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From: skunkwerk <sku...@gm...> - 2008-05-08 19:31:06
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thanks Paolo, that solved the immediate problem. I'm having trouble compiling, though. the error i'm getting is: release/moc_filter_texture.o:(.data.rel.ro._ZTV19FilterTexturePlugin[vtable for FilterTexturePlugin]+0x4c): undefined reference to `FilterTexturePlugin::applyFilter(QAction*, MeshModel&, FilterParameterSet&, bool (*)(int, char const*))' I changed the function definition from the above to applyFilter(QAction *filter, MeshModel &m, FilterParameterSet &par, vcg::CallBackPos * cb) but can't figure out where the old definition is still present, as the .h file has the same definition. any ideas? thanks imran On Thu, May 8, 2008 at 12:35 AM, Paolo Cignoni <pao...@is...> wrote: > fit->cWT(0).N() > the small c before WT means that you are asking for a constant access so > you can read the values inside WT but you cannot change them. > you should use something like fit->WT(0).N() obviously assuming that fit is > not a constfaceiterator. > > We are building up some tutorial on the vcg foundations you can find a > first draft at > > http://vcg.sourceforge.net/mediawiki/index.php/Tutorial > > p. > > > > > skunkwerk wrote: > > thanks paolo, > any hints on why i can't modify faces with the iterator i'm using? am i > using the wrong kind? i saw 'constfaceiterator' in the code somewhere, so I > figured 'faceiterator' wouldn't be const. > > imran > > On Wed, May 7, 2008 at 3:44 PM, Paolo Cignoni <pao...@is...> > wrote: > >> Translated. sorry for the italian comments that are surviving in a lot of >> places... >> >> >> skunkwerk wrote: >> >> i'm using a CMesh0::FaceIterator but it seems like it's a const for some >> reason - when I try to change values of the face, like fit->cWT(0).N() i get >> compilation errors about 'assignment of read-only location.' what's the >> proper way to modify these values? >> >> i was translating some of the italian comments in rect_packer.cpp but >> couldn't find translations for the following: >> posiziono - position? >> pe plus' >> could someone please translate these to english for me? >> >> thanks >> imran >> >> On Tue, Apr 29, 2008 at 11:48 PM, skunkwerk <sku...@gm...> wrote: >> >>> thanks Paolo, >>> i guess CMesh0 is how i'll get the faceiterator - i'm working on some >>> collada importer optimizations right now but might get back to this in a few >>> days. what options do we have for a numerical solver? >>> >>> imran >>> >>> On Tue, Apr 29, 2008 at 2:22 PM, Paolo Cignoni < >>> pao...@is...> wrote: >>> >>>> I like your proposal, but I strongly suggest you to proceed gradually >>>> and start and complete and test a functionality at a time. >>>> >>>> First of all start to just add a simple rectangular packer, >>>> >>>> - then try to use the rect_packer provided code >>>> >>>> - then try to look at the code in the trimesh/textcoord_optimization.h >>>> file. >>>> >>>> Before facing LSCM we should solve the issue of what numerical solver >>>> use for it and for other issues that we have around in the vcg. >>>> I hope we could take some decision in the next weeks about the numeric >>>> solver in the vcg. >>>> >>>> I noticed that some notes on the basic types were missing so i added it >>>> in http://meshlab.sourceforge.net/wiki/index.php/Writing_a_Plugin >>>> Feel also free to contribute to the wiki in the part about the writing >>>> of the plugins when you see points needing some clarification or a deeper >>>> discussion. >>>> >>>> >>>> cheers >>>> p. >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> skunkwerk wrote: >>>> >>>> thanks for the hints paolo, >>>> i wanted to use this algorithm: >>>> http://alice.loria.fr/php/article.php?pub=../publications/papers/2002/lscm >>>> but it seemed like it needed information on the actual models, and was >>>> taking in arbitrarily-shaped textures. >>>> >>>> the only other algorithm i've found for texture packing is a recursive >>>> tree-based one: >>>> http://www.blackpawn.com/texts/lightmaps/default.html >>>> >>>> i tried this line (along with everything else i could think of): >>>> MeshModel::FaceIterator fit; >>>> but it didn't like the 'MeshModel' part - is 'mm' not an object of type >>>> MeshModel? >>>> >>>> if someone could suggest the correct syntax i can get started on testing >>>> the texture atlas >>>> >>>> thanks, >>>> imran >>>> >>>> On Tue, Apr 29, 2008 at 2:13 AM, Paolo Cignoni < >>>> pao...@is...> wrote: >>>> >>>> skunkwerk wrote: >>>> > i've attached a texture atlas function. >>>> > >>>> > it compiles except for a ConstFaceIterator error - I've tried using >>>> > the template<typename MESHTYPE> but that didn't work either. the >>>> > algorithm is VERY basic (textures are added one after another in a >>>> > row), but should work. i couldn't find any algorithms for more >>>> > closely-packed positioning, but i could look at the code in >>>> > openscenegraph's texture atlas generator. >>>> Nice Job! >>>> >>>> The right place for this stuff is the filter_texture plugin that i have >>>> just added, >>>> Now it is just a placeholder filter you should add your code there. >>>> >>>> Important: >>>> In the plugin dir you can find a rect_packer that should make good job. >>>> please use it to build a good packing of the texture size >>>> >>>> > questions: >>>> > 1) if someone could tell me how to iterate through faces from a >>>> > function outside vcg, that'd be great so i could test this out >>>> We have started to improve the developer documentation: two new pages >>>> in >>>> the wiki should help you >>>> >>>> http://meshlab.sourceforge.net/wiki/index.php/Accessing_the_mesh >>>> http://meshlab.sourceforge.net/wiki/index.php/Algorithms >>>> >>>> > 2) paolo, what's the best location of this function? i'm currently >>>> > putting it in mainwindow_Runtime.cpp to test it out >>>> The right location is inside the filter_texture plugin >>>> possible parameter of the plugin: >>>> - format of the saved texture (as a enum) >>>> - max size of the texture >>>> >>>> > 3) how do I access the data from already-loaded textures? so i can >>>> > prevent having to load all the textures again... >>>> Do not worry about that. Feel free to use QT to load again the images >>>> and process them, it should not create a significant overhead. >>>> >>>> Once your processing is ended (and you have saved the new texture) you >>>> should update the texture names stored inside the mesh sending a signal >>>> to the updateTexture() slot of the mainwindow (the parent of the >>>> action) >>>> >>>> cheers >>>> p. >>>> >>>> -- >>>> 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 2008 JavaOne(SM) Conference >>>> Don't miss this year's exciting event. There's still time to save $100. >>>> Use priority code J8TL2D2. >>>> >>>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >>>> _______________________________________________ >>>> Meshlab-devel mailing list >>>> Mes...@li... >>>> https://lists.sourceforge.net/lists/listinfo/meshlab-devel >>>> >>>> >>>> ------------------------------ >>>> >>>> ------------------------------------------------------------------------- >>>> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >>>> Don't miss this year's exciting event. There's still time to save $100. >>>> Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >>>> >>>> ------------------------------ >>>> >>>> _______________________________________________ >>>> Meshlab-devel mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/meshlab-devel >>>> >>>> >>>> >>>> -- >>>> 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 2008 JavaOne(SM) Conference >>>> Don't miss this year's exciting event. There's still time to save $100. >>>> Use priority code J8TL2D2. >>>> >>>> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >>>> _______________________________________________ >>>> Meshlab-devel mailing list >>>> Mes...@li... >>>> https://lists.sourceforge.net/lists/listinfo/meshlab-devel >>>> >>>> >>> >> ------------------------------ >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by the 2008 JavaOne(SM) Conference >> Don't miss this year's exciting event. There's still time to save $100. >> Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >> >> ------------------------------ >> >> _______________________________________________ >> Meshlab-devel mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/meshlab-devel >> >> >> >> -- >> 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 2008 JavaOne(SM) Conference >> Don't miss this year's exciting event. There's still time to save $100. >> Use priority code J8TL2D2. >> >> http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone >> _______________________________________________ >> Meshlab-devel mailing list >> Mes...@li... >> https://lists.sourceforge.net/lists/listinfo/meshlab-devel >> >> > ------------------------------ > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > > ------------------------------ > > _______________________________________________ > Meshlab-devel mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/meshlab-devel > > > > -- > 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 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Meshlab-devel mailing list > Mes...@li... > https://lists.sourceforge.net/lists/listinfo/meshlab-devel > > |
