Hi David
You're write, it's my ref_pr !!
I was searching in another direction, so I haven't saw it.
thanks a lot David and Alberto.
Regards,
Vincent.
2008/4/30 David Callu <[EMAIL PROTECTED]>:
> Hi Vincent,
>
>
> 2008/4/30 Vincent Bourdier <[EMAIL PROTECTED]>:
>
> > Hi all,
> > Trying for hours to create a new geode, I'am having a bug I can't fix
> >
> > Doing
> >
> > > _root->addChild(createSun(config->Sunpath));
> > >
> > the program crashes
> >
> > This is the code of "createSun"
> >
> > osg::Geode* createSun(std::string texturePath)
> > > {
> > > int nb_edge = 30;
> > > float radius = SUN_RADIUS/UNIT_METER/SUN_DIVIDER;
> > > osg::Vec3 center = osg::Vec3(SUN_CENTER);
> > > center.normalize();
> > > center *= SUN_DISTANCE/UNIT_METER/SUN_DIVIDER;
> > >
> > > osg::ref_ptr<osg::Billboard> billboard = new osg::Billboard();
> >
> > problem is here, you create a pointer in a osg::ref_ptr,
> it will be unref and deleted when you exit of the current scope (osg::Geode*
> createSun(std::string texturePath) scope)
> so you return a deleted pointer, and .... ARggg crach
>
>
>
> >
> > > osg::Geometry* geometry = new osg::Geometry();
> > >
> > >
> > > osg::Vec3Array* vertices = new osg::Vec3Array();
> > > osg::Vec3Array* normals = new osg::Vec3Array();
> > > osg::Vec4Array* colors = new osg::Vec4Array();
> > >
> > > //1st point is the center of the triangle fan
> > > vertices->push_back(osg::Vec3(0,0,0));
> > >
> > > for(int i=1; i<nb_edge; ++i)
> > > {
> > > vertices->push_back(osg::Vec3( radius *
> > > cos(osg::DegreesToRadians(i/(float)(nb_edge/360.0f))),
> > > radius *
> > > sin(osg::DegreesToRadians(i/(float)(nb_edge/360.0f))),
> > > .0f ));
> > > }
> > >
> > > geometry->setVertexArray(vertices);
> > >
> > > normals->push_back(osg::Vec3(0,0,1));
> > > geometry->setNormalArray(normals);
> > > geometry->setNormalBinding(osg::Geometry::BIND_OVERALL);
> > >
> > > colors->push_back(osg::Vec4(1,1,0,1));
> > > geometry->setColorArray(colors);
> > > geometry->setColorBinding(osg::Geometry::BIND_OVERALL);
> > >
> > > osg::DrawElementsUShort* primitive = new
> > > osg::DrawElementsUShort(osg::PrimitiveSet::TRIANGLE_FAN);
> > > primitive->push_back(0);
> > > for(int i=1; i<nb_edge; ++i)
> > > primitive->push_back(i);
> > >
> > > geometry->addPrimitiveSet(primitive);
> > >
> > > billboard->addDrawable(geometry,center);
> > > billboard->setMode(osg::Billboard::POINT_ROT_EYE);
> > > center.normalize();
> > > billboard->setNormal(-center);
> > >
> > > return billboard.get();
> > >
> > > }
> >
> >
> >
> > On crash it return the error:
> >
> > Exception non gérée à 0x10028b41 (osg25-osgd.dll) dans 3DEM.exe :
> > > 0xC0000005: Violation d'accès lors de la lecture de l'emplacement
> > > 0xfeeefeee
> > >
> >
> > Do you see any mistake ?
> >
> > Thanks a lot
> >
> > Regards,
> > Vincent.
> >
> > _______________________________________________
> > osg-users mailing list
> > osg-users@lists.openscenegraph.org
> >
> > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> >
> >
>
>
> Cheer
> David Callu
>
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>
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