Re: [Meshlab-devel] quadric filters

[skunkwerk <sku...@gm...>]

Paolo,
    i'm still looking for some help using refine.h to clip triangles... do
you think you could add some comments/example code to the file, or point me
to the subdivision code that uses it?

thanks,
imran

On Tue, Aug 5, 2008 at 1:07 PM, skunkwerk <sku...@gm...> wrote:

> could someone send me the minerva file as a collada?  maybe it won't crash
> my machine that way.
> i've tested the texture atlas on about 20 different models, and it worked
> fine with all of them.  however, when a model has a lot of textures and I
> have to increase the size of the texture atlas from the default, the
> resulting model does not load the textures properly - i get this error in
> meshlab:
> QOpenGLPaintEngine: failed to create fragment programs
> and the texture atlas image looks incorrect (has gaps in between, see
> www.akbars.net/textureatlas.png)
>
> Paolo, when you tried the minerva with the texture atlas, did you have to
> increase the size of the atlas?  did you get the same error when loading the
> saved file?
>
>
> On Mon, Aug 4, 2008 at 2:31 PM, Paolo Cignoni <pao...@is...>wrote:
>
>>  skunkwerk wrote:
>>
>> thanks Paolo,
>>    it's nice to have you back.  i didn't feel the wiki page answered my
>> questions:
>> 1)  what's the definition of a border & boundary within meshlab, and are all
>> non-manifold faces bordering faces?
>>
>>
>>  I have tried to improve the doc.
>>
>>
>> http://vcg.sourceforge.net/index.php/Tutorial#Boundary_relations_and_adjacency
>>
>> It is nice to have someone that actually tests our scarce documentation :)
>>
>>
>>  2)  do the number of leaves correspond to the number of border faces, or
>> what?
>>
>>
>>  I have not understood what do you mean with leaves? what leaves? what
>> tree are you referring to? I have lost the context.
>>
>>  while these are from other threads, i don't want to send 5 emails to the
>> list:
>> 3)  the same file you sent me to test on the texture filter froze my entire
>> machine & meshlab - did you not encounter any issues with it?  was it not
>> working with the 'copied tiles' option or with 'resampled'?
>>
>>
>>  yes it does not works with your filter.  It is a typical dirty mesh
>> against which algorithms should be made robust.
>> (the mesh we are talking about is the old textured minerva 250 face and
>> two textures)
>>
>> 4)  i tried loading 2 layers into meshlab to use with the hausdorff distance
>> plugin, but i don't think the layers are working.  any suggestions?
>>
>>
>>  I have tried on different architecture and layers seems to be correctly
>> working.
>> Can some one be able to replicate this issue?
>>
>> 5)  trying to clip triangles with refine.h: you said i need to define which
>> edges of the triangle need to be split - but how do I define the points it
>> should be split at?  i tried doing a search for 'subdivision' in the
>> codebase but couldn't find much - could someone point me to the specific
>> file that does some clipping?
>>
>>
>>  I will expand the comment in the refine.h file
>> look for the next commits.
>> p.
>>
>>
>>  regards,
>> imran
>>
>> On Sun, Aug 3, 2008 at 1:26 AM, Paolo Cignoni <pao...@is...> <pao...@is...>wrote:
>>
>>
>>
>>  skunkwerk wrote:
>>
>>
>>  Paolo, may I ask how you determined the number of leaves in the model?
>>
>>
>>   The
>>
>>
>>  .dae had a maximum of 2,766 triangles in one "node"
>>
>> sorry for all the questions
>>
>> imran
>>
>> On Mon, Jul 21, 2008 at 6:10 AM, Paolo Cignoni <
>>
>>
>>  pao...@is...>wrote:
>>
>>
>> I have added some notes on the border flags in the vcg wikihttp://vcg.sourceforge.net/index.php/Flags
>> p.
>>
>>
>>
>> --
>> Paolo Cignoni  -- Senior Researcher
>> Visual Computing Laboratory - ISTI - CNR
>> http://vcg.isti.cnr.it/~cignoni <http://vcg.isti.cnr.it/%7Ecignoni> <http://vcg.isti.cnr.it/%7Ecignoni> <http://vcg.isti.cnr.it/%7Ecignoni>
>>
>>
>> ISTI - CNR
>> Via Moruzzi 1,
>> 56124 Pisa
>> ITALY
>>
>>
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>> --
>> Paolo Cignoni  -- Senior Researcher
>> Visual Computing Laboratory - ISTI - CNR http://vcg.isti.cnr.it/~cignoni <http://vcg.isti.cnr.it/%7Ecignoni>
>>
>> ISTI - CNR
>> Via Moruzzi 1,
>> 56124 Pisa
>> ITALY
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