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ElevationMatrix.h

00001 /**********************************************************************
00002  * $Id: ElevationMatrix.h 3255 2011-03-01 17:56:10Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2006 Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  ***********************************************************************
00015  *
00016  * Last port: original (by strk)
00017  *
00018  **********************************************************************/
00019 
00020 #ifndef GEOS_OP_OVERLAY_ELEVATIONMATRIX_H
00021 #define GEOS_OP_OVERLAY_ELEVATIONMATRIX_H
00022 
00023 #include <geos/export.h>
00024 
00025 #include <geos/geom/CoordinateFilter.h> // for inheritance 
00026 #include <geos/geom/Envelope.h> // for composition
00027 #include <geos/operation/overlay/ElevationMatrixCell.h> // for composition
00028 
00029 #include <vector>
00030 #include <string>
00031 
00032 #ifdef _MSC_VER
00033 #pragma warning(push)
00034 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00035 #endif
00036 
00037 // Forward declarations
00038 namespace geos {
00039         namespace geom {
00040                 class Coordinate;
00041                 class Geometry;
00042         }
00043         namespace operation {
00044                 namespace overlay {
00045                         class ElevationMatrixFilter;
00046                         class ElevationMatrix;
00047                 }
00048         }
00049 }
00050 
00051 namespace geos {
00052 namespace operation { // geos::operation
00053 namespace overlay { // geos::operation::overlay
00054 
00055 
00056 /*
00057  * This is the CoordinateFilter used by ElevationMatrix.
00058  * filter_ro is used to add Geometry Coordinate's Z
00059  * values to the matrix.
00060  * filter_rw is used to actually elevate Geometries.
00061  */
00062 class GEOS_DLL ElevationMatrixFilter: public geom::CoordinateFilter
00063 {
00064 public:
00065         ElevationMatrixFilter(ElevationMatrix &em);
00066         ~ElevationMatrixFilter();
00067         void filter_rw(geom::Coordinate *c) const;
00068         void filter_ro(const geom::Coordinate *c);
00069 private:
00070         ElevationMatrix &em;
00071         double avgElevation;
00072 
00073     // Declare type as noncopyable
00074     ElevationMatrixFilter(const ElevationMatrixFilter& other);
00075     ElevationMatrixFilter& operator=(const ElevationMatrixFilter& rhs);
00076 };
00077 
00078 
00079 /*
00080  */
00081 class GEOS_DLL ElevationMatrix {
00082 friend class ElevationMatrixFilter;
00083 public:
00084         ElevationMatrix(const geom::Envelope &extent, unsigned int rows,
00085                 unsigned int cols);
00086         ~ElevationMatrix();
00087         void add(const geom::Geometry *geom);
00088         void elevate(geom::Geometry *geom) const;
00089         // set Z value for each cell w/out one
00090         double getAvgElevation() const;
00091         ElevationMatrixCell &getCell(const geom::Coordinate &c);
00092         const ElevationMatrixCell &getCell(const geom::Coordinate &c) const;
00093         std::string print() const;
00094 private:
00095         ElevationMatrixFilter filter;
00096         void add(const geom::Coordinate &c);
00097         geom::Envelope env;
00098         unsigned int cols;
00099         unsigned int rows;
00100         double cellwidth;
00101         double cellheight;
00102         mutable bool avgElevationComputed;
00103         mutable double avgElevation;
00104         std::vector<ElevationMatrixCell>cells;
00105 };
00106 
00107 } // namespace geos::operation::overlay
00108 } // namespace geos::operation
00109 } // namespace geos
00110 
00111 #ifdef _MSC_VER
00112 #pragma warning(pop)
00113 #endif
00114 
00115 #endif // ndef GEOS_OP_OVERLAY_ELEVATIONMATRIX_H
00116 
00117 /**********************************************************************
00118  * $Log$
00119  * Revision 1.1  2006/03/17 13:24:59  strk
00120  * opOverlay.h header splitted. Reduced header inclusions in operation/overlay implementation files. ElevationMatrixFilter code moved from own file to ElevationMatrix.cpp (ideally a class-private).
00121  *
00122  **********************************************************************/
00123 

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