<div dir="ltr">Is `initialize` only used in the readers currently? I believe the goal of that function was just to set vertices, triangles, or any other topology information needed in a single function. It should only be used after the constructor as a utility as far as I understand, so there shouldn't be data already set in the mesh at that point.<div><br></div><div>When/where is this function currently called and creating an issue in your case?</div><div><br></div><div>Also, I think the `clear `should only delete the derived data computed by the initialization input. Is it doing more than that now which would explain why it deletes your data?</div><div><br></div><div>I think having an `initialize` function that clears derived data fields and set core parameters is good, we need to make sure it is called at a good place and does not remove some unexpected fields (but I just think it should be called before you try to set any data in it)</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><span style="color:rgb(136,136,136);font-size:12.8000001907349px">Alexis Girault</span><br style="color:rgb(136,136,136);font-size:12.8000001907349px"><span style="color:rgb(136,136,136);font-size:12.8000001907349px">R&D Engineer in Medical Computing</span><br style="color:rgb(136,136,136);font-size:12.8000001907349px"><span style="color:rgb(136,136,136);font-size:12.8000001907349px">Kitware, Inc.</span><br style="color:rgb(136,136,136);font-size:12.8000001907349px"><br style="color:rgb(136,136,136);font-size:12.8000001907349px"><a href="http://www.kitware.com/" rel="noreferrer" style="color:rgb(17,85,204);font-size:12.8000001907349px" target="_blank">http://www.kitware.com</a><br style="color:rgb(136,136,136);font-size:12.8000001907349px"><font color="#999999"><a href="tel:(919)+969-6990+x325" target="_blank"><span style="font-size:12.8000001907349px">(919) 969-6990 x3</span>25</a></font><br></div></div></div></div></div></div></div></div></div>
<br><div class="gmail_quote">On Thu, Jul 27, 2017 at 5:03 PM, Milef, Nicholas Boris <span dir="ltr"><<a href="mailto:milefn@rpi.edu" target="_blank">milefn@rpi.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">For now, I can just put the seam computation before the clear. However, this will break if the vertex order changes or something like that. Basically, what I'm trying to say is
that I would want users to know explicitly if they're messing up their data. A reinitialize function doesn't convey this imo.
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<div id="m_2321885481294957573divRpF348360" style="direction:ltr"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Imstk-developers [<a href="mailto:imstk-developers-bounces@imstk.org" target="_blank">imstk-developers-bounces@<wbr>imstk.org</a>] on behalf of Milef, Nicholas Boris [<a href="mailto:milefn@rpi.edu" target="_blank">milefn@rpi.edu</a>]<br>
<b>Sent:</b> Thursday, July 27, 2017 4:47 PM<br>
<b>To:</b> Sreekanth Arikatla<div><div class="h5"><br>
<b>Cc:</b> <a href="mailto:imstk-developers@imstk.org" target="_blank">imstk-developers@imstk.org</a><br>
<b>Subject:</b> Re: [Imstk-developers] Clearing surface mesh data on intialization<br>
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<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">I guess where I'm stuck at is why we have an initialize function to begin with. I still can't think of a use-case where we can't either 1) make a new mesh or 2) modify the components
of the old mesh.
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<div id="m_2321885481294957573divRpF585415" style="direction:ltr"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Sreekanth Arikatla [<a href="mailto:sreekanth.arikatla@kitware.com" target="_blank">sreekanth.arikatla@kitware.<wbr>com</a>]<br>
<b>Sent:</b> Thursday, July 27, 2017 4:37 PM<br>
<b>To:</b> Milef, Nicholas Boris<br>
<b>Cc:</b> <a href="mailto:imstk-developers@imstk.org" target="_blank">imstk-developers@imstk.org</a><br>
<b>Subject:</b> Re: [Imstk-developers] Clearing surface mesh data on intialization<br>
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<div dir="ltr">Hi Nick,
<div> If you want to preserve the normals, you can add normals to the Initialize function arg. If the normals are supplied, initialize clears the previous data before assigning. </div>
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jul 27, 2017 at 4:01 PM, Milef, Nicholas Boris <span dir="ltr">
<<a href="mailto:milefn@rpi.edu" target="_blank">milefn@rpi.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">No, I don't. I need to preserve the original normals that ASSIMP imports because ASSIMP calculates the normals correctly. Otherwise, I can't identify the UV seams.
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<div>I can just do this computation in the SurfaceMeshRenderDelegate, but I'm not sure if the normals are used elsewhere after reinitializing the meshes. But isn't reinitializing a mesh dangerous in a multithreaded environment anyway?<br>
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<div id="m_2321885481294957573m_2494556280979792691divRpF630068" style="direction:ltr"><font face="Tahoma" size="2" color="#000000"><b>From:</b> Sreekanth Arikatla [<a href="mailto:sreekanth.arikatla@kitware.com" target="_blank">sreekanth.arikatla@kitware.co<wbr>m</a>]<br>
<b>Sent:</b> Thursday, July 27, 2017 3:55 PM
<div>
<div class="m_2321885481294957573h5"><br>
<b>To:</b> Milef, Nicholas Boris<br>
<b>Cc:</b> <a href="mailto:imstk-developers@imstk.org" target="_blank">imstk-developers@imstk.org</a><br>
<b>Subject:</b> Re: [Imstk-developers] Clearing surface mesh data on intialization<br>
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<div dir="ltr">It could be used in some cases depending on the scenario. Do you plan to call this at every frame?
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<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jul 27, 2017 at 3:53 PM, Milef, Nicholas Boris <span dir="ltr">
<<a href="mailto:milefn@rpi.edu" target="_blank">milefn@rpi.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">Is that a useful use case though? Why not just make a new mesh?
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<div id="m_2321885481294957573m_2494556280979792691m_7396907404221061107divRpF289251" style="direction:ltr">
<font face="Tahoma" size="2" color="#000000"><b>From:</b> Sreekanth Arikatla [<a href="mailto:sreekanth.arikatla@kitware.com" target="_blank">sreekanth.arikatla@kitware.co<wbr>m</a>]<br>
<b>Sent:</b> Thursday, July 27, 2017 3:52 PM<span><br>
<b>To:</b> Milef, Nicholas Boris<br>
<b>Cc:</b> <a href="mailto:imstk-developers@imstk.org" target="_blank">imstk-developers@imstk.org</a><br>
<b>Subject:</b> Re: [Imstk-developers] Clearing surface mesh data on intialization<br>
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<div dir="ltr">Hi Nick,
<div> This is cleared in case one wants to reinitialize the mesh with a different data. Initialize should only be called at initilization or at runtime if the mesh data itself changes. </div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu, Jul 27, 2017 at 3:31 PM, Milef, Nicholas Boris <span dir="ltr">
<<a href="mailto:milefn@rpi.edu" target="_blank">milefn@rpi.edu</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div style="direction:ltr;font-family:Tahoma;color:#000000;font-size:10pt">I'm modifying the SurfaceMesh class currently, but why is all the data cleared on initialization? Is this necessary? I ask because I need this data to correct for the normals seams.</div>
</div>
<br>
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