> that the point at which the distance is computed is inside the other
> polydata.
> >>
> >> Attached is a ParaView 4.2 state file with a Programmable Filter that
> exposes the vtkDistancePolyDataFilter. It could also be exposed as an XML
> plugin.
> >>
> >> Cheers,
> >> Cory
> >>
> >> On Tue, Dec 23, 2014 at 6:20 PM, Biddiscombe, John A. <biddisco at cscs.ch>
> wrote:
> >>> The way I did this was to use one surface as a “source” - fire rays
> >>> from this surface along the surface normal until they hit the “target”
> >>> and return the distance. Then use the distances for every source node
> >>> as a new field which is output. One requires ideally a source mesh
> >>> with quite dense points to get a good sampling.
> >>>
> >>> JB
> >>>
> >>> On 23/12/14 21:02, "Scott, W Alan" <wascott at sandia.gov> wrote:
> >>>
> >>>>I have a user that asked the following question.  Any ideas how to do
> >>>>this?
> >>>>
> >>>>Thanks,
> >>>>
> >>>>Alan
> >>>>
> >>>>
> >>>>Greetings,
> >>>>
> >>>>I need to quantify the distance between two curved and deforming
> >>>>surfaces (large deformation mechanical analysis) as a function of
> >>>>time in batch mode. I don't know (and don't want to know) which two
> >>>>node points are the closest. Could you outline how you would code up
> something like this ?
> >>>>
> >>>>George
> >>>>
> >>>>
> >>>>
> >>>>
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> >>
> >>
> >>
> >> --
> >> Cory Quammen
> >> R&D Engineer
> >> Kitware, Inc.
> >
> >
> >
> > --
> > Cory Quammen
> > R&D Engineer
> > Kitware, Inc.
>
>
>
> --
> Cory Quammen
> R&D Engineer
> Kitware, Inc.
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView
>
> Search the list archives at: http://markmail.org/search/?q=ParaView
>
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