source: experimental/TerrainTest/region.cpp

/* -*-c++-*- osgVisual - Copyright (C) 2009-2011 Torben Dannhauer
 *
 * This library is based on OpenSceneGraph, open source and may be redistributed and/or modified under 
 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
 * (at your option) any later version.  The full license is in LICENSE file
 * included with this distribution, and on the openscenegraph.org website.
 *
 * osgVisual requires for some proprietary modules a license from the correspondig manufacturer.
 * You have to aquire licenses for all used proprietary modules.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * OpenSceneGraph Public License for more details.
*/

#include "region.h"

region::region(osg::HeightField& h)
{
        _lat_min = h.getOrigin()[1];
        _lat_max = _lat_min + h.getNumRows() * h.getYInterval();
        _lon_min = h.getOrigin()[0];
        _lon_max = _lon_min + h.getNumColumns() * h.getXInterval();
}

bool region::isInside(region& outsider)
{
        if( outsider._lat_min <= _lat_min && _lat_max <= outsider._lat_max &&
                outsider._lon_min <= _lon_min && _lon_max <= outsider._lon_max )
                return true;
        else
                return false;
}

bool region::isFullOrPartiallyInside(region& outsider)
{
        if( outsider._lat_min < _lat_max && _lat_min < outsider._lat_max &&
                outsider._lon_min < _lon_max && _lon_min < outsider._lon_max )
                return true;
        else
                return false;
}