Hi Lelin, More recent tutorial to study. ( http://www.openscenegraph.org/projects/osg/wiki/Support/Tutorials#YetAnotherSetofBeginnerTutorials )
Regards. 2009/5/26 Lelin ZHANG <[email protected]> > Hi, Robert, > > Thanks for your reply. I am using the online scene graph tutorial at the > following link: > > > http://www.openscenegraph.org/projects/osg/attachment/wiki/Support/Tutorials/BasicGeometry/BasicGeometry.cpp > > There are codes for adding texture to the pyramid. Even I have commented > all texture related codes, leaving only simple vertex and color information, > the colors are not showing up. > > By the way, do you know if there is any tutorials that might be much more > up to date? Thanks very much. > > Lelin > > > robertosfield wrote: > > Hi Lelin, > > > > I don't know why your model turns out grey, there is just too small a > > code fragment to know why. > > > > A general note, the uses of vertex indices is now deprecated, and will > > eventually be dropped, so this tutorual is very out of date. Could > > you provide the url of the tutorial so we can look at getting the > > reference to vertex indices removed to avoid further confusion. > > > > Robert. > > > > On Tue, May 26, 2009 at 1:34 AM, Lelin ZHANG <> wrote: > > > > > Hi, > > > > > > I am running the example code for 'basic geometry' of the tutorials. It > seems that whatever I tried, the colors of the geometry do not show up. > Everything just turns to be grey. It is frustrating that even I do not make > any changes of the example codes at all, the colors still do not work. Could > anyone give me a hint of the problem on this? > > > > > > Here are the codes for coloring: > > > > > > osg::Vec4Array* colors = new osg::Vec4Array; > > > colors->push_back(osg::Vec4(1.0f, 0.0f, 0.0f, 1.0f) ); //index 0 red > > > colors->push_back(osg::Vec4(0.0f, 1.0f, 0.0f, 1.0f) ); //index 1 green > > > colors->push_back(osg::Vec4(0.0f, 0.0f, 1.0f, 1.0f) ); //index 2 blue > > > colors->push_back(osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f) ); //index 3 white > > > > > > osg::TemplateIndexArray > > > <unsigned int, osg::Array::UIntArrayType,4,4> *colorIndexArray; > > > colorIndexArray = > > > new osg::TemplateIndexArray<unsigned int, > osg::Array::UIntArrayType,4,4>; > > > colorIndexArray->push_back(0); > > > colorIndexArray->push_back(1); > > > colorIndexArray->push_back(2); > > > colorIndexArray->push_back(3); > > > colorIndexArray->push_back(0); > > > > > > pyramidGeometry->setColorArray(colors); > > > pyramidGeometry->setColorIndices(colorIndexArray); > > > pyramidGeometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX); > > > ... > > > > > > Thank you! > > > > > > Cheers, > > > Lelin > > > > > > ------------------ > > > Read this topic online here: > > > http://forum.openscenegraph.org/viewtopic.php?p=12933#12933 > > > > > > > > > > > > > > > > > > _______________________________________________ > > > osg-users mailing list > > > > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > > > > > _______________________________________________ > > osg-users mailing list > > > > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > > ------------------ > > Post generated by Mail2Forum > > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=12948#12948 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- Ümit Uzun
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