Here is what I would do: 1) Create the whole arrow in one geometry including the line - by default let say make it fixed pointing up (0,0,1). Here is your createArrow thing that will give you the whole arrow 2) Add MatrixTransform on top of this geometry - with this, you can control the position, direction and scale 3) Use quaternions for the arrow orientation osg::Quat
This way would not need to rebuilt it for each change or build the arrow completely in geometry shader - you would need to pass only a line this way - only two vertices -Nick On Wed, Jun 23, 2010 at 6:32 PM, Gianni Ambrosio <[email protected]> wrote: > OK, thanks Nick for the explanation & suggestion. At first I started adding > the geometry to a geode separately but I would like to add the entire arrow > to the geode instead of adding the two parts. I mean somethig like that: > > osg::Geode g; > g->addDrawable(createArrow()); > > osg::Geometry* createArrow() > { > // here use createPyramid() and then add the line > } > > Is it possible? I dont like to do as follows: > > osg::Geode g; > g->addDrawable(createPyramid()); > g->addDrawable(createLine()); > > I mean, I would like to create the arrow as a single geometry but calling > the createPyramid() method. > > Regards > Gianni > > ------------------ > Read this topic online here: > http://forum.openscenegraph.org/viewtopic.php?p=29328#29328 > > > > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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