void update( float x, float y, osgViewer::View* view )
{
bool yes = false;
// look under the mouse:
osg::Vec3d world;
osgUtil::LineSegmentIntersector::Intersections hits;
if ( view->computeIntersections(x, y, hits) )
{
world = hits.begin()->getWorldIntersectPoint();
// convert to map coords:
GeoPoint mapPoint;
mapPoint.fromWorld( s_mapNode->getMapSRS(), world );
// Depending on the level of detail key you request, you will get a mesh that should line up exactly with the highest resolution mesh that the terrain engine will draw.
// At level 15 that is a 257x257 heightfield. If you select a higher lod, the mesh will be less dense.
TileKey key = s_mapNode->getMap()->getProfile()->createTileKey(mapPoint.x(), mapPoint.y(), 15);
OE_NOTICE << "Creating tile " << key.str() << std::endl;
osg::ref_ptr<osg::Node> node = s_mapNode->getTerrainEngine()->createTile(key);
if (node.valid())
{
// Extract the triangles from the node that was created and do our own rendering. Simulates what you would do when passing in the triangles to a physics engine.
OE_NOTICE << "Created tile for " << key.str() << std::endl;
CollectTrianglesVisitor v;
node->accept(v);
node = v.buildNode();
if (_node.valid())
{
s_root->removeChild( _node.get() );
}
osg::Group* group = new osg::Group;
// Show the actual mesh.
group->addChild( node.get() );
_node = group;
// Clamp the marker to the intersection of the triangles created by osgEarth. This should line up with the mesh that is actually rendered.
double z = 0.0;
s_mapNode->getTerrain()->getHeight( node, s_mapNode->getMapSRS(), mapPoint.x(), mapPoint.y(), &z);
GeoTransform* xform = new GeoTransform();
xform->setPosition( osgEarth::GeoPoint(s_mapNode->getMapSRS(),mapPoint.x(), mapPoint.y(), z, ALTMODE_ABSOLUTE) );
xform->addChild( marker.get() );
group->addChild( xform );
s_root->addChild( _node.get() );
}
else
{
OE_NOTICE << "Failed to create tile for " << key.str() << std::endl;
}
}
}
void update( float x, float y, osgViewer::View* view )
{
bool yes = false;
// look under the mouse:
osg::Vec3d world;
osgUtil::LineSegmentIntersector::Intersections hits;
if ( view->computeIntersections(x, y, hits) )
{
world = hits.begin()->getWorldIntersectPoint();
// convert to map coords:
GeoPoint mapPoint;
mapPoint.fromWorld( s_mapNode->getMapSRS(), world );
TileKey key = s_mapNode->getMap()->getProfile()->createTileKey(mapPoint.x(), mapPoint.y(), 13);
OE_NOTICE << "Creating tile " << key.str() << std::endl;
osg::ref_ptr<osg::Node> node = s_mapNode->getTerrainEngine()->createTile(key);
if (node.valid())
{
OE_NOTICE << "Created tile for " << key.str() << std::endl;
CollectTrianglesVisitor v;
node->accept(v);
osg::ref_ptr<osg::Node> output = v.buildNode();
osgDB::writeNodeFile( *output.get(), "createtile.osgt" );
OE_NOTICE << "Wrote tile to createtile.osgt\n";
//osgDB::writeNodeFile(v.buildNode(
//s_root->addChild(v.buildNode());
}
else
{
OE_NOTICE << "Failed to create tile for " << key.str() << std::endl;
}
}
}
