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/usr/include/spatialindex/Region.h is in libspatialindex-dev 1.8.5-5.

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/******************************************************************************
 * Project:  libspatialindex - A C++ library for spatial indexing
 * Author:   Marios Hadjieleftheriou, mhadji@gmail.com
 ******************************************************************************
 * Copyright (c) 2004, Marios Hadjieleftheriou
 *
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
******************************************************************************/

#pragma once

namespace SpatialIndex
{
	class SIDX_DLL Region : public Tools::IObject, public virtual IShape
	{
	public:
		Region();
		Region(const double* pLow, const double* pHigh, uint32_t dimension);
		Region(const Point& low, const Point& high);
		Region(const Region& in);
		virtual ~Region();

		virtual Region& operator=(const Region& r);
		virtual bool operator==(const Region&) const;

		//
		// IObject interface
		//
		virtual Region* clone();

		//
		// ISerializable interface
		//
		virtual uint32_t getByteArraySize();
		virtual void loadFromByteArray(const byte* data);
		virtual void storeToByteArray(byte** data, uint32_t& length);

		//
		// IShape interface
		//
		virtual bool intersectsShape(const IShape& in) const;
		virtual bool containsShape(const IShape& in) const;
		virtual bool touchesShape(const IShape& in) const;
		virtual void getCenter(Point& out) const;
		virtual uint32_t getDimension() const;
		virtual void getMBR(Region& out) const;
		virtual double getArea() const;
		virtual double getMinimumDistance(const IShape& in) const;

		virtual bool intersectsRegion(const Region& in) const;
		virtual bool containsRegion(const Region& in) const;
		virtual bool touchesRegion(const Region& in) const;
		virtual double getMinimumDistance(const Region& in) const;

		virtual bool intersectsLineSegment(const LineSegment& in) const;

		virtual bool containsPoint(const Point& in) const;
		virtual bool touchesPoint(const Point& in) const;
		virtual double getMinimumDistance(const Point& in) const;

		virtual Region getIntersectingRegion(const Region& r) const;
		virtual double getIntersectingArea(const Region& in) const;
		virtual double getMargin() const;

		virtual void combineRegion(const Region& in);
		virtual void combinePoint(const Point& in);
		virtual void getCombinedRegion(Region& out, const Region& in) const;

		virtual double getLow(uint32_t index) const;
		virtual double getHigh(uint32_t index) const;

		virtual void makeInfinite(uint32_t dimension);
		virtual void makeDimension(uint32_t dimension);

	private:
		void initialize(const double* pLow, const double* pHigh, uint32_t dimension);

	public:
		uint32_t m_dimension;
		double* m_pLow;
		double* m_pHigh;

		friend SIDX_DLL std::ostream& operator<<(std::ostream& os, const Region& r);
	}; // Region
	
	typedef Tools::PoolPointer<Region> RegionPtr;
	SIDX_DLL std::ostream& operator<<(std::ostream& os, const Region& r);
}