source: experimental/TerrainTest/ModificationVisitor.cpp @ 257

#include "ModificationVisitor.h"

using namespace osgTerrain;

ModificationVisitor::ModificationVisitor(std::string extensionToSet) : _extensionToSet(extensionToSet)
{
        setTraversalMode( osg::NodeVisitor::TRAVERSE_ALL_CHILDREN );
}

void ModificationVisitor::apply( osg::Node& node )
{
        //OSG_NOTIFY( osg::ALWAYS ) << "ModVisitor: Node found: " << node.className() << std::endl;

        if(std::string(node.className())=="TerrainTile")
        {
                //OSG_NOTIFY( osg::ALWAYS ) << "ModVisitor: Tile found" << std::endl;
                osgTerrain::TerrainTile* tile = dynamic_cast<osgTerrain::TerrainTile*>(&node);
                if(tile)
                        modifyTile(tile);
        }

        traverse( node );
}

void ModificationVisitor::apply( osg::PagedLOD& pNode )
{
        //OSG_NOTIFY( osg::ALWAYS ) << "ModVisitor: pagedLOD found: " << pNode.className() << std::endl;

        for( unsigned int i=0;i<pNode.getNumFileNames();i++)
        {
                //OSG_NOTIFY( osg::ALWAYS ) << "ModVisitor: pagedLOD Child #" << i << std::endl;
                if(pNode.getFileName(i)!="")
                {
                        //OSG_NOTIFY( osg::ALWAYS ) << "ModVisitor: pagedLOD Child Name pre: " << pNode.getFileName(i) << std::endl;
                        pNode.setFileName(i, pNode.getFileName(i)+_extensionToSet );
                        //OSG_NOTIFY( osg::ALWAYS ) << "ModVisitor: pagedLOD Child Name post: " << newFileName << std::endl;
                }
        }

        traverse( pNode );
}

void ModificationVisitor::modifyTile(osgTerrain::TerrainTile* tile)
{
        //OSG_NOTIFY( osg::ALWAYS ) << "ModificationVisitor::modifyTile()" << std::endl;
        HeightFieldLayer* hfl = dynamic_cast<HeightFieldLayer*>(tile->getElevationLayer());
        osg::HeightField* h = hfl->getHeightField();

        // ROI to flatten
        double dest_lat_min = 48.336808;
        double dest_lat_max = 48.370467;
        double dest_lon_min = 11.736750;
        double dest_lon_max = 11.835322;

        // Determine extend of the tile.
        int rows = h->getNumRows();
        int cols = h->getNumColumns();
        double lat_min = h->getOrigin()[1];
        double lat_max = lat_min + rows * h->getYInterval();
        double lon_min = h->getOrigin()[0];
        double lon_max = lon_min + cols * h->getXInterval();

        // Check if tile is fully or partially inside ROI:
        if(lat_max>dest_lat_min && lat_min<dest_lat_max                 // lat inside ROI
                && lon_max>dest_lon_min && lon_min<dest_lon_max )       // lon inside ROI
        {
                OSG_NOTIFY( osg::ALWAYS ) << "ModificationVisitor::modifyTile() :: affected Tile" << std::endl;
                OSG_NOTIFY( osg::ALWAYS ) << "LAT: " << lat_min << " | " << lat_max << std::endl;
                OSG_NOTIFY( osg::ALWAYS ) << "LON: " << lon_min << " | " << lon_max << std::endl;


                // calculate colum start/end and row start/end of affected vertices
                int startX=0,startY=0,endX=cols,endY=rows;


                // modify height value of affected vertices
                h->setHeight( 0,0, 600);

        }







        //OSG_NOTIFY( osg::ALWAYS ) << "Origin: " << h->getOrigin()[0] << " | " << h->getOrigin()[1] << std::endl;
        //OSG_NOTIFY( osg::ALWAYS ) << "X-Intervall: " << h->getXInterval() << std::endl;
        //OSG_NOTIFY( osg::ALWAYS ) << "Y-Intervall: " << h->getYInterval() << std::endl;
        //if(dest_lat_min<=lat_min && lat_max<=dest_lat_max && dest_lon_min<=lon_min && lon_max<=dest_lon_max)
        //{
        //      OSG_NOTIFY( osg::ALWAYS ) << "ModificationVisitor::modifyTile() :: affected Tile" << std::endl;
        //      OSG_NOTIFY( osg::ALWAYS ) << "LAT: " << lat_min << " | " << lat_max << std::endl;
        //      OSG_NOTIFY( osg::ALWAYS ) << "LON: " << lon_min << " | " << lon_max << std::endl;

        //      h->setHeight( 0,0, 1000);
        //}
        //OpenThreads::Thread::microSleep( 50000 );
}