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From: skunkwerk <sku...@gm...> - 2008-07-23 03:11:14
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i made two more fixes to make the filter work, one of which was the order in which the textures were drawn into the atlas: i was starting at 0,0 at the top-left, whereas i believe meshlab wants 0,0 at the bottom-left. it works fine with this modified file: www.akbars.net/TextureDoublex2.ply but still not on my box... imran On Tue, Jul 22, 2008 at 6:06 PM, skunkwerk <sku...@gm...> wrote: > 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 >>> >> >> > |
