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From: skunkwerk <sku...@gm...> - 2008-07-23 01:06:58
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i've committed a fix that should now make the texturedouble.ply generate correct UV coords... however models with more complex texturing still don't work properly... any suggestions on how to debug this? i think i'll take the same texturedouble.ply and try doubling the original uv coords to see how it handles that... imran On Tue, Jul 22, 2008 at 4:49 PM, skunkwerk <sku...@gm...> wrote: > paolo, > you're correct, the assert was happening on a null image, even though > i've put in a check to not do anything on null images... but i don't think > any changes are necessary. > > i'll test out the texturedouble.ply and report back my findings > > i have been testing out this model (a simple cube with a different texture > on every face):www.akbars.net/boxAtlasbig.zip > > the texture atlas is generated fine, but the resulting model does not look > right. i looked through the debug output, and as far as i can see, each > material's uvs are offset to the correct part of the texture atlas (i did > this by comparing the material number of that face and its uvs to the > position of that material in the atlas. the second division is the final uv > that's saved): > ------------------ > > material 0 position: 805 , 1073 > > U: 1.10381 V: 1.98863 > > new (first division) U: 0.839221 new V: 0.740719 > > new (second division) U: 0.955932 new V: 0.769647 > > ------------------ > > material 0 position: 805 , 1073 > > U: 0.788531 V: 0.303902 > > new (first division) U: 0.599517 new V: 0.113197 > > new (second division) U: 0.897179 new V: 0.593546 > > ------------------ > > material 0 position: 805 , 1073 > > U: 0.788531 V: 1.98863 > > new (first division) U: 0.599517 new V: 0.740719 > > new (second division) U: 0.897179 new V: 0.769647 > > ------------------ > > material 0 position: 805 , 1073 > > U: 0.788531 V: 0.303902 > > new (first division) U: 0.599517 new V: 0.113197 > > new (second division) U: 0.897179 new V: 0.593546 > > ------------------ > > material 0 position: 805 , 1073 > > U: 1.10381 V: 1.98863 > > new (first division) U: 0.839221 new V: 0.740719 > > new (second division) U: 0.955932 new V: 0.769647 > > ------------------ > > material 0 position: 805 , 1073 > > U: 1.10381 V: 0.303902 > > new (first division) U: 0.839221 new V: 0.113197 > > new (second division) U: 0.955932 new V: 0.593546 > > ------------------ > > material 3 position: 0 , 1073 > > U: 1.98863 V: 0 > > new (first division) U: 0.740719 new V: 0 > > new (second division) U: 0.555712 new V: 0.56178 > > ------------------ > > material 3 position: 0 , 1073 > > U: 0.303902 V: 1.00833 > > new (first division) U: 0.113197 new V: 0.502075 > > new (second division) U: 0.084924 new V: 0.720026 > > ------------------ > > material 3 position: 0 , 1073 > > U: 0.303902 V: 0 > > new (first division) U: 0.113197 new V: 0 > > new (second division) U: 0.084924 new V: 0.56178 > > ------------------ > > material 3 position: 0 , 1073 > > U: 0.303902 V: 1.00833 > > new (first division) U: 0.113197 new V: 0.502075 > > new (second division) U: 0.084924 new V: 0.720026 > > ------------------ > > material 3 position: 0 , 1073 > > U: 1.98863 V: 0 > > new (first division) U: 0.740719 new V: 0 > > new (second division) U: 0.555712 new V: 0.56178 > > ------------------ > > material 3 position: 0 , 1073 > > U: 1.98863 V: 1.00833 > > new (first division) U: 0.740719 new V: 0.502075 > > new (second division) U: 0.555712 new V: 0.720026 > > ------------------ > > material 2 position: 805 , 1609 > > U: 1.10381 V: 0 > > new (first division) U: 0.839221 new V: 0 > > new (second division) U: 0.905876 new V: 0.842408 > > ------------------ > > material 2 position: 805 , 1609 > > U: 0.788531 V: 1.00833 > > new (first division) U: 0.599517 new V: 0.502075 > > new (second division) U: 0.86142 new V: 0.921531 > > ------------------ > > material 2 position: 805 , 1609 > > U: 1.10381 V: 1.00833 > > new (first division) U: 0.839221 new V: 0.502075 > > new (second division) U: 0.905876 new V: 0.921531 > > ------------------ > > material 2 position: 805 , 1609 > > U: 0.788531 V: 1.00833 > > new (first division) U: 0.599517 new V: 0.502075 > > new (second division) U: 0.86142 new V: 0.921531 > > ------------------ > > material 2 position: 805 , 1609 > > U: 1.10381 V: 0 > > new (first division) U: 0.839221 new V: 0 > > new (second division) U: 0.905876 new V: 0.842408 > > ------------------ > > material 2 position: 805 , 1609 > > U: 0.788531 V: 0 > > new (first division) U: 0.599517 new V: 0 > > new (second division) U: 0.86142 new V: 0.842408 > > ------------------ > > material 5 position: 310 , 1675 > > U: 0.620122 V: 0 > > new (first division) U: 0.214271 new V: 0 > > new (second division) U: 0.346621 new V: 0.876963 > > ------------------ > > material 5 position: 310 , 1675 > > U: 2.51422 V: 1.26042 > > new (first division) U: 0.86874 new V: 0.557604 > > new (second division) U: 0.522895 new V: 0.942942 > > ------------------ > > material 5 position: 310 , 1675 > > U: 2.51422 V: 0 > > new (first division) U: 0.86874 new V: 0 > > new (second division) U: 0.522895 new V: 0.876963 > > ------------------ > > material 5 position: 310 , 1675 > > U: 2.51422 V: 1.26042 > > new (first division) U: 0.86874 new V: 0.557604 > > new (second division) U: 0.522895 new V: 0.942942 > > ------------------ > > material 5 position: 310 , 1675 > > U: 0.620122 V: 0 > > new (first division) U: 0.214271 new V: 0 > > new (second division) U: 0.346621 new V: 0.876963 > > ------------------ > > material 5 position: 310 , 1675 > > U: 0.620122 V: 1.26042 > > new (first division) U: 0.214271 new V: 0.557604 > > new (second division) U: 0.346621 new V: 0.942942 > > ------------------ > > material 4 position: 0 , 1675 > > U: 0.264336 V: 0 > > new (first division) U: 0.0851076 new V: 0 > > new (second division) U: 0.0245884 new V: 0.876963 > > ------------------ > > material 4 position: 0 , 1675 > > U: 2.37024 V: 1.26042 > > new (first division) U: 0.76314 new V: 0.557604 > > new (second division) U: 0.220478 new V: 0.942942 > > ------------------ > > material 4 position: 0 , 1675 > > U: 0.264336 V: 1.26042 > > new (first division) U: 0.0851076 new V: 0.557604 > > new (second division) U: 0.0245884 new V: 0.942942 > > ------------------ > > material 4 position: 0 , 1675 > > U: 2.37024 V: 1.26042 > > new (first division) U: 0.76314 new V: 0.557604 > > new (second division) U: 0.220478 new V: 0.942942 > > ------------------ > > material 4 position: 0 , 1675 > > U: 0.264336 V: 0 > > new (first division) U: 0.0851076 new V: 0 > > new (second division) U: 0.0245884 new V: 0.876963 > > ------------------ > > material 4 position: 0 , 1675 > > U: 2.37024 V: 0 > > new (first division) U: 0.76314 new V: 0 > > new (second division) U: 0.220478 new V: 0.876963 > > ------------------ > > material 1 position: 0 , 0 > > U: 1.89619 V: 0.303902 > > new (first division) U: 0.70629 new V: 0.113197 > > new (second division) U: 0.70629 new V: 0.0635917 > > ------------------ > > material 1 position: 0 , 0 > > U: 0.211469 V: 1.98863 > > new (first division) U: 0.0787676 new V: 0.740719 > > new (second division) U: 0.0787676 new V: 0.416121 > > ------------------ > > material 1 position: 0 , 0 > > U: 0.211469 V: 0.303902 > > new (first division) U: 0.0787676 new V: 0.113197 > > new (second division) U: 0.0787676 new V: 0.0635917 > > ------------------ > > material 1 position: 0 , 0 > > U: 0.211469 V: 1.98863 > > new (first division) U: 0.0787676 new V: 0.740719 > > new (second division) U: 0.0787676 new V: 0.416121 > > ------------------ > > material 1 position: 0 , 0 > > U: 1.89619 V: 0.303902 > > new (first division) U: 0.70629 new V: 0.113197 > > new (second division) U: 0.70629 new V: 0.0635917 > > ------------------ > > material 1 position: 0 , 0 > > U: 1.89619 V: 1.98863 > > new (first division) U: 0.70629 new V: 0.740719 > > new (second division) U: 0.70629 new V: 0.416121 > > global: 1073 , 1910 > > inserted texture 0 into atlas at position: 805 1073 > > inserted texture 1 into atlas at position: 0 0 > > inserted texture 2 into atlas at position: 805 1609 > > inserted texture 3 into atlas at position: 0 1073 > > inserted texture 4 into atlas at position: 0 1675 > > inserted texture 5 into atlas at position: 310 1675 > > > On Tue, Jul 22, 2008 at 4:30 PM, Paolo Cignoni <pao...@is...> > wrote: > >> skunkwerk wrote: >> > Hey Sebastian, >> > this one worked for me: www.akbars.net/10.zip >> > i've been testing with collada models from >> > sketchup.google.com/3dwarehousebut that's because my version of the >> > collada importer works ok with the >> > textures - i don't think the one in subversion has been fixed yet... >> > >> > try increasing the size of the texture atlas until i can get the >> resampled >> > tiles working. i'm going to test out the results on a simple box today >> > >> > paolo, the rect_packer.cpp has a bunch of asserts in it... i'd like to >> > change them to return false, so that the atlas will fail, but not crash >> > whenever some of the images are null, etc. the other way would be to >> try to >> > do those checks in the filter itself. which would you recommend? >> > >> > imran >> > >> > On Tue, Jul 22, 2008 at 3:25 AM, Sebastian Herholz < >> > seb...@go...> wrote: >> > >> > >> >> I have tried too the atlas builder but it failed to build a correct mesh >> (but without crashing :) ) on the very very simple model >> texturedouble.ply that you can find among the meshlab sample models. >> >> This model is composed by just two squares, each one of them textured >> with a different texture. >> your filter builds a correct atlas texture but it assigns wrong tex >> coords to the mesh. >> >> >> About the rect packer what are exactly the asserts that worry you? >> From what i could see you they trigger on very trashy situations that >> should be cleaned before (zero sized textures and so on). I could have >> missed some, so what assert()'s did you refer to? >> >> cheers >> >> -- >> 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 >> >> >> ------------------------------------------------------------------------- >> This SF.Net email is sponsored by the Moblin Your Move Developer's >> challenge >> Build the coolest Linux based applications with Moblin SDK & win great >> prizes >> Grand prize is a trip for two to an Open Source event anywhere in the >> world >> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >> _______________________________________________ >> Meshlab-devel mailing list >> Mes...@li... >> https://lists.sourceforge.net/lists/listinfo/meshlab-devel >> > > |
