50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
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/**********************************************************************
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*
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* GEOS - Geometry Engine Open Source
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* http://geos.osgeo.org
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*
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* Copyright (C) 2016 Daniel Baston
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*
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* This is free software; you can redistribute and/or modify it under
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* the terms of the GNU Lesser General Public Licence as published
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* by the Free Software Foundation.
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* See the COPYING file for more information.
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*
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**********************************************************************
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*
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* Last port: index/strtree/ItemDistance.java (JTS-1.14)
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*
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**********************************************************************/
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#pragma once
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#include <geos/index/strtree/ItemBoundable.h>
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namespace geos {
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namespace index {
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namespace strtree {
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/** \brief
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* A function method which computes the distance between two [ItemBoundables](\ref ItemBoundable)
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* in an STRtree. Used for Nearest Neighbour searches.
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*
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* \author Martin Davis
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*/
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class GEOS_DLL ItemDistance {
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public:
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/** \brief
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* Computes the distance between two items.
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*
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* @param item1
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* @param item2
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* @return the distance between the items
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*
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* @throws IllegalArgumentException if the metric is not applicable to the arguments
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*/
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virtual double distance(const ItemBoundable* item1, const ItemBoundable* item2) = 0;
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};
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}
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}
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}
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