Greetings Utkarsh!
Your advice is exceptional; the remaining "unwanted" STL triangles
attached to the desired STL surface have been removed.
A couple of lessons:
(1) At first the instruction sequence seemed to me a little awkward.
However, after repeated use it became rhythmic. I did find it better to
reset/uncheck *Invert Selection* of the*Edit | Find Data* panel before
going to the next location.
(2) It took a couple of tries for me to discover that the unwanted
fin-like attachments were actually zero-thickness regions with matching
back-to-back STL-triangles -- one for each side, and hence, it required
a second removal go around. (The original 30+ layered tetrahedral mesh
as our Japanese colleagues would say, "was not so good.")
(3) A triangular hole required a hand-crafted STL-triangle with a
borrowed normal-vector from a neighbor triangle. After writing out the
datum set, hand editing the STL-file to add in the missing triangle and
renaming a copy of the datum-set, a read and write with PV showed that
PV 'corrected' the normal vector. Whoever wrote that section of code
deserves a pat on the back.
(4) The PV window with the row of miniature icons in upper-left corner
took me a couple of tries to figure out that add & subtract were clues
to use ctrl & shift keys when making selections. IMHO, well done.
(5) Message to myself: "The more you use ParaView, the smarter it gets."
Thanks for really great tool!
Sam Key
On 3/21/2017 6:45 AM, Utkarsh Ayachit wrote:
You can use the *Extract Selection* filter. Before you create the
filter, make sure you invert the selection so that you are removing
the selected selected. To do that, once you've made your selection, go
to *Edit | Find Data* and then check the *Invert Selection *check box.
Now, from the dialog itself, you can click the *Extract
Selection* button to create a new *Extract Selection* filter. The
output of this filter is *Unstructured Grid * and STL only supports
*Polydata, *hence apply the *Extract Surface* filter again and then
you shall be able to save out the result as a new STL file.
Hope that helps.
Utkarsh
On Mon, Mar 20, 2017 at 5:18 PM, Samuel Key <samuel...@bresnan.net
<mailto:samuel...@bresnan.net>> wrote:
Hello All,
I am working with a less than perfect STL surface. I was able to
use PV's Clip filter spheres to remove a number of spatially
isolated undesirable triangle clusters. (With a new application
of the Extract Surface Filter, I was able to use Save Data to get
an updated/revised STL file.)
I am now working on removing triangles that have a point or an
edge attached like a fish fin to the desired STL surface. I have
successfully selected the undesirable fin-like triangles. Now, I
want to delete (or Clip) these triangles to remove them from the
datum set. Right-click delete does not appear to be an option?
Is there some way to delete these selected STL triangles from the
Datum set?
Regards,
Sam Key
FMA Development
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