144 lines
3.2 KiB
C++
144 lines
3.2 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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3 Region2
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3.1 Overview
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This file defines the class ~Region2~ and its methods.
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Defines and includes.
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*/
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#ifndef SECONDO_REGION_H
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#define SECONDO_REGION_H
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#include "../../Tools/Flob/DbArray.h"
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#include "Attribute.h"
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#include "GenericTC.h"
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#include "Curve.h"
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#include "Line.h"
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#include "RectangleBB.h"
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#include "Algebras/Spatial/RegionT.h"
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#include "Algebras/Spatial/PointsT.h"
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#include <vector>
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namespace salr {
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/*
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Forward declarations and typedef.
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*/
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typedef RegionT<DbArray>Region;
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typedef PointsT<DbArray>Points;
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/*
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2.2 Class ~Region2~
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Can be used as an alternative to ~Region~ from ~SpatialAlgebra~ for some use
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cases.
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*/
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class Region2 : public Attribute {
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public:
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friend class Line2;
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/*
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Declaration of constructors.
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*/
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inline Region2() {};
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Region2(const Line2 &line);
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Region2(const Region2 &other);
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Region2(const Region &r);
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/*
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Declaration of destructor.
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*/
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~Region2();
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/*
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Declaration of system methods.
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*/
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static const std::string BasicType();
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static const bool checkType(const ListExpr type);
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int NumOfFLOBs() const;
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Flob *GetFLOB(const int i);
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int Compare(const Attribute *arg) const;
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bool Adjacent(const Attribute *arg) const;
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size_t Sizeof() const;
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size_t HashValue() const;
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void CopyFrom(const Attribute *arg);
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Attribute *Clone() const;
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static ListExpr Property();
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static bool CheckKind(ListExpr type, ListExpr &errorInfo);
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bool ReadFrom(ListExpr LE, const ListExpr typeInfo);
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ListExpr ToListExpr(ListExpr typeInfo) const;
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/*
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Declaration of custom methods.
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*/
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RectangleBB getBounds();
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bool intersects(RectangleBB *bbox);
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Region2* union1(Region2 *rhs);
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Region2* minus1(Region2 *rhs);
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Region2* intersection1(Region2 *rhs);
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Region2* xor1(Region2 *rhs);
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void updateCurves();
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void clearCurves();
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private:
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/*
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Declaration of fields.
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* ~curves~: Stores all segements in a vector containing pointer to ~Curve~.
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* ~coords~: Stores all coordinates that make up this region.
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* ~pointTypes~: Stores the types of segments.
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*/
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std::vector<Curve*> curves;
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DbArray<double> coords;
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DbArray<int> pointTypes;
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/*
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Declaration of private methods.
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*/
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void createCurves();
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void updateFLOBs();
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void nextSegment(int offset, int pointType, double *result) const;
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void appendCoord(double x);
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void appendType(int x);
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int getPointType(int i) const;
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double getCoord(int i) const;
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};
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}
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#endif //SECONDO_REGION_H
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