source: experimental/TerrainTest/terrainModificationTechnique.h @ 271

#pragma once
#include <osg/Referenced>
#include <osgTerrain/GeometryTechnique>
#include <osgTerrain/TerrainTile>


/**
 * \brief This class defines the extends of a region. This region is a square and is defined by the latitude and longitude range
 * 
 * @author Torben Dannhauer
 * @date  Mrz 2011
 */ 
class region : public osg::Referenced
{
public:
        //! Constructor: Plain constructor, you have to set the extend manually.
        region() : _lat_min(0.0), _lat_max(0.0), _lon_min(0.0), _lon_max(0.0) {};

        //! Destructor: Empty
        ~region(){};

        //! Constructor: Constructed with the specified extend
        region( double lat_min, double lat_max, double lon_min, double lon_max) : _lat_min(lat_min), _lat_max(lat_max), _lon_min(lon_min), _lon_max(lon_max) {};
        region( osg::HeightField& h );
        bool isInside(region& outsider);
        bool isFullOrPartiallyInside(region& outsider);
        double delta_lat(){return(_lat_max-_lat_min);}
        double delta_lon(){return(_lon_max-_lon_min);}
        double _lat_min;
        double _lat_max;
        double _lon_min;
        double _lon_max;
} ;

/**
 * \brief This class is the interface definition class for modifying terrain data. Must be subclassed to implement own terrain modification techniques.
 * 
 * @author Torben Dannhauer
 * @date  Feb 2011
 */ 
class terrainModificationTechnique : public osg::Referenced
{
public:
        terrainModificationTechnique();
        virtual ~terrainModificationTechnique();

        /**
         * \brief This function performs the terrain data modification. Must be subclassed.
         * 
         * @param modificationROI This vector contains the extents of the region of interest which should be modified: lat_min, lat_max, long_min, long_max
         * @param h : Heightfield of the tile which should be modified
         * @param tileExtends : This vector contains the extents of the tile: lat_min, lat_max, long_min, long_max
         */ 
        virtual void modifyHeightfield(region& modificationROI, osg::HeightField* h, region tileExtends)=0;

protected:
        void clampValue(double& value, double min, double max){if(value<min)value=min;if(value>max)value=max;}
        void clampValue(int& value, int min, int max){if(value<min)value=min;if(value>max)value=max;}
};