Hi Dzenan, The difference is almost certainly down to you using the .obj plugin for read and write. The .obj format is not native to the OSG, and if fact is pretty crappy format alround, and certainly not a good base of attempting read/write.
Please try your tests with a .osg or .ive file. Robert. 2010/5/21 Dženan Zukić <[email protected]>: > Hi, > > I have the following code: > > Code: > osg::ref_ptr<Geode> geode=qe2osg(qe); > objWriteCell(qe, "temp.obj"); > grp->addChild(osgDB::readNodeFile("temp.obj")); > grp->addChild(geode); > > > and it produces the attached result. The yellow object is geode (code below > assigns yellow color), while the node is gray (no color gets saved to .obj > file). The point is that these two objects are not in the same position! Can > anyone explain that? The QuadEdge to OSG conversion function is given below, > as well as objWriteCell, if you think it matters. > > Code: > osg::ref_ptr<Geode> qe2osg(Cell *qe) > //converts quadedge structure into osg geode > { > osg::ref_ptr<Geode> geode = new osg::Geode(); > osg::ref_ptr<Geometry> geom = new osg::Geometry(); > > osg::ref_ptr<osg::Vec4Array> colors = new osg::Vec4Array; > osg::ref_ptr<osg::Vec3Array> osgtr = new osg::Vec3Array; > osg::ref_ptr<osg::Vec3Array> normals = new osg::Vec3Array; > > CellFaceIterator cellFaces(qe); > Face *f; > while ((f = cellFaces.next()) != 0) > { > osg::Vec4 color; > osg::Vec3 p1, p2, p3; > osg::Vec3 normal; > > Edge *e=f->getEdge(); > > Vertex *v=e->Org(); //origin of this edge > p1=v->pos; > osgtr->push_back(p1); > normals->push_back(v->normal); > > e=e->Lnext(); > v=e->Org(); > p2=v->pos; > osgtr->push_back(p2); > normals->push_back(v->normal); > > e=e->Lnext(); > v=e->Org(); > p3=v->pos; > osgtr->push_back(p3); > normals->push_back(v->normal); > } > > geom->setVertexArray(osgtr); > geom->setNormalArray(normals); > geom->setNormalBinding(osg::Geometry::BIND_PER_VERTEX); > > colors->push_back(osg::Vec4(1.0f,1.0f,0.0f,0.5f)); > geom->setColorArray(colors); > geom->setColorBinding(osg::Geometry::BIND_OVERALL); > > geom->addPrimitiveSet(new > osg::DrawArrays(osg::PrimitiveSet::TRIANGLES,0,osgtr->size())); > geode->addDrawable(geom); > > return geode.get(); > } > > > > > Code: > static void objWriteCell(Cell *cell, ostream &s, const char *streamname) > { > s << "# " << cell->countVertices() << " vertices\n"; > > { > CellVertexIterator vertices(cell); > > Vertex *vertex; > > while ((vertex = vertices.next())!=0) > s << "v " << vertex->pos[0] << " " > << vertex->pos[1] << " " > << vertex->pos[2] << "\n"; > } > > // write faces in any order > > s << "# " << cell->countFaces() << " faces\n"; > > { > CellFaceIterator faces(cell); > > Face *face; > > while ((face = faces.next())!=0) > { > s << "f"; > > FaceEdgeIterator edges(face); > > Edge *edge; > > while ((edge = edges.next())!=0) > s << " " << edge->Org()->getID(); > > s <<endl; > } > } > } > > > > > Maybe I am not seeing something obvious here, or it is some intricacy or even > bug of OSG. Any comment is appreciated. > > Thank you! > > Cheers, > Dženan[/code] > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=28113#28113 > > > > > Attachments: > http://forum.openscenegraph.org//files/load_file_routine_proglems_582.png > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
