interpolation_nearestneighbour.cpp

这是一个GPS相关的程序

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//                                                       //
//                         SAGA                          //
//                                                       //
//      System for Automated Geoscientific Analyses      //
//                                                       //
//                    Module Library:                    //
//                     Grid_Gridding                     //
//                                                       //
//-------------------------------------------------------//
//                                                       //
//          Interpolation_NearestNeighbour.cpp           //
//                                                       //
//                 Copyright (C) 2003 by                 //
//                      Olaf Conrad                      //
//                                                       //
//-------------------------------------------------------//
//                                                       //
// This file is part of 'SAGA - System for Automated     //
// Geoscientific Analyses'. SAGA is free software; you   //
// can redistribute it and/or modify it under the terms  //
// of the GNU General Public License as published by the //
// Free Software Foundation; version 2 of the License.   //
//                                                       //
// SAGA 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 GNU General Public        //
// License for more details.                             //
//                                                       //
// You should have received a copy of the GNU General    //
// Public License along with this program; if not,       //
// write to the Free Software Foundation, Inc.,          //
// 59 Temple Place - Suite 330, Boston, MA 02111-1307,   //
// USA.                                                  //
//                                                       //
//-------------------------------------------------------//
//                                                       //
//    e-mail:     [e-mail]                   //
//                                                       //
//    contact:    Olaf Conrad                            //
//                Institute of Geography                 //
//                University of Goettingen               //
//                Goldschmidtstr. 5                      //
//                37077 Goettingen                       //
//                Germany                                //
//                                                       //
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#include "Interpolation_NearestNeighbour.h"


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CInterpolation_NearestNeighbour::CInterpolation_NearestNeighbour(void)
{
	Set_Name		(_TL("Nearest Neighbour"));

	Set_Author		(_TL("Copyrights (c) 2003 by Olaf Conrad"));

	Set_Description	(_TW(
		"Nearest Neighbour method for grid interpolation from irregular distributed points.")
	);
}

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CInterpolation_NearestNeighbour::~CInterpolation_NearestNeighbour(void)
{}


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bool CInterpolation_NearestNeighbour::On_Initialize(void)
{
	return( Set_Search_Engine() );
}

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bool CInterpolation_NearestNeighbour::Get_Value(double x, double y, double &z)
{
	CSG_Shape	*pPoint;

	if( (pPoint = m_Search.Get_Point_Nearest(x, y)) != NULL )
	{
		z	= pPoint->Get_Record()->asDouble(m_zField);

		return( true );
	}

	return( false );
}


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