I am trying to write a NodeVisitor class that does something to
osgTerrain::TerrainTile nodes, but for some reason it never enters my
apply(TerrainTile& tile) function. It just seems to fall back into the
apply(Group& group) of the base NodeVisitor class. Finally I just gave
up and overrided the apply(Group& group) and attempted to dynamic cast
each group to a TerrainTile and then called my apply(TerrainTile&)
function and that worked, but it doesn't seem like the proper way to do
it.
What am I doing wrong? Here is my code (in short):
class TerrainTileVisitor : public osg::NodeVisitor
{
public:
TerrainTileVisitor() :
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
virtual void apply(osgTerrain::TerrainTile& tile)
{
std::cout << "TerrainTile Found!" << std::endl;
traverse(tile);
}
//Added this function to make it work
virtual void apply(osg::Group& group)
{
osgTerrain::TerrainTile* tile =
dynamic_cast<osgTerrain::TerrainTile*>(&group);
if(tile)
apply(*tile);
else
traverse(group);
}
};
Thanks.
Alex
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